Heavy metal-contaminated water has become a great challenge for aquatic ecosystems. Herein, a versatile composite (IRC 748-GO) adsorbent was prepared by modifying graphene oxide (GO) with Amberlite IRC 748 resin. The batch and dynamic adsorption experiments of Cu2+ on the IRC 748-GO composite were conducted, and the results showed that the novel adsorbents have a high adsorption capacity compared to the pristine GO. The adsorption process was consistent with the pseudo-second-order kinetic model and the equilibrium data were well fitted to the Langmuir isotherm model, and the maximum uptake of Cu2+ was 127.22 mg/g. The adsorption mechanism was investigated using FT-IR, SEM, XPS, and adsorption isotherms, which revealed that the carboxyl groups in IRC 748-GO composite could effectively chelate Cu2+. Overall, the IRC 748-GO composite exhibited important advantages such as great specific surface area and stability, as well as high adsorption capacity, which provides broad application prospects for efficiently remediating wastewater containing heavy metals.
Mechanoluminescence (ML) is a light emission phenomenon caused by mechanical force on a substance. Recently, metal complexes mechanoluminescence materials are attracting widespread attention owing to their distinctive optical emission properties, which create exciting opportunities in various fields, such as stress sensing, anti-counterfeiting, structural health monitoring, medical health monitoring, structure detection and other fields. In this review, we summarized the recent progress of metal complex mechanoluminescence materials, including lanthanide metal complexes and transition metal complexes. In addition, the underlying mechanoluminescence mechanisms, design principles of mechanoluminescence, detailed photophysical behaviors, and their potential applications have been discussed. This review will provide inspiration and guidelines for constructing metal complexes mechanoluminescence materials and expanding their potential applications in stress sensing, structure detection and so on.
Within the realm of wastewater treatment, the restrictions of inter-particle agglomeration and difficulty in recovery of traditional powder materials greatly limited their large-scale application. Hence, a novel combination of hydrothermal method and impregnation enabled the successful loading of MoS2@FeOOH (MF) onto solid waste-derived ceramsite. Then it was employed to remove sulfamethoxazole (SMX) by activating peroxymonosulfate (PMS) under continuous flow conditions. Interestingly, its rough surface and rich void structure provided rich attachment sites for MF using the ceramsite as substrate, and the metal-carrier interaction among FeOOH, MoS2 and ceramsite suppressed the leaching effect of Fe ions. As predicted, the MoS2@FeOOH/ceramsite (MFC) exhibited a higher degradation ratio (83.4%) compared to MoS2 (36.7%) and MF (42.9%). The degradation of SMX involved multiple species, including ⋅OH, SO4⋅−, ⋅O2− and 1O2. Notably, a significant role was observed for the non-radical pathway dominated by 1O2. Furthermore, ten intermediates were detected in the degradation process by LC-MS technique, and five possible degradation pathways of SMX were proposed, and the intermediates were evaluated for toxicity. In summary, the MFC composite has the advantages of good catalytic performance and lower ion leaching rate, exhibiting the promising application prospect in PMS activation for degrading SMX antibiotic wastewater.
The elastic modulus of titanium is greatly influenced by the stability of the β-phase. Metastable β or near-β titanium with low β-phase stability and non-toxic elements can often achieve a lower elastic modulus. This study proposed a high efficiency composition design method combining CALPHAD calculations and nanoindentation test to design the Ti-Nb-Zr-Sn-Ta alloy with low modulus. By this method, a near-β titanium Ti-18Nb-8Zr-5Sn-2Ta with low-modulus, high-strength and good plasticity (elastic modulus (58.3±2.0) GPa, tensile strength (813.3±7.2) MPa, elongation (25.3±2.1)%) was developed. The experimental results showed that conventional molybdenum equivalent method overestimates the β-stability of Sn and Zr on titanium alloys, and Nb and Ta are more effective β-stabilizers for Ti-Nb-Zr-Sn-Ta alloy.
The hot deformation behavior of spray-formed 7055 aluminum alloy extruded plate was studied under conditions of 300–450 °C and 0.01–25 s−1 through a combination of Gleeble hot compression experiments and Deform-3D software simulations. The processing maps, simulation results, and calculation of residual dislocation density and stored energy were used to understand the microstructure evolution of the alloy. The results show that the optimum hot working conditions for the alloy lies within the high-temperature and low-strain rate region (400–450 °C, 0.01–1.0 s−1), where the power dissipation coefficient η is the highest and the damage is the lowest. The unstable domain is concentrated in the high strain rate region (1.0–25 s−1), which has the highest damage and is prone to cracking. Moreover, a slow heating and long duration heat-treatment prior to hot deformation was designed to solve the problem of formation of coarse grains and abnormal grain growth after solution treatment. This heat treatment can effectively reduce the residual dislocation density and stored energy, and promote the precipitation of Al3Zr particles to hinder dislocation movement and pin grain boundaries, thereby inhibiting the static recrystallization during solution treatments.
