Novel Au/La-Bi5O7I Microspheres with Efficient Visible-Light Photocatalytic Activity for NO Removal: Synergistic Effect of Au Nanoparticles, La Doping, and Oxygen Vacancy
文献类型：期刊论文
| 作者 | Zhang, Jingyu3,4; Zhu, Gangqiang3; Li, Shiping3; Rao, Fei3; Qadeer-Ul Hassan3; Gao, Jianzhi3; Huang, Yu2; Hojamberdiev, Mirabbos1 |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2019-10-16 |
| 卷号 | 11期号:41页码:37822-37832 |
| 关键词 | bismuth oxyhalide Bi5O4I lanthanum doping Au nanoparticles oxygen vacancy NOx removal |
| ISSN号 | 1944-8244 |
| DOI | 10.1021/acsami.9b14300 |
| 通讯作者 | Zhu, Gangqiang(zgq2006@snnu.edu.cn) ; Huang, Yu(huangyu@ieecas.cn) |
| 英文摘要 | 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. |
| WOS关键词 | HIERARCHICAL ARCHITECTURES ; CHARGE SEPARATION ; BIOI MICROSPHERES ; DEGRADATION ; NANOSHEETS ; METAL ; PLASMON ; PHOTOLUMINESCENCE ; HETEROJUNCTIONS ; TRANSFORMATION |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:000491219700045 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | 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 |
| 源URL | [http://ir.ieecas.cn/handle/361006/12896]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 通讯作者 | Zhu, Gangqiang; Huang, Yu |
| 作者单位 | 1.Tech Univ Berlin, Inst Werkstoffwissensch & Technol, Fachgebiet Keram Werkstoffe, Hardenbergstr 40, D-10623 Berlin, Germany 2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China 3.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Shaanxi, Peoples R China 4.Nankai Univ, Natl Inst Adv Mat, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China |
| 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. |
入库方式： OAI收割
来源：地球环境研究所
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