Hydrogen and organic synthesis from wastewater with nano photocatalysts: a synergy

Abstract

Nano-photocatalysts exhibit significant potential for diverse applications, including the degradation of organic pollutants, hydrogen generation through water splitting, organic synthesis, and photoelectrochemical conversion. Recently, there has been growing interest in the efficient utilization of wastewater and liquid organic waste as resources for organic synthesis and hydrogen production. This approach offers a promising solution to both energy and environmental challenges by enabling hydrogen and organic synthesis from wastewater using nanophotocatalysts. Dual-functional nanophotocatalysts demonstrated significant potential for efficient catalysis processes. This review provides a comprehensive analysis of various nano-photocatalysts, their synthesis processes, and the underlying photocatalytic mechanisms that drive the synergistic effects, leading to enhanced efficiency. Furthermore, the resulting photocatalytic products and their implications are discussed in detail. Key challenges associated with this emerging technology are identified, along with future research directions to advance its development. By highlighting recent advancements in the use of nano-photocatalysts for hydrogen generation and organic compound synthesis from wastewater and liquid organic waste, this review serves as a valuable resource to guide ongoing and future research efforts in this field.

Keywords

Nano-photocatalysts / organic wastewater / hydrogen production / organic synthesis / synergistic effects

References

[1] Gong Y,Wei Z,Li H.Combination of carbon nitride and carbon nanotubes: synergistic catalysts for energy conversion.ChemSusChem2014;7:2303-9

[2] Dai L,Baek JB.Carbon nanomaterials for advanced energy conversion and storage.Small2012;8:1130-66

[3] George C,D’Anna B,Nizkorodov SA.Heterogeneous photochemistry in the atmosphere.Chem Rev2015;115:4218-58 PMCID:PMC4772778

[4] Hussain MK,Tanveer M,Alrobei H.Fabrication of CuO/MoO₃ p-n heterojunction for enhanced dyes degradation and hydrogen production from water splitting.Int J Hydrogen Energy2022;47:15491-504

[5] Bard AJ.Artificial photosynthesis: solar splitting of water to hydrogen and oxygen.Acc Chem Res1995;28:141-5

[6] Yang J,Han H.Roles of cocatalysts in photocatalysis and photoelectrocatalysis.Acc Chem Res2013;46:1900-9

[7] Tu W,Zou Z.Versatile graphene-promoting photocatalytic performance of semiconductors: basic principles, synthesis, solar energy conversion, and environmental applications.Adv Funct Mater2013;23:4996-5008

[8] Fan W,Wang Y.Semiconductor-based nanocomposites for photocatalytic H₂ production and CO₂ conversion.Phys Chem Chem Phys2013;15:2632-49

[9] Wondraczek L,Méndez-Ramos J,Zhang Q.Shifting the sun: solar spectral conversion and extrinsic sensitization in natural and artificial photosynthesis.Adv Sci2015;2:1500218 PMCID:PMC5063168

[10] Kapilashrami M,Liu YS,Guo J.Probing the optical property and electronic structure of TiO₂ nanomaterials for renewable energy applications.Chem Rev2014;114:9662-707

[11] Kubacka A,Colón G.Advanced nanoarchitectures for solar photocatalytic applications.Chem Rev2012;112:1555-614

[12] Pan J,Shen S,Yin S.Introducing bidirectional axial coordination into BiVO₄@metal phthalocyanine core–shell photoanodes for efficient water oxidation.Angew Chem Int Ed Engl2023;135:e202307246

[13] Li H,Tu W,Zou Z.State-of-the-art progress in diverse heterostructured photocatalysts toward promoting photocatalytic performance.Adv Funct Mater2015;25:998-1013

[14] Zhang H,Shi L,Wang T.Engineering coordination polymers for photocatalysis.Nano Energy2016;22:149-68

