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生物模拟接口与动态二硫化物键增强稀释CO2的持久光转换

Ruijin Zeng¹, Chenglong Sun¹, Zheng Lin¹

¹School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China.

Journal of the American Chemical Society

|October 10, 2025

概括

研究人员开发了具有动态二硫化物键的新的共价有机框架 (COF). 这些材料利用太阳能有效地将二氧化碳 (CO2) 转化为有价值的化学物质,显示出更好的稳定性和性能.

科学领域:

材料科学
催化剂
可再生能源

背景情况:

对于太阳能驱动的二氧化碳转化,共价有机框架 (COF) 是有前途的.
刚性COF结构限制了催化剂的集成和电荷转移,降低了效率和耐用性.
在使用稀释二氧化碳来生产燃料方面存在挑战.

研究的目的:

为适应性催化剂定设计具有动态二硫化物键的COF.
增强界面电子连贯性,以改善光催化二氧化碳的转化.
提高太阳能驱动二氧化碳减排的效率和稳定性.

主要方法:

将动态二硫化物键纳入COF结构.
[Co(bpy) 3+分子催化剂的整合.
进行光谱和理论分析以了解电荷转移机制.
在模拟烟气下的流式光催化微反应器中进行测试.

主要成果:

富含硫化物TFBP-APDS的COF可达到10.6 mmolg-1h-1的CO演变速率,具有94.5%的选择性.
性能明显高 (2. 4 倍) 于无硫化物类型.
动态二硫化物链接促进了自适应性Co-S相互作用,并增强了界面电子合.
在15%的CO2下实现了300小时的稳定运行.

结论:

在COF中使用动态二硫化物键的仿生策略增强了二氧化碳的光催化转化.
适应性催化剂定和改进的电荷转移导致更高的效率和稳定性.
开发的COF显示了在转换工业CO2排放中的实际应用潜力.

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