文献类型：期刊文献

英文题名：Decoration engineering induced MoS2QDs/BiOBr heterostructures for significantly enhancing visible light photocatalytic capability for the organic dyes and antibiotics removal

作者：Zhang, Mingliang[1,2]; Duo, Fangfang[2]; Lan, Jihong[2]; Li, Lixiang[1]; Zhou, Jianwei[2]; Chu, Liangliang[2]; Wang, Chubei[2]

第一作者：张明亮;Zhang, Mingliang

机构：[1] University of Science and Technology Liaoning, School of Chemical Engineering, 185 Qianshanzhong Road, Anshan, Liaoning, 114051, China; [2] Xinxiang University, Henan Photoelectrocatalytic Material and Micro-nano Application Technology Academician Workstation, Xinxiang, Henan, 453003, China

第一机构：University of Science and Technology Liaoning, School of Chemical Engineering, 185 Qianshanzhong Road, Anshan, Liaoning, 114051, China

年份：2022

卷号：583

外文期刊名：Applied Surface Science

收录：EI(收录号：20220511568722);Scopus(收录号：2-s2.0-85123742395)

语种：英文

外文关键词：Layered semiconductors - Scanning electron microscopy - Semiconductor quantum dots - Absorption spectroscopy - Antibiotics - Bismuth compounds - Light - Mixing - Molybdenum compounds - Rhodium compounds - Spectrometers - Bromine compounds - Nanocrystals - Light absorption - X ray powder diffraction - Photoluminescence - High resolution transmission electron microscopy - Morphology - Optical properties - Photocatalytic activity - Semiconductor quantum wells - X ray photoelectron spectroscopy

摘要：A novel MoS2 quantum dots decorated BiOBr heterostructure photocatalyst has been successfully fabricated by a facile hydrolysis approach. The MoS2QDs are prepared through an ultrasound-exfoliation method by MoS2 nanosheet. The structure, morphology, elemental composition and optical absorption properties of materials have been detailedly investigated by X-ray powder diffraction (XRD), FT-IR spectrum, Raman spectrum, scanning electron microscopy, transmission electron microscopy (TEM), high-resolution TEM (HRTEM), energy dispersive spectrometer (EDS), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectroscopy (DRS) and photoluminescence spectra (PL), respectively. It can be observed that MoS2QDs with a diameter of about 5 nm are uniformly and firmly dispersed on the surface of the BiOBr. The MoS2QDs/BiOBr heterostructures show excellent photocatalytic activity both towards rhodamine B dyes and ciprofloxacin under visible light irradiation. It can be attributed to the synergistic effect of MoS2QDs/BiOBr heterostructures between MoS2QDs and BiOBr, which can promote the separation of photo-induced carriers and absorption of visible light. A heterojunction model based on the charges transfer mechanism has been proposed. Furthermore, the scavenger experiments and repeated experiments are conducted. The superior photocatalytic activity and excellent stability of MoS2QDs/BiOBr heterostructures can be a promising choice for practical application of water purification. ? 2022