| High Selectivity of Visible-Light-Driven La-doped TiO2 Photocatalysts for NORemoval | |
| Huang,Y(Huang,Yu)1; Cao,JJ(Cao,Junji)1; Kang,F(Kang,Fei)2; You,SJ(You,Shengjie)2; Chang,CW(Chang,Chia-Wei)2; Wang,YF(Wang,Yafen)2; Wang,Yafen | |
| 2017-10 | |
| 发表期刊 | Aerosol and Air Quality Research
 |
| 卷号 | 17期号:10页码:2555-2565 |
| 文章类型 | 期刊论文 |
| 摘要 | Semiconductors mediated by rare earth metals (REMs) have attracted attention with regard to the degradation of pollutants. In order to enhance the visible response of TiO2, La-doped TiO2 (La-TO) photocatalysts with visible-light-driven capacity for NO removal were successfully synthesized in this study via a facile sol-gel method followed by calcination. A series of La-TiO2 samples with differing weight ratios were evaluated for their photocatalytic performances. It was found that 3% La integrated with TiO2 (in mass ratio) could enhance the removal efficiency of NO (up to 32%) under solar light, which is more than twice that seen with pure TiO2. The resulting products were characterized by a series of techniques, such as XRD, FTIR, UV-vis DRS, BET and (photo)electrochemical analysis. The results indicated that La-doped TiO2 can harvest visible light due to the relatively narrow band gap (from 2.98 to 2.75 eV). More importantly, La dopant improved electron-hole separation and suppressed charge carrier recombination, due to the synergistic effect. Furthermore, La-doped TiO2 increased the photo-oxidation efficiency of the transformation from NO to NO3–, owing to inhibition of the production of intermediate NO2 (0.02%). To the best of our knowledge, this study is the first time that La-doped TiO2 has been used to eliminate NO (at the ppb level) in the atmosphere. This study provides a facile and controllable route to fabricate La-TO photocatalyst for NO abatement with high selectivity of NO2 under visible light. |
| 关键词 | La-doped Tio2 Photocatalysis No Removal |
| DOI | 10.4209/aaqr.2017.08.0282 |
| 收录类别 | SCI |
| 所属项目编号 | EPA-105-XB05 ; 41401567 ; 41573138 |
| 语种 | 英语 |
| 项目资助者 | Environmental Protection Administration Executive Yuan,Taiwan ; Environmental Protection Administration Executive Yuan,Taiwan ; National Science Foundation of China ; National Science Foundation of China |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5598 |
| 专题 | 粉尘与环境研究室 |
| 通讯作者 | Wang,Yafen |
| 作者单位 | 1.Key Laboratory of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710061, China 2.Department of Environmental Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan |
| 推荐引用方式 GB/T 7714 | Huang,Y,Cao,JJ,Kang,F,et al. High Selectivity of Visible-Light-Driven La-doped TiO2 Photocatalysts for NORemoval[J]. Aerosol and Air Quality Research,2017,17(10):2555-2565. |
| APA | Huang,Y.,Cao,JJ.,Kang,F.,You,SJ.,Chang,CW.,...&Wang,Yafen.(2017).High Selectivity of Visible-Light-Driven La-doped TiO2 Photocatalysts for NORemoval.Aerosol and Air Quality Research,17(10),2555-2565. |
| MLA | Huang,Y,et al."High Selectivity of Visible-Light-Driven La-doped TiO2 Photocatalysts for NORemoval".Aerosol and Air Quality Research 17.10(2017):2555-2565. |
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