您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Interfacial modification of BiVO4 photocatalyst: Construction of heterojunction with AgI

文献类型： 外文期刊

作者： Zhong, Yuanyuan 1 ; Chen, Shengli 1 ; Xiao, Tian 1 ; Zhu, Xiaodong 1 ; Feng, Wei 1 ; Qi, Zhiyong 3 ;

作者机构： 1.Chengdu Univ, Sch Mech Engn, Chengdu 610106, Peoples R China

2.Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643002, Peoples R China

3.Chinese Acad Agr Sci, Inst Urban Agr, Chengdu 610213, Peoples R China

关键词： BiVO 4; AgI; Photocatalytic performance; Z -scheme heterojunction

期刊名称：JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS （ 影响因子：4.9； 五年影响因子：4.4 ）

ISSN： 0022-3697

年卷期： 2025 年 202 卷

页码：

收录情况： SCI

摘要： To resolve BiVO4's overly negative valence band potential inhibiting hydroxyl radical generation, AgI/BiVO4 photocatalyst composites were synthesized via a precipitation method. The photocatalytic performance and photogenerated charge transfer mechanism were studied. When the molar ratio of Ag to Bi was 0.5, the photocatalytic performance peaked, achieving an 83.0 % degradation degree of methylene blue solution after 60 min of light irradiation. The first-order reaction rate constant (k) was 0.0256 min-1, which was 15.0 times and 2.3 times higher than that of pure AgI and pure BiVO4, respectively. BiVO4 and AgI coupling formed a Z-scheme heterojunction, transferring photogenerated electrons from the conduction band of AgI to valence band of BiVO4 while retaining highly oxidative holes on AgI and highly reductive electrons on BiVO4, which is beneficial to the photocatalytic performance. Reactive species trapping experiments identified hydroxyl radicals as the dominant active species. This charge transfer mechanism facilitated charge separation, promoted the formation of hydroxyl radicals, and enhanced photocatalytic activity.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台