Novel Au/La-Bi5O7I Microspheres with Efficient Visible-Light Photocatalytic Activity for NO Removal: Synergistic Effect of Au Nanoparticles, La Doping, and Oxygen Vacancy

doi:10.1021/acsami.9b14300

IEECAS OpenIR > 粉尘与环境研究室

	Novel Au/La-Bi5O7I Microspheres with Efficient Visible-Light Photocatalytic Activity for NO Removal: Synergistic Effect of Au Nanoparticles, La Doping, and Oxygen Vacancy
	Zhang, Jingyu 1,2; Zhu, Gangqiang 1; Li, Shiping 1; Rao, Fei 1; Qadeer-Ul Hassan 1; Gao, Jianzhi 1; Huang, Yu 3; Hojamberdiev, Mirabbos 4
通讯作者	Zhu, Gangqiang(zgq2006@snnu.edu.cn) ; Huang, Yu(huangyu@ieecas.cn)
	2019-10-16
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
卷号	11 期号:41 页码:37822-37832
摘要	Sphere-like Bi5O7I (BOI) doped with La (L-BOI) samples were prepared by a solvothermal method followed by calcination at 450 degrees C for 2 h. Au nanoparticles were loaded on 6% La-doped Bi5O7I (2%A-6%L-BOI) microspheres by a room-temperature chemical reduction method. The UV-vis absorption spectra show that the L-BOI and 2%A-6%L-BOI samples have a strong visible-light absorption in comparison with the pure BOI. The electron paramagnetic resonance results indicate that the number of oxygen vacancies in L-BOI samples is increased with an increasing amount of the La dopant. The band structure of the prepared photocatalysts is investigated by confirming the positions of the valence band (VB) measured by XPS-VB and the Fermi level computed by density functional theory, respectively. NO is selected as a target gaseous pollutant to confirm the influence of La doping and the plasmonic effect of Au nanoparticles on the photocatalytic activity of BOI microspheres. The 2%A-6%L-BOI sample exhibits an enhanced photocatalytic performance compared to BOI, L-BOI, and A-BOI photocatalysts under visible -light irradiation. Interestingly, the 2%A-6%L-BOI sample also can reduce the amount of intermediate NO2 during the NO removal process. The enhanced photocatalytic efficiency of the 2%A-6%L-BOI photocatalyst is profited from the synergy of La-ion doping, oxygen vacancy, and the surface plasmon resonance effect of Au nanoparticles. Based on the results of trapping experiments and electron spin resonance spectroscopy tests, h(+), e(-), and O-center dot(2)- were involved in the NO oxidative removal.
关键词	bismuth oxyhalide Bi5O4I lanthanum doping Au nanoparticles oxygen vacancy NOx removal
DOI	10.1021/acsami.9b14300
关键词[WOS]	HIERARCHICAL ARCHITECTURES ; CHARGE SEPARATION ; BIOI MICROSPHERES ; DEGRADATION ; NANOSHEETS ; METAL ; PLASMON ; PHOTOLUMINESCENCE ; HETEROJUNCTIONS ; TRANSFORMATION
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[51772183] ; Key Research and Development Program of Shaanxi Province[2018ZDCXL-SF-02-04] ; Fundamental Research Funds for the Central Universities[GK201903023] ; Fundamental Research Funds for the Central Universities[GK201801005] ; Alexander von Humboldt (AvH) Stiftung
WOS研究方向	Science & Technology - Other Topics ; Materials Science
项目资助者	National Natural Science Foundation of China ; Key Research and Development Program of Shaanxi Province ; Fundamental Research Funds for the Central Universities ; Alexander von Humboldt (AvH) Stiftung
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000491219700045
出版者	AMER CHEMICAL SOC
引用统计	被引频次：72[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/12897
专题	粉尘与环境研究室
通讯作者	Zhu, Gangqiang; Huang, Yu
作者单位	1.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Shaanxi, Peoples R China 2.Nankai Univ, Natl Inst Adv Mat, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China 4.Tech Univ Berlin, Inst Werkstoffwissensch & Technol, Fachgebiet Keram Werkstoffe, Hardenbergstr 40, D-10623 Berlin, Germany
推荐引用方式 GB/T 7714	Zhang, Jingyu,Zhu, Gangqiang,Li, Shiping,et al. Novel Au/La-Bi5O7I Microspheres with Efficient Visible-Light Photocatalytic Activity for NO Removal: Synergistic Effect of Au Nanoparticles, La Doping, and Oxygen Vacancy[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(41):37822-37832.
APA	Zhang, Jingyu.,Zhu, Gangqiang.,Li, Shiping.,Rao, Fei.,Qadeer-Ul Hassan.,...&Hojamberdiev, Mirabbos.(2019).Novel Au/La-Bi5O7I Microspheres with Efficient Visible-Light Photocatalytic Activity for NO Removal: Synergistic Effect of Au Nanoparticles, La Doping, and Oxygen Vacancy.ACS APPLIED MATERIALS & INTERFACES,11(41),37822-37832.
MLA	Zhang, Jingyu,et al."Novel Au/La-Bi5O7I Microspheres with Efficient Visible-Light Photocatalytic Activity for NO Removal: Synergistic Effect of Au Nanoparticles, La Doping, and Oxygen Vacancy".ACS APPLIED MATERIALS & INTERFACES 11.41(2019):37822-37832.