Facile synthesis of nitrogen-deficient mesoporous graphitic carbon nitride for highly efficient photocatalytic performance

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Facile synthesis of nitrogen-deficient mesoporous graphitic carbon nitride for highly efficient photocatalytic performance
	Zhang, Sai ; Hu, Chun ; Ji, Huanhuan ; Zhang, Lili ; Li, Fan
刊名	APPLIED SURFACE SCIENCE
	2019-06-01
卷号	478 页码:304-312
关键词	Visible-light photocatalysis Graphitic carbon nitride Mesoporous Nitrogen defects Electronic structure
ISSN号	0169-4332
英文摘要	A visible-light-driven photocatalyst nitrogen-deficient mesoporous graphitic carbon nitride (mpg-C3N4-delta) was prepared by a thermal polymerization-assisted colloidal crystal templating method. The unique mesoporous structure of mpg-C3N4-delta was confirmed to be formed with relatively uniform pores and cyano groups (-C N)-related nitrogen defects, which were generated from the break of the -C = N bonds of triazine rings and the subsequent loss of terminal NHx species during the pore-making process. Benefiting from the larger surface area, suitable energy level and increased unpaired electrons on C atoms of aromatic rings, the photocatalytic activity of mpg-C3N4-delta for RhB degradation was 11 and 2.6 times higher than that of bulk g-C3N4 and mpg-C3N4, respectively, under visible light irradiation (lambda >= 420 nm). Furthermore, nitrogen defects in mpg-C3N4-delta were verified to serve as electron/hole traps to boost the separation and transfer of photoexcited charge carriers and thus enhanced the production of main active species h(+) and O-2.(-), resulting in the efficient destruction of the intrinsic structure and functional groups of RhB molecules into small molecules. This work highlights that construction of uniform mesoporous architectures with surface nitrogen defects could be useful for developing highly efficient metal-free photocatalysts.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43461]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Drinking Water Sci & Technol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Guangzhou Univ, Key Lab Water Qual & Conservat Pearl River Delta, Inst Environm Res Greater Bay, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Sai,Hu, Chun,Ji, Huanhuan,et al. Facile synthesis of nitrogen-deficient mesoporous graphitic carbon nitride for highly efficient photocatalytic performance[J]. APPLIED SURFACE SCIENCE,2019,478:304-312.
APA	Zhang, Sai,Hu, Chun,Ji, Huanhuan,Zhang, Lili,&Li, Fan.(2019).Facile synthesis of nitrogen-deficient mesoporous graphitic carbon nitride for highly efficient photocatalytic performance.APPLIED SURFACE SCIENCE,478,304-312.
MLA	Zhang, Sai,et al."Facile synthesis of nitrogen-deficient mesoporous graphitic carbon nitride for highly efficient photocatalytic performance".APPLIED SURFACE SCIENCE 478(2019):304-312.