Lanzhou University of Technology Institutional Repository （LUT_IR）
| Synergistically enhanced photocatalytic performance of Bi4Ti3O12 nanosheets by Au and Ag nanoparticles | |
Zhao, Xinxin1; Yang, Hua1 ; Cui, Ziming1; Yi, Zao2; Yu, Hui3
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| 2019-07 | |
| 发表期刊 | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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| ISSN | 0957-4522 |
| 卷号 | 30期号:14页码:13785-13796 |
| 摘要 | In this work, we attempted to assemble Au and Ag nanoparticles (NPs) with different sizes onto Bi4Ti3O12 (BTO) nanosheets with the aim of synergistically enhancing the photocatalytic performance. The as-prepared Au-Ag@BTO composite was systematically characterized by means of TEM, XRD, XPS, FTIR, UV-vis DRS, PL spectroscopy, EIS and photocurrent spectroscopy. The TEM observation demonstrates that larger-sized Au NPs (average size: 20nm) and smaller-sized Ag NPs (average size: 8 nm) are uniformly decorated on the surface of BTO nanosheets. Compared to bare BTO, the Au-Ag@BTO composite manifests an increased visible light absorption, increased bandgap, increased photocurrent density, decreased charge-transfer resistance and decreased PL intensity. Separately using simulated sunlight, UV light and visible light as the light source, the photocatalytic performance of the composite was evaluated by the degradation of RhB. An enhanced photocatalytic performance of the composite is observed in all the cases. Under UV irradiation, the photocatalytic enhancement is mainly ascribed to the efficient separation of photogenerated electron/hole pairs caused by the smaller-sized Ag NPs, whereas the photocatalytic enhancement under visible light irradiation is dominantly due to the LSPR effects of the larger-sized Au NPs. The synergistic photocatalytic enhancement between Ag and Au NPs is achieved under simulated sunlight irradiation. Active species trapping experiments were carried out, revealing that photogenerated holes and O-2(-) radicals play a dominant and secondary role in the photocatalysis, respectively. |
| 关键词 | Bismuth compounds Charge transfer Fourier transform infrared spectroscopy Gold metallography Irradiation Light Light absorption Light sources Metal nanoparticles Nanosheets Photocatalytic activity Silver nanoparticles Titanium compounds Uranium metallography Vanadium metallography Charge transfer resistance Photocatalytic performance Photocurrent density Photocurrent spectroscopy Photogenerated electrons Photogenerated holes Visible light absorption Visible-light irradiation |
| DOI | 10.1007/s10854-019-01762-7 |
| 收录类别 | SCI ; SCIE |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[51662027] |
| WOS研究方向 | Engineering ; Materials Science ; Physics |
| WOS类目 | Engineering, Electrical & Electronic ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| WOS记录号 | WOS:000476518000096 |
| 出版者 | SPRINGER |
| EI入藏号 | 20192907187971 |
| EI主题词 | Silver metallography |
| EI分类号 | 531.2 Metallography - 547 Minor, Precious and Rare Earth Metals and Alloys - 547.1 Precious Metals - 741.1 Light/Optics - 761 Nanotechnology - 801 Chemistry - 802.2 Chemical Reactions |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/31770 |
| 专题 | 省部共建有色金属先进加工与再利用国家重点实验室 理学院 |
| 通讯作者 | Yang, Hua |
| 作者单位 | 1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China; 2.Southwest Univ Sci & Technol, Joint Lab Extreme Condit Matter Properties, Mianyang 621010, Sichuan, Peoples R China; 3.Changchun Univ Sci & Technol, Sch Chem & Environm Engn, Changchun 130022, Jilin, Peoples R China |
| 第一作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
| 通讯作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
| 第一作者的第一单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, Xinxin,Yang, Hua,Cui, Ziming,et al. Synergistically enhanced photocatalytic performance of Bi4Ti3O12 nanosheets by Au and Ag nanoparticles[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2019,30(14):13785-13796. |
| APA | Zhao, Xinxin,Yang, Hua,Cui, Ziming,Yi, Zao,&Yu, Hui.(2019).Synergistically enhanced photocatalytic performance of Bi4Ti3O12 nanosheets by Au and Ag nanoparticles.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,30(14),13785-13796. |
| MLA | Zhao, Xinxin,et al."Synergistically enhanced photocatalytic performance of Bi4Ti3O12 nanosheets by Au and Ag nanoparticles".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 30.14(2019):13785-13796. |
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| Zhao-2019-Synergisti（1766KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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