Enhancement of photocatalytic hydrogen evolution activity of g-C3N4 induced by structural distortion via post-fluorination treatment

doi:10.1016/j.apcatb.2018.01.040

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 微纳制造与系统集成研究中心

	Enhancement of photocatalytic hydrogen evolution activity of g-C3N4 induced by structural distortion via post-fluorination treatment
	Zeng, Lei 1,2; Ding, Xue 1; Sun, Zongzhao 1; Hua, Weiming 2; Song, Wulin 3,4; Liu, Shuangyi1,5 ; Huang, Limin 1
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2018-07-05
卷号	227 页码:276-284
关键词	g-C3N4 Fluorination Structural distortion Photocatalytic H-2 evolution
ISSN号	0926-3373
DOI	10.1016/j.apcatb.2018.01.040
英文摘要	Graphic carbon nitride (g-C3N4) has recently attracted a great deal of attention for its application in solar energy conversion. The photocatalytic activities, however, suffer from fast electron-hole recombination and insufficient solar absorption of g-C3N4. Here, a modified g-C3N4 (CNF) photocatalyst, which was prepared by a simple hydrothermal treatment with dilute hydrofluoric acid (0.1 M HF), has achieved a 2.4-fold enhanced photo catalytic activity for hydrogen production under visible light irradiation compared to pristine g-C3N4. It is demonstrated that a structural distortion is introduced in the CNF sheets without the formation of C-F bonds after the hydrothermal treatment, which can effectively separate photogenerated electron-hole pairs. Interestingly, the g-C3N4 treated by oil bath reflux reaction with dilute hydrofluoric acid (CNFO) under the same reaction condition (concentration, temperature and duration) has no sign of structural distortion, and shows a decline in the photocatalytic H-2 evolution activity. This may be attributed to the enhanced localization mobility of pi electrons induced by the formation of C-F bonds after the oil bath treatment. These findings provide a better understanding on the effect of different fluorination treatments on the surface states and photocatalytic activities of g-C3N4-based materials. Additionally, this work presents a promising strategy to improve the photocatalytic H-2 evolution activity of g-C3N4 or related polymer semiconductors via microstructure engineering.
资助项目	Southern University of Science and Technology of China (SUSTC) start fund through Shenzhen Peacock Talent program ; basic research fund of Shenzhen[JCYJ20150507170334573] ; technical research fund of Shenzhen[JSGG20160427105120572] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06N532] ; Chinese Postdoctoral Science Foundation[2017M611446] ; National Natural Science Foundation of China[21703097]
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000428491000029
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/6286]
专题	微纳制造与系统集成研究中心
通讯作者	Huang, Limin
作者单位	1.Southern Univ Sci & Technol China, Dept Chem, Shenzhen 518055, Peoples R China 2.Fudan Univ, Dept Chem, Shanghai, Peoples R China 3.Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan, Hubei, Peoples R China 4.Huazhong Univ Sci & Technol, Anal & Testing Ctr, Wuhan, Hubei, Peoples R China 5.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Lei,Ding, Xue,Sun, Zongzhao,et al. Enhancement of photocatalytic hydrogen evolution activity of g-C3N4 induced by structural distortion via post-fluorination treatment[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,227:276-284.
APA	Zeng, Lei.,Ding, Xue.,Sun, Zongzhao.,Hua, Weiming.,Song, Wulin.,...&Huang, Limin.(2018).Enhancement of photocatalytic hydrogen evolution activity of g-C3N4 induced by structural distortion via post-fluorination treatment.APPLIED CATALYSIS B-ENVIRONMENTAL,227,276-284.
MLA	Zeng, Lei,et al."Enhancement of photocatalytic hydrogen evolution activity of g-C3N4 induced by structural distortion via post-fluorination treatment".APPLIED CATALYSIS B-ENVIRONMENTAL 227(2018):276-284.