Boosting Photocatalytic Oxygen Evolution: Purposely Constructing Direct Z-Scheme Photoanode by Modulating the Interface Electric Field

doi:10.1007/s40242-020-0278-9

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	Boosting Photocatalytic Oxygen Evolution: Purposely Constructing Direct Z-Scheme Photoanode by Modulating the Interface Electric Field
	Y. Y. Li, Q. N. Wu, K. Zhang, B. Hu, Y. H. Lin, D. J. Wang and T. F. Xie
	2020
发表期刊	Chemical Research in Chinese Universities
ISSN	1005-9040
卷号	36 期号:6 页码:1059-1067
摘要	Ti-Fe2O3 photoanode has received widespread attention in photoelectrochemical(PEC) water spilling because of its optimized oxidative and reductive capability of composites catalyst. However, its low efficiency could limit its development. Herein, in order to improve the efficiency of PEC water spilling, the all-solid-state direct Z-scheme Ti-ZnFe2O4/Ti-Fe2O3(TZFO/Ti-Fe2O3) nanorod arrays composited with the ideal energy band structure are synthesized by modulating the Fermi level of TZFO for PEC water splitting. The photophysical methods in this work, including the Kelvin probe measurement and transient photovoltage spectroscopy(TPV) measurement, are applied to explore the migration behavior of electric charges at the enhanced interface electric field. Finally, the Z-scheme charge transfer mechanism of TZFO/Ti-Fe2O3 photoanode is proved successfully. Benefiting from the desirable charge transfer at interface electric field, the TZFO/Ti-Fe2O3 exhibits the outstanding photocatalytic oxygen evolution reaction(OER) performance, and the photocurrent of 60TZFO/Ti-Fe2O3 photoanode reaches 2.16 mA/cm(2) at 1.23 V vs. reversible hydrogen electrode(RHE), which is three times higher than that of pure Ti-Fe2O3 photoanode. This work provides a facile approach of modulating interface electric field to optimize the Z-scheme charge-transfer process.
DOI	10.1007/s40242-020-0278-9
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收录类别	SCI
语种	英语
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64339
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Y. Li, Q. N. Wu, K. Zhang, B. Hu, Y. H. Lin, D. J. Wang and T. F. Xie. Boosting Photocatalytic Oxygen Evolution: Purposely Constructing Direct Z-Scheme Photoanode by Modulating the Interface Electric Field[J]. Chemical Research in Chinese Universities,2020,36(6):1059-1067.
APA	Y. Y. Li, Q. N. Wu, K. Zhang, B. Hu, Y. H. Lin, D. J. Wang and T. F. Xie.(2020).Boosting Photocatalytic Oxygen Evolution: Purposely Constructing Direct Z-Scheme Photoanode by Modulating the Interface Electric Field.Chemical Research in Chinese Universities,36(6),1059-1067.
MLA	Y. Y. Li, Q. N. Wu, K. Zhang, B. Hu, Y. H. Lin, D. J. Wang and T. F. Xie."Boosting Photocatalytic Oxygen Evolution: Purposely Constructing Direct Z-Scheme Photoanode by Modulating the Interface Electric Field".Chemical Research in Chinese Universities 36.6(2020):1059-1067.

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