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Plasmonic Bi/ZnWO4 Microspheres with Improved PhotocatalyticActivity on NO Removal under Visible Light
Gao,YX(Gao,Yunxia)[1]; Huang,Y(Huang,Yu)[1,2]; Li,Y(Li,Yan)[1]; Zhang,Q(Zhang,Qian)[1]; Cao,JJ(Cao,Junji)[1,2]; Ho,WK(Ho,Weigkei)[1,3]; Lee,SC(Lee,Shuncheng)[4]
2016-10-19
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume4Issue:12Pages:6912-6920
Subtype期刊论文
Abstract

In this work, bismuth (Bi) nanoparticle anchored ZnWO4 microspheres (Bi/ZnWO4) were prepared and used as robust and efficient photocatalysts for NO removal at parts-per-billion level under visible light irradiation. The as-synthesized composite with a proper mass ratio of Bi (50%) displayed a higher reaction rate (0.067 min–1) than its single counterparts ZnWO4 (0.004 min–1) and Bi (0.027 min–1), respectively. Due to the surface plasmon resonance (SPR) effect of Bi nanoparticles, the Bi/ZnWO4 composites showed broad light absorption in the visible spectrum. Moreover, the formation of the Bi/ZnWO4 heterointerface promoted the separation of photoexcited electron–hole pairs, which is demonstrated by the increased photocurrent density in comparison to the pristine materials. The above characteristics endowed the Bi/ZnWO4 composites with superior photocatalytic activity for NO removal. The radical scavanger tests revealed that the superoxide radical was the main active species to initiate NO oxidation, while the hydroxyl radical was not involved in the process. This study shows practical value in air pollutant abatement, because it provides an economical and feasible route to fabricate SPR-enhanced composite photocatalysts using earth abundant Bi material instead of noble metals.

DOI10.1021/acssuschemeng.6b01852
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5931
Collection粉尘与环境研究室
Affiliation1.Key Laboratory of Aerosol Chemistry & Physics, Institute of Earth Environment;
2.State Key Laboratory of Loess and QuaternaryGeology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China;
3.Department of Science and Environmental Studies, The Hong Kong Institute of Education, Hong Kong, China;
4.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
Recommended Citation
GB/T 7714
Gao,YX,Huang,Y,Li,Y,et al. Plasmonic Bi/ZnWO4 Microspheres with Improved PhotocatalyticActivity on NO Removal under Visible Light[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2016,4(12):6912-6920.
APA Gao,YX.,Huang,Y.,Li,Y.,Zhang,Q.,Cao,JJ.,...&Lee,SC.(2016).Plasmonic Bi/ZnWO4 Microspheres with Improved PhotocatalyticActivity on NO Removal under Visible Light.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,4(12),6912-6920.
MLA Gao,YX,et al."Plasmonic Bi/ZnWO4 Microspheres with Improved PhotocatalyticActivity on NO Removal under Visible Light".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 4.12(2016):6912-6920.
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