https://scholars.lib.ntu.edu.tw/handle/123456789/503247
標題: | Cobalt-Phosphate-Assisted Photoelectrochemical Water Oxidation by Arrays of Molybdenum-Doped Zinc Oxide Nanorods | 作者: | Lin, Y.-G. Hsu, Y.-K. Chen, Y.-C. Lee, B.-W. Hwang, J.-S. Chen, L.-C. Chen, K.-H. |
關鍵字: | doping; molybdenum; photocatalysis; water splitting; zinc oxides | 公開日期: | 2014 | 出版社: | Wiley-VCH Verlag | 卷: | 7 | 期: | 9 | 起(迄)頁: | 2748-2754 | 來源出版物: | ChemSusChem | 摘要: | We report the first demonstration of cobalt phosphate (Co-Pi)-assisted molybdenum-doped zinc oxide nanorods (Zn1−xMoxO NRs) as visible-light-sensitive photofunctional electrodes to fundamentally improve the performance of ZnO NRs for photoelectrochemical (PEC) water splitting. A maximum photoconversion efficiency as high as 1.05 % was achieved, at a photocurrent density of 1.4 mA cm−2. More importantly, in addition to achieve the maximum incident photon to current conversion efficiency (IPCE) value of 86 %, it could be noted that the IPCE of Zn1−xMoxO photoanodes under monochromatic illumination (450 nm) is up to 12 %. Our PEC performances are comparable to those of many oxide-based photoanodes in recent reports. The improvement in photoactivity of PEC water splitting may be attributed to the enhanced visible-light absorption, increased charge-carrier densities, and improved interfacial charge-transfer kinetics due to the combined effect of molybdenum incorporation and Co-Pi modification, contributing to photocatalysis. The new design of constructing highly photoactive Co-Pi-assisted Zn1−xMoxO photoanodes enriches knowledge on doping and advances the development of high-efficiency photoelectrodes in the solar-hydrogen field. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/503247 | ISSN: | 18645631 | DOI: | 10.1002/cssc.201402025 | SDG/關鍵字: | Charge transfer; Doping (additives); Efficiency; II-VI semiconductors; Light; Light absorption; Molybdenum; Molybdenum oxide; Nanorods; Oxide minerals; Photocatalysis; Photoelectrochemical cells; Solar power generation; Water absorption; Zinc oxide; Incident photon-to-current conversion efficiencies; Interfacial charge transfer; Monochromatic illumination; Photoconversion efficiency; Photoelectrochemical water oxidation; Photoelectrochemicals; Visible light absorption; Water splitting; Cobalt compounds |
顯示於: | 凝態科學研究中心 |
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