[1]杨水金,张志,周昊冉.Bi/Bi2O2CO3光催化剂的制备及其光催化性能的研究[J].徐州工程学院学报(自然科学版),2019,(03):21-26,42.
 YANG Shuijin,ZHANG Zhi,ZHOU Haoran.Preparation of Bi/Bi2O2CO3 Photocatalyst and Its Photocatalytic Activity[J].Journal of Xuzhou Institute of Technology(Natural Sciences Edition),2019,(03):21-26,42.
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Bi/Bi2O2CO3光催化剂的制备及其光催化性能的研究()
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《徐州工程学院学报》(自然科学版)[ISSN:1674-358X/CN:32-1789/N]

卷:
期数:
2019年03期
页码:
21-26,42
栏目:
教授论坛
出版日期:
2019-09-15

文章信息/Info

Title:
Preparation of Bi/Bi2O2CO3 Photocatalyst and Its Photocatalytic Activity
文章编号:
1674-358X(2019)03-0021-06
作者:
杨水金张志周昊冉
(湖北师范大学 化学化工学院,湖北 黄石435002)
Author(s):
YANG ShuijinZHANG ZhiZHOU Haoran
(College of Chemistry and Chemical Engineering,Hubei Normal University,Huangshi,435002,China)
关键词:
溶剂热法 Bi/Bi2O2CO3 SPR效应 可见光
Keywords:
solvothermal method Bi/Bi2O2CO3 SPR effect photocatalysis
分类号:
O614.41
文献标志码:
A
摘要:
通过调节五水硝酸铋的含量,采用溶剂热法制备 Bi/Bi2O2CO3复合物,利用SEM和XRD等表征对催化剂的 形貌和晶型进行了分析.以RhB(罗丹明 B,C28H31ClN2O3)为污染物模板,在可见光 下对Bi/Bi2O2CO3体系进行了降解,与纯的 Bi2O2CO3相比,沉积金属Bi后光催化降解RhB的效率高 达99%,降解速率达到0.1207 min-1,并且对BPA(双酚A,(CH3) 2C(C6H4OH)2)也有一定的降解效果.增强 的光催化活性可能归因于Bi的SPR(表面等离子体共振)效应使得 Bi2O2CO3被可见光激发,并且促进了光生载流子的分离 .BET测试结果表明,Bi/Bi2O2CO3的比表面积大于纯 Bi2O2CO3,这也可能是光催化性能增强的原因.此外,该 复合催化剂在经过5次循环实验后表现出较高的稳定性和重复利用性,自由基捕获实验的结果 证明,h+(空穴)为光催化反应中的主要活性物种,进而提出可能的光催化机理.
Abstract:
Bi/Bi2O2CO3 composites were prepared by solvothermal methodthrough adjusting the content of lanthanum nitrate pentahydrate.The morphology and crystal form of the catalysts were characterized by SEM and XRD.The Rh/Bi2O2CO3 system was degraded under photocatalysis with RhB as a pollutant template.Compared with pure Bi2O2CO3,the efficiency of photocatalytic degradation of RhB after deposition of metal Bi was as high as 99%,and the degradation rate reached 0.1207 min-1.The enhanced photocatalytic activity may be attributed to the SPR effect of Bi,which causes Bi2O2CO3 to be stimulated by photocatalysis and promotes the separation of photogenerated carriers.The BET test results show that the specific surface area of Bi/Bi2O2CO3 is larger than that of pure Bi2O2CO3,which may also be the reason for the enhancement of photocatalytic performance.In addition,the composite catalyst showed high stability and recyclability after five cycles of experiments.The results of free radical trapping experiments confirmed that h+ is the main active species in the photocatalytic reaction,and then a possible photocatalytic mechanism is proposed.

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备注/Memo

备注/Memo:
收稿日期:2019-06-06 基金项目:湖北省自然科学基金重点项目(2014CFA131) 作者简介:杨水金(1964-),男,教授,博士,硕士生导师,主要从事多酸化学与无机功能材料研 究.
更新日期/Last Update: 2019-09-15