[15] Hussain MK,Tanveer M.In-situ fabrication of MoO₃ hexagonal flowers decorated with Co₃O₄ microrods with enhanced photocatalytic activity and stability under visible light irradiation.Mater Chem Phys2023;302:127652

[16] Chen G,Shi R.From solar energy to fuels: recent advances in light-driven C₁ chemistry.Angew Chem Int Ed Engl2019;58:17528-51

[17] Mustafa A,Shuai Y,Tan H.Current technology development for CO₂ utilization into solar fuels and chemicals: a review.J Energy Chem2020;49:96-123

[18] Qi J,Cao R.Solar-to-hydrogen energy conversion based on water splitting.Adv Energy Mater2018;8:1701620

[19] Aslam U,Chavez S.Catalytic conversion of solar to chemical energy on plasmonic metal nanostructures.Nat Catal2018;1:656-65

[20] Wang Q,Linley S.Strategies to improve light utilization in solar fuel synthesis.Nat Energy2022;7:13-24

[21] Agosti A,Amirav L.Photosynthetic H₂ generation and organic transformations with CdSe@CdS-Pt nanorods for highly efficient solar-to-chemical energy conversion.Nano Energy2020;70:104510

[22] Xu X,Shao Z.Fundamental understanding and application of Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ perovskite in energy storage and conversion: past, present, and future.Energy Fuels2021;35:13585-609

[23] Zhou B,Dong W.Gallium nitride-based artificial photosynthesis integrated devices for solar hydrogen generation and carbon dioxide reduction. In: Varghese OK, Souza FL, editors. Conversion of water and CO₂ to fuels using solar energy. Wiley; 2024. pp. 309-39.

[24] Qi MY,Anpo M,Xu YJ.Cooperative coupling of oxidative organic synthesis and hydrogen production over semiconductor-based photocatalysts.Chem Rev2021;121:13051-85

[25] Franchi D.Applications of sensitized semiconductors as heterogeneous visible-light photocatalysts in organic synthesis.ACS Sustainable Chem Eng2020;8:15405-29

[26] Gisbertz S.Heterogeneous photocatalysis in organic synthesis.ChemPhotoChem2020;4:456-75

[27] Molinari R,Argurio P.Recent progress of photocatalytic membrane reactors in water treatment and in synthesis of organic compounds. a review.Catal Today2017;281:144-64

[28] Friedmann D,Kim H,Bahnemann D.Heterogeneous photocatalytic organic synthesis: state-of-the-art and future perspectives.Green Chem2016;18:5391-411

[29] Dai X,Meng S,Chen S.Coupled systems for selective oxidation of aromatic alcohols to aldehydes and reduction of nitrobenzene into aniline using CdS/g-C₃N₄ photocatalyst under visible light irradiation.Appl Catal B Environ2014;158-9:382-90

[30] Huang H,Chai Z.Surface charge-induced activation of Ni-loaded CdS for efficient and robust photocatalytic dehydrogenation of methanol.Appl Catal B Environ2019;257:117869

[31] Bie C,Yu J.Challenges for photocatalytic overall water splitting.Chem2022;8:1567-74

[32] Rahman MZ,Zhang H.Key strategies for enhancing H₂ production in transition metal oxide based photocatalysts.Angew Chem Int Ed Engl2023;135:e202305385

[33] Nishioka S,Wang X,Maeda K.Photocatalytic water splitting.Nat Rev Methods Primers2023;3:226

[34] Ismael M.A review and recent advances in solar-to-hydrogen energy conversion based on photocatalytic water splitting over doped-TiO₂ nanoparticles.Solar Energy2020;211:522-46

[35] Wang Z,Domen K.Recent developments in heterogeneous photocatalysts for solar-driven overall water splitting.Chem Soc Rev2019;48:2109-25

[36] Miseki Y.Photocatalytic water splitting for solar hydrogen production using the carbonate effect and the Z-scheme reaction.Adv Energy Mater2019;9:1801294

