Synthesis of olive-green few-layered BiOI for efficient photoreduction of CO2 into solar fuels under visible/near-infrared light

被引：114

作者：

Ye, Liqun ^{[1
]}

Wang, Hui ^{[2
,3
]}

Jin, Xiaoli ^{[1
]}

Su, Yurong ^{[1
]}

Wang, Dongqi ^{[2
,3
]}

Xie, Haiquan ^{[1
]}

Liu, Xiaodi ^{[1
]}

Liu, Xinxin ^{[1
]}

机构：

[1] Nanyang Normal Univ, Coll Chem & Pharmaceut Engn, Nanyang 473061, Peoples R China

[2] Chinese Acad Sci, CAS Key Lab Nucl Radiat & Nucl Energy Tech, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Inst High Energy Phys, Multidisciplinary Initiat Ctr, Beijing 100049, Peoples R China

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2016年 / 144卷

基金：

中国国家自然科学基金;

关键词：

Bismuth oxyiodide; Few-layer; Photocatalysis; Oxygen vacancy; Carbon dioxide; Solar fuels; PHOTOCATALYTIC H-2 PRODUCTION; HYDROGEN-PRODUCTION; NANOSHEETS; WATER; TIO2; PHOTOREACTIVITY; NANOMATERIALS; FACETS; BR; CL;

D O I：

10.1016/j.solmat.2015.10.022

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Olive-green few-layered BiOI with expanded spacing of the (001) facets and oxygen vacancy is successfully synthesized and characterized. The experimental analysis and theoretical calculation demonstrate that the expanded facets spacing and oxygen vacancy of few-layered BiOI result in enhanced separation efficiency of photoinduced carriers and photon absorption efficiency. Therefore, few-layered BiOI shows much higher photocatalytic activity for CO2 conversion than that of bulk BiOI under visible or near-infrared (NIR) light And the apparent quantum yields (AQY) are 0.14% and 0.02% for few-layered BiOI under 420 and 700 nm monochromatic light irradiation, respectively. These findings deep our understanding of few-layered BiOX (X=Cl,Br,I) photocatalysts, and propose a new route to design high efficient photocatalysts for energy and environmental photocatalysis. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：732 / 739

页数：8

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