Ammonia etched petroleum pitch‑based porous carbon as efficient catalysts for CO2 electroreduction
(주)코리아스칼라
- 최초 등록일
- 2023.05.08
- 최종 저작일
- 2022.05
- 8페이지/ 어도비 PDF
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon letters / 32권 / 3호
ㆍ저자명 : Hui Ning, Zhihao Guo, Wenhang Wang, Xiaoshan Wang, Zhongxue Yang, Zhengguang Ma, Yangming Tian, Chenghao Wu, Jian Hao, Mingbo Wu
목차
Abstract
1 Introduction
2 Experimental
2.1 Materials and reagents
2.2 Synthesis of carbon materials
2.3 Materials characterization
2.4 Electrochemical measurements
2.5 Analysis of products
3 Results and discussion
4 Conclusion
Acknowledgements
References
영어 초록
Electrochemical reduction of carbon dioxide to valuable chemicals is a promising way of storing renewable energy through electric-to-chemical energy conversion, while its large-scale application is in urgent need of cheap and high-performance catalysts. Herein, we invent a convenient method to synthesize N-doped porous carbon by ammonia etching the pyrolysis carbon of petroleum pitch. We found the ammonia etching treatment not only increase the pyridinic-N content, but also enlarge the specific surface area of the petroleum pitch-based porous carbon. As a cheap and easily available catalyst for carbon dioxide electroreduction, up to 82% of Faradaic efficiency towards carbon monoxide was obtained at − 0.9 V vs the reversible hydrogen electrode in 0.1 M KHCO3. After a long time electrocatalysis of more than 20 h, the Faradaic efficiency of carbon monoxide remains 80%, indicating the porous carbon as made have an ultra-high stability as catalyst for carbon dioxide reduction. Our work provides a new technology to economically prepare efficient electrocatalysts for carbon dioxide reduction.
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