[37] Wang Y,Bayazit MK.Bandgap engineering of organic semiconductors for highly efficient photocatalytic water splitting.Adv Energy Mater2018;8:1801084

[38] Maeda K,Lu D.Photocatalyst releasing hydrogen from water.Nature2006;440:295

[39] Yuan YJ,Yu ZT.Noble-metal-free molybdenum disulfide cocatalyst for photocatalytic hydrogen production.ChemSusChem2015;8:4113-27

[40] Moniz SJA,Martin DJ,Tang J.Visible-light driven heterojunction photocatalysts for water splitting - a critical review.Energy Environ Sci2015;8:731-59

[41] Lu Q,Ma Q,Zhang H.2D transition-metal-dichalcogenide-nanosheet-based composites for photocatalytic and electrocatalytic hydrogen evolution reactions.Adv Mater2016;28:1917-33

[42] Zhang N,Pan K,Li Y.Synthesis of pure phase Mg_1.2Ti_1.8O₅ and MgTiO₃ nanocrystals for photocatalytic hydrogen production.Nano Res2016;9:726-34

[43] Fujishima A.Electrochemical photolysis of water at a semiconductor electrode.Nature1972;238:37-8

[44] Yang X,Ahuja R.Recent advancements and future prospects in ultrathin 2D semiconductor-based photocatalysts for water splitting.Catalysts2020;10:1111

[45] Zhong S,Wu S,Zhao L.Hybrid cocatalysts in semiconductor-based photocatalysis and photoelectrocatalysis.J Mater Chem A2020;8:14863-94

[46] Zhang Y,Ran J,Qiao SZ.Atomic-level reactive sites for semiconductor-based photocatalytic CO₂ reduction.Adv Energy Mater2020;10:1903879

[47] Chen S,Xu P.Semiconductor-based photocatalysts for photocatalytic and photoelectrochemical water splitting: will we stop with photocorrosion?.J Mater Chem A2020;8:2286-322

[48] Tahir M,Nawaz T.A perspective on the fabrication of heterogeneous photocatalysts for enhanced hydrogen production.Int J Hydrogen Energy2020;45:24544-57

[49] Wang L.Titanium oxide nanosheets: graphene analogues with versatile functionalities.Chem Rev2014;114:9455-86

[50] Bai S,Li Z.Surface and interface engineering in photocatalysis.ChemNanoMat2015;1:223-39

[51] Martin DJ,Moniz SJ.Efficient visible driven photocatalyst, silver phosphate: performance, understanding and perspective.Chem Soc Rev2015;44:7808-28

[52] Alam M,Khalid N.Enhanced photocatalytic performance of Ag₃PO₄/Mn-ZnO nanocomposite for the degradation of tetracycline hydrochloride.Crystals2022;12:1156

[53] Hussain MK,Tanveer M.Facile fabrication of Z-scheme ZnO/MoO₃ heterojunction as an excellent visible-light responsive photocatalyst for the degradation of rhodamine B and alizarin yellow dyes.Opt Mater2024;148:114794

[54] Khalid N,Tahir M.Enhanced photocatalytic activity of Al and Fe co-doped ZnO nanorods for methylene blue degradation.Ceram Int2019;45:21430-5

[55] Khalid NR,Murtaza G,Ahmad M.A novel Ag₂O/Fe–TiO₂ photocatalyst for CO₂ conversion into methane under visible light.J Inorg Organomet Polym2019;29:1288-96

[56] Banisharif A,Mortazavi Y.Highly active Fe₂O₃-doped TiO₂ photocatalyst for degradation of trichloroethylene in air under UV and visible light irradiation: experimental and computational studies.Appl Catal B Environ2015;165:209-21

[57] Hussain MK,Tahir M,Iqbal T.Enhanced visible light-driven photocatalytic activity and stability of novel ternary ZnO/CuO/MoO₃ nanorods for the degradation of rhodamine B and alizarin yellow.Mater Sci Semicond Process2023;155:107261

