光催化
激进的
罗丹明B
电子顺磁共振
热液循环
材料科学
纳米颗粒
光化学
降级(电信)
兴奋剂
化学工程
化学
纳米技术
催化作用
有机化学
工程类
物理
电信
光电子学
核磁共振
计算机科学
作者
Hongda Li,Wenjun Li,Fangzhi Wang,Xintong Liu,Chaojun Ren,Xiao Miao
标识
DOI:10.1016/j.apsusc.2017.09.106
摘要
A new Pt nanoparticles decorated Gd-doped Bi2MoO6 photocatalyst was synthesized by the hydrothermal process and in-situ reduction method. The crystal structure, morphology, chemical state and optical property of the obtained photocatalysts were investigated. The activities of photocatalysts were also evaluated by the degradation of Rhodamine B, Tetracyclines and 4-Chlorophenol under visible light irradiation, and the results indicated that the Gd/Pt co-modified Bi2MoO6 sample shows better photocatalytic activity. Meanwhile, the results of trapping experiments and Electron Spin Resonance (ESR) spectra demonstrated that the OH radicals can be formed by doping of Gd3+ ions, and the addition of Pt was conducive to the producing of more •O2− and OH radicals. Also the results from the degradation of 4-chlorophenol implied that the formed OH radicals in the system of Gd/Pt-BMO possess stronger oxidizability than•O2− radicals for degrading the special organics which are difficult to be mineralized. Additionally, the mechanism about the excellent photocatalytic activity of Gd/Pt co-modified Bi2MoO6 was also discussed.
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