Highly effective interlayer expanded MoS2 coupled with Bi2WO6 as p-n heterojunction photocatalyst for photodegradation of organic dye under LED white light

被引：23

作者：

Lai, Magdeline Tze Leng ^{[1
]}

Lee, Kian Mun ^{[1
]}

Yang, Thomas Chung Kuang ^{[2
]}

Lai, Chin Wei ^{[1
]}

Chen, Chia-Yun ^{[3
,4
]}

Johan, Mohd Rafie ^{[1
]}

Juan, Joon Ching ^{[1
,5
]}

机构：

[1] Univ Malaya, Inst Adv Studies, Nanotechnol & Catalysis Res Ctr, Kuala Lumpur 50603, Malaysia

[2] Natl Taipei Univ Technol, Dept Chem Engn & Biotechnol, Taipei, Taiwan

[3] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan

[4] Natl Cheng Kung Univ, Hierarch Green Energy Mat Hi GEM Res Ctr, Tainan 70101, Taiwan

[5] UCSI Univ, Fac Engn Technol & Built Environm, Kuala Lumpur 56000, Malaysia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 953卷

关键词：

Photocatalysis; MoS2; Bi2WO6; Visible light; Pollutants; METALLIC PHASE-TRANSITION; VISIBLE-LIGHT; OXYGEN VACANCIES; MOS2/BI2WO6; HETEROJUNCTION; ULTRATHIN NANOSHEETS; H-2; EVOLUTION; DEGRADATION; MECHANISM; HETEROSTRUCTURES; CONSTRUCTION;

D O I：

10.1016/j.jallcom.2023.169834

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页数：12

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