[58] Zhu D.Novel Bi₂WO₆ modified by N-doped graphitic carbon nitride photocatalyst for efficient photocatalytic degradation of phenol under visible light.Appl Catal B Environ2020;268:118426

[59] He W,Jiang G,Zhang X.Activation of amorphous Bi₂WO₆ with synchronous Bi metal and Bi₂O₃ coupling: photocatalysis mechanism and reaction pathway.Appl Catal B Environ2018;232:340-7

[60] Tanveer M,Nabi G,Hussain MK.A novel composite (BiVO₄/TiS₂) presenting an excellent Z-scheme photocatalytic degradation for Rhodamine B dye under the visible light irradiation.J Lumin2024;271:120585

[61] Tayebi M.Recent advances in BiVO₄ semiconductor materials for hydrogen production using photoelectrochemical water splitting.Renew Sustain Energy Rev2019;111:332-43

[62] Gurylev V.A review on the development and advancement of Ta₂O₅ as a promising photocatalyst.Mater Today Sustain2022;18:100131

[63] Liu W,Huang S,Tiffany Chen H.Formation and characterization of gray Ta₂O₅ and its enhanced photocatalytic hydrogen generation activity.Int J Hydrogen Energy2020;45:16560-8

[64] Arunachalam P,Amer MS,Ramalingam RJ.Recent developments in the use of heterogeneous semiconductor photocatalyst based materials for a visible-light-induced water-splitting system - a brief review.Catalysts2021;11:160

[65] Qadeer M, Khalid Hussain M, Tanveer M, Munawar S, Nabi G, Henaish A. Sol-gel extended hydrothermal synthesis of BiFeO₃ nano-beads for excellent photocatalytic and photo-electrochemical properties under natural light irradiation.Inorg Chem Commun2023;158:111617

[66] Zhao Y,Liu P.In situ photodeposition of Au nanoparticle plasma: enhanced defect-state g-C₃N₄ photocatalytic hydrogen evolution.Cryst Growth Des2024;24:5794-805

[67] Cheng L,Liao Y.CdS-based photocatalysts.Energy Environ Sci2018;11:1362-91

[68] Sun Y,Gao S.Freestanding tin disulfide single-layers realizing efficient visible-light water splitting.Angew Chem Int Ed Engl2012;124:8857-61

[69] Wang B,Lei Y.Mesoporous silicon carbide nanofibers with in situ embedded carbon for co-catalyst free photocatalytic hydrogen production.Nano Res2016;9:886-98

[70] Li B,Shen Z.Photocatalysis driven by near-infrared light: materials design and engineering for environmentally friendly photoreactions.ACS EST Eng2021;1:947-64

[71] Tan L,Chai S,Mohamed AR.Visible-light-active oxygen-rich TiO₂ decorated 2D graphene oxide with enhanced photocatalytic activity toward carbon dioxide reduction.Appl Catal B Environ2015;179:160-70

[72] Tan L,Chai S.Visible-light-activated oxygen-rich TiO₂ as next generation photocatalyst: importance of annealing temperature on the photoactivity toward reduction of carbon dioxide.Chem Eng J2016;283:1254-63

[73] Rashid R,Gilani MRHS.Advancements in TiO₂-based photocatalysis for environmental remediation: strategies for enhancing visible-light-driven activity.Chemosphere2024;349:140703

[74] Jiang A,Yu S.Dual charge-accepting engineering modified AgIn₅S₈/CdS quantum dots for efficient photocatalytic hydrogen evolution overall H₂S splitting.Appl Catal B Environ2023;332:122747

[75] Jeon TH,Kim H.Dual-functional photocatalytic and photoelectrocatalytic systems for energy- and resource-recovering water treatment.ACS Catal2018;8:11542-63

[76] He Y.Toward practical solar hydrogen production.Chem2018;4:405-8

[77] Dashtian K,Usman M.A comprehensive review on advances in polyoxometalate based materials for electrochemical water splitting.Coord Chem Rev2024;504:215644

