Oxygen vacancy defects-boosted deep oxidation of NO by beta-Bi2O3/CeO2-delta p-n heterojunction photocatalyst in situ synthesized from Bi/Ce(CO3) (OH) precursor
文献类型：期刊论文
| 作者 | Nie, Junli4,5; Zhu, Gangqiang5; Zhang, Weibin3; Gao, Jianzhi5; Zhong, Peng2; Xie, Xiaotao5; Huang, Yu4; Hojamberdiev, Mirabbos1 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2021-11-15 |
| 卷号 | 424页码:11 |
| ISSN号 | 1385-8947 |
| 关键词 | Bi/Ce(CO3)(OH) beta-Bi2O3/CeO2-delta Oxygen vacancy NO removal P-n heterojunction Deep oxidation |
| DOI | 10.1016/j.cej.2021.130327 |
| 通讯作者 | Zhu, Gangqiang(zgq2006@snnu.edu.cn) ; Huang, Yu(huangyu@ieecas.cn) |
| 英文摘要 | Flower-like n-type CeO2-delta is hybridized with p-type beta-Bi2O3 nanoparticles to design a novel beta-Bi2O3/CeO2-delta p-n heterojunction photocatalyst via a thermal treatment process of Bi/Ce(CO3)(OH) precursor. The synthesized beta-Bi2O3/CeO2-delta exhibits a remarkable enhancement in NO removal and significant suppression of toxic intermediates nitrogen dioxide (NO2) under visible light irradiation. The superior photocatalytic activity of beta-Bi2O3/CeO2-delta for NO removal is mainly derived from the synergistic effects of the oxygen vacancies (OVs) and p-n heterojunction. The OVs not only enhance the visible light utilization and boost the separation of electronhole pairs but also improve the adsorption and activation of NO and O-2. Particularly, the p-n heterojunction is beneficial for the interfacial migration of photogenerated charge carriers. Electron spin resonance (ESR) and trapping experiment reveal that the synergistic effects of OVs and p-n heterojunction can induce the generation of more active species. The electrochemical measurements and density-functional theory (DFT) calculations indepth confirm that both p-n heterojunction and OVs can accelerate the interfacial charge transfer, resulting in the deep oxidation of reactants. Therefore, the flower-like beta-Bi2O3/CeO2-delta p-n heterojunction photocatalyst exhibits an advanced photocatalytic activity for deep NO removal and a suppressed NO2 generation. In addition, monitoring the reaction products by in situ Fourier transform infrared spectrum (FTIR) further validates that the main products of nitrates are formed during the photocatalytic process. This work demonstrates a straightforward approach for construction of p-n heterojunction photocatalysts, which can enhance the effective photocatalytic activity and stability for NO removal. |
| WOS关键词 | VISIBLE-LIGHT IRRADIATION ; BI METAL ; DEGRADATION ; REMOVAL ; PERFORMANCE ; FABRICATION ; MECHANISM ; SPECTRUM ; CEO2 ; NANOCOMPOSITE |
| 资助项目 | National Key Research and Development Program of China[2016YFA0203000] ; National Natural Science Foundation of China[51772183] ; National Natural Science Foundation of China[52072230] ; key Research and Development Program of Shaanxi Province[2018ZDCXL-SF-02-04] ; Fundamental Research Funds for the Central Universities[GK201903023] ; Graphene Application Technology Tangshan Public Service Platform |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000728512300003 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; key Research and Development Program of Shaanxi Province ; Fundamental Research Funds for the Central Universities ; Graphene Application Technology Tangshan Public Service Platform |
| 源URL | [http://ir.ieecas.cn/handle/361006/17311]  |
| 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 Chem, Str 17,Juni 135, D-10623 Berlin, Germany 2.Xidian Univ, Sch Adv Mat & Nanotechnol, Xian 710126, Peoples R China 3.Yangtze Univ, Sch Phys & Optoelect Engn, Jingzhou 434023, Peoples R China 4.Inst Earth Environm, Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 5.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nie, Junli,Zhu, Gangqiang,Zhang, Weibin,et al. Oxygen vacancy defects-boosted deep oxidation of NO by beta-Bi2O3/CeO2-delta p-n heterojunction photocatalyst in situ synthesized from Bi/Ce(CO3) (OH) precursor[J]. CHEMICAL ENGINEERING JOURNAL,2021,424:11. |
| APA | Nie, Junli.,Zhu, Gangqiang.,Zhang, Weibin.,Gao, Jianzhi.,Zhong, Peng.,...&Hojamberdiev, Mirabbos.(2021).Oxygen vacancy defects-boosted deep oxidation of NO by beta-Bi2O3/CeO2-delta p-n heterojunction photocatalyst in situ synthesized from Bi/Ce(CO3) (OH) precursor.CHEMICAL ENGINEERING JOURNAL,424,11. |
| MLA | Nie, Junli,et al."Oxygen vacancy defects-boosted deep oxidation of NO by beta-Bi2O3/CeO2-delta p-n heterojunction photocatalyst in situ synthesized from Bi/Ce(CO3) (OH) precursor".CHEMICAL ENGINEERING JOURNAL 424(2021):11. |
入库方式： OAI收割
来源：地球环境研究所
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