Graphitic N in nitrogen-Doped carbon promotes hydrogen peroxide synthesis from electrocatalytic oxygen reduction
文献类型：期刊论文
| 作者 | Zhang, Junyu; Zhang, Gong; Jin, Shengyao; Zhou, Yujun; Ji, Qinghua ; Lan, Huachun; Liu, Huijuan; Qu, Jiuhui
|
| 刊名 | CARBON
 |
| 出版日期 | 2020-08-15 |
| 卷号 | 163页码:154-161 |
| ISSN号 | 0008-6223 |
| 英文摘要 | Electrocatalytic two-electron oxygen reduction reaction (2e(-) ORR) is a promising strategy to achieve hydrogen peroxide (H2O2) production, which can replace the anthraquinone method in industrial processes. Nitrogen-doped carbon materials are active and selective electrocatalysts for 2e(-) ORR; however, it remains challenging to develop N-doped carbons for practical H2O2 production and pinpoint the exact role of nitrogen functionalities. Here, we examine covalent organic framework-derived nitrogen-doped carbons with well-defined porous structure and tunable N species for electrocatalytic H2O2 production. Electrochemical studies show their highest ORR activity and H2O2 selectivity of up to 75% in alkaline electrolyte. Notably, chronoamperometric bulk electrolysis achieves an unprecedented carbon-catalyzed H2O2 yield rate of 1286.9 mmol g(catalyst)(-1) h(-1) and a faradaic efficiency of 69.8% at pH 13. X-ray photoelectron spectroscopy analysis combined with control experiments reveals that graphitic N is responsible for H2O2 production from 2e(- )ORR on N-doped carbons. Our work provides insights into the rational development of heteroatom-doped carbon electrocatalysts for efficient H2O2 generation. (C) 2020 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45299]  |
| 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 | Zhang, Junyu,Zhang, Gong,Jin, Shengyao,et al. Graphitic N in nitrogen-Doped carbon promotes hydrogen peroxide synthesis from electrocatalytic oxygen reduction[J]. CARBON,2020,163:154-161. |
| APA | Zhang, Junyu.,Zhang, Gong.,Jin, Shengyao.,Zhou, Yujun.,Ji, Qinghua.,...&Qu, Jiuhui.(2020).Graphitic N in nitrogen-Doped carbon promotes hydrogen peroxide synthesis from electrocatalytic oxygen reduction.CARBON,163,154-161. |
| MLA | Zhang, Junyu,et al."Graphitic N in nitrogen-Doped carbon promotes hydrogen peroxide synthesis from electrocatalytic oxygen reduction".CARBON 163(2020):154-161. |
入库方式： OAI收割
来源：生态环境研究中心
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