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ORIGINAL RESEARCH article
Front. Mater.
Sec. Polymeric and Composite Materials
Volume 12 - 2025 |
doi: 10.3389/fmats.2025.1552100
ZIF-8/PLA Porous Composite Microspheres: Preparation, Characterization, and Effective Removal of Gaseous Benzene
Provisionally accepted
Jiali Li 1
Peijian Sun 1* Yipeng Wang 1* Xuehui Sun 1* Bin Peng 1* Weili Xu 1* Mengmeng Liu 2* Cong Nie 1*- 1 Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
- 2 Jiangsu China Tobacco Industrial Co., Ltd., Xuzhou, Jiangsu Province, China
A series of porous microspheres of zeolitic imidazolate framework-8/polylactic acid (ZIF-8/PLA) were prepared via the double emulsion-solvent evaporation method with ammonium bicarbonate as the foaming agent. These microspheres exhibited an interconnected porous network structure with high surface area, which is beneficial for the fast gas diffusion and effective adsorption, particularly suitable for complex environments with high gas flow rates. The structures of microspheres were adjusted by varying the microspheres fabