Synergetic activation of H2O2 by photo-generated electrons and cathodic Fenton reaction for enhanced self-driven photoelectrocatalytic degradation of organic pollutants
文献类型：期刊论文
| 作者 | Zhao, Xu; Mao, Ran; Cao, Di; Liu, Shanshan; Li, Xia |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2018-11-05 |
| 卷号 | 235页码:1-8 |
| 关键词 | Photocatalytic fuel cell Self-bias H2O2 activation Cathodic Fenton reaction Recalcitrant organics |
| ISSN号 | 0926-3373 |
| 文献子类 | Article |
| 英文摘要 | In this work, a self-driven photocatalytic fuel cell (PFC) system was constructed, which consisted of a noble metal-free Cu2O/CuO photocathode and a semi-transparent BiVO4 photoanode. The proposed PFC system was used for the degradation of phenol and the removal efficiency of phenol using BiVO4-Cu2O/CuO system was higher than the PFC using Pt cathode (BiVO4-Pt, 67.3%) and bare Cu2O cathode (BiVO4-Cu2O, 84.6%). The short circuit photocurrent of the BiVO4- Cu2O/CuO system was 0.30 mA cm(-2), which was higher than the sum of photocurrents generated by the other two photoelectrodes. This could be attributed to the self-driven bias induced by the good match of Fermi levels (E-ps) between the BiVO4 and the heterojunction Cu2O/CuO electrode. The addition of 5 mM H2O2 to the PFC system greatly enhanced the degradation process, with the pseudo-first order kinetic rate constant increased from 0.136 to 2.568 h(-1) after the addition of H2O2. Compared with traditional Fenton and Cu-based Fenton-like process, the PFC-H2O2 system has advantages of the broad working pH range (4-7), zero formation of ferric hydroxide sludge and less copper leaching. The X-ray photoelectron spectroscopy (XPS) analysis confirmed the cycle between Cu(I) and Cu(II) on the surface of Cu2O/CuO photocathode, indicating that a Fenton-like reaction had occurred on Cu2O/CuO photocathode. The H2O2 was activated by both the photo-generated electrons and the Cu2O/CuO cathode, which further increased the degradation efficiency of phenol. Furthermore, a high stability was exhibited by the H2O2-PFC system. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41420]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, Xu,Mao, Ran,Cao, Di,et al. Synergetic activation of H2O2 by photo-generated electrons and cathodic Fenton reaction for enhanced self-driven photoelectrocatalytic degradation of organic pollutants[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,235:1-8. |
| APA | Zhao, Xu,Mao, Ran,Cao, Di,Liu, Shanshan,&Li, Xia.(2018).Synergetic activation of H2O2 by photo-generated electrons and cathodic Fenton reaction for enhanced self-driven photoelectrocatalytic degradation of organic pollutants.APPLIED CATALYSIS B-ENVIRONMENTAL,235,1-8. |
| MLA | Zhao, Xu,et al."Synergetic activation of H2O2 by photo-generated electrons and cathodic Fenton reaction for enhanced self-driven photoelectrocatalytic degradation of organic pollutants".APPLIED CATALYSIS B-ENVIRONMENTAL 235(2018):1-8. |
入库方式： OAI收割
来源：生态环境研究中心
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