[78] Kampouri S.Dual-functional photocatalysis for simultaneous hydrogen production and oxidation of organic substances.ACS Catal2019;9:4247-70

[79] Sun W,Zhu J.A “win-win” photocatalysis: coupling hydrogen production with the synthesis of high value-added organic chemicals.Mater Today Sustain2023;23:100465

[80] Schrauzer GN.Photolysis of water and photoreduction of nitrogen on titanium dioxide.J Am Chem Soc1977;99:7189-93

[81] Mills A.An overview of semiconductor photocatalysis.J Photochem Photobiol A Chem1997;108:1-35

[82] Kampouri S,Valizadeh B.Mixed-phase MOF-derived titanium dioxide for photocatalytic hydrogen evolution: the impact of the templated morphology.ACS Appl Energy Mater2018;1:6541-8

[83] Wang Q.Particulate photocatalysts for light-driven water splitting: mechanisms, challenges, and design strategies.Chem Rev2020;120:919-85

[84] Xie S,Deng J.Visible light-driven C-H activation and C-C coupling of methanol into ethylene glycol.Nat Commun2018;9:1181 PMCID:PMC5862904

[85] Chen S,Domen K.Particulate photocatalysts for overall water splitting.Nat Rev Mater2017;2:17050

[86] Chen ZH,Qi MY,Xu YJ.Benzyl alcohol oxidation and hydrogen generation over MoS₂/ZnIn₂S₄ composite photocatalyst.Res Chem Intermed2022;48:1-12

[87] Liu H,Li D.Photocatalytic hydrogen production coupled with selective benzylamine oxidation over MOF composites.Angew Chem Int Ed Engl2018;130:5477-81

[88] Luo N,Zhang J.Visible-light-driven coproduction of diesel precursors and hydrogen from lignocellulose-derived methylfurans.Nat Energy2019;4:575-84

[89] Zhang X,Zhao F,Wang Y.In-situ-formed Cd and Ag₂S decorated CdS photocatalyst with boosted charge carrier spatial separation for enhancing UV-vis-NIR photocatalytic hydrogen evolution.Appl Catal B Environ2021;298:120620

[90] Naseri A,Samadi M,Ebrahimi M.Recent advances on dual-functional photocatalytic systems for combined removal of hazardous water pollutants and energy generation.Res Chem Intermed2022;48:911-33

[91] Zhu T,Zhang Q,Wang X.Efficient utilization of photogenerated electrons and holes for photocatalytic redox reactions using visible light-driven Au/ZnIn₂S₄ hybrid.J Hazard Mater2019;367:277-85

[92] Zhang S,Li F.Structure-mechanism relationship for enhancing photocatalytic H₂ production.Int J Hydrogen Energy2022;47:37517-30

[93] Chen X,Guo L.Semiconductor-based photocatalytic hydrogen generation.Chem Rev2010;110:6503-70

[94] Rahman MZ,Gascon J.Hole utilization in solar hydrogen production.Nat Rev Chem2022;6:243-58

[95] Ran J,Yu J,Qiao SZ.Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting.Chem Soc Rev2014;43:7787-812

[96] Zhou P,Ma Y.Solar-to-hydrogen efficiency of more than 9% in photocatalytic water splitting.Nature2023;613:66-70

[97] Liu S,Wu M.Organic dyes with multi-branched structures for highly efficient photocatalytic hydrogen evolution under visible-light irradiation.Appl Catal B Environ2022;309:121257

[98] Yang Y,Cheng B,Yu J.Near-infrared-responsive photocatalysts.Small Methods2021;5:e2001042

[99] Wang T,Li X,Liu S.Synergistic Pd single atoms, clusters, and oxygen vacancies on TiO₂ for photocatalytic hydrogen evolution coupled with selective organic oxidation.Small2021;17:e2006255