Al-Zn-Mg alloys have been investigated for the effect of Sc additions on corrosion resistance. The addition of Sc to Al-Zn-Mg alloys can more effectively retard recrystallisation during heat treatment and improve mechanical properties. Sc-added alloys show significant discontinuity in grain boundary precipitation. In addition, the distribution spacing of η precipitates at the grain boundary is the largest in the alloy with Sc content of 0.29 wt.%. The exfoliation corrosion test and microstructural recrystallisation analysis show the inhibitory effect of Sc addition on recrystallisation and hence the improvement in corrosion resistance. In-situ immersion corrosion results indicated that the uncorroded texture in Al-Zn-Mg alloy with 0.29 wt.% Sc content first showed a rapid decrease and then a rapid increase. The addition of Sc to Al-Zn-Mg alloy plays an important role in improving the surface texture and increasing the corrosion resistance in the early stages of corrosion.
Flat clinched joints are gaining popularity in lightweight and innovative engineering structures. This study aims to analyze the material flow in the flat clinching process and joint failure mechanism. Al5052-H32 aluminum alloy sheets were joined using flat clinching with varying forming loads. A finite element model was developed to study the material flow. Metallographic observations and microhardness measurements of the joint cross-section were conducted to investigate the material flow. Shear tensile and cross-tension tests were performed to analyze the influence of forming load on joint mechanical behaviors. Fracture surface analysis reveals joint fracture mechanisms in the cross-tension and shear tensile tests from microscopic and macroscopic perspectives. The results show that the most active material flow occurred in the upper sheet region near the punch fillet. Joint fracture exhibited ductile characteristics caused by the aggregation of micropores.
Global demand for cobalt is proliferating with the booming usage and consumption of Li-ion batteries in energy storage applications. With high cobalt content, cobalt white alloy has been an important intermediate product for cobalt production. In this paper, a method of hydrochlorination roasting-hydrogen reduction of cobalt white alloy is proposed to separate the valuable metals in cobalt white alloy. The hydrochlorination roasting process achieves the separation of copper and silicon from the cobalt white alloy and produces iron-cobalt binary chloride. This paper focuses on the effects of reduction temperature, reduction time, and hydrogen concentration during the hydrogen reduction of iron-cobalt binary chloride, with the aim of separating the two metals. The Co/Fe mass ratio in the reduction product is 10.71, with the cobalt content usually above 90 wt% under optimal conditions. The reduction product is a micro-fibrous Co-rich alloy exhibiting a significant specific surface area, which may have promising applications in catalysis. A mechanism based on chemical vapor deposition has been proposed to explain the formation of micro-fibrous products.
In this work, oxygen pressure acid leaching is implemented to augment the leaching efficiency of valuable metals from sintered nickel alloy. Techniques investigation shows that NiO in the sample and NiO coated by Ni2O3 impede the ongoing dissolution of nickel during atmospheric acid leaching. The nickel oxides undergo conversion into soluble nickel sulfate via oxygen pressure acid leaching. Thermodynamic analysis indicates that in the system of pH<6.26, temperature >146 °C and potential >0.20 V, a substantial portion of both nickel and cobalt dissolved into the solution as metal ions, while most of the iron is hydrolyzed to Fe2O3 in residue. The optimized leaching conditions are: H2SO4 concentration of 150 g/L, leaching temperature of 180 °C, oxygen partial pressure of 2 MPa, liquid-to-solid ratio of 10 mL/g, stirring rate of 400 r/min, and time of 150 min. Given these circumstances, the leaching efficiencies of Ni, Co and Fe were 97.42%, 96.30% and 10.05%, correspondingly. Reaction kinetics studies indicate that the leaching process of nickel was dictated by a controlled model of surface chemistry, featuring an apparent activation energy of 43.73 kJ/mol. This study offers a viable and environmentally-friendly methodology for the leaching of nickel from sintered nickel alloy.
