Synthesis and characterization of Bi-BiPO4 nanocomposites as plasmonic photocatalysts for oxidative NO removal

doi:10.1016/j.apsusc.2020.145775

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Synthesis and characterization of Bi-BiPO4 nanocomposites as plasmonic photocatalysts for oxidative NO removal
	Chen, Meijuan 2,3,5; Li, Xinwei 1,3; Huang, Yu 3; Yao, Jie 3; Li, Yan 3; Lee, Shun-cheng 1; Ho, Wingkei 4; Huang, Tingting 3; Chen, Kehao 5
刊名	APPLIED SURFACE SCIENCE
	2020-05-30
卷号	513 页码:8
关键词	Plasmonic photocatalysis NO removal Bi metal O-2 and NO activation
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2020.145775
通讯作者	Chen, Meijuan(chenmeijuan@xjtu.edu.cn) ; Huang, Yu(huangyu@ieecas.cn)
英文摘要	Bi metal-BiPO4(Bi-BPO) nanocomposites formed by in situ solvothermal reduction were employed as plasmonic photocatalysts for oxidative NO removal, achieving a removal efficiency of 32.8% in a continuous NO flow (400 ppb) under illumination with visible light. This high performance was ascribed to the generation of energetic hot electrons (and their subsequent surface chemical reactions) due to the surface plasmon resonance (SPR) of Bi metal, as validated by numerical simulations. The combined results of density functional theory (DFT) calculations and electrochemical analysis revealed that hot electrons are transferred from Bi metal to BPO via the Bi-BPO interface. DFT calculations further showed that enhanced O-2 activation on the Bi-BPO interface facilitates the generation of both superoxide (O-center dot(2)- ) and hydroxyl ((OH)-O-center dot) radicals, as confirmed by electron spin resonance, while in situ DRIFTS analysis demonstrated that NO is activated on the Bi-BPO interface and then oxidized to nitrates. Thus, this work highlights the SPR effects of Bi metal and promoted O-2 and NO activation in plasmonic photocatalysis, showing that the adopted approach can be generalized to design efficient and costeffective photocatalytic systems for the removal of other gaseous pollutants.
资助项目	National Science Foundation of China[41877481] ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS[SKLLQG1729] ; Fundamental Research Funds for the Central Universities[xjj2018249] ; Key Laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Natural Resources[SZDJ2019-15] ; China Postdoctoral Science Foundation[2018M643669] ; National Key Research and Development Program of China[2016YFA0203000]
WOS关键词	BI METAL ; FT-IR ; BIPO4 ; OXIDE ; DEGRADATION ; ADSORPTION ; DIOXIDE ; PATHWAY ; IDENTIFICATION ; NANOMATERIALS
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000523184600100
资助机构	National Science Foundation of China ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS ; Fundamental Research Funds for the Central Universities ; Key Laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Natural Resources ; China Postdoctoral Science Foundation ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/12554]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Chen, Meijuan; Huang, Yu
作者单位	1.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China 2.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian 710061, Peoples R China 4.Educ Univ Hong Kong, Dept Sci & Environm Studies, Hong Kong, Peoples R China 5.Minist Nat Resources China, Key Lab Degraded & Unused Land Consolidat Engn, Xian 710075, Peoples R China
推荐引用方式 GB/T 7714	Chen, Meijuan,Li, Xinwei,Huang, Yu,et al. Synthesis and characterization of Bi-BiPO4 nanocomposites as plasmonic photocatalysts for oxidative NO removal[J]. APPLIED SURFACE SCIENCE,2020,513:8.
APA	Chen, Meijuan.,Li, Xinwei.,Huang, Yu.,Yao, Jie.,Li, Yan.,...&Chen, Kehao.(2020).Synthesis and characterization of Bi-BiPO4 nanocomposites as plasmonic photocatalysts for oxidative NO removal.APPLIED SURFACE SCIENCE,513,8.
MLA	Chen, Meijuan,et al."Synthesis and characterization of Bi-BiPO4 nanocomposites as plasmonic photocatalysts for oxidative NO removal".APPLIED SURFACE SCIENCE 513(2020):8.