Enhancement and stabilization of isolated hydroxyl groups via the construction of coordinatively unsaturated sites on surface and subsurface of hydrogenated TiO2 nanotube arrays for photocatalytic complete mineralization of toluene

doi:10.1016/j.jece.2021.105080

HFCAS OpenIR

	Enhancement and stabilization of isolated hydroxyl groups via the construction of coordinatively unsaturated sites on surface and subsurface of hydrogenated TiO2 nanotube arrays for photocatalytic complete mineralization of toluene
	Cheng, Qin 1; Wang, Azhu 1; Song, Zhimin 1; Bao, Jun 2; Xue, Jiawei 3; Wei, Yuxue 1; Li, Shikuo 1; Lv, Lingling 1; Ding, Jianjun 4; Cai, Mengdie 1; Chen, Jingshuai 1; Wang, Qi 5; Gao, Chen 2,6; Sun, Song 1,2
	2021-04-01
发表期刊	JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
通讯作者	Li, Shikuo(lishikuo@ahu.edu.cn) ; Sun, Song(suns@ustc.edu.cn)
摘要	Hydroxyl groups on the photocatalyst surface provide adsorption sites and starting species to form hydroxyl radicals, and are thus considered as the most important species for the photocatalytic degradation of toluene. However, the complete mineralization of toluene over TiO2 photocatalysts is still challenging because of insufficient and unstable hydroxyl groups. Here, a hydrogenated TiO2 nanotube array mesh (H-TiO2) was fabricated. H-TiO2 capable of trapping light and serving high surface areas for active sites exhibited a toluene mineralization conversion of 100%. It was found that surface distortion and oxygen vacancies ensured the chemical dissociative adsorption of water to generate sufficient isolated hydroxyls on the surface and subsurface and benefited the regeneration in long-term operations. This study may provide an efficient TiO2-based photo catalyst for the removal of volatile organic compounds for air purification and give comprehensive understandings of the photocatalyst surface modification and theoretical guidance for designing hydroxyl demanding photocatalysts.
关键词	Toluene In-situ DRIFTS Hydroxyl groups Mineralization Hydrogenated TiO2
DOI	10.1016/j.jece.2021.105080
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2016YFB0700205] ; National Natural Science Foundation of China[U1632273] ; National Natural Science Foundation of China[U1832165] ; National Natural Science Foundation of China[21902001] ; Foundation from Key Laboratory of Photovoltaic and Energy Conservation, CAS[PECL2018KF012] ; Anhui Provincial Natural Science Foundation[2008085QB85] ; Key Research and Development Program of Anhui Provincial[202004a05020015] ; Key Research and Development Program of Anhui Provincial[006233172019] ; Higher Education Natural Science Foundation of Anhui Province[K120433040]
项目资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Foundation from Key Laboratory of Photovoltaic and Energy Conservation, CAS ; Anhui Provincial Natural Science Foundation ; Key Research and Development Program of Anhui Provincial ; Higher Education Natural Science Foundation of Anhui Province
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000624489500002
出版者	ELSEVIER SCI LTD
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/121177
专题	中国科学院合肥物质科学研究院
通讯作者	Li, Shikuo; Sun, Song
作者单位	1.Anhui Univ, Sch Chem & Chem Engn, Hefei 230601, Anhui, Peoples R China 2.Univ Sci & Technol China, Collaborat Innovat Ctr Chem Energy Mat, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China 3.Osaka Univ, Inst Sci & Ind Res SANKEN, Mihogaoka 8-1, Osaka, Ibaraki 5670047, Japan 4.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Hefei 230031, Peoples R China 5.Chinese Acad Sci, Key Lab Photovolta & Energy Conversat Mat, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 6.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 101408, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Qin,Wang, Azhu,Song, Zhimin,et al. Enhancement and stabilization of isolated hydroxyl groups via the construction of coordinatively unsaturated sites on surface and subsurface of hydrogenated TiO2 nanotube arrays for photocatalytic complete mineralization of toluene[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2021,9.
APA	Cheng, Qin.,Wang, Azhu.,Song, Zhimin.,Bao, Jun.,Xue, Jiawei.,...&Sun, Song.(2021).Enhancement and stabilization of isolated hydroxyl groups via the construction of coordinatively unsaturated sites on surface and subsurface of hydrogenated TiO2 nanotube arrays for photocatalytic complete mineralization of toluene.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,9.
MLA	Cheng, Qin,et al."Enhancement and stabilization of isolated hydroxyl groups via the construction of coordinatively unsaturated sites on surface and subsurface of hydrogenated TiO2 nanotube arrays for photocatalytic complete mineralization of toluene".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 9(2021).