Coral-Shaped TiO2-delta Decorated with Carbon Quantum Dots and Carbon Nanotubes for NO Removal
文献类型：期刊论文
| 作者 | Ou, Yucheng1; Zhu, Gangqiang1; Rao, Fei1; Gao, Jianzhi1; Chang, Jun1; Xie, Xiaotao1; Zhang, Weibin1; Huang, Yu2; Hojamberdiev, Mirabbos1 |
| 刊名 | ACS APPLIED NANO MATERIALS
 |
| 出版日期 | 2021-07-23 |
| 卷号 | 4期号:7页码:7330-7342 |
| ISSN号 | 2574-0970 |
| 关键词 | TiO2 oxygen vacancy carbon nanotubes carbon quantum dots photocatalysis full spectrum response NO removal |
| DOI | 10.1021/acsanm.1c01306 |
| 通讯作者 | Zhu, Gangqiang(zgq2006@snnu.edu.cn) ; Zhang, Weibin(wbzhang@yangtzeu.edu.cn) |
| 英文摘要 | Coral-like TiO2-delta] microstructures with high surface area were synthesized by a simple hydrothermal method, followed by thermal treatment in a N-2 atmosphere. The introduction of oxygen vacancies (OVs) to TiO2 significantly improved light absorption and inhibited the recombination of photogenerated charge carriers. Then, multiwalled carbon nanotubes (CNTs) and N-doped carbon quantum dots (N-CQDs) were decorated on the surface of coral-like TiO2-delta microstructures. The CNTs could greatly improve the separation and transfer efficiency of photogenerated charge carriers, while the N-CQDs could further extend light absorption to longer wavelengths, including the IR region. According to the results of electron spin resonance (ESR) spectroscopy, the introduction of OVs to TiO2-delta and surface modification with CNTs and N-CQDs promoted the generation of O-center dot(2)- and (OH)-O-center dot active species. The formation of O-center dot(2)- and (OH)-O-center dot active species on the surface of TiO2-delta/CNTs/N-CQDs played an important role in the deep oxidation and selective conversion of NO into nitrate. Density functional theory calculations revealed the adsorption and reaction sites for H2O and O-2 separately in space over the surface of TiO2-delta CNTs/N-CQDs. Namely, the reaction sites of H2O and O-2 are on the surface of TiO2- delta and CNTs, respectively. The electron transfer from TiO2-delta to CNTs was further verified through the differential charge density. This study demonstrates a straightforward approach for designing full-spectrum-responsive photocatalysts with high efficiency, stability, and selectivity for NO removal. |
| WOS关键词 | PHOTOCATALYTIC PERFORMANCE ; CHARGE-TRANSFER ; MECHANISM ; TIO2 ; ADSORPTION ; OXIDATION ; NANOCOMPOSITE ; MICROSPHERES ; DEGRADATION ; DRIVEN |
| 资助项目 | 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[2020TS028] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000677582900084 |
| 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 |
| 源URL | [http://ir.ieecas.cn/handle/361006/16891]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 通讯作者 | Zhu, Gangqiang; Zhang, Weibin |
| 作者单位 | 1.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China 2.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ou, Yucheng,Zhu, Gangqiang,Rao, Fei,et al. Coral-Shaped TiO2-delta Decorated with Carbon Quantum Dots and Carbon Nanotubes for NO Removal[J]. ACS APPLIED NANO MATERIALS,2021,4(7):7330-7342. |
| APA | Ou, Yucheng.,Zhu, Gangqiang.,Rao, Fei.,Gao, Jianzhi.,Chang, Jun.,...&Hojamberdiev, Mirabbos.(2021).Coral-Shaped TiO2-delta Decorated with Carbon Quantum Dots and Carbon Nanotubes for NO Removal.ACS APPLIED NANO MATERIALS,4(7),7330-7342. |
| MLA | Ou, Yucheng,et al."Coral-Shaped TiO2-delta Decorated with Carbon Quantum Dots and Carbon Nanotubes for NO Removal".ACS APPLIED NANO MATERIALS 4.7(2021):7330-7342. |
入库方式： OAI收割
来源：地球环境研究所
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