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题名: Facile one-pot solvothermal preparation of Modoped Bi2WO6 biscuit-like microstructures for visible-light-driven photocatalytic water oxidation
作者: Etogo, A; Liu, R; Ren, JB; Qi, LW; Zheng, CC; Ning, JQ(宁吉强); Zhong, YJ; Hu, Y
通讯作者: Hu, Y
刊名: JOURNAL OF MATERIALS CHEMISTRY A
发表日期: 2016
DOI: 10.1039/c6ta04923k
卷: 4, 期:34
收录类别: SCI ; EI
文章类型: 期刊论文
部门归属: 大科学装置
英文摘要: The adsorption behavior and the separation efficiency of photogenerated electron-hole pairs are two important elements in estimating the photocatalytic activity of a photocatalyst. In this work, we have developed a facile one-pot solvothermal method for the preparation of Mo-doped Bi2WO6 with uniform three-dimensional (3D) hierarchical porous biscuit-like microstructures (PBMs). Mo doping is found to have two important roles in the synthesis of Bi2WO6 particles, leading to porous microstructures and adjusting band gaps of the Bi2MoxW1-xO6 particles. The band structure of the as-prepared porous Bi2MoxW1-xO6 products is characterized by UV-vis diffuse reflectance spectroscopy and valence-band X-ray photoelectron spectroscopy. Density functional theory (DFT) calculations give further insights into the band structure of the Bi2MoxW1-xO6 products. In all the samples, Bi2Mo0.21W0.79O6 PBMs exhibit a very efficient catalytic performance in oxidizing water under visible light irradiation (lambda > 420 nm), with an average O-2 evolution rate of up to 147.2 mu mol h(-1) g(-1) and an apparent quantum efficiency (QE) of 3.1% at 420 nm, representing a 2 times more enhancement compared with the non-doped Bi2WO6 sample. This study provides a simple method for designing metal-doped semiconductors with porous structures for different applications.
关键词[WOS]: RAMAN-SPECTROSCOPY ; HETEROSTRUCTURED MICROSPHERES ; CERIA NANOCRYSTALS ; DOPED BI2WO6 ; SUBSTITUTION ; PHOTOACTIVITY ; PERFORMANCE ; OXIDE ; HETEROJUNCTION ; IRRADIATION
语种: 英语
JCR小类分区: 一区
WOS记录号: WOS:000382110200027
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/4890
Appears in Collections:大科学装置_期刊论文

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Recommended Citation:
Etogo, A,Liu, R,Ren, JB,et al. Facile one-pot solvothermal preparation of Modoped Bi2WO6 biscuit-like microstructures for visible-light-driven photocatalytic water oxidation[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(34).
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