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Updated: Aug 1, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

聚合物衍生和Ni-单个原子合的碳纳米纤维用于CO2捕获和电还原到CO

S Shilpa¹, Fanshu Yuan^2,3, Zhengyuan Li⁴

¹Department of Sustainable Energy Engineering, Indian Institute of Technology Kanpur, Uttar Pradesh, 208016, India.

|September 15, 2025

概括

碳纳米纤维 (CNFs) 在二氧化碳捕获和转化方面表现有前途. 优化的CNF表现出高的二氧化碳吸附,从中衍生出的单原子催化剂实现了高效的电催化二氧化碳降解到CO.

科学领域:

材料科学材料科学材料科学
催化剂是一种催化剂.
环境科学环境科学

背景情况:

碳纳米纤维 (CNFs) 具有独特的特性,如高表面积和可调节的多孔性,使其适用于二氧化碳的捕获和转化.
具有金属--碳基因的单原子催化剂 (SAC) 由于其高原子效率和独特的活性点,对电催化 CO2 减少 (eCO2R) 有效.

研究的目的:

从不同的聚合物中合成多孔CNF用于二氧化碳捕获.
开发和研究含多的含单原子的CNF (Ni-N-CNF SACs),用于电催化 CO2 降解为 CO.

主要方法:

从细菌纤维素,阿拉米德和锡龙中合成多孔CNF的最佳合成.
在环境和高压下进行二氧化碳吸附测量.
在N-doped CNF (N-CBC) 上合成Ni-SACs.
使用扩展X射线吸收细结构 (EXAFS) 和显微镜研究进行了表征.
密度函数理论 (DFT) 的计算.
电催化二氧化碳减排 (eCO2R) 性能评估.

主要成果:

阿拉米德衍生CNF表现出最高的二氧化碳吸附能力 (≈4mmolg-1在1Bar,273K).
单个Ni原子成功地在N-doped碳化细菌纤维素 (N-CBC) 上与Ni-N4协调定.
由此产生的Ni-N-CBC SACs对eCO2R到CO具有很高的选择性和耐用性,在 -0.53V与RHE时达到94%±3%的法拉第效率 (FECO).
对于Ni-N-CBC催化剂,记录了35.26s-1的高周转频率 (TOF).

结论:

来自各种聚合物的多孔CNF对于二氧化碳捕获是有效的,而阿拉米德-CNF表现出更优异的性能.
Ni-N-CNF SAC,特别是Ni-N-CBC,是高效和耐用的电催化剂,用于二氧化碳转化为二氧化碳.
这项研究强调了CNF在开发用于可持续二氧化碳捕获和利用的先进材料方面的巨大潜力.

关键词:

Ni 单个原子催化剂亚拉米德亚拉米德是一种细菌纤维素的细菌纤维素.碳纳米纤维的碳纳米纤维电催化减少二氧化碳的方法锡龙的锡龙是什么意思

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