Highly effective interlayer expanded MoS2 coupled with Bi2WO6 as p-n heterojunction photocatalyst for photodegradation of organic dye under LED white light
Document Type
Article
Publication Date
8-1-2023
Abstract
The construction of a p-n heterojunction photocatalyst manage to conquer the setbacks of low photo-catalytic activity caused by rapid charge recombination and precarious photo-response range. Herein, an interlayer of expanded MoS2 coupled with Bi2WO6 (BW-IEM) photocatalyst was synthesized for removal of Methylene Blue (MB) up to 97% (5.18 x10-2 min-1) under irradiation of low power 1 W LED white light. The outstanding photocatalytic performance of the p-n heterojunctions BW-IEM photocatalyst is mainly at-tributed to the enhancement of light harvesting, improvement in the separation of charge carriers, and coexistence of oxygen vacancy. The main reactive oxygen species (ROS) responsible for the photo-degradation of MB were center dot Oz radicals and center dot OH. This work provides a new strategy for the potential IEM photocatalyst as a matrix in a p-n heterojunction composite.(c) 2023 Elsevier B.V. All rights reserved.
Keywords
Photocatalysis, MoS2, Bi2WO6, Visible light, Pollutants
Divisions
nanotechnology
Publication Title
Journal of Alloys and Compounds
Volume
953
Publisher
Elsevier
Publisher Location
PO BOX 564, 1001 LAUSANNE, SWITZERLAND