The paper proposes the innovative technology of hydrogen mineral phase transformation–magnetic separation–acid leaching for iron enrichment and dephosphorization, based on the mineralogical characteristics of high phosphorus oolitic hematite and difficulties that make it difficult to utilize traditional beneficiation for separation. The influences of the reduction temperature, reduction time, and reductant concentration during hydrogen mineral phase transformation on the separation index of high phosphorus oolitic hematite were investigated. The optimal conditions were determined to be a reduction time of 25 min with a reductant concentration of 30% and a reduction temperature of 540 °C, under which an iron grade of 65.05%, iron total recovery of 81.86%, and phosphorus content of 0.081% were obtained for the iron concentrate. The evolution of mineral phases, magnetic properties, and mineral microstructures was investigated by XRD, VSM, XPS, SEM, and BET. The results provide new references of technology and theoretical support for the efficient utilization of refractory iron ores.
Rapid acquisition of rock mechanical parameters and accurate identification of rock drillability are important to guide the safe construction of different scale drilling engineering (wells and boreholes) and high-efficient excavation of rock engineering. A database is established based on 281 sets of drilling parameters and rock mechanical parameters collected from four micro drilling experiments. The drilling parameters in the database include drilling force (F), torque (T), rotational speed (N), and rate of penetration (V), from which the specific energy (SE) and the drillability index (Id) are calculated. With these parameters as input, fitting regression analysis and machine learning regression are used to predict the uniaxial compressive strength (UCS) of rocks. Furthermore, TOPSIS-RSR method is used to achieve rock drillability classification, and machine learning classification methods are used to perceive and identify drillability. In the prediction and recognition process, the accuracies of different methods are compared to determine the optimal model. The research methods and findings can provide new approaches for real-time in-situ measurement of UCS and drillability classification of rock, providing a basis for improving the efficiencies of drilling and excavation and ensuring the construction safety.
Microwave-induced strength weakening and brittle reduction of rock are significant for improving hard rock breaking efficiency. Uniaxial compression tests and microscopic analysis were conducted on granite treated with various microwave heating times (0 s, 60 s, 120 s, 180 s, 240 s, 300 s). The results demonstrate that a considerable change occurs in the mechanical properties of granite when irradiated at a power of 5.4 kW for 120 s. Combining the acoustic emission (AE) data, the crack initiation and damage stresses are identified and found to decrease linearly with increasing exposure time. According to microscopic analysis, the weakening behavior of granite under microwave heating is attributed to an increase in crack density. The opening of intergranular cracks after 120 s of heating results in a rise of 0.6% in crack density, and the development of thermal cracks after 300 s increases the crack density to 8.62%. The reduction in stress threshold ratios and the transition from tensile to shear failure mode of granite after microwave treatment indicate a decrease in rock brittleness. Quantitative brittleness indexes, especially the index based on the crack initiation stress, confirm that rock brittleness degrades as the duration of microwave processing increases.
The occurrence of non-uniform building settlement and mine-induced earthquakes are common in areas with frequent mining activities. This phenomenon can be attributed to soil deformation and redistribution of internal forces resulting from mining activities, which often leads to significant damage to building structures. The long-term deformation of the slope of an open-pit mine after closure contributes to the non-uniform settlement of surrounding buildings. To address these issues, this paper presents four models for non-uniform settlement and analyzes the static and dynamic response characteristics of different building models. Numerical simulation contents demonstrate that the frame-shear wall structure combined with stepped settlement exhibits superior performance during static analysis, whereas the frame structure with continuous settlement lacks adequate support on safety evaluation. Moreover, mine earthquakes with magnitudes less than 3.0M (M for Richter scale) have a negligible impact on nearby buildings. On that account, the results would provide reference into building settlement and mine earthquake damage analysis in mining industrial cities.
To explore the static mechanical and damage evolution characteristics of hot dry rock, groups of uniaxial compression test and Brazilian splitting test were performed on granite after cyclic heating-cooling treatment. Acoustic emission (AE) monitoring and scanning electron microscopy (SEM) techniques were utilized to analyze the AE characteristics and the micro-morphological characteristics of granite samples. The results show that the compressive strength has a significant linear relationship with the related tensile strength of the granite after different heating-cooling cycles. In both tests, the changes in AE counts basically agree with those in stress–strain curves. The normalized accumulated AE counts can well reflect the damage evolutions during complete loading of the granite. The initial damage to the granite increases with increasing temperature and number of heating-cooling cycles, resulting in a constant increase in the rate of damage to the granite. In addition, three damage variables were defined, of which the damage variable based on the tensile strength is the most sensitive to the number of heating-cooling cycles.
