Low-energy-consumption temperature swing system for CO_(2) capture by combining passive radiative cooling and solar heating  

作　　者：Ying-Xi Dang Peng Tan Bin Hu Chen Gu Xiao-Qin Liu Lin-Bing Sun 

机构地区：[1]State Key Laboratory of Materials-Oriented Chemical Engineering,Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM),College of Chemical Engineering,Nanjing Tech University,Nanjing,211816,China

出　　处：《Green Energy & Environment》2024年第3期507-515,共9页绿色能源与环境（英文版）

基　　金：supported by the National Science Fund for Distinguished Young Scholars(22125804);the National Natural Science Foundation of China(21808110,22078155,and 21878149).

摘　　要：Temperature-swing adsorption(TSA)is an effective technique for CO_(2) capture,but the temperature swing procedure is energy-intensive.Herein,we report a low-energy-consumption system by combining passive radiative cooling and solar heating for the uptake of CO_(2) on commercial activated carbons(CACs).During adsorption,the adsorbents are coated with a layer of hierarchically porous poly(vinylidene fluoride-co-hexafluoropropene)[P(VdF-HFP)HP],which cools the adsorbents to a low temperature under sunlight through radiative cooling.For desorption,CACs with broad absorption of the solar spectrum are exposed to light irradiation for heating.The heating and cooling processes are completely driven by solar energy.Adsorption tests under mimicked sunlight using the CACs show that the performance of this system is comparable to that of the traditional ones.Furthermore,under real sunlight irradiation,the adsorption capacity of the CACs can be well maintained after multiple cycles.The present work may inspire the development of new temperature swing procedures with little energy consumption.

关 键 词：CO_(2)capture Solar heating Passive radiative cooling Temperature swing adsorption 

分 类 号：X701[环境科学与工程—环境工程]