光催化
掺杂剂
单斜晶系
X射线光电子能谱
结晶紫
兴奋剂
材料科学
降级(电信)
热液循环
Crystal(编程语言)
无机化学
晶体结构
化学工程
光化学
化学
催化作用
结晶学
有机化学
光电子学
电信
程序设计语言
病理
计算机科学
工程类
医学
作者
Nivedita Singh,Uttam Kumar,Neha Jatav,Indrajit Sinha
出处
期刊:Langmuir
[American Chemical Society]
日期:2024-04-10
标识
DOI:10.1021/acs.langmuir.3c04039
摘要
Fabrication of codoped photocatalysts is a developing area of research. Herein, we explore the visible light photocatalytic properties of Cu, Zn codoped BiVO4 particles. Doping lower valent cations (Cu and Zn) makes the BiVO4 surface more acidic and enables us to target the basic crystal violet (CV) dye. The adopted hydrothermal protocol of synthesis results in the formation of Cu–Zn codoped monoclinic BiVO4 particles. Undoped monoclinic BiVO4, prepared by the same protocol, showed significant formation of oxygen vacancies. XPS analyses confirm the coexistence of Cu2+/Cu+ and Zn2+ dopants. Increased dopant percentage reduced oxygen vacancies. XRD indicates that Cu2+/Cu+ or Zn2+ dopants generally substitute Bi3+ in BiVO4. All photocatalysis activities for CV degradation are reported under near-neutral pH conditions. A typical codoped BiVO4 photocatalyst with 1% Zn and 2% Cu demonstrated the best CV degradation photocatalytic activity. The activity of this Zn, Cu codoped photocatalyst is better than that of pure, Zn-doped, and Cu-doped BiVO4 samples. Active species trapping experiments indicated the possible photocatalysis mechanism. The photocatalysts exhibited appropriate recyclability and photostability.
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