Defect Engineering in Two-Dimensional Graphitic Carbon Nitride and Application to Photocatalytic Air Purification

doi:10.3866/PKU.WHXB202011073

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Defect Engineering in Two-Dimensional Graphitic Carbon Nitride and Application to Photocatalytic Air Purification
	Wang, Wei 1,2; Huang, Yu 1; Wang, Zhenyu 1
刊名	ACTA PHYSICO-CHIMICA SINICA
	2021-08-15
卷号	37 期号:8 页码:13
关键词	Graphitic carbon nitride Defect engineering Photocatalysis Practical application
ISSN号	1000-6818
DOI	10.3866/PKU.WHXB202011073
通讯作者	Huang, Yu(huangyu@ieecas.cn)
英文摘要	Since the pioneering work on polychlorinated biphenyl photodegradation by Carey in 1976, photocatalytic technology has emerged as a promising and sustainable strategy to overcome the significant challenges posed by energy crisis and environmental pollution. In photocatalysis, sunlight, which is an inexhaustible source of energy, is utilized to generate strongly active species on the surface of the photocatalyst for triggering photo-redox reactions toward the successful removal of environmental pollutants, or for water splitting. The photocatalytic performance is related to the photoabsorption, photoinduced carrier separation, and redox ability of the semiconductor employed as the photocatalyst. Apart from traditional and noble metal oxide semiconductors such as P25, bismuth-based compounds, and Pt-based compounds, 2D g-C3N4 is now identified to have enormous potential in photocatalysis owing to the special pi-pi conjugated bond in its structure. However, some inherent drawbacks of the conventional g-C3N4, including the insufficient visible-light absorption ability, fast recombination of photogenerated electron-hole pairs, and low quantum efficiency, decrease its photocatalytic activity and limit its application. To date, various strategies such as heterojunction fabrication, special morphology design, and element doping have been adopted to tune the physicochemical properties of g-C3N4. Recent studies have highlighted the potential of defect engineering for boosting the light harvesting, charge separation, and adsorption efficiency of g-C3N4 by tailoring the local surface microstructure, electronic structure, and carrier concentration. In this review, we summarize cutting-edge achievements related to g-C3N4 modified with classified non-external-caused defects (carbon vacancies, nitrogen vacancies, etc.) and external-caused defects (doping and functionalization) for optimizing the photocatalytic performance in water splitting, removal of contaminants in the gas phase and wastewater, nitrogen fixation, etc. The distinctive roles of various defects in the g-C3N4 skeleton in the photocatalytic process are also summarized. Moreover, the practical application of 2D g-C3N4 in air pollution control is highlighted. Finally, the ongoing challenges and perspectives of defective g-C(3)N(4 )are presented. The overarching aim of this article is to provide a useful scaffold for future research and application studies on defect-modulated g-C3N4.
资助项目	National Key Research and Development Program of China[2016YFA0203000] ; National Nature Science Foundation of China[51878644] ; National Nature Science Foundation of China[41573138] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA23010300] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA23010000]
WOS关键词	SELF-SACRIFICIAL SYNTHESIS ; NITROGEN VACANCIES ; (G-C3N4)-BASED PHOTOCATALYSTS ; HYDROGEN EVOLUTION ; G-C3N4 NANOSHEETS ; CHARGE-TRANSFER ; N-VACANCIES ; DEGRADATION ; WATER ; CO2
WOS研究方向	Chemistry
语种	英语
出版者	PEKING UNIV PRESS
WOS记录号	WOS:000613263000016
资助机构	National Key Research and Development Program of China ; National Nature Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/16136]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Huang, Yu
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Wei,Huang, Yu,Wang, Zhenyu. Defect Engineering in Two-Dimensional Graphitic Carbon Nitride and Application to Photocatalytic Air Purification[J]. ACTA PHYSICO-CHIMICA SINICA,2021,37(8):13.
APA	Wang, Wei,Huang, Yu,&Wang, Zhenyu.(2021).Defect Engineering in Two-Dimensional Graphitic Carbon Nitride and Application to Photocatalytic Air Purification.ACTA PHYSICO-CHIMICA SINICA,37(8),13.
MLA	Wang, Wei,et al."Defect Engineering in Two-Dimensional Graphitic Carbon Nitride and Application to Photocatalytic Air Purification".ACTA PHYSICO-CHIMICA SINICA 37.8(2021):13.