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题名: Effect of surface loading and bulk doping of La3+ on the thermal stability and photocatalytic activity of Bi2O2CO3
作者: Li, Shuai1;  Zhang, Jing1;  Chen, Xuebing1;  Feng, Zhaochi2;  Li, Can2
关键词: Bi2O2CO3 ;  La3+ modifying ;  Impregnation method ;  Coprecipitation method ;  Photocatalysis
刊名: MATERIALS RESEARCH BULLETIN
发表日期: 2017-10-01
DOI: 10.1016/j.materresbull.2017.05.058
卷: 94, 页:127-133
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Materials Science, Multidisciplinary
研究领域[WOS]: Materials Science
英文摘要: The Bi2O2O3 modified Le. was synthesized using two methods of co-precipitation (La-Bi2O2O3) and wet impregnation (La/Bi2O2O3). The effects of the above two modification methods on the stability of Bi2O2CO3 after calcination and the physicochemical properties of Bi2O2CO3 were investigated by XRD, SEM, BET, and XPS. As compared with La-Bi2O2O3, it is observed that Bi2O2CO3 can be effectively stabilized by impregnation method, as La3+ is mainly dispersed onto the surface of Bi2O2O3. The photocatalytic activities for the methyl orange degradation for the La/Bi2O2CO3 and the La-Bi2O2CO3 samples were tested, and the results showed that surface doping (impregnation method) is benefit for the improvement in the photocatalytic activity, as compared with bulk doping (coprecipitation method). PL characterization revealed the differences in the photocatalytic process for surface doping and bulk doping. The surface modification of La3+ greatly suppresses the charge recombination of photogenerated electron hole pairs in Bi2O2CO3, which would be beneficial to improve their photocatalytic activity. (C) 2017 Elsevier Ltd. All rights reserved.
关键词[WOS]: RHODAMINE-B ;  DEGRADATION ;  TIO2 ;  FABRICATION ;  COMPOSITES ;  PHASE ;  NANOSTRUCTURES ;  MICROSPHERES ;  TEMPERATURE ;  BI2O3
语种: 英语
WOS记录号: WOS:000409151200018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149993
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Liaoning Shihua Univ, Sch Chem & Mat Sci, POB 110, Fushun 113001, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Li, Shuai,Zhang, Jing,Chen, Xuebing,et al. Effect of surface loading and bulk doping of La3+ on the thermal stability and photocatalytic activity of Bi2O2CO3[J]. MATERIALS RESEARCH BULLETIN,2017,94:127-133.
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