New insights into the synergistic effect of active radicals and adsorptive ability on the photodegradation of gaseous acetaldehyde over reduced graphene Oxide/P25 composite

doi:10.1016/j.jhazmat.2019.120814

SIC OpenIR

	New insights into the synergistic effect of active radicals and adsorptive ability on the photodegradation of gaseous acetaldehyde over reduced graphene Oxide/P25 composite
	Zeng, Qinglong; Xie, Xiaofeng; Wang, Xiao; Lu, Guanhong; Li, Haiwei; Lee, Shun Cheng; Sun, Jing
	2019-12-15
Source Publication	JOURNAL OF HAZARDOUS MATERIALS
ISSN	0304-3894
Volume	380
Subtype	Article
Abstract	Although coupling reduced graphene oxide (RGO) with TiO2 is believed to enhance the photocatalysis through the light utilization, studies on its photothermal conversion effect are rarely reported. Herein, RGOP (reduced graphene oxide/P25) was synthesized to explore roles of the enhanced light adsorption and photothermal conversion in the photocatalytic process. It was found that although RGOP had increased absorbance, it actually possessed lower available light utilization compared with P25. In the synergistic effect of available light utilization, transfer resistance and hydrophilicity, RGOP exhibited less superoxide radicals but more hydroxyl radicals. In the presence of scavenger experiments, center dot O-2(-) was proved to play the predominant role in the photo-catalytic process, while center dot OH was the secondary one. In comparison to P25, the change of active radicals of RGOP was adverse to its photocatalysis. However, due to the superior adsorptive property of RGOP, it exhibited higher photocatalytic activity than P25. The improved photocatalytic activity of RGOP was ascribed to its superior adsorptive ability aside from active radicals (O-center dot(2)-, (OH)-O-center dot).
Keyword	Photothermal conversion Active radicals Adsorptive ability Gaseous acetaldehyde
DOI	10.1016/j.jhazmat.2019.120814
Language	英语
WOS Research Area	Engineering ; Environmental Sciences & Ecology
Publisher	ELSEVIER
Citation statistics	Cited Times:11[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/26696
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Zeng, Qinglong,Xie, Xiaofeng,Wang, Xiao,et al. New insights into the synergistic effect of active radicals and adsorptive ability on the photodegradation of gaseous acetaldehyde over reduced graphene Oxide/P25 composite[J]. JOURNAL OF HAZARDOUS MATERIALS,2019,380.
APA	Zeng, Qinglong.,Xie, Xiaofeng.,Wang, Xiao.,Lu, Guanhong.,Li, Haiwei.,...&Sun, Jing.(2019).New insights into the synergistic effect of active radicals and adsorptive ability on the photodegradation of gaseous acetaldehyde over reduced graphene Oxide/P25 composite.JOURNAL OF HAZARDOUS MATERIALS,380.
MLA	Zeng, Qinglong,et al."New insights into the synergistic effect of active radicals and adsorptive ability on the photodegradation of gaseous acetaldehyde over reduced graphene Oxide/P25 composite".JOURNAL OF HAZARDOUS MATERIALS 380(2019).

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