[100] Rusinque B,de Lasa H.Hydrogen production via Pd-TiO₂ photocatalytic water splitting under near-UV and visible light: analysis of the reaction mechanism.Catalysts2021;11:405

[101] Lyubina TP,Kozlova EA.Photocatalytic hydrogen evolution from aqueous solutions of glycerol under visible light irradiation.Int J Hydrogen Energy2013;38:14172-9

[102] Qi M,Anpo M,Xu Y.Efficient photoredox-mediated C–C coupling organic synthesis and hydrogen production over engineered semiconductor quantum dots.ACS Catal2020;10:14327-35

[103] Jia Q,Jia X,Gao Z.Photocatalytic coupled redox cycle for two organic transformations over Pd/carbon nitride composites.Catal Sci Technol2019;9:5077-89

[104] Li X,Zheng Z,Li C.Pd modified defective HNb₃O₈ with dual active sites for photocatalytic coproduction of hydrogen fuel and value-added chemicals.Appl Catal B Environ2021;296:120381

[105] Pomilla F,Marcì G,Parrino F.Heterogeneous photocatalytic materials for sustainable formation of high-value chemicals in green solvents.Mater Today Sustain2021;13:100071

[106] Changotra R,He Q.Establishing a water-to-energy platform via dual-functional photocatalytic and photoelectrocatalytic systems: a comparative and perspective review.Adv Colloid Interface Sci2022;309:102793

[107] Liu J,Bäckvall JE.Efficient aerobic oxidation of organic molecules by multistep electron transfer.Angew Chem Int Ed Engl2021;60:15686-704 PMCID:PMC9545650

[108] Klibanov AM.Asymmetric enzymatic oxidoreductions in organic solvents.Curr Opin Biotechnol2003;14:427-31

[109] Yadav M,Paritosh K.Organic waste conversion through anaerobic digestion: a critical insight into the metabolic pathways and microbial interactions.Metab Eng2022;69:323-37

[110] Caudillo-Flores U,Fernández-García M.Effect of niobium on the performance of Pd-TiO₂ photocatalysts for hydrogen production.Catal Today2023;419:114147

[111] Yan Z,Xu M.Photocatalysis for synergistic water remediation and H₂ production: a review.Chem Eng J2023;472:145066

[112] Khatami M.Green and eco-friendly synthesis of nanophotocatalysts: an overview.Comments Inorg Chem2021;41:133-87

[113] Li X,Fan Y,Cui F.Biocompatibility and toxicity of nanoparticles and nanotubes.J Nanomater2012;2012:548389

[114] Saravanan A,Hemavathy RV.A review on synthesis methods and recent applications of nanomaterial in wastewater treatment: challenges and future perspectives.Chemosphere2022;307:135713

[115] Kalirajan C,Nathanael AJ,Manivasagam G.A critical review on polymeric biomaterials for biomedical applications.Polymers2021;13:3015 PMCID:PMC8433665

[116] Bokov D,Chupradit S.Nanomaterial by sol-gel method: synthesis and application.Adv Mater Sci Eng2021;2021:5102014

[117] Esposito S.“Traditional” sol-gel chemistry as a powerful tool for the preparation of supported metal and metal oxide catalysts.Materials2019;12:668 PMCID:PMC6416638

[118] Navas D,Castro-Alvarez A.Review on sol-gel synthesis of perovskite and oxide nanomaterials.Gels2021;7:275 PMCID:PMC8700921

[119] Komarneni S,Li Q.Microwave-hydrothermal synthesis of ceramic powders.Mater Res Bull1992;27:1393-405

[120] Hussain MK.Surfactant-assisted synthesis of MoO₃ nanorods and its application in photocatalytic degradation of different dyes in aqueous environment.J Mol Liq2022;346:117871

[121] Fu Q,Zhu H.A solvothermal synthetic route to prepare polycrystalline carbon nitride.Chem Phys Lett1999;314:223-6

[122] Walton RI.Subcritical solvothermal synthesis of condensed inorganic materials.Chem Soc Rev2002;31:230-8

[123] Khater GA,El-Kheshen AA,Farag MM.Use of arc furnace slag and ceramic sludge for the production of lightweight and highly porous ceramic materials.Materials2022;15:1112 PMCID:PMC8838387

[124] Rahaman MN.Ceramic processing and sintering. 2nd edition. 2017: CRC press.