This study results from the authors’ long-term efforts to develop key technology of gob-side entry retained by roof cutting under hard main roof. Three directions energy-gathered pre-splitting blasting device (TDEGPBD), open gob sealed technology with the flame retardant cement blanket (FRCB), and entry support with following mining states control ideology (FMSC) were proposed. The mechanical model of energy-gathered pre-splitting blasting with TDEGPBD was established. TDEGPBD can fracture rock mass in three directions and reduce roof suspension. Aiming at preventing spontaneous combustion of reserved coal in the gob, open gob sealed technology with FRCB was invented. It not only considers the space-time of gangue collapse but also realizes the goals of open gob rapid seal. Monitoring results show that CO, O2, and CH4 concentration decreased significantly to 0, 3.0257%, and 0.0899%, respectively. Following mining states control scheme considering the stages and the regions was proposed. The convergences of the roof near the cutting side and near the virgin coal side were 115 mm and 104 mm, respectively and the convergence between the gangue rib and virgin coal rib was 88.7 mm. These three key technologies provide an innovative approach and have significant application potential in non-coal pillar mining method.
As common components in huge underwater gliders, modal vibrations of flexible beams can affect the durability of structures and the precision of system. The current methods for suppressing the beam vibrations include the damping suppression, active control and absorbers, etc. The above control methods were gradually developed for the low frequencies and wide band. The accurate structures and excitation parameters should be obtained in the design processing. In this work, a time-varying boundary method is proposed based on the energy transfer phenomenon of time-varying boundary structure. The proposed method is effective for suppressing multi-order structure resonance simultaneously. A dynamic model of a time-varying boundary beam is established. The vibrations of time-varying boundary beam are obtained by a time-domain piecewise analytical method, which are compared with those from a finite element software. The vibrations of time-varying boundary beams and time-invariant beams are compared. The vibration suppression effect of time-varying boundary method is verified. The effects of the damping, time-varying range and time-varying speed on the vibration suppression characteristics are analyzed. The time-varying position optimization area is obtained. Note that the time-varying boundary method can simultaneously suppress the multimodal resonances of beam and reduce the resonance peaks with the highest energy.
Layered double hydroxide (LDH) has been regarded as one of ideal electrode for supercapacitors due to layered structure, multiple redox active centers, and synergistic effects between metal ions. However, low capacitance and poor cycling stability greatly limit their large-scale application. Herein, nickel-aluminum layered double hydroxide (NiAl-LDH) onto nickel foam has been prepared by a simple one-step hydrothermal method, with the charge storage capability controlled by using different reactant concentration. It is found that the reactant concentration can regulate the morphology, crystallinity and loading density of NiAl-LDH. The optimized NiAl-LDH (Ni1Al1-LDH) shows a porous nanosheet structure with oxygen defects, which tightly covers on the nickel foam to facilitate ion and electron transfers, improving the redox activity of Ni ions and thus energy storage. As a supercapacitor electrode, the Ni1Al1-LDH achieves a specific capacitance of 1958.1 F/g at a current density of 1 A/g. The capacitance retention rate can reach as high as 108.7% up to 1000 cycles of continuous charge and discharge at a scan rate of 100 mV/s.
In this research article, we introduce a numerical investigation through artificial neural networks (ANN) integrated with evolutionary algorithm especially Archimedean optimization algorithm (AOA) hybrid with the water cycle algorithm (WCA) to address and enhance the analysis of the non-linear magneto-hydrodynamic (MHD) Jeffery-Hamel problem, especially stretching/shrinking in convergent and divergent channel. This combined technique is referred to as ANN-AOA-WCA. The complex nonlinear magneto-hydrodynamic Jeffery-Hamel problem based partial differential equations are transformed into non-linear system of ordinary differential equations for velocity and temperature. We formulate the ANN based fitness function to find the solution of non-linear differential. Subsequently, we employ a novel hybridization of AOA and WCA (AOA-WCA) to optimize the ANN based fitness function and identify the best optimal weights and biases for ANN. To demonstrate the effectiveness and versatility of our proposed hybrid method, we explore MHD models across a range of Reynolds numbers, channel angles and stretchable boundary value leading to the development of two distinct cases. ANN-AOA-WCA numerical results closely align with reference solutions (NDSOLVE) and the absolute error between NDSOLVE and ANN-AOA-WCA is up to 3.35 × 10−8, particularly critical to the understanding of stretchable convergent and divergent channel. Furthermore, to validate the ANN-AOA-WCA technique, we conducted a statistical analysis over 150 independence runs to find the fitness value.
