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化工新型材料  2019, Vol. 47 Issue (5): 203-207    
  科学研究 本期目录 | 过刊浏览 | 高级检索 |
可见光响应型球形Zn/BiOBr的制备及其光催化性能研究
徐聪聪1,2, 刘成伦1,2*, 徐龙君2
1.重庆大学化学化工学院,重庆401331;
2.煤矿灾害动力学与控制国家重点实验室,重庆400044
Synthesis and the photocatalysis of visible-light-sensitive spherical Zn/BiOBr
Xu Congcong1,2, Liu Chenglun1,2, Xu Longjun2
1.College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 401331;
2.State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing 400044
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摘要 采用溶剂热法制备Zn2+掺杂的溴氧化铋(BiOBr)(Zn/BiOBr)光催化剂,通过X射线衍射仪、扫描电子显微镜、比表面积孔径分析仪对其结构形貌进行分析表征,并考察了其对罗丹明B(RhB)的光催化活性。结果表明,Zn2+掺杂量不同的Zn/BiOBr均为四方晶型,掺入Zn2+后Zn/BiOBr样品的禁带宽度缩小、比表面积增大,光催化活性均明显提高,且10%Zn/BiOBr光催化活性最高;用蓝色LED光照射120min,其对RhB溶液的光降解率达到96%,比纯BiOBr的降解效率提高16%。循环使用3次后,Zn/BiOBr降解率仍达到85%,光催化过程中h+和·O-2是主要的活性物质。
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徐聪聪
刘成伦
徐龙君
关键词:  Zn/BiOBr  可见光催化活性  LED  光降解    
Abstract: Zn2+ doped BiOBr (Zn/BiOBr) photocatalysts were prepared by solvothermal method,the structural and the photocatalytic performances of products were characterized by SEM,XRD,DRS,BET and the photo-degradation of rhodamine B (RhB).Experimental results showed that Zn/BiOBr were tetragonal phase,Zn/BiOBr samples had lower band gaps and higher specific surface area,which contributed to the higher photocatalytic performance.What is more,10% Zn/BiOBr samples revealed the most efficient for degradating RhB and the degradation rate were 96% within 120min under blue LED,which increased by 16% than that of pure BiOBr.After cycling for three times,the degradation rate of RhB maintained 85%.The results also suggested that h+ and ·O-2 were the main reactive species in the photocatalytic process for Rh B degradation.
Key words:  Zn/BiOBr    visible photocatalytic activity    LED    photodegradation
收稿日期:  2017-12-28                     发布日期:  2019-06-17      期的出版日期:  2019-05-20
基金资助: 重庆市自然科学进展重点项目(CSTC2015jcyjBX0015);重庆市国土局项目(CQGT-KJ-2014)
通讯作者:  刘成伦(1963-),女,博士,教授,从事无机催化材料研究工作。   
作者简介:  徐聪聪(1991-),男,硕士,研究方向为光催化材料。
引用本文:    
徐聪聪, 刘成伦, 徐龙君. 可见光响应型球形Zn/BiOBr的制备及其光催化性能研究[J]. 化工新型材料, 2019, 47(5): 203-207.
Xu Congcong, Liu Chenglun, Xu Longjun. Synthesis and the photocatalysis of visible-light-sensitive spherical Zn/BiOBr. New Chemical Materials, 2019, 47(5): 203-207.
链接本文:  
http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2019/V47/I5/203
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