具有超大孔的三维共价有机框架,用于高效光催化
Jiehua Ding1, Xinyu Guan2, Jia Lv3
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, P. R. China.
Journal of the American Chemical Society
|January 31, 2023
概括
合成了具有大孔的新型三维 (3D) 共价有机框架 (COF). JUC-640-Co有效地将二氧化碳转化为二氧化碳,其性能优于现有的COF材料.
科学领域:
- 材料科学
- 化学学
- 纳米技术
背景情况:
- 三维 (3D) 大孔共价有机框架 (COF) 提供高表面积和相互连接的通道,用于实际应用.
- 这些先进的COF材料的功能化策略和应用研究目前是有限的.
研究的目的:
- 设计和合成基于氨酸或金属氨酸的新功能3DCOF.
- 探索这些新型COF材料的性能和潜在应用,特别是减少二氧化碳排放.
主要方法:
- 一系列3Dstp拓化COF的设计和合成,命名为JUC-640-M (M=Co,Ni或H).
- 结构性质的描述,包括晶体密度,孔径大小和表面积.
- 评估JUC-640-Co用于二氧化碳的光降解,评估生产率,选择性和稳定性.
主要成果:
- 在3DCOF中,JUC-640-H具有创纪录的低晶体密度 (0.106 cm3 g-1),最大孔径 (4.6 nm),高表面积 (2204 m2 g-1),以及丰富的暴露素部分 (0.845 mmol g-1).
- JUC-640-Co 显示出高的二氧化碳生成率 (15. 1 mmol g-1 h-1),选择性 (94. 4%) 和二氧化碳转化为二氧化碳的稳定性.
- JUC-640-Co的碳化合物生产率超过了之前报告的所有基于碳化合物的材料.
结论:
- 一系列具有大型互连通道的新型3DCOF已成功合成.
- 开发的COF显示出在CO2光降低等领域的功能化和应用的巨大潜力.
- 这项研究为先进的COF材料的开发和应用提供了新的指导.
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