Efficient photocatalytic hydrogen production under visible-light irradiation with 2D Molybdenum nitride cocatalyst

Abstract

Efficient visible-light-driven hydrogen production in the absence of noble metal is one of the major challenges for the application of photocatalytic water splitting. Herein, using cadmium sulfide (CdS) as a typical photocatalyst, we report on the synthesis of composite photocatalyst (CdS/MN) with CdS nanoparticles attached on two-dimensional (2D) layered molybdenum nitride (MN). The introduction of MN brings drastically enhanced photocatalytic activity of CdS by more than eight times, with an optimized hydrogen-production rate of ~58.4 mmol·h^-1·g^-1 and an apparent quantum yield of 62.5%. Characterization results indicate the charge transfer from CdS to MN for more efficient utilization of long-lived photogenerated electrons, with average lifetime of photogenerated charge carriers in CdS and CdS/MN estimated as 3.40 and 4.63 ns, respectively, and that MN could help to reduce the overpotential (280 mV) of hydrogen production reaction. Therefore, the excellent photocatalytic performance is attributed to the cocatalytic effect of 2D MN that helps to facilitate the charge separation and provides reactive sites for promoting hydrogen production reaction. This work provides an excellent example of efficient photocatalytic systems consisting of earth-abundant elements.

Keywords

Photocatalysis / hydrogen production / cocatalyst / molybdenum nitride

References

[1] Nishioka S,Wang X,Maeda K.Photocatalytic water splitting.Nat Rev Methods Primers2023;3:42

[2] Song H,Huang H,Ye J.Solar-driven hydrogen production: recent advances, challenges, and future perspectives.ACS Energy Lett2022;7:1043-65

[3] Jiang Z,Shangguan W.Recent advances of hydrogen production through particulate semiconductor photocatalytic overall water splitting.Front Energy2022;16:49-63

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

[5] Schneider J,Takeuchi M.Understanding TiO₂ photocatalysis: mechanisms and materials.Chem Rev2014;114:9919-86

[6] Chen X,Yu PY.Increasing solar absorption for photocatalysis with black hydrogenated titanium dioxide nanocrystals.Science2011;331:746-50

[7] Takata T,Sakata Y.Photocatalytic water splitting with a quantum efficiency of almost unity.Nature2020;581:411-4

[8] Tian L,Dong Y.Improved overall water splitting for hydrogen production on aluminium-doped SrTiO₃ photocatalyst via tuned surface band bending.Environ Chem Lett2023;21:1257-64

[9] Wang X,Thomas A.A metal-free polymeric photocatalyst for hydrogen production from water under visible light.Nat Mater2009;8:76-80

[10] Zhao D,Shen S.Design of polymeric carbon nitride-based heterojunctions for photocatalytic water splitting: a review.Environ Chem Lett2022;20:3505-23

[11] Zhang K.Metal sulphide semiconductors for photocatalytic hydrogen production.Catal Sci Technol2013;3:1672

[12] Yan H,Ma G.Visible-light-driven hydrogen production with extremely high quantum efficiency on Pt-PdS/CdS photocatalyst.J Catal2009;266:165-8

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

[14] Ge H,Cheng B,Ho W.S-scheme heterojunction TiO₂/CdS nanocomposite nanofiber as H₂-production photocatalyst.ChemCatChem2019;11:6301-9

[15] Chen Y,Lu G(M),Guo L.Nanoparticles enwrapped with nanotubes: a unique architecture of CdS/titanate nanotubes for efficient photocatalytic hydrogen production from water.J Mater Chem2011;21:5134-41

[16] Liu M,Zhou Z.Twin-induced one-dimensional homojunctions yield high quantum efficiency for solar hydrogen generation.Nat Commun2013;4:2278

[17] Hao X,Cui Z,Wang Y.Self-constructed facet junctions on hexagonal CdS single crystals with high photoactivity and photostability for water splitting.Appl Catal B Environ2019;244:694-703

[18] Jin J,Liu G.Single crystal CdS nanowires with high visible-light photocatalytic H₂-production performance.J Mater Chem A2013;1:10927

[19] Xu Y,Xu R,Zhang B.Synthesis of ultrathin CdS nanosheets as efficient visible-light-driven water splitting photocatalysts for hydrogen evolution.Chem Commun2013;49:9803-5

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

[21] Wang H,Chen Z.Semiconductor heterojunction photocatalysts: design, construction, and photocatalytic performances.Chem Soc Rev2014;43:5234-44

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

[23] Dong J,Wu Q.Facile preparation of Pt/CdS photocatalyst by a modified photoreduction method with efficient hydrogen production.International J Hydrogen Energy2018;43:2139-47

[24] Xu Z,Li C.Rational synthesis of Au-CdS composite photocatalysts for broad-spectrum photocatalytic hydrogen evolution.ACS Nano2023;17:11655-64

[25] Deng D,Fu Q,Tian Z.Catalysis with two-dimensional materials and their heterostructures.Nat Nanotechnol2016;11:218-30

[26] Jin H,Chen B.Molten salt-directed catalytic synthesis of 2D layered transition-metal nitrides for efficient hydrogen evolution.Chem2020;6:2382-94

[27] Dang Y,Wang W.Improving the photocatalytic H₂ evolution of CdS by adjusting the (002) crystal facet.J Phys Chem C2022;126:1346-55

[28] Guan X.Cocatalytic effect of SrTiO₃ on Ag₃PO₄ toward enhanced photocatalytic water oxidation.ACS Catal2014;4:3020-6

[29] Tang Y,Li B.Electronic structure modulation of oxygen-enriched defective CdS for efficient photocatalytic H₂O₂ production.Small2024;2400376

[30] Ye X,Zhang Z.Mechanism insights for efficient photocatalytic reforming of formic acid with tunable selectivity: accelerated charges separation and spatially separated active sites.Appl Catal B Environ2023;338:123073

[31] Ye X,Zhang Z.Syngas production by photoreforming of formic acid with 2D V_xW_1-xN_1.5 solid solution as an efficient cocatalyst.Front Energy2024;1-10

[32] Shi J,Liang Z.The roles of defect states in photoelectric and photocatalytic processes for Zn_xCd_1-xS.Energy Environ Sci2011;4:466-70

[33] Patriarchea C,Koutsouroubi ED.Enhancing interfacial charge transfer in mesoporous MoS₂/CdS nanojunction architectures for highly efficient visible-light photocatalytic water splitting.Inorg Chem Front2022;9:625-36

[34] Kannan K,Meshesha MM.Impressive efficiency of zinc oxide-manganese oxide/MAX composite in two-electrode system for photovoltaic-electrolyzer water splitting.Colloids Surf A Physicochem Eng Aspects2024;689:133599

[35] Zong X,Wu G.Enhancement of photocatalytic H₂ evolution on CdS by loading MoS₂ as cocatalyst under visible light irradiation.J Am Chem Soc2008;130:7176-7

[36] Tian L,Wang F.Integrating noble-metal-free metallic vanadium carbide cocatalyst with CdS for efficient visible-light-driven photocatalytic H₂ evolution.Appl Catal B Environ2019;259:118029

[37] Chen H,Sun Z,Zhang L.Cobalt nitride as an efficient cocatalyst on CdS nanorods for enhanced photocatalytic hydrogen production in water.Catal Sci Technol2017;7:1515-22

[38] Fu W,Si Y.Phosphatized GaZnInON nanocrystals with core-shell structures for efficient and stable pure water splitting via four-electron photocatalysis.Chem Eng J2021;410:128391