[125] Otitoju T, Ugochukwu Okoye P, Chen G, Li Y, Onyeka Okoye M, Li S. Advanced ceramic components: materials, fabrication, and applications.J Ind Eng Chem2020;85:34-65

[126] Schwarz JA,Contescu A.Methods for preparation of catalytic materials.Chem Rev1995;95:477-510

[127] Shukla A,Bhardwaj A.Calcination temperature induced structural, optical and magnetic transformations in titanium ferrite nanoparticles.Reactions2022;3:224-32

[128] Bogdanović X.Influence of temperature during crystallization setup on precipitate formation and crystal shape of a metalloendopeptidase.Acta Crystallogr Sect F Struct Biol Cryst Commun2011;67:421-3 PMCID:PMC3053177

[129] Theiss FL,Frost RL.Synthesis of layered double hydroxides containing Mg²⁺, Zn²⁺, Ca²⁺ and Al³⁺ layer cations by co-precipitation methods - a review.Appl Surf Sci2016;383:200-13

[130] Dikshit P,Das A.Green synthesis of metallic nanoparticles: applications and limitations.Catalysts2021;11:902

[131] Li X,Chen Z.Biosynthesis of nanoparticles by microorganisms and their applications.J Nanomater2011;2011:1-16

[132] Dridi S,Mahjoubi S,Ly I.One-step spray of Cu₂NiSnS₄ thin films as absorber materials for photovoltaic applications.J Mater Sci Mater Electron2020;31:7193-9

[133] Mazzotta A,Mattoli V.Conformable on-skin devices for thermo-electro-tactile stimulation: materials, design, and fabrication.Mater Adv2021;2:1787-820

[134] Iguchi S,Hosokawa S.A ZnTa₂O₆ photocatalyst synthesized via solid state reaction for conversion of CO₂ into CO in water.Catal Sci Technol2016;6:4978-85

[135] Bouddouch A,Bakiz B.Phase transformation, photocatalytic and photoluminescent properties of BiPO₄ catalysts prepared by solid-state reaction: degradation of rhodamine B.Minerals2021;11:1007

[136] Mazumdar SC,Alam F.Structural, magnetic and transport properties of Gd and Cu Co-doped BiFeO₃ multiferroics.J Appl Mathemat Phys2022;10:2026-39

[137] Zhao W,Cong M.Nanoscale covalent organic frameworks for enhanced photocatalytic hydrogen production.Nat Commun2024;15:6482 PMCID:PMC11294449

[138] Khalid NR,Tahir MB.Fabrication of p–n heterojunction Ag₂O@Ce₂O nanocomposites make enables to improve photocatalytic activity under visible light.Appl Nanosci2021;11:199-206

[139] Choudhary RK,Baitha R.Synthesis of BNiO₃ nanocomposites for photocatalytic hydrogen production applications. J. Inst. Eng. India. Ser. D. 2024.

