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Zero-Carbon Emission Chemical Method to Remove Formaldehyde without Catalyst by Highly Porous Polymer Composites at Room Temperature

journal contribution
posted on 24.11.2022, 05:42 authored by Lei Wang, Zhen Liu, Aihua Li, Jiayan Pu, Zihao Wang, Tao Chen, Degang JiangDegang Jiang, Wenrong YangWenrong Yang, Yanzhi Xia, Jingquan Liu
Herein, the fabrication of reduced graphene oxide (RGO)-templated polymer composites for chemical removal of gaseous formaldehyde under ambient conditions is presented. The chemical removal of formaldehyde is achieved by a nucleophilic addition reaction between formaldehyde and aminooxy groups on the polymer chain ends to form the oxime bonds with the only byproduct of H2O. RGO is essential since it not only has an ultralarge surface area but also can act as a perfect template for immobilizing pyrene-terminated and aminooxy-functionalized polymers via strong π–π stacking interactions, while melamine foam provides a three-dimensional skeleton for loading RGO/polymer composites to afford a porous 3D structure for efficient formaldehyde removal. Since the oxime bond can be cleaved into aminooxy group in acidic media, the RGO/polymer composite can be regenerated for repeatable usage, which shows an excellent performance of adsorbing 14 mg of formaldehyde by 100 mg of the polymer at ambient condition.

History

Journal

Macromolecular Rapid Communications

Location

London, Eng.

ISSN

1022-1336

eISSN

1521-3927

Language

English

Publication classification

C1 Refereed article in a scholarly journal

Publisher

Wiley