In recent years, with the rapid development of braced excavation supported by multi-level struts, cases of continuous failure caused by local failure of braced excavation occur frequently. However, in previous studies, soil is usually idealized, and anisotropy is ignored, leading to a certain deviation in the results accuracy. Based on a subway braced excavation in Tianjin, this paper adopted the NGI-ADP soil constitutive model to consider soil anisotropy and established a 3D finite element model to simulate the one-strut failure (OSF) at different positions, which is regarded as the triggering factor for several progressive excavation failure case histories. The axial force response of support system after OSF was quantified by load transfer rate and load increase rate. The results showed that the influence of soil anisotropy on the struts axial force cannot be ignored. The response of the support system is similar when the one-strut fails in the middle of the same level struts. After OSF, there is a nearby load transfer phenomenon and mainly in the vertical direction.
The purpose of this review is to introduce the principle and development of microseismic source localization technology in deep-buried tunnel engineering. First, it introduces the main methods of microseismic source localization and the main factors affecting the accuracy of source location are summarized, including velocity structure model, propagation path of microseismic wave, objective function, algorithm, monitoring sensors array, and arrival-time picking up of microseismic wave. Then, by analyzing the influence of these factors on the result of microseismic source localization, the advantages and disadvantages of each method are discussed, and the methods and measures to improve the accuracy are counseled. This review discusses the optimization of monitoring sensors array and provides theoretical guidance for rock fracture monitoring in engineering. Finally, a brief summary is given, and the future research direction of microseismic source localization is put forward.
This paper studied effects of solid particles with different concentrations on cavitation flow special evolution in the nozzle. Solid particle concentration varied from 1% to 6% and the mean diameter increased from 0.0015 mm to 0.070 mm. Schnerr-Sauer cavitation model for pure water cavitation flow (PWCF) was modified to perform the numerical simulation of solid particle-water cavitation flow (SPWCF). Results indicated that SPWCF vapor content was greater than that in PWCF. Solid particles with various concentrations promoted cavitation flow evolution. With the increase in concentration, the promotion scope of the mean diameter became smaller gradually. SPWCF flow parameters and force acting on solid particles were discussed to reveal the mechanisms. The maximum and absolute minimum slip velocities were greater than corresponding ones of PWCF. The maximum and minimum turbulent kinetic energies were higher than those of PWCF. SPWCF mixture kinetic energy was higher than that of PWCF. They were primary factors to decrease the pressure to promote cavitation flow evolution. Magnitude of the calculated Saffman lift force was 10−2; the effects on cavitation flow evolution were relatively weak; it was the secondary factor. Interactions of these factors promoted the special evolution of SPWCF in the nozzle.
Understanding triggering mechanism of shear-induced rockburst is of great significance for design, construction and operation in underground engineering. To reveal triggering rockburst mechanism in double-tunnel rocks (DTR), double rectangular tunnel (DRT) and double circle tunnel (DCT) physical model shear tests are executed, combined with high-speed cameras and acoustic emission monitor. And five tunnel spacing numerical models are established to investigate the triggering rockburst meso-mechanism based on continuous-discontinuous shear process. In addition, a energy impact index (S) is presented to evaluate shear-induced rockburst proneness. The test results indicate that the shear characteristic, internal and external failure characteristics, and micro-crack number evolution characteristics of DTR can generally be divided into four unified typical stages. In terms of fracture evolution, the shear failure of DTR has experienced shear compression stage, elastic stage dominated by crack initiation, shear fracture stage dominated by crack propagation-coalescence and shear-induced rockburst, and shear friction stage. It is generalized into typical shear model, and it reveals that DTR exhibits a significant characteristic of symmetrical cat-ear shaped notch formed after the shear-induced rockburst. In the aspect of the evolution of micro-cracks, the specimen has crack quiet period, initial crack increase stage, rapid crack increase stage, and crack stability stage. In addition, when the tunnel spacing is greater than 2 times tunnel diameter, the stress concentration phenomenon is significantly optimized. More importantly, the essential triggering shear-induced rockburst mechanism difference between DRT and DCT is the structural effect caused by the section shape, i.e., the difference in stress field distribution between DRT and DCT leads to different rockburst behaviors. The research results are beneficial for deepening the understanding on mechanism of shear-induced rockburst.
The stiffness theory of rockburst plays a crucial role in understanding and preventing rockburst events. This theory evaluates the severity of rockbursts through the difference in stiffness. As a fundamental theory, many new theories have emerged from the stiffness theory, and its applications in mines and deep tunnels are diverse. In this paper, we provide a systematic review of the development process, application status, and application field of rockburst stiffness theory from the perspective of theoretical derivation, laboratory testing, and field application. We also identify key and difficult problems in stiffness theory, such as the determination method of stiffness, the influence of post-peak slope, and the study of rockburst criteria. In addition, based on the existing issues related to stiffness determination, exploration of stiffness changes during rockburst development, and low adaptability in predicting rockburst intensity, we propose the influence of the blasting body-surrounding rock stiffness on the spatial-temporal characteristics, intensity, and mechanism of rockburst, dynamic variable stiffness tests, and stiffness theoretical criteria for determining the rockburst intensity as areas for further research on the stiffness theory of rockburst.
In order to explore the mechanical properties of surrounding rock mass in high-humidity environment of mine, based on the self-made humidity environment control simulation device, the mechanical characteristics and deterioration mechanism of sandstone samples at different relative humidity conditions (70%, 80%, 90% and 100%) under uniaxial compression were studied. The results show that: 1) With the increase in relative humidity, the porosity of sandstone increases gradually, while the mass and strength decrease obviously, but the corrosion ability of humidity to specimens decreases after reaching a certain time; 2) The acoustic emission variation of sandstone under uniaxial compression is consistent with the stress evolution characteristics, and the number of acoustic emission events in the high humidity environment is significantly lower than that under the dry condition; 3) As the relative humidity of the environment increases, the fractal dimension of sandstone fragmentation gradually increases, the fractal position parameters and fragment scale parameters gradually decrease, and the fragment size and distribution concentration gradually decrease after sandstone failure; 4) The peak diffraction intensity and mineral content of sandstone albite and calcite decrease with the increase of relative humidity, while the size and number of microcracks increase with the increase of relative humidity. The damage and deterioration mechanism of sandstone under high-humidity environment includes the combined effect of physical and chemical erosion. The research results will provide necessary references for the stability control of surrounding rock in high humidity environment of mine.
With the development of the photovoltaic industry, the use of solar energy to generate low-cost electricity is gradually being realized. However, electricity prices in the power grid fluctuate throughout the day. Therefore, it is necessary to integrate photovoltaic and energy storage systems as a valuable supplement for bus charging stations, which can reduce reliance on the grid and the total operational cost. This paper proposes three charging station expansion models, i.e., charging station with the energy storage system, charging station with the photovoltaic system, and charging station with both photovoltaic and energy storage systems. These models consider the time-of-use electricity prices, the instability of photovoltaic output power and electric bus charging demand, and equipment investment cost. Through a case study in Beijing, the optimal capacity configuration of charging stations under each type of supplementary scheme is achieved by solving these models using software Gurobi. The findings reveal that charging stations incorporating energy storage systems, photovoltaic systems, or combined photovoltaic storage systems deliver cost savings of 13.96 %, 21.44 %, and 30.85%, respectively, compared to the station without supplemental devices. Notably, the charging station integrating both photovoltaic and energy storage systems stands out as the most cost-effective option.
The micro-combustor serves as a critical component in the micro-thermal photovoltaic system (MTPV). In this study, a novel premixed hydrogen/air fueled micro-combustor with baffles was proposed to enhance thermal performance, including average wall temperature, theorical radiation efficiency, and wall temperature uniformity. The key parameters of baffles, including materials, quantity, length, thickness, and layout were optimized. The findings reveal that the introduction of baffles with stainless steel materials led to a noticeable rise in average wall temperature by approximately 150 K, along with a more uniform wall temperature distribution. When considering the materials for the combustion chamber and baffles, stainless steel, alumina ceramics, silicon carbide, and quartz were evaluated. Among these options, stainless steel exhibits the highest average wall temperature and theorical radiation efficiency, while silicon carbide displays the most uniform wall temperature. Upon being outfitted with three stainless steel baffles, each with a length of 13.5 mm and a thickness of 0.3 mm, the micro-combustor achieved optimal thermal performance. It is worth noting that even greater improvements in average wall temperature, theoretical radiation efficiency, and uniformity can be achieved by implementing a well-suited clustered layout for these three baffles.