Cupric oxide thin film as an efficient photocathode for photoelectrochemical water reduction
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Preparing various types of thin films of oxide semiconductors is a promising approach to fabricate efficient photoanodes and photocathodes for hydrogen production via photoelectrochemical (PEC) water splitting. In this work, we investigate the feasibility of an efficient photocathode for PEC water reduction of a p-type oxide semiconductor cupric oxide (CuO) thin film prepared via a facile method combined with sputtering Cu metallic film on fluorine-doped thin oxide (FTO) coated glass substrate and subsequent thermal oxidation of the sputtered Cu metallic film in dry air. Characterization of the structural, optical, and PEC properties of the CuO thin film prepared at various Cu sputtering powers reveals that we can obtain an optimum CuO thin film as an efficient PEC photocathode at a Cu sputtering power of 60 W. The photocurrent density and the optimal photocurrent conversion efficiency for the optimum CuO thin film photocathode are found to be −0.3 mA/cm2 and 0.09% at 0.35 V vs. RHE, respectively. These results provide a promising route to fabricating earth-abundant copper-oxide-based photoelectrode for sunlight-driven hydrogen generation using a facile method.
Abstract
Preparing various types of thin films of oxide semiconductors is a promising approach to fabricate efficient photoanodes and photocathodes for hydrogen production via photoelectrochemical (PEC) water splitting. In this work, we investigate the feasibility of an efficient photocathode for PEC water reduction of a p-type oxide semiconductor cupric oxide (CuO) thin film prepared via a facile method combined with sputtering Cu metallic film on fluorine-doped thin oxide (FTO) coated glass substrate and subsequent thermal oxidation of the sputtered Cu metallic film in dry air. Characterization of the structural, optical, and PEC properties of the CuO thin film prepared at various Cu sputtering powers reveals that we can obtain an optimum CuO thin film as an efficient PEC photocathode at a Cu sputtering power of 60 W. The photocurrent density and the optimal photocurrent conversion efficiency for the optimum CuO thin film photocathode are found to be −0.3 mA/cm2 and 0.09% at 0.35 V vs. RHE, respectively. These results provide a promising route to fabricating earth-abundant copper-oxide-based photoelectrode for sunlight-driven hydrogen generation using a facile method.
참고문헌 (19)
- Nathan S. Lewis, "Powering the planet: Chemical challenges in solar energy utilization", Proceedings of the National Academy of Sciences, 103(43), pp.15729~15735 (2006), Proceedings of the National Academy of Sciences[DOI]
- P.V. Kamat, "Meeting the clean energy demand: Nanostructure architecture for sloar energy conversion", J. Phys. Chem. C, 111, pp.2834~2860 (2007)
- Y, Yang, "Cu2O", CuO bilayered composite as a high-efficiency photocathode for photoelectrochemical hydrogen evolution reaction, 2016, pp.6, 30158~
- A. Kudo, "Heterogeneous photocatalyst materials for water splitting", Chem. Soc. Rev, 38, pp.253~278 (2009)
- F. E. Osterloch, "Inorganic nanostructures for photoelectrochemical and photocatalytic water splitting", Chem. Soc. Rev, 42, pp.2294~2320 (2013)
- X. Chen, "Semiconductor-based photocatalytic hydrogen generation", Chem. Rev, 110, pp.6503~6570 (2010)
- Y. Liu, "Design of sandwich-structured ZnO", ZnS, Nano Res, pp.2015, 8[DOI]
- R. Krol, "Photoelectrochemical hydrogen production" (2012), Springer
- M.G. Walter, "Solar water splitting cells", Chem. Rev, 110, pp.6446~6473 (2010)
- 박종현, "수직으로 정렬된 산화아연 나노막대 광전극의 광전기화학적 특성", 한국표면공학회지, 51(4), pp.237~242 (2018), 한국표면공학회[DOI]
- 김소영, "Cu2O Thin Film Photoelectrode Embedded with CuO Nanorods for Photoelectrochemical Water Oxidation", 한국표면공학회지, 52(5), pp.258~264 (2019), 한국표면공학회[DOI]
- H. Bae, "Nanostructured CuO with a thin g-C3N4 layer as a highly efficient photocathode for solar water splitting", RSC Adv, 11, pp.16083~16089 (2021)
- D.S . Murali, "Synthesis of Cu2O from CuO thin films:Optical and electrical properties", AIP Adv., 5, pp.047143~ (2015)
- Nguyen Le Hung, "Zinc Oxide Wire-Like Thin Films as Nitrogen Monoxide Gas Sensor", 한국재료학회지, 25(7), pp.358~363 (2015), 한국재료학회
- H. F. Goldstein, "Raman study of CuO single crystal", Phys. Rev., B, 41, pp.7192~7194 (1990)
- P. Sinsermsuksakui, "Atomic layer deposition of tin monosulfide thin films", Adv. Energy Mater, 1, pp.1116~1125 (2011)
- G. Ma, "From molecules to materials: Pathways to artificial photosynthesis", pp.16~ (2015), Springer
- D. T. Sawyer, "Electrochemistry for chemists", pp.196~ (1995), Wiley
- Z. Kang, "Enhanced photoelectrochemical property of ZnO nanorods array synthesized on reduced graphene oxide for self-powered biosensing application", Biosens. Bioelectron, 64, pp.499~504 (2015)