Rapid Adsorption of Indoor Low-Concentration Formaldehyde by β‑Cyclodextrin-Based Porous Organic Polymers

Rapid Adsorption of Indoor Low-Concentration Formaldehyde by β‑Cyclodextrin-Based Porous Organic Polymers

Formaldehyde (HCHO) is one of the most universal and harmful indoor gas pollutants nowadays. Even a very low concentration of HCHO does great harm to human health. Herein, we developed a kind of porous organic polymer (P-CDP) as an adsorbent for the rapid removal of HCHO. The adsorption capacity of...

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Veröffentlicht in:Industrial & engineering chemistry research 2022-08, Vol.61 (30), p.11148-11155
Hauptverfasser: Yao, Jinze, Zhang, Xinyu, Lv, Daofei, Huang, Jiajin, Wu, Xingbei, Wu, Ying, Wu, Junliang, Ye, Daiqi, Xia, Qibin
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container_end_page 11155
container_issue 30
container_start_page 11148
container_title Industrial & engineering chemistry research
container_volume 61
creator Yao, Jinze
Zhang, Xinyu
Lv, Daofei
Huang, Jiajin
Wu, Xingbei
Wu, Ying
Wu, Junliang
Ye, Daiqi
Xia, Qibin
description Formaldehyde (HCHO) is one of the most universal and harmful indoor gas pollutants nowadays. Even a very low concentration of HCHO does great harm to human health. Herein, we developed a kind of porous organic polymer (P-CDP) as an adsorbent for the rapid removal of HCHO. The adsorption capacity of HCHO on P-CDP is 2.78 mg g–1 and the average adsorption rate in 10 min is 0.18 mg g–1 min–1 at a HCHO concentration of 1 ppm, which are 4.06 and 9.11 times higher than those of commercial coconut shell activated carbon (ACCO), respectively. The partition coefficient (PC) of P-CDP reaches 0.93 mol kg–1 Pa–1. More importantly, P-CDP shows excellent reusability, with no obvious loss of HCHO uptake after five adsorption–desorption cycles, indicating the good cycling stability of P-CDP. The high adsorption uptake and rapid adsorption rate of P-CDP for HCHO are attributed to the relatively strong electrostatic interactions together with the van der Waals forces between −F and −OH groups on P-CDP and HCHO molecules. This study demonstrates the great potential of P-CDP for practical use in the removal of low-concentration HCHO in indoor environments.
doi_str_mv 10.1021/acs.iecr.2c01721
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title Rapid Adsorption of Indoor Low-Concentration Formaldehyde by β‑Cyclodextrin-Based Porous Organic Polymers
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