H2O2 Assisted Photoelectrocatalytic Oxidation of Ag-Cyanide Complexes at Metal-free g-C3N4 Photoanode with Simultaneous Ag Recovery
文献类型：期刊论文
| 作者 | Qi, Fanjing; Yang, Bo; Wang, Yanbin; Mao, Ran; Zhao, Xu |
| 刊名 | ACS SUSTAINABLE CHEMISTRY & ENGINEERING
 |
| 出版日期 | 2017-06-01 |
| 卷号 | 5期号:6页码:5001-5007 |
| 关键词 | Ag Cyanide Complexes G-c3n4 Photoelectrocatalysis Metal Recovery Visible Light |
| 英文摘要 | A g-C3N4 thin film was synthesized by a liquid-based reaction onto ITO substrate via the calcination treatment. The resultant electrode was used as photoanode for photoelectrocatalytic (PEC) oxidation of Ag cyanide complexes with simultaneous Ag recovery, which was enhanced with the addition of H2O2. Surface variation of the gC(3)N(4) photoanode and titanium cathode was analyzed using SEM, XRD, and XPS techniques. It was observed that, with the cyanide oxidation, Ag oxides and metal Ag were deposited onto the g-C3N4 photoanode and titanium cathode, respectively. The photoelectrochemical response of the g-C3N4 photoanode was obviously increased after the Ago deposition. ESR and trapping experiments confirmed the existence and roles of O-center dot(2)- and (OH)-O-center dot in the PEC oxidation process. The photogenerated electrons from gC(3)N(4) could be captured by O-center dot(2)- and H2O2, generating (OH)-O-center dot radicals for oxidizing the Ag cyanide complexes. Meanwhile, the deposition of AgO species onto the g-C3N4 surface increased its and the migration rate of the photogenerated electrons. Deposited AgO can also enhance the production leading to an increased PEC activity toward the cyanide destruction. electrical conductivity of active radicals, |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39704]  |
| 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 | Qi, Fanjing,Yang, Bo,Wang, Yanbin,et al. H2O2 Assisted Photoelectrocatalytic Oxidation of Ag-Cyanide Complexes at Metal-free g-C3N4 Photoanode with Simultaneous Ag Recovery[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2017,5(6):5001-5007. |
| APA | Qi, Fanjing,Yang, Bo,Wang, Yanbin,Mao, Ran,&Zhao, Xu.(2017).H2O2 Assisted Photoelectrocatalytic Oxidation of Ag-Cyanide Complexes at Metal-free g-C3N4 Photoanode with Simultaneous Ag Recovery.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,5(6),5001-5007. |
| MLA | Qi, Fanjing,et al."H2O2 Assisted Photoelectrocatalytic Oxidation of Ag-Cyanide Complexes at Metal-free g-C3N4 Photoanode with Simultaneous Ag Recovery".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 5.6(2017):5001-5007. |
入库方式： OAI收割
来源：生态环境研究中心
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