[140] Thakur A,Kumar I.Visible light-induced functionalization of C−H bonds: opening of new avenues in organic synthesis.Asian J Org Chem2022;11:e202100804

[141] Shang FK,Tan CL,Xu YJ.Nanoscale assembly of CdS/BiVO₄ hybrids for coupling selective fine chemical synthesis and hydrogen production under visible light.ACS Phys Chem Au2022;2:216-24 PMCID:PMC9718317

[142] Luo J,Chen L.Efficient benzaldehyde photosynthesis coupling photocatalytic hydrogen evolution.J Energy Chem2022;66:52-60

[143] Pang Y,Chen W.Colloidal single-layer photocatalysts for methanol-storable solar H₂ fuel.Adv Mater2019;31:e1905540

[144] Liu Z,Cox C.Room temperature stable CO_x-free H₂ production from methanol with magnesium oxide nanophotocatalysts.Sci Adv2016;2:e1501425 PMCID:PMC5428556

[145] Cui W,Xu C,Qiu F.Hydrogen production by photocatalytic decomposition of methanol gas on Pt/TiO₂ nano-film.Catal Commun2004;5:533-6

[146] Gazsi A,Bánsági T.Photocatalytic decompositions of methanol and ethanol on Au supported by pure or N-doped TiO₂.J Photoch Photobio A2013;271:45-55

[147] Uddin N,Zhang C.Zero-emission multivalorization of light alcohols with self-separable pure H₂ fuel.Appl Catal B Environ2021;292:120212

[148] Tan H,Liu M,Zheng Z.Enhanced photocatalytic hydrogen production from aqueous-phase methanol reforming over cyano-carboxylic bifunctionally-modified carbon nitride.Chem Commun2019;55:12503-6

[149] Zhang J,Kumar P,Amal R.Engineering defects in TiO₂ for the simultaneous production of hydrogen and organic products.Appl Catal B Environ2023;333:122765

[150] Tahir M.Ni/MMT-promoted TiO₂ nanocatalyst for dynamic photocatalytic H₂ and hydrocarbons production from ethanol-water mixture under UV-light.Int J Hydrogen Energy2017;42:28309-26

[151] Zhang X,Yun R,Zhang B.Increasing the activity and selectivity of TiO₂-supported Au catalysts for renewable hydrogen generation from ethanol photoreforming by engineering Ti³⁺ defects.ACS Sustainable Chem Eng2019;7:13856-64

[152] Li P,Gao S.Boosting photocatalytic hydrogen production coupled with benzyl alcohol oxidation over CdS/metal–organic framework composites.Chem Eng J2021;421:129870

[153] Jiang D,Zhang Z.Highly efficient simultaneous hydrogen evolution and benzaldehyde production using cadmium sulfide nanorods decorated with small cobalt nanoparticles under visible light.J Catal2018;357:147-53

[154] Tayyab M,Min S.Simultaneous hydrogen production with the selective oxidation of benzyl alcohol to benzaldehyde by a noble-metal-free photocatalyst VC/CdS nanowires.Chin J Catal2022;43:1165-75

[155] Zhang Q,Zhao Q,Yang S.Visible light-driven the splitting of ethanol into hydrogen and acetaldehyde catalyzed by fibrous AgNPs/CdS hybrids at room temperature.J Taiwan Inst Chem E2019;102:182-9

[156] Fu X,Wang X,Fu X.Photocatalytic reforming of ethanol to H₂ and CH₄ over ZnSn(OH)₆ nanocubes.Int J Hydrogen Energy2011;36:1524-30

[157] Liu M,Dong B.Photocatalytic coproduction of H₂ and industrial chemical over MOF-derived direct Z-scheme heterostructure.Appl Catal B Environ2020;273:119066

[158] Zhang F,Wang H.Realizing synergistic effect of electronic modulation and nanostructure engineering over graphitic carbon nitride for highly efficient visible-light H₂ production coupled with benzyl alcohol oxidation.Appl Catal B Environ2020;269:118772

[159] Lin Q,Qi M.Photoredox dual reaction for selective alcohol oxidation and hydrogen evolution over nickel surface-modified ZnIn₂S₄.Appl Catal B Environ2020;271:118946

[160] Hao H,Wang W,Liu X.Photocatalytic hydrogen evolution coupled with efficient selective benzaldehyde production from benzyl alcohol aqueous solution over ZnS-Ni_xS_y composites.ACS Sustain Chem Eng2019;7:10501-8