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Insight into the Photocatalytic Removal of NO in Air over Nanocrystalline Bi2Sn2O7 under Simulated Solar Light
Lu, Yanfeng1,3; Huang, Yu1,2; Cao, Jun-ji1,2; Ho, Wingkei1,4; Zhang, Qian1; Zhu, Dandan1; Lee, Shun Cheng5
2016-10-12
发表期刊INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷号55期号:40页码:10609-10617
文章类型Article
摘要Understanding the photocatalytic conversion mechanism of NO is crucial to develop an effective and practical strategy for indoor air pollution control. In this study, we systematically investigated the photocatalytic removal mechanism of NO over nanocrystalline Bi2Sn2O7, which was successfully synthesized via hydrothermal method using bismuth citrate and stannic chloride pentahydrate as precursors for the first time. Various characterizations were carried out to study the physicochemical properties of the as-prepared samples. The performance of the as-prepared Bi2Sn2O7 samples was evaluated by the photocatalytic degradation of NO in a continuous reactor under simulated solar light irradiation. The NO removal rate over the Bi2Sn2O7 sample synthesized for 12 h (BSO-12) was 37%, which was much higher than those of Bi2Sn2O7 samples synthesized for 24 h (BSO-24) and 36 h (BSO-36). Results from photocurrent tests and electrochemical impedance spectroscopy (EIS) demonstrated that the BSO-12 sample presents much more effective interface charge separation efficiency, which can contribute to its improved photocatalytic performance. Reactive radicals during the photocatalysis processes were identified via trapping experiments, which were also confirmed by electron spin resonance (ESR) study. Combined with the quantification of reaction intermediates, the photocatalytic removal mechanism of NO over nanocrystalline Bi2Sn2O7 was proposed for the first time.
WOS标题词Science & Technology ; Technology
DOI10.1021/acs.iecr.6b02514
关键词[WOS]VISIBLE-LIGHT ; PHOTOPHYSICAL PROPERTIES ; TITANIUM-DIOXIDE ; PARTICLE-SIZE ; INDOOR AIR ; TIO2 ; MICROSPHERES ; SEMICONDUCTOR ; DEGRADATION ; IRRADIATION
收录类别SCI
语种英语
WOS研究方向Engineering
WOS类目Engineering, Chemical
WOS记录号WOS:000385470000011
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5653
专题粉尘与环境研究室
作者单位1.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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Hong Kong Inst Educ, Dept Sci & Environm Studies, Hong Kong, Hong Kong, Peoples R China
5.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China
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Lu, Yanfeng,Huang, Yu,Cao, Jun-ji,et al. Insight into the Photocatalytic Removal of NO in Air over Nanocrystalline Bi2Sn2O7 under Simulated Solar Light[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2016,55(40):10609-10617.
APA Lu, Yanfeng.,Huang, Yu.,Cao, Jun-ji.,Ho, Wingkei.,Zhang, Qian.,...&Lee, Shun Cheng.(2016).Insight into the Photocatalytic Removal of NO in Air over Nanocrystalline Bi2Sn2O7 under Simulated Solar Light.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,55(40),10609-10617.
MLA Lu, Yanfeng,et al."Insight into the Photocatalytic Removal of NO in Air over Nanocrystalline Bi2Sn2O7 under Simulated Solar Light".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 55.40(2016):10609-10617.
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