Visible-light-driven N-(BiO)(2)CO3/Graphene oxide composites with improved photocatalytic activity and selectivity for NOx removal
文献类型：期刊论文
| 作者 | Yao, Jie1; Cao, Jun-ji1,2; Liu, Yuan1; Huang, Yu1,2; Chen, Meijuan3 |
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 430期号:2018页码:137-144 |
| 关键词 | (Bio)(2)Co3 n Doping Go No Removal Composite |
| DOI | 10.1016/j.apsusc.2017.06.056 |
| 文献子类 | Article |
| 英文摘要 | 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. |
| WOS关键词 | (BIO)(2)CO3 HIERARCHICAL MICROSPHERES ; FACILE SYNTHESIS ; PERFORMANCE ; BI2O2CO3 ; GRAPHENE ; SURFACE ; DEGRADATION ; FABRICATION ; POLLUTANTS ; STABILITY |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000416961500008 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5178]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China 3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Jie,Cao, Jun-ji,Liu, Yuan,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 | Yao, Jie,Cao, Jun-ji,Liu, Yuan,Huang, Yu,&Chen, Meijuan.(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 | Yao, Jie,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. |
入库方式： OAI收割
来源：地球环境研究所
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