A review on Bi2WO6-based photocatalysts synthesis, modification, and applications in environmental remediation, life medical, and clean energy

IF 6.1 2区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL
Wei Mao, Xuewu Shen, Lixun Zhang, Yang Liu, Zehao Liu, Yuntao Guan
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Abstract

Photocatalysis has emerged a promising strategy to remedy the current energy and environmental crisis due to its ability to directly convert clean solar energy into chemical energy. Bismuth tungstate (Bi2WO6) has been shown to be an excellent visible light response, a well-defined perovskite crystal structure, and an abundance of oxygen atoms (providing efficient channels for photogenerated carrier transfer) due to their suitable band gap, effective electron migration and separation, making them ideal photocatalysts. It has been extensively applied as photocatalyst in aspects including pollutant removal, carbon dioxide reduction, solar hydrogen production, ammonia synthesis by nitrogen photocatalytic reduction, and cancer therapy. In this review, the fabrication and application of Bi2WO6 in photocatalysis were comprehensively discussed. The photocatalytic properties of Bi2WO6-based materials were significantly enhanced by carbon modification, the construction of heterojunctions, and the atom doping to improve the photogenerated carrier migration rate, the number of surface active sites, and the photoexcitation ability of the composites. In addition, the potential development directions and the existing challenges to improve the photocatalytic performance of Bi2WO6-based materials were discussed.

Abstract Image

综述基于 Bi2WO6 的光催化剂的合成、改性及在环境修复、生命医疗和清洁能源中的应用
光催化技术能够将清洁的太阳能直接转化为化学能,因此已成为解决当前能源和环境危机的一项前景广阔的战略。钨酸铋(Bi2WO6)具有良好的可见光响应、清晰的过氧化物晶体结构以及丰富的氧原子(为光生载流子传输提供了有效通道),这些都使其成为理想的光催化剂。它作为光催化剂已被广泛应用于污染物去除、二氧化碳还原、太阳能制氢、氮光催化还原合成氨以及癌症治疗等方面。本综述全面讨论了 Bi2WO6 的制备和在光催化中的应用。通过碳改性、异质结的构建和原子掺杂,提高了光生载流子迁移率、表面活性位点数量和复合材料的光激发能力,从而显著增强了基于Bi2WO6材料的光催化性能。此外,还讨论了提高 Bi2WO6 基材料光催化性能的潜在发展方向和现有挑战。
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来源期刊
Frontiers of Environmental Science & Engineering
Frontiers of Environmental Science & Engineering ENGINEERING, ENVIRONMENTAL-ENVIRONMENTAL SCIENCES
CiteScore
10.90
自引率
12.50%
发文量
988
审稿时长
6.1 months
期刊介绍: Frontiers of Environmental Science & Engineering (FESE) is an international journal for researchers interested in a wide range of environmental disciplines. The journal''s aim is to advance and disseminate knowledge in all main branches of environmental science & engineering. The journal emphasizes papers in developing fields, as well as papers showing the interaction between environmental disciplines and other disciplines. FESE is a bi-monthly journal. Its peer-reviewed contents consist of a broad blend of reviews, research papers, policy analyses, short communications, and opinions. Nonscheduled “special issue” and "hot topic", including a review article followed by a couple of related research articles, are organized to publish novel contributions and breaking results on all aspects of environmental field.
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