Temperature swing for CO2 capture driven by radiative cooling and solar heating

被引：0

作者：

Dang Y. ^{[1
]}

Tan P. ^{[1
]}

Liu X. ^{[1
]}

Sun L. ^{[1
]}

机构：

[1] State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Jiangsu, Nanjing

来源：

Huagong Xuebao/CIESC Journal | 2023年 / 74卷 / 01期

关键词：

adsorption; CO[!sub]2[!/sub] capture; N-doped porous carbon; radiative cooling; solar energy;

D O I：

10.11949/0438-1157.20221078

中图分类号：

学科分类号：

摘要：

Temperature-swing adsorption is an effective technique for CO2 capture, but the temperature swing procedure is energy-intensive, especially the heating and cooling processes. The low-energy-consumption temperature-swing system is realized by using polypyrrole-based nitrogen-doped porous carbon PPy-650 which combines passive radiative cooling and solar heating. During the adsorption process, the adsorbent layer is coated with a layer of hierarchically porous poly (vinylidene fluoride-co-hexafluoropropene) [P(VdF-HFP)HP], which can cool the adsorbents to a sub-ambient temperature under sunlight through radiative cooling. For desorption, PPy-650 with excellent photothermal conversion ability is exposed to light irradiation for heating. The heating and cooling process is driven entirely by solar energy without any energy input. The regeneration of PPy-650 was investigated by means of adsorption-desorption cycles carried out at 700 W/m2. The results demonstrate that PPy-650 has a good CO2 working capacity (35.69 cm3/g) in this temperature-swing adsorption system, the adsorption capacity of PPy-650 did not decrease. © 2023 Chemical Industry Press. All rights reserved.

引用

页码：469 / 478

页数：9

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