Enhanced photocatalytic hydrogen evolution along with byproducts suppressing over Z-scheme CdxZn1-xS/Au/g-C3N4 photocatalysts under visible light | |
Zhao, H (Zhao, He); Ding, XL (Ding, Xiaoling); Zhang, B (Zhang, Bing); Li, YX (Li, Yingxuan); Wang, CY (Wang, Chuanyi) | |
刊名 | SCIENCE BULLETIN
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2017 | |
卷号 | 62期号:9页码:602-609 |
关键词 | Hydrogen Evolution Cdxzn1-xs/au/g-c3n4 Byproducts Z-scheme Visible Light |
ISSN号 | 2095-9273 |
DOI | 10.1016/j.scib.2017.03.005 |
英文摘要 | Inspired by natural photosynthesis, a new series of Z-scheme CdxZn1-xS/Au/g-C3N4 photocatalysts were synthesized via depositing Au particles on g-C3N4, followed by anchoring CdxZn1-xS solid solution on the pre-formed Au/g-C3N4 for photocatalytic hydrogen evolution. Their structure, morphology and optical property were investigated in detail. Photocatalytic activities of the developed photocatalysts for water splitting were evaluated under visible-light irradiation (lambda > 420 nm) using glucose as electron donor. The highest hydrogen evolution rate of 123 mu mol g(-1) h(-1) is achieved by Cd0.8Zn0.2S/Au/g-C3N4,which is 52.2 and 8.63 times higher than that of Au/g-C3N4 and CdS/Au/g-C3N4, respectively. The results of photoluminescence spectra, photoelectrochemical and time-resolved photoluminescence spectra indicate that the improved photocatalytic activities for CdxZn1-xS/Au/g-C3N4 are due to the efficient separation of photogenerated carriers. In addition, it is noteworthy that the undesired byproducts CO and CO2 are greatly reduced by introducing CdxZn1-xS over /Au/g-C3N4 surface. In the photocatalytic process, gluconic acid originated from the reaction of photogenerated hydroxyl radical with glucose plays a vital role on suppressing the formation of the gas byproducts. The present work will provide a new strategy to design Z-scheme photocatalysts with enhanced efficiency for water splitting along with suppressing the byproducts. (C) 2017 Science China Press. |
WOS记录号 | WOS:000403562500003 |
内容类型 | 期刊论文 |
源URL | [http://ir.xjipc.cas.cn/handle/365002/4854] ![]() |
专题 | 新疆理化技术研究所_中国科学院特殊环境功能材料与器件重点试验室 |
作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China 3.Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China |
推荐引用方式 GB/T 7714 | Zhao, H ,Ding, XL ,Zhang, B ,et al. Enhanced photocatalytic hydrogen evolution along with byproducts suppressing over Z-scheme CdxZn1-xS/Au/g-C3N4 photocatalysts under visible light[J]. SCIENCE BULLETIN,2017,62(9):602-609. |
APA | Zhao, H ,Ding, XL ,Zhang, B ,Li, YX ,&Wang, CY .(2017).Enhanced photocatalytic hydrogen evolution along with byproducts suppressing over Z-scheme CdxZn1-xS/Au/g-C3N4 photocatalysts under visible light.SCIENCE BULLETIN,62(9),602-609. |
MLA | Zhao, H ,et al."Enhanced photocatalytic hydrogen evolution along with byproducts suppressing over Z-scheme CdxZn1-xS/Au/g-C3N4 photocatalysts under visible light".SCIENCE BULLETIN 62.9(2017):602-609. |
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