| Visible-light-driven N-(BiO)(2)CO3/Graphene oxide composites with improved photocatalytic activity and selectivity for NOx removal | |
| Chen, Meijuan1; Huang, Yu2,3; Yao, Jie2; Cao, Jun-ji2,3; Liu, Yuan2 | |
| 2018-02-01 | |
| 发表期刊 | APPLIED SURFACE SCIENCE
 |
| 卷号 | 430期号:2018页码:137-144 |
| 文章类型 | Article |
| 摘要 | N-doped (BiO)(2)CO3 (NBOC)/graphene oxide (GO) composite obtained from three-dimensional hierarchical microspheres is successfully synthesized by one-pot hydrothermal method for the first time. In this synthesis, citrate ion plays a critical role in N doping. The obtained samples are used to degrade gaseous nitrogen oxides (NOx) at parts-per-billion (ppb) level under visible-light irradiation. NBOC-GO composite with 1.0 wt% graphene oxide (GO) displays the highest photocatalytic NO removal efficiency, which is 4.3 times higher than that of pristine (BiO)(2)CO3. Moreover, NBOC-GO composite significantly inhibits toxic NO2 intermediate production, indicating its high selectivity for NO conversion. Compared with regular GO, N doping considerably improves the catalytic performance of NBOC-GO composite, which increases NO removal by 74.6% and fully inhibits NO2 generation. The improved photocatalytic activity is mainly ascribed to extended optical absorption ability and enhanced separation efficiency of photogenerated charge carriers over NBOC-GO composite. Both results of electron spin resonance and theoretical analysis of band structure indicate that NO removal is dominated by oxidation with center dot OH and center dot O-2(-) radicals. The photocatalytic activity improvement mechanism over the NBOC-GO composite is proposed accordingly based on systematic characterizations. This study demonstrates a feasible route to fabricating Bi-containing composites with high selectivity and stability for air pollution control and provides a new insight into the associated photocatalytic mechanisms. (C) 2017 Elsevier B.V. All rights reserved. |
| 关键词 | (Bio)(2)Co3 n Doping Go No Removal Composite |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| DOI | 10.1016/j.apsusc.2017.06.056 |
| 关键词[WOS] | (BIO)(2)CO3 HIERARCHICAL MICROSPHERES ; FACILE SYNTHESIS ; PERFORMANCE ; BI2O2CO3 ; GRAPHENE ; SURFACE ; DEGRADATION ; FABRICATION ; POLLUTANTS ; STABILITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| WOS类目 | Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter |
| WOS记录号 | WOS:000416961500008 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5178 |
| 专题 | 粉尘与环境研究室 |
| 作者单位 | 1.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Meijuan,Huang, Yu,Yao, Jie,et al. Visible-light-driven N-(BiO)(2)CO3/Graphene oxide composites with improved photocatalytic activity and selectivity for NOx removal[J]. APPLIED SURFACE SCIENCE,2018,430(2018):137-144. |
| APA | Chen, Meijuan,Huang, Yu,Yao, Jie,Cao, Jun-ji,&Liu, Yuan.(2018).Visible-light-driven N-(BiO)(2)CO3/Graphene oxide composites with improved photocatalytic activity and selectivity for NOx removal.APPLIED SURFACE SCIENCE,430(2018),137-144. |
| MLA | Chen, Meijuan,et al."Visible-light-driven N-(BiO)(2)CO3/Graphene oxide composites with improved photocatalytic activity and selectivity for NOx removal".APPLIED SURFACE SCIENCE 430.2018(2018):137-144. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Visible-light-driven（3540KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论