同质结
材料科学
异质结
光电流
三元运算
光催化
甲基橙
光电子学
量子点
载流子
化学工程
纳米技术
化学
催化作用
工程类
程序设计语言
生物化学
计算机科学
作者
Aneek Kuila,Pichiah Saravanan,Detlef W. Bahnemann,Chuanyi Wang
标识
DOI:10.1016/j.apcatb.2021.120224
摘要
A ternary composite [email protected]3/BiOCl possessing homojunction-heterojunction interface with varied BiOCl concentration was obtained through a facile hydrothermal route. Ag deposition in [email protected]3 nano-belt was achieved through in-situ generation and deposition of Ag forming a homojunction. Whereas [email protected]3/BiOCl heterojunction was constructed through the surface doping. This unique two-way interaction and the interface formation were revealed through the electron microscope and crystallographic analysis. The localized surface plasmon resonance of Ag and the efficient orbital mixing with BiOCl of 1:1 B/[email protected] compound has imparted a remarkable light harvesting and photo switching ability in the ternary composite material. Conductive nature of the Ag nanoparticle has promoted light absorption in the visible region and reduced the charge transfer resistance. Reduction of width in space charge region along with the increase in the amount of surface charge carrier has resulted in an outstanding increment in photocurrent. The solar photocatalysis evaluated against the aqueous phase removal of methyl orange and Bisphenol A showed 100 % and 51 % removal in 50 and 240 min, respectively. Studies were extended to understand the sensitization effect of dye. Theoretical modelling of band structure drawn from charge trapping experiments showed the prevalence of Z-scheme mechanism with holes mediated catalytic degradation. Improved charge harvest, separation and transmission has inserted a higher quantum efficiency in the material. BPA removal was enhanced to 82 % after the peroxide activation.
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