期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 767, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2020.144896
关键词
Heterostructured nanocomposite; g-C3N4, TiO(2 )and ZnO; Photocatalytic degradation; Dyes
资金
- DST, New Delhi [DST/TM/WTI/WIC/2K17/124]
The review discusses the issue of water contamination by dyes and explores the potential solution using semiconductor-assisted materials and renewable solar energy. By developing semiconductor composite and heterojunction systems, the efficiency and stability of photocatalysts have been enhanced.
Water contamination by dyes is a matter of concern for human health and the environment. Various methods (membrane separation, coagulation and adsorption) have been explored to remove/degrade dyes. However, now the exploitation of semiconductor assisted materials using renewable solar energy has emerged as a potential candidate to resolve the issue. Although, single component photocatalysts (ZnO, TiO2, ZrO2) were experimented, due to their low efficiency and stability due to the high recombination rate electron-hole pair and inefficient visible light absorption, composites of semiconductor materials are being used. Semiconductor heterojunction systems are developed by coupling two or more semiconductor components. The synergistic effect of their properties, such as adsorption and improved charge carrier migration, is observed to increase overall stability. This review covers recent progress in advanced nanocomposite materials based on g-C3N4, TiO2 and ZnO used as photocatalysts with details of enhancing the photocatalytic properties by heterojunctions, crystallinity and doping. The conclusion at the end displays a summary, research gaps and future outlook. A holistic analysis of recent progress to demonstrate the efficient heterojunctions for photodegradation with optimal conditions, this review will be helpful for the development of efficient heterostructured systems for photodegradation. This review covers references from the year 2017-2020. (C) 2021 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据