Preparation of porous sea-urchin-like CuO/ZnO composite nanostructure consisting of numerous nanowires with improved gas-sensing performance

Abstract

A sea-urchin-like CuO/ZnO porous nanostructure is obtained via a simple solution method followed by a calcination process. There are abundant pores among the resulting nanowires due to the thermal decomposition of copper–zinc hydroxide carbonate. The specific surface area of the as-prepared CuO/ZnO sample is determined as 31.3 m²·g⁻¹. The gas-sensing performance of the sea-urchin-like CuO/ZnO sensor is studied by exposure to volatile organic compound (VOC) vapors. With contrast to a pure porous sea-urchin-like ZnO sensor, the sea-urchin-like CuO/ZnO sensor shows superior gas-sensing behavior for acetone, formaldehyde, methanol, toluene, isopropanol and ethanol. It exhibits a high response of 52.6–100 ppm acetone vapor, with short response/recovery time. This superior sensing behavior is mainly ascribed to the porous nanowire-assembled structure with abundant p–n heterojunctions.

Graphical abstract

Keywords

copper oxide / zinc oxide / copper--zinc hydroxide carbonate / volatile organic compound / gas sensor

References

[1] Qin W B, Yuan Z Y, Gao H L, . Perovskite-structured LaCoO₃ modified ZnO gas sensor and investigation on its gas sensing mechanism by first principle. Sensors and Actuators B: Chemical, 2021, 341: 130015

[2] Han Z J, Qi Y, Yang Z Y, . Recent advances and perspectives on constructing metal oxide semiconductor gas sensing materials for efficient formaldehyde detection. Journal of Materials Chemistry C: Materials for Optical and Electronic Devices, 2020, 8(38): 13169–13188

[3] Ge W, Zhang X H, Ge X T, . Synthesis of α-Fe₂O₃/SiO₂ nanocomposites for the enhancement of acetone sensing performance. Materials Research Bulletin, 2021, 141: 111379

[4] Zhu L, Zeng W, Li Y Q. A non-oxygen adsorption mechanism for hydrogen detection of nanostructured SnO₂ based sensors. Materials Research Bulletin, 2019, 109: 108–116

[5] Kim K, Choi P G, Itoh T, . Catalyst-free highly sensitive SnO₂ nanosheet gas sensors for parts per billion-level detection of acetone. ACS Applied Materials & Interfaces, 2020, 12(46): 51637–51644

[6] Zhang D Z, Mi Q, Wang D Y, . MXene/Co₃O₄ composite based formaldehyde sensor driven by ZnO/MXene nanowire arrays piezoelectric nanogenerator. Sensors and Actuators B: Chemical, 2021, 339: 129923

[7] Wang M S, Wang Y W, Li X J, . WO₃ porous nanosheet arrays with enhanced low temperature NO₂ gas sensing performance. Sensors and Actuators B: Chemical, 2020, 316: 128050

[8] Liang F X, Liang L, Zhao X Y, . Mesoporous anodic α-Fe₂O₃ interferometer for organic vapor sensing application. RSC Advances, 2018, 8(54): 31121–31128

[9] Simonetti E A N, de Oliveira T C, Machado D E D, . TiO₂ as a gas sensor: the novel carbon structures and noble metals as new elements for enhancing sensitivity — A review. Ceramics International, 2021, 47(13): 17844–17876

[10] Kang Y L, Yu F, Zhang L, . Review of ZnO-based nanomaterials in gas sensors. Solid State Ionics, 2021, 360: 115544

[11] Li C C, Zhou H G, Yang S C, . Preadsorption of O₂ on the exposed (0 0 1) facets of ZnO nanostructures for enhanced sensing of gaseous acetone. ACS Applied Nano Materials, 2019, 2(10): 6144–6151

[12] Gupta S K, Mohan S, Valdez M, . Enhanced sensitivity of caterpillar-like ZnO nanostructure towards amine vapor sensing. Materials Research Bulletin, 2021, 142: 111419

[13] Li Q C, Chen D, Miao J M, . Highly sensitive sensor based on ordered porous ZnO nanosheets for ethanol detecting application. Sensors and Actuators B: Chemical, 2021, 326: 128952

[14] Li J P, Yang Y F, Wang Q, . Design of size-controlled Au nanoparticles loaded on the surface of ZnO for ethanol detection. CrystEngComm, 2021, 23(4): 783–792

[15] Wang H T, Li Y Y, Wang C C, . N-pentanol sensor based on ZnO nanorods functionalized with Au catalysts. Sensors and Actuators B: Chemical, 2021, 339: 129888

