Electrochemical oxidation characteristics of p-substituted phenols using a boron-doped diamond electrode
文献类型：期刊论文
| 作者 | Zhu, Xiuping; Shi, Shaoyuan; Wei, Junjun; Lv, Fanxiu; Zhao, Huazhang; Kong, Jiangtao; He, Qi; Ni, Jinren |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2007-09-15 |
| 卷号 | 41期号:18页码:6541-6546 |
| 关键词 | waste-water treatment anodic-oxidation degradation chlorophenols mechanism |
| ISSN号 | 0013-936X |
| 其他题名 | Environ. Sci. Technol. |
| 中文摘要 | Electrochemical oxidation of some p-substituted phenols (p-nitrophenol, p-hydroxybenzaldehyde, phenol, p-cresol, and p-methoxyphenol) with electron-donating and -withdrawing substituents was studied to reveal the relationship between the structure and the electrochemical reactivity of p-substituted phenols using a boron-doped diamond electrode by voltammetry and bulk electrolysis. Voltammetric study shows that the oxidation peak potentials of p-substituted phenols become more positive with an increase of Hammett's constants, that is, the direct electrochemical oxidation of p-substituted phenol with an electron-withdrawing group is more difficult than that of p-substituted phenol with an electron-donating group. However,the p-substituted phenols with electron-withdrawing groups are degraded faster than those with electron-donating groups in bulk electrolysis, which is opposite to the result obtained on the Pt electrode. These results indicate that the p-substituted phenols are mainly degraded by indirect electrochemical oxidation with hydroxyl radicals on a boron-doped diamond electrode. Under the attack of hydroxyl radicals, the release of p-substituted groups from the aromatic ring is the rate-limiting step. Since electron-withdrawing groups are easy to be released, the p-substituted phenols with these groups are degraded faster than those with electron-donating groups. Therefore, the degradation rates of the p-substituted phenols rise with an increase of Hammett's constants. |
| 英文摘要 | Electrochemical oxidation of some p-substituted phenols (p-nitrophenol, p-hydroxybenzaldehyde, phenol, p-cresol, and p-methoxyphenol) with electron-donating and -withdrawing substituents was studied to reveal the relationship between the structure and the electrochemical reactivity of p-substituted phenols using a boron-doped diamond electrode by voltammetry and bulk electrolysis. Voltammetric study shows that the oxidation peak potentials of p-substituted phenols become more positive with an increase of Hammett's constants, that is, the direct electrochemical oxidation of p-substituted phenol with an electron-withdrawing group is more difficult than that of p-substituted phenol with an electron-donating group. However,the p-substituted phenols with electron-withdrawing groups are degraded faster than those with electron-donating groups in bulk electrolysis, which is opposite to the result obtained on the Pt electrode. These results indicate that the p-substituted phenols are mainly degraded by indirect electrochemical oxidation with hydroxyl radicals on a boron-doped diamond electrode. Under the attack of hydroxyl radicals, the release of p-substituted groups from the aromatic ring is the rate-limiting step. Since electron-withdrawing groups are easy to be released, the p-substituted phenols with these groups are degraded faster than those with electron-donating groups. Therefore, the degradation rates of the p-substituted phenols rise with an increase of Hammett's constants. |
| WOS标题词 | Science & Technology ; Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Engineering, Environmental ; Environmental Sciences |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology |
| 关键词[WOS] | WASTE-WATER TREATMENT ; ANODIC-OXIDATION ; DEGRADATION ; CHLOROPHENOLS ; MECHANISM |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000249500700041 |
| 公开日期 | 2013-10-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3539]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Peking Univ, Coll Environm Sci & Engn, Key Lab Water & Sediment Sci, Minist Educ, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100080, Peoples R China 3.Univ Sci & Technol Beijing, Dept Mat Sci & Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Xiuping,Shi, Shaoyuan,Wei, Junjun,et al. Electrochemical oxidation characteristics of p-substituted phenols using a boron-doped diamond electrode[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2007,41(18):6541-6546. |
| APA | Zhu, Xiuping.,Shi, Shaoyuan.,Wei, Junjun.,Lv, Fanxiu.,Zhao, Huazhang.,...&Ni, Jinren.(2007).Electrochemical oxidation characteristics of p-substituted phenols using a boron-doped diamond electrode.ENVIRONMENTAL SCIENCE & TECHNOLOGY,41(18),6541-6546. |
| MLA | Zhu, Xiuping,et al."Electrochemical oxidation characteristics of p-substituted phenols using a boron-doped diamond electrode".ENVIRONMENTAL SCIENCE & TECHNOLOGY 41.18(2007):6541-6546. |
入库方式： OAI收割
来源：过程工程研究所
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