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

Publication Title

Journal of Alloys and Compounds

Divisions

nanotechnology

Volume

953

Publisher

Elsevier

Publisher Location

PO BOX 564, 1001 LAUSANNE, SWITZERLAND

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