Uniform Zn2+-Doped BiOI Microspheres Assembled by Ultrathin Nanosheets with Tunable Oxygen Vacancies for Super-Stable Removal of NO
文献类型：期刊论文
| 作者 | Rao, Fei2; Zhu, Gangqiang2; Hojamberdiev, Mirabbos1; Zhang, Weibin5; Li, Shiping2; Gao, Jianzhi2; Zhang, Fuchun3; Huang, Yuhong2; Huang, Yu4 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2019-07-04 |
| 卷号 | 123期号:26页码:16268-16280 |
| ISSN号 | 1932-7447 |
| DOI | 10.1021/acs.jpcc.9b03961 |
| 通讯作者 | Zhu, Gangqiang(zgq2006@snnu.edu.cn) |
| 英文摘要 | Highly exposed active facets and surface oxygen vacancies (OVs) are beneficial for the photocatalytic removal of various harmful organic compounds. In this study, uniform Zn2+ -doped BiOI microspheres, assembled by ultrathin nanosheets with highly exposed {001} facets, with OVs were successfully synthesized for NO removal under visible light irradiation. The phase structure and chemical states are analyzed by means of X-ray diffraction and X-ray photoelectron spectroscopy, respectively. The transmission electron microscopy observations reveal that replacing Bi3+ with Zn2+ can lead to the increased exposure of the {001} facets. X-ray photoelectron and electron paramagnetic resonance spectroscopy results confirm that low-state Zn2+ increases the number of OVs, indicating that an increased number of OVs and a reduced thickness of the nanosheets can enhance the photocatalytic activity for the removal of NO. The photo-oxidative removal efficiency of NO over 3%Zn-BiOI reaches 53.6% and remains highly stable (52.9%) for up to 210 min under visible light irradiation. The calculation of interface adsorption confirms that OVs and Zn2+ can not only offer a donor energy level to extend the solar response range but also act as adsorption sites for low concentration of NO and O-2 to optimize the transmission capacity of surface charge carriers. Moreover, this work systematically explains the function of OVs and Zn2+ in the adsorption process of NO. The in situ Fourier transform infrared spectroscopy supports understanding of the photo-oxidative removal mechanisms of NO over Zn-BiOI: (i) the byproducts were bidentate nitrites (bi-NO2-), chelate nitrites (ch-NO2-), and bridging nitrites (br-NO3-) in the dark condition and (ii) the final products were bridging nitrites and bidentate nitrites (bi-NO3-) under visible light irradiation. OVs are found to play an important role both in the dark adsorption and photo-oxidative removal of NO by the 3%Zn-BiOI sample. |
| WOS关键词 | SELECTIVE CATALYTIC-REDUCTION ; VISIBLE-LIGHT PHOTOCATALYSIS ; ROOM-TEMPERATURE SYNTHESIS ; CHARGE-TRANSFER ; OXIDATION ; DEGRADATION ; ADSORPTION ; MECHANISM ; METAL ; PERFORMANCE |
| 资助项目 | National Natural Science Foundation of China[51772183] ; National Natural Science Foundation of China[11847058] ; 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 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000474796600040 |
| 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/361006/13765]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 通讯作者 | Zhu, Gangqiang |
| 作者单位 | 1.Tech Univ Berlin, Inst Werkstoffwissensch & Technologien, Chair Adv Ceram Mat, Fachgebiet Keram Werkstoffe, Hardenbergstr 40, D-10623 Berlin, Germany 2.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Shaanxi, Peoples R China 3.Yanan Univ, Coll Phys & Elect Informat, Yanan 716000, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China 5.Yangtze Univ, Sch Phys & Optoelect Engn, Jingzhou 434023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Rao, Fei,Zhu, Gangqiang,Hojamberdiev, Mirabbos,et al. Uniform Zn2+-Doped BiOI Microspheres Assembled by Ultrathin Nanosheets with Tunable Oxygen Vacancies for Super-Stable Removal of NO[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2019,123(26):16268-16280. |
| APA | Rao, Fei.,Zhu, Gangqiang.,Hojamberdiev, Mirabbos.,Zhang, Weibin.,Li, Shiping.,...&Huang, Yu.(2019).Uniform Zn2+-Doped BiOI Microspheres Assembled by Ultrathin Nanosheets with Tunable Oxygen Vacancies for Super-Stable Removal of NO.JOURNAL OF PHYSICAL CHEMISTRY C,123(26),16268-16280. |
| MLA | Rao, Fei,et al."Uniform Zn2+-Doped BiOI Microspheres Assembled by Ultrathin Nanosheets with Tunable Oxygen Vacancies for Super-Stable Removal of NO".JOURNAL OF PHYSICAL CHEMISTRY C 123.26(2019):16268-16280. |
入库方式： OAI收割
来源：地球环境研究所
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