Generation and Release of OH Radicals from the Reaction of H2O with O-2 over Soot

doi:10.1002/anie.202201638

	Generation and Release of OH Radicals from the Reaction of H2O with O-2 over Soot
	He, Guangzhi 1; Ma, Jinzhu 1,2,3; Chu, Biwu 1,2,3; Hu, Renzhi 4; Li, Hao 1; Gao, Meng 1,3; Liu, Yuan 1,3; Wang, Yonghong 1; Ma, Qingxin 1,2,3; Xie, Pinhua 2,3,4
刊名	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
	2022-03-24
关键词	Carbonaceous Surface OH Radicals Soot Surface Hydroxyls
ISSN号	1433-7851
DOI	10.1002/anie.202201638
通讯作者	Zeng, Xiao Cheng(xzeng1@unl.edu) ; Francisco, Joseph S.(frjoseph@sas.upenn.edu) ; He, Hong(honghe@rcees.ac.cn)
英文摘要	OH radicals in the air maintain the oxidizing power of the troposphere. A conventional view is that particulate matter (PM) in the atmosphere is a major sink of OH radicals, thereby lowering the oxidizing power of atmosphere in the event of high-level PM. By contrary, our joint experimental/theoretical study reveals a new mechanism for the generation of gaseous OH radicals by carbonaceous soot particles. We show that water and O-2 react on carbonaceous surfaces and give rise to gaseous OH radicals under irradiation. With ample delocalized pi electrons, carbonaceous surfaces enable the easy desorption of hydroxyl groups to produce gaseous OH radicals, evidenced by direct observation of the steady generation of OH radicals on a carbonaceous surface. Our results reveal a new chemical mechanism for the production of OH radicals.
资助项目	National Natural Science Foundation of China[22188102] ; National Natural Science Foundation of China[21777171] ; National Natural Science Foundation of China[52022104] ; Youth Innovation Promotion Association, CAS[2019045] ; Youth Innovation Promotion Association, CAS[Y2021020] ; Youth Innovation Promotion Association, CAS[2018060] ; Cultivating Project of Strategic Priority Research Program of Chinese Academy of Sciences[XDPB19] ; National Key Research and Development Program of China[2017YFC0209401] ; Natural Science Foundation of Anhui Province[2008085J20]
WOS关键词	HETEROGENEOUS CHEMISTRY ; OPTICAL-PROPERTIES ; ORGANIC-CARBON ; AEROSOLS ; FRESH
WOS研究方向	Chemistry
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000772667900001
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Cultivating Project of Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program of China ; Natural Science Foundation of Anhui Province
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/128187]
专题	中国科学院合肥物质科学研究院
通讯作者	Zeng, Xiao Cheng; Francisco, Joseph S.; He, Hong
作者单位	1.Chinese Acad Sci, State Key Joint Lab Environm Simulat & Pollut Con, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, State Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 5.Univ Nebraska, Dept Chem, Lincoln, NE 68588 USA 6.Univ Penn, Dept Earth & Environm Sci, Philadelphia, PA 19104 USA 7.Univ Penn, Dept Chem, Philadelphia, PA 19104 USA
推荐引用方式 GB/T 7714	He, Guangzhi,Ma, Jinzhu,Chu, Biwu,et al. Generation and Release of OH Radicals from the Reaction of H2O with O-2 over Soot[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2022.
APA	He, Guangzhi.,Ma, Jinzhu.,Chu, Biwu.,Hu, Renzhi.,Li, Hao.,...&He, Hong.(2022).Generation and Release of OH Radicals from the Reaction of H2O with O-2 over Soot.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION.
MLA	He, Guangzhi,et al."Generation and Release of OH Radicals from the Reaction of H2O with O-2 over Soot".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022).