[16] Wang J, Hu C Y, Xia Y, . Highly sensitive, fast and reversible NO₂ sensors at room-temperature utilizing nonplasmonic electrons of ZnO/Pd hybrids. Ceramics International, 2020, 46(6): 8462–8468

[17] Wang S, Jia F, Wang X, . Fabrication of ZnO nanoparticles modified by uniformly dispersed Ag nanoparticles: enhancement of gas sensing performance. ACS Omega, 2020, 5(10): 5209–5218

[18] Gong Y, Wu X F, Chen J Y, . Enhanced gas-sensing performance of metal@ZnO core–shell nanoparticles towards ppb-ppm level benzene: the role of metal–ZnO hetero-interfaces. New Journal of Chemistry, 2019, 43(5): 2220–2230

[19] Liu J J, Zhang L Y, Fan J J, . Triethylamine gas sensor based on Pt-functionalized hierarchical ZnO microspheres. Sensors and Actuators B: Chemical, 2021, 331: 129425

[20] Nakate U T, Ahmad R, Patil P, . Improved selectivity and low concentration hydrogen gas sensor application of Pd sensitized heterojunction n-ZnO/p-NiO nanostructures. Journal of Alloys and Compounds, 2019, 797: 456–464

[21] Liang Y C, Chang Y C. The effect of Ni content on gas-sensing behaviors of ZnO–NiO p–n composite thin films grown through radio-frequency cosputtering of ceramic ZnO and NiO targets. CrystEngComm, 2020, 22(13): 2315–2326

[22] Hung P T, Hoat P D, Hien V X, . Growth and NO₂-sensing properties of biaxial p-SnO/n-ZnO heterostructured nanowires. ACS Applied Materials & Interfaces, 2020, 12(30): 34274–34282

[23] Min S K, Kim H, Noh Y, . Fabrication of highly sensitive and selective acetone sensor using p-Co₃O₄ nanoparticle-decorated n-ZnO nanowires. Thin Solid Films, 2020, 714: 138249

[24] Nithya S, Sharan R, Roy M, . Ni doping in CuO: a highly sensitive electrode for sensing ammonia in ppm level using lanthanum gallate based electrolyte. Materials Research Bulletin, 2019, 118: 110478

[25] Kulkarni S, Ghosh R. A simple approach for sensing and accurate prediction of multiple organic vapors by sensors based on CuO nanowires. Sensors and Actuators B: Chemical, 2021, 335: 129701

[26] Nanda A, Singh V, Jha R K, . Growth-temperature dependent unpassivated oxygen bonds determine the gas sensing abilities of chemical vapor deposition-grown CuO thin films. ACS Applied Materials & Interfaces, 2021, 13(18): 21936–21943

[27] Wang X, Li S H, Xie L L, . Low-temperature and highly sensitivity H₂S gas sensor based on ZnO/CuO composite derived from bimetal metal-organic frameworks. Ceramics International, 2020, 46(10): 15858–15866

[28] Mariammal R N, Ramachandran K. Study on gas sensing mechanism in p-CuO/n-ZnO heterojunction sensor. Materials Research Bulletin, 2018, 100: 420–428

[29] Na H B, Zhang X F, Zhang M, . A fast response/recovery ppb-level H₂S gas sensor based on porous CuO/ZnO heterostructural tubule via confined effect of absorbent cotton. Sensors and Actuators B: Chemical, 2019, 297: 126816

[30] Lee J E, Lim C K, Park H J, . ZnO–CuO core–hollow cube nanostructures for highly sensitive acetone gas sensors at the ppb level. ACS Applied Materials & Interfaces, 2020, 12(31): 35688–35697

[31] Navale Y H, Navale S T, Stadler F J, . Enhanced NO₂ sensing aptness of ZnO nanowire/CuO nanoparticle heterostructure-based gas sensors. Ceramics International, 2019, 45(2): 1513–1522

[32] Huang J R, Dai Y J, Gu C P, . Preparation of porous flower-like CuO/ZnO nanostructures and analysis of their gas-sensing property. Journal of Alloys and Compounds, 2013, 575: 115–122

[33] Xian K C, Nie B, Li Z G, . TiO₂ decorated porous carbonaceous network structures offer confinement, catalysis and thermal conductivity for effective hydrogen storage of LiBH₄. Chemical Engineering Journal, 2021, 407: 127156

[34] Chen C S, Liu X Y, Fang Q, . Self-assembly synthesis of CuO/ZnO hollow microspheres and their photocatalytic performance under natural sunlight. Vacuum, 2020, 174: 109198

