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Light to enhance CO2 capture by a flexible heterostructure
Chemical Engineering and Processing: Process Intensification ( IF 3.8 ) Pub Date : 2020-11-04 , DOI: 10.1016/j.cep.2020.108210
Yunsong Yu , Chen Zhang , Maimoona Sharif , Zaoxiao Zhang , Jinjia Wei , Geoff G.X. Wang

Based on photovoltaic effect and annealing,a flexible liquid-solid heterostructure of PANI and PyBIG based on carbon nano-tube (CNT) is prepared to drive the low temperature (343 K-363 K) CO2 desorption intensified by the light. By the DFT and experiment, the reaction mechanism is determined as electron and hole produced by the light, deprotonization, electron and hole transport, and CO2 release. The flexible characteristic of the heterostructure is identified as interface slip, transport channel change and stretching phenomenon in the nano-scale. The repelling effect between water molecule and oil molecule enhances the -COO-H bond breaking and -NH2 production. The stretching phenomenon makes the electron and hole transport along the line rather than in a circle. The CO2 desorption reaction energy is determined as low as 11.42 kJ/mol. The energy consumption of heterostructure to drive the CO2 desorption at 343 K-363 K is determined as 0.89 GJ/t-1.12 GJ/t, which is much lower than the conventional 2.2 GJ/t-2.8 GJ/t.



中文翻译:

通过柔性异质结构增强CO 2捕集的光

基于光伏效应和退火,制备了基于碳纳米管(CNT)的PANI和PyBIG的柔性液固异质结构,以驱动由光增强的低温(343 K-363 K)CO 2解吸。通过DFT和实验,反应机理被确定为由光,去质子化,电子和空穴传输以及CO 2释放产生的电子和空穴。异质结构的柔性特征被识别为纳米级的界面滑移,传输通道变化和拉伸现象。水分子和油分子之间的排斥作用增强了-COO-H键的断裂和-NH 2生产。拉伸现象使电子和空穴沿着线而不是圆形传输。测定的CO 2解吸反应能低至11.42kJ / mol。确定在343 K-363 K下驱动CO 2解吸的异质结构的能量消耗为0.89 GJ / t-1.12 GJ / t,远低于传统的2.2 GJ / t-2.8 GJ / t。

更新日期:2020-11-04
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