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在玻璃碳上由mercaptopteridine催化的二氧化碳减少

Dongmei Xiang¹, Donny Magana, R Brian Dyer

¹Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States.

Journal of the American Chemical Society

|September 27, 2014

概括

一种新型的烯电催化剂 (PTE) 有效地减少二氧化碳 (CO2) 和酸. 这种无金属催化剂从二氧化碳中产生甲醇,提供可持续的能源解决方案.

科学领域:

电化学电化学电化学
催化剂是一种催化剂.
绿色化学绿色化学

背景情况:

减少二氧化碳 (CO2) 对减缓气候变化和能源可持续性至关重要.
氨酸是具有氧化还原媒介和C1载体功能的天然辅助因子,作为电催化剂尚未被探索.
开发高效和可持续的二氧化碳减排催化剂是一个重大的科学挑战.

研究的目的:

为了研究一种氨酸衍生物的电催化活性,6,7-二甲基-4-氧-2-mercaptopteridine (PTE),用于减少二氧化碳.
探索蛋白作为能量转换的无金属电催化剂的潜力.
为了确定由PTE催化二氧化碳电还原过程中形成的还原产品和中间体.

主要方法:

使用PTE修改的玻璃碳电极进行电催化.
二氧化碳和溶液的散装电解.
通过气体染色学和13C核磁共振光谱学进行产品分析.
在现场FTIR光谱电化学检测中间体和反应途径.

主要成果:

PTE有效地催化了二氧化碳和酸的电化学降解.
甲醇是通过减少二氧化碳而产生的,法拉第克效率为10-23%.
FTIR分析显示,甲酸盐,甲和甲醇是两电子还原产品,以及一个暂定的PTE碳酸盐中间体.

结论:

氨酸可以有效地用作减少二氧化碳的无金属电催化剂.
在低超电位下,PTE表现出催化活性,为二氧化碳利用提供了一个有前途的途径.
这项研究突出了自然辅助因子在开发能源应用可持续催化系统方面的潜力.

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