气候变化领域集成服务门户(CCPortal): Boosting the solar water oxidation performance of a BiVO4 photoanode by crystallographic orientation control

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DOI	10.1039/c8ee00125a
	Boosting the solar water oxidation performance of a BiVO4 photoanode by crystallographic orientation control
	Han H.S.; Shin S.; Kim D.H.; Park I.J.; Kim J.S.; Huang P.-S.; Lee J.-K.; Cho I.S.; Zheng X.
发表日期	2018
ISSN	17545692
起始页码	1299
结束页码	1306
卷号	11 期号:5
英文摘要	Materials with low crystal symmetry often exhibit anisotropic properties, allowing the tuning of their physical and chemical properties via crystallographic orientation and exposed facet control. Herein, for the first time, we have demonstrated that pristine BiVO4 with a preferred [001] growth orientation and exposed (001) facets exhibits excellent intrinsic charge transport properties and surface reactivity. Using preferentially [001]-oriented BiVO4 (p-BVO) as a photoanode for photoelectrochemical water splitting, an impressive photocurrent density at 1.23 V vs. the reversible hydrogen electrode (RHE) is achieved, which is approximately 16 times higher than that exhibited by a photoanode based on randomly oriented BiVO4. Importantly, when the surface of p-BVO is further roughened and decorated with an oxygen evolution electrocatalyst, photocurrent densities of ∼3.5 and ∼6.1 mA cm-2 are achieved at 0.6 and 1.23 VRHE, respectively; the latter value corresponds to ∼82% of the theoretically achievable photocurrent density for BiVO4 under 1 sun illumination. Our results demonstrate the effectiveness of crystal orientation and exposed facet control in optimizing materials for solar water-splitting applications. © 2018 The Royal Society of Chemistry.
英文关键词	Bismuth compounds; Crystal symmetry; Electrocatalysts; Photocurrents; Anisotropic property; Crystallographic orientation control; Crystallographic orientations; Photocurrent density; Photoelectrochemical water splitting; Physical and chemical properties; Reversible hydrogen electrodes; Solar water splitting; Crystal orientation; anisotropy; catalyst; control system; crystal structure; electrochemical method; electrode; hydrogen; inorganic compound; oxidation; performance assessment; physicochemical property
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190252
作者单位	Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, United States; Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea; Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261, United States; Department of Materials Science and Engineering, Energy Systems Research, Ajou University, Suwon, 16499, South Korea
推荐引用方式 GB/T 7714	Han H.S.,Shin S.,Kim D.H.,et al. Boosting the solar water oxidation performance of a BiVO4 photoanode by crystallographic orientation control[J],2018,11(5).
APA	Han H.S..,Shin S..,Kim D.H..,Park I.J..,Kim J.S..,...&Zheng X..(2018).Boosting the solar water oxidation performance of a BiVO4 photoanode by crystallographic orientation control.Energy & Environmental Science,11(5).
MLA	Han H.S.,et al."Boosting the solar water oxidation performance of a BiVO4 photoanode by crystallographic orientation control".Energy & Environmental Science 11.5(2018).