Highly luminescent S, N co-doped graphene quantum dots with broad visible absorption bands for visible light photocatalysts

	Highly luminescent S, N co-doped graphene quantum dots with broad visible absorption bands for visible light photocatalysts
	Qu D.; Zheng M.; Du P.; Zhou Y.; Zhang L.; Li D.; Tan H.; Zhao Z.; Xie Z.; Sun Z.
	2013
发表期刊	Nanoscale
ISSN	ISBN/20403364
卷号	5 期号:24
摘要	A facile hydrothermal synthesis route to N and S, N co-doped graphene quantum dots (GQDs) was developed by using citric acid as the C source and urea or thiourea as N and S sources. Both N and S, N doped GQDs showed high quantum yield (78% and 71%), excitation independent under excitation of 340-400 nm and single exponential decay under UV excitation. A broad absorption band in the visible region appeared in S, N co-doped GQDs due to doping with sulfur, which alters the surface state of GQDs. However, S, N co-doped GQDs show different color emission under excitation of 420-520 nm due to their absorption in the visible region. The excellent photocatalytic performance of the S, N co-doped GQD/TiO2 composites was demonstrated by degradation of rhodamine B under visible light. The apparent rate of S, N:GQD/TiO2 is 3 and 10 times higher than that of N:GQD/TiO2 and P25 TiO2 under visible light irradiation, respectively. 2013 The Royal Society of Chemistry.
收录类别	SCI ; EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/40690
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Qu D.,Zheng M.,Du P.,et al. Highly luminescent S, N co-doped graphene quantum dots with broad visible absorption bands for visible light photocatalysts[J]. Nanoscale,2013,5(24).
APA	Qu D..,Zheng M..,Du P..,Zhou Y..,Zhang L..,...&Sun Z..(2013).Highly luminescent S, N co-doped graphene quantum dots with broad visible absorption bands for visible light photocatalysts.Nanoscale,5(24).
MLA	Qu D.,et al."Highly luminescent S, N co-doped graphene quantum dots with broad visible absorption bands for visible light photocatalysts".Nanoscale 5.24(2013).

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