Photochemical production or depletion of hydrogen peroxide controlled by different electron transfer pathways in methyl viologen intercalated clays

doi:10.1016/j.jphotochem.2006.02.016

CORC > 化学研究所 > 中国科学院化学研究所

	Photochemical production or depletion of hydrogen peroxide controlled by different electron transfer pathways in methyl viologen intercalated clays
	Song, Wenjing; Ma, Jiahai; Ma, Wanhong; Chen, Chuncheng; Zhao, Jincai
刊名	JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
	2006-09-30
卷号	183 期号:1-2 页码:31-34
关键词	Hydrogen Peroxide Clay Minerals Methyl Viologen
ISSN号	1010-6030
DOI	10.1016/j.jphotochem.2006.02.016
英文摘要	The composites prepared by intercalating methyl viologen (MV2+) into clay lamella could lead to either production or depletion of hydrogen peroxide (H2O2) under UV light irradiation. H2O2 was found to be generated in aerated aqueous dispersion of Laponite intercalated with MV2+ (MV2+-Lap). In contrast, MV2+ intercalated Nontronite (MV2+-Non), promoted the decomposition of H2O2. In both cases, the intercalated MV2+ was excited upon UV irradiation and then captured an electron from clay hosts, through which methyl viologen cation radical (MV+center dot) was formed. In iron free Lap, MV+center dot reduced the dissolved oxygen to superoxide/hydroperoxie radicals (O-2(-center dot)/HO2 center dot) and H2O2 was produced via self-disproportionation. When iron species were present in clay host, however, MV+center dot reduced structural Fe(III) to Fe(II) in clay lattice, leading to the decomposition of H2O2. (c) 2006 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000240577000005
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/60223]
专题	中国科学院化学研究所
通讯作者	Zhao, Jincai
作者单位	Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Key Lab Photochem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Song, Wenjing,Ma, Jiahai,Ma, Wanhong,et al. Photochemical production or depletion of hydrogen peroxide controlled by different electron transfer pathways in methyl viologen intercalated clays[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,2006,183(1-2):31-34.
APA	Song, Wenjing,Ma, Jiahai,Ma, Wanhong,Chen, Chuncheng,&Zhao, Jincai.(2006).Photochemical production or depletion of hydrogen peroxide controlled by different electron transfer pathways in methyl viologen intercalated clays.JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,183(1-2),31-34.
MLA	Song, Wenjing,et al."Photochemical production or depletion of hydrogen peroxide controlled by different electron transfer pathways in methyl viologen intercalated clays".JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 183.1-2(2006):31-34.