首页|石墨相氮化碳的改性及其在光催化中的应用进展

石墨相氮化碳的改性及其在光催化中的应用进展

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石墨相氮化碳(graphitic carbon nitride,g-C3N4)因其独特的电子结构、可见光响应能力以及优异的化学稳定性,被认为是新一代最有发展前景的光催化材料之一.但原始的块体g-C3N4存在比表面积小、电子传导率低、可见光吸收能力有限、光生载流子复合速率快等缺点,极大地限制了它在光催化领域的大规模应用.为了提高g-C3N4的光催化性能并拓展其应用领域,科研人员进行了大量的研究工作并取得了重大进展.针对g-C3N4在光催化领域的研究现状,从分子结构调控、微观结构优化、助催化剂负载、半导体异质结和同质结的构建等方面概述了基于g-C3N4材料的改性方法,介绍了 g-C3N4基材料在光催化分解水产氢、污染物降解、CO2还原、有机合成4个领域的应用,论述了 g-C3N4基材料在光催化领域面临的机遇和挑战,并展望了其应用前景.
The Modification of Graphite Carbon Nitride and Its Applications in Photocatalysis
Graphitic carbon nitride(g-C3N4)is one of the most promising photocatalytic materials due to its unique elec-tronic structure,visible light response,and excellent chemical stability.Whereas,the practical applications of pristine g-C3N4 in photocatalysis are still facing with huge challenges,such as poor specific surface area,low electronic conductivi-ty,insufficient visible light absorption,and fast recombination of photoinduced charge carriers.Lots of research works have been carried out to improve the photocatalytic performance and extend the applications of g-C3N4,and many exciting progres-ses have been gained.In this work,we summarized the research status of g-C3N4 in the field of photocatalysis.The modified strategies based on g-C3N4 were discussed,including molecular structure engineering,morphology control,co-catalyst depo-sition,heterostructure and homostructure construction.Then,the multifunctional applications of g-C3N4 based materials in photocatalysis including H2 evolution,pollutant removal,CO2 reduction and organic synthesis were reviewed,and the oppor-tunities and challenges for the development of high-performance g-C3N4 based materials were prospected.

g-C3N4modified strategiesheterojunctionhomojunctionphotocatalytic applications

李俊、马丹丹、邹雅珺、石建稳

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西安交通大学电气工程学院 电工材料电气绝缘全国重点实验室 新型储能与能量转换纳米材料研究中心,陕西西安 710049

g-C3N4 改性方法 异质结 同质结 光催化应用

国家自然科学基金资助项目

21972110

2024

中国材料进展
中国材料研究学会 西北有色金属研究院

中国材料进展

CSTPCD北大核心
ISSN:1674-3962
年,卷(期):2024.43(7)
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