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题名:
Synthesis of visible-light-driven BiOBrxI1-xsolid solution nanoplates by ultrasound-assisted hydrolysis method with tunable bandgap and superior photocatalytic activity
作者: Lu, Junlin; Meng QG(孟庆国); Lv HQ(吕海钦); Shui, Lingling; Jin, Mingliang; Zhang, Zhang; Chen ZH(陈志鸿); Yuan MZ(苑明哲); Wang, Xin; Liu, Jun-Ming; Zhou, Guofu
作者部门: 广州中国科学院沈阳自动化研究所分所
通讯作者: Chen ZH(陈志鸿)
关键词: BiOBrxI1-x solid solution ; Visible-light-driven photocatalysts ; Nanoplates
刊名: Journal of Alloys and Compounds
ISSN号: 0925-8388
出版日期: 2018
卷号: 732, 页码:167-177
收录类别: SCI ; EI
EI收录号: 20174404322179
WOS记录号: WOS:000415931900021
产权排序: 2
项目资助者: NSFC (Grant No. 51602111), Xijiang R&D Team (X. Wang), Guangdong Provincial Grant (2015A030310196, 2014B090915005), the Pearl River S&T Nova Program of Guangzhou (201506040045), PCSIRT Project No. IRT13064, the Hundred Talent Program of Chinese Academy Sciences (QG Meng), Guangzhou Post-doctoral Initial Funding and the National 111 Project.
摘要: In this study, a series of visible-light-driven BiOBrxI1-xsolid solution nanoplates photocatalysts are successfully prepared by an ultrasound-assisted hydrolysis method, which does not use organic reagents, with advantages of cost-effectiveness and non-toxicity. Under visible-light irradiation, all of the as-prepared BiOBrxI1-xnanoplates exhibit superior photocatalytic activities compared to those of pure BiOBr and BiOI for the degradation of methyl orange (MO). BiOBr0.3I0.7exhibits the highest photocatalytic activity, corresponding to the degradation of 92% MO in 40 min under visible-light irradiation. The structures and elemental composition of the as-prepared BiOBrxI1-xnanoplates samples are characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and high-resolution transmission electron microscopy. From the results obtained from X-ray photoelectron spectroscopy, UV–vis diffuse reflectance spectroscopy, and transient time-resolved luminescence decay, it is suggested that the enhanced photocatalytic activity of BiOBrxI1-xis possibly related to the narrowing of the band gap and high separation of the photo-generated electron–hole pairs. Electron paramagnetic resonance and mechanistic experiments indicated that [rad]O2−and h+are active radicals for photocatalytic degradation. In conclusion, an ultrasound-assisted hydrolysis method which is free of organic reagents is developed for synthesizing BiOBrxI1-xnanoplates photocatalysts with tunable bandgap and enhanced photocatalytic activity.
语种: 英语
WOS标题词: Science & Technology ; Physical Sciences ; Technology
类目[WOS]: Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
关键词[WOS]: BIOX X ; HIGHLY EFFICIENT ; IRRADIATION ; WATER ; DEGRADATION ; HETEROJUNCTION ; CL ; BR ; REMOVAL ; DYE
研究领域[WOS]: Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
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内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/21223
Appears in Collections:广州中国科学院沈阳自动化研究所分所_期刊论文

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作者单位: 1.Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, Guangdong Province, China
2.Shenyang Institute of Automation Guangzhou, Chinese Academy of Sciences, Guangzhou, 511458, China
3.International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangdong Province, China
4.Institute of Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, Guangdong Province, China
5.Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, China

Recommended Citation:
Lu, Junlin,Meng QG,Lv HQ,et al. Synthesis of visible-light-driven BiOBrxI1-xsolid solution nanoplates by ultrasound-assisted hydrolysis method with tunable bandgap and superior photocatalytic activity[J]. Journal of Alloys and Compounds,2018,732:167-177.
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