>> In-situ preparation of NH 2 -MIL-125(Ti)/BiOCl composite with accelerating charge carriers for boosting visible light photocatalytic activity
题名：In-situ preparation of NH 2 -MIL-125(Ti)/BiOCl composite with accelerating charge carriers for boosting visible light photocatalytic activity
来源：Applied Surface Science
发表年代：2019年
作者：Qingsong Hu, Jun Di, Bin Wang, Mengxia Ji, Yong Chen, Jiexiang Xia*, Huaming Li, aping Zhao*
Abstract Metal-organic frameworks (MOFs), a new class of porous and crystalline materials, which have drawn increasing ttention in diverse areas. The development of highly active MOFs-based photocatalysts have become a research otspot owing to the tunable semiconducting properties and highly porous nanostructure. The unique roles of hotocatalysis by MOFs can be conventionally optimized towards addressing the environment and energy issues. n this paper, NH2-MIL-125(Ti)/BiOCl composite was studied as a novel visible-light responsive photocatalyst for he removal of organic contaminants. The composite displays signifcantly enhanced photocatalytic activity for ontaminant degradation as compared with BiOCl and NH2-MIL-125(Ti), and the optimal NH2-MIL-125(Ti) ontent is 10 wt%. The remarkable enhancement of the photocatalytic performance can be ascribed to the absorption of visible-light as well as the efcient charge separation and transfer on the interface contact between iOCl and NH2-MIL-125(Ti). Superoxide radicals and holes were determined to be the main active species in the hotocatalytic process via the reactive species trapping experiments and electron spin resonance, and the lausible photocatalytic mechanism is presented. This work aims to provide guidelines for developing more rganic-inorganic hybrid materials for environmental remediation.
