系统调整和多功能化共价有机聚合物用于增强碳捕获
Zhonghua Xiang1, Rocio Mercado2, Johanna M Huck3
1State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology , Beijing 100029, P.R. China.
Journal of the American Chemical Society
|September 29, 2015
概括
研究人员开发了具有可调节多孔性和多个功能组的新型多孔共价有机聚合物 (COP). 这些多功能COP显示了碳捕获的选择性和较低的能源成本,为材料科学开辟了新的途径.
科学领域:
- 材料科学
- 聚合物化学
- 纳米技术
背景情况:
- 由于其高表面积和稳定性,多孔共价有机聚合物 (COP) 具有显著的气体吸附,分离和催化潜力.
- 精确控制特定应用的多孔有机材料的孔隙性和功能性是一个关键挑战.
研究的目的:
- 通过将多个功能纳入一个框架来实现COP多孔性的策略.
- 综合和描述新型的COP,以提高性能.
主要方法:
- 通过调整构件长度和几何形状来合成17种新型多孔共价有机聚合物 (COP).
- 将多个不同的功能组纳入单一的COP阶段,这是多孔有机材料的首次.
- Brunauer-Emmett-Teller (BET) 特定表面积和孔隙体积的表征
主要成果:
- 合成的COP具有广泛的BET表面积 (430-3624 m2/g) 和孔径 (0.24-3.50 cm3/g).
- 与单个功能化的对应物相比,多功能化的COP对CO2的选择性是两倍的.
- 这些多功能框架显示了碳捕获应用的寄生性能源成本降低.
结论:
- 通过量身定制构件并结合多种功能,可以微调COP的孔隙性和性能.
- 多功能化显著提高了气体分离和碳捕获的性能.
- 这一战略为设计先进的催化剂,传感器和改进的COP铺平了道路.
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