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Visible-Light-Active Plasmonic Ag-SrTiO3 Nanocomposites for the Degradation of NO in Air with High Selectivity
Zhang, Qian1; Huang, Yu1,2; Xu, Lifeng1; Cao, Jun-ji1,2; Ho, Wingkei3; Lee, Shun Cheng4
2016-02-17
Source PublicationACS APPLIED MATERIALS & INTERFACES
Volume8Issue:6Pages:4165-4174
SubtypeArticle
AbstractHarnessing inexhaustible solar energy for photocatalytic disposal of nitrogen oxides is of great significance nowadays. In this study, Ag-SrTiO3 nanocomposites (Ag-STO) were synthesized via one-pot solvothermal method for the first time. The deposition of Ag nanoparticles incurs a broad plasmonic resonance absorption in the visible light range, resulting in enhanced visible light driven activity on NO removal in comparison with pristine SrTiO3. The Ag loading amount has a significant influence on light absorption properties of Ag-STO, which further affects the photocatalytic efficiency. It was shown that 0.5% Ag loading onto SrTiO3 (in mass ratio) could remove 30% of NO in a single reaction path under visible light irradiation, which is twice higher than that achieved on pristine SrTiO3. Most importantly, the generation of harmful intermediate (NO2) is largely inhibited over SrTiO3 and Ag-STO nanocomposites, which can be ascribed to the basic surface property of strontium sites. As identified by electron spin resonance (ESR) spectra, center dot O-2(-) and center dot OH radicals are the major reactive species for NO oxidation. Essentially speaking, the abundance of reactive oxygen radicals produced over Ag-STO nanocomposites are responsible for the improved photocatalytic activity. This work provides a facile and controllable route to fabricate plasmonic Ag-SrTiO3 nanocomposite photocatalyst featuring high visible light activity and selectivity for NO abatement.
KeywordAir Pollution Control Ag-srtio3 Nanocomposites Plasmonic Effect Photo Catalysis No Removal
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acsami.5b11887
WOS KeywordENHANCED PHOTOCATALYTIC ACTIVITY ; MODIFIED TIO2 PHOTOCATALYSTS ; RH-DOPED SRTIO3 ; SOLVOTHERMAL SYNTHESIS ; EFFICIENT DEGRADATION ; METAL NANOPARTICLES ; STRONTIUM-TITANATE ; ORGANIC POLLUTANT ; TITANIUM-DIOXIDE ; REMOVAL
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000370583100073
Citation statistics
Cited Times:54[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5828
Collection粉尘与环境研究室
Affiliation1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China
3.Hong Kong Inst Educ, Dept Sci & Environm Studies, Hong Kong, Hong Kong, Peoples R China
4.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Qian,Huang, Yu,Xu, Lifeng,et al. Visible-Light-Active Plasmonic Ag-SrTiO3 Nanocomposites for the Degradation of NO in Air with High Selectivity[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(6):4165-4174.
APA Zhang, Qian,Huang, Yu,Xu, Lifeng,Cao, Jun-ji,Ho, Wingkei,&Lee, Shun Cheng.(2016).Visible-Light-Active Plasmonic Ag-SrTiO3 Nanocomposites for the Degradation of NO in Air with High Selectivity.ACS APPLIED MATERIALS & INTERFACES,8(6),4165-4174.
MLA Zhang, Qian,et al."Visible-Light-Active Plasmonic Ag-SrTiO3 Nanocomposites for the Degradation of NO in Air with High Selectivity".ACS APPLIED MATERIALS & INTERFACES 8.6(2016):4165-4174.
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