Visible-light-driven deep oxidation of NO over Fe doped TiO2 catalyst: Synergic effect of Fe and oxygen vacancies - Details

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Abstract：

A　Fe　doped　TiO2　catalyst　(Fe-TiO2)　was　evaluated　for　NO　oxidation　reaction　under　visible　light　irradiation.　The　Fe-TiO2　not　only　exhibited　better　catalytic　activity　and　stability,　but　also　suppressed　the　production　of　nitrogen　dioxide　(NO2)　than　the　undoped　TiO2.　The　results　of　in　situ　DRIFTS　indicated　that　visible　light　benefited　the　adsorption　and　activation　of　NO　at　Fe　sites　(Fe-(NO)(2))　and　Ti　sites　(Ti-3-NO)　as　well　as　the　formation　of　active　intermediates　(e.g.　Fe3+-NO3-　and　Ti4+-NO-).　After　EPR,　DRS,　PL　and　XPS　testing,　it　was　proposed　that　incorporating　Fe　ions　into　TiO2　induced　the　formation　of　more　oxygen　vacancies　(OVs),　while　visible　light　further　facilitated　this　process,　resulting　in　an　enhanced　adsorption　&　activation　of　NO　and　also　a　promoted　formation　of　reactive　oxygen　species　(ROS).　Thus,　a　strengthened　photo-driven　effect　for　oxidizing　NO　into　NO2-　and　NO3-　occurred　on　Fe-TiO2.

Keyword：

Fe-TiO2 NO oxidation O-2 activation Oxygen vacancies Photo behavior

Community：

[ 1 ] [Cheng, Gang]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
[ 2 ] [Liu, Xin]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
[ 3 ] [Song, Xinjie]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
[ 4 ] [Chen, Xun]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
[ 5 ] [Dai, Wenxin]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
[ 6 ] [Yuan, Rusheng]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
[ 7 ] [Fu, Xianzhi]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
[ 8 ] [Cheng, Gang]Fujian Prov Univ, Fuzhou Univ, Key Lab Ecomat Adv Technol, Fuzhou 350002, Peoples R China
[ 9 ] [Liu, Xin]Fujian Prov Univ, Fuzhou Univ, Key Lab Ecomat Adv Technol, Fuzhou 350002, Peoples R China
[ 10 ] [Song, Xinjie]Fujian Prov Univ, Fuzhou Univ, Key Lab Ecomat Adv Technol, Fuzhou 350002, Peoples R China
[ 11 ] [Dai, Wenxin]Fujian Prov Univ, Fuzhou Univ, Key Lab Ecomat Adv Technol, Fuzhou 350002, Peoples R China
[ 12 ] [Yuan, Rusheng]Fujian Prov Univ, Fuzhou Univ, Key Lab Ecomat Adv Technol, Fuzhou 350002, Peoples R China

Reprint 's Address：

戴文新员汝胜
[Dai, Wenxin]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;;[Yuan, Rusheng]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China

Email：

daiwenxin@fzu.edu.cn |
yuanrs@fzu.edu.cn

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