[35] Zhang X Y, He X S, Kang Z W, . Waste eggshell-derived dual-functional CuO/ZnO/eggshell nanocomposites: (photo)catalytic reduction and bacterial inactivation. ACS Sustainable Chemistry & Engineering, 2019, 7(18): 15762–15771

[36] Zhao S, Shen Y B, Hao F L, . p–n Junctions based on CuO-decorated ZnO nanowires for ethanol sensing application. Applied Surface Science, 2021, 538: 148140

[37] Sahu K, Bisht A, Kuriakose S, . Two-dimensional CuO–ZnO nanohybrids with enhanced photocatalytic performance for removal of pollutants. Journal of Physics and Chemistry of Solids, 2020, 137: 109223

[38] Qin C, Wang Y, Gong Y X, . CuO–ZnO hetero-junctions decorated graphitic carbon nitride hybrid nanocomposite: hydrothermal synthesis and ethanol gas sensing application. Journal of Alloys and Compounds, 2019, 770: 972–980

[39] Wang C, Zhu J W, Liang S M, . Reduced graphene oxide decorated with CuO–ZnO hetero-junctions: towards high selective gas-sensing property to acetone. Journal of Materials Chemistry A: Materials for Energy and Sustainability, 2014, 2(43): 18635–18643

[40] Li H J, Zhang N, Zhao X L, . Modulation of TEA and methanol gas sensing by ion-exchange based on a sacrificial template 3D diamond-shaped MOF. Sensors and Actuators B: Chemical, 2020, 315: 128136

[41] Yin M L, Wang F, Fan H B, . Heterojunction CuO@ZnO microcubes for superior p-type gas sensor application. Journal of Alloys and Compounds, 2016, 672: 374–379

[42] Yang C, Cao X, Wang S, . Complex-directed hybridization of CuO/ZnO nanostructures and their gas sensing and photocatalytic properties. Ceramics International, 2015, 41(1): 1749–1756

[43] Liu X, Sun Y, Yu M, . Enhanced ethanol sensing properties of ultrathin ZnO nanosheets decorated with CuO nanoparticles. Sensors and Actuators B: Chemical, 2018, 255: 3384–3390

[44] Zhang Y B, Yin J, Li L, . Enhanced ethanol gas-sensing properties of flower-like p-CuO/n-ZnO heterojunction nanorods. Sensors and Actuators B: Chemical, 2014, 202: 500–507

[45] Yuan Z Y, Yang C, Meng F L. Strategies for improving the sensing performance of semiconductor gas sensors for high-performance formaldehyde detection: a review. Chemosensors, 2021, 9(7): 179

[46] Han M A, Kim H J, Lee H C, . Effects of porosity and particle size on the gas sensing properties of SnO₂ films. Applied Surface Science, 2019, 481: 133–137

[47] Ren H B, Zhao W, Wang L Y, . Preparation of porous flower-like SnO₂ micro/nano structures and their enhanced gas sensing property. Journal of Alloys and Compounds, 2015, 653: 611–618

[48] Shao S F, Chen X, Chen Y Y, . ZnO nanosheets modified with graphene quantum dots and SnO₂ quantum nanoparticles for room-temperature H₂S sensing. ACS Applied Nano Materials, 2020, 3(6): 5220–5230

[49] Drmosh Q A, Al Wajih Y A, Alade I O, . Engineering the depletion layer of Au-modified ZnO/Ag core–shell films for high-performance acetone gas sensing. Sensors and Actuators B: Chemical, 2021, 338: 129851

[50] Lin T, Lv X, Hu Z, . Semiconductor metal oxides as chemoresistive sensors for detecting volatile organic compounds. Sensors, 2019, 19(2): 233

[51] Samadi S, Nouroozshad M, Zakaria S A. ZnO@SiO₂/rGO core/shell nanocomposite: a superior sensitive, selective and reproducible performance for 1-propanol gas sensor at room temperature. Materials Chemistry and Physics, 2021, 271: 124884

[52] Han C H, Li X W, Shao C L, . Composition-controllable p-CuO/n-ZnO hollow nanofibers for high performance H₂S detection. Sensors and Actuators B: Chemical, 2019, 285: 495–503

[53] Navale Y H, Navale S T, Stadler F J, . Enhanced NO₂ sensing aptness of ZnO nanowire/CuO nanoparticle heterostructure-based gas sensors. Ceramics International, 2019, 45(2): 1513–1522

[54] Mariammal R N, Ramachandran K. Study on gas sensing mechanism in p-CuO/n-ZnO heterojunction sensor. Materials Research Bulletin, 2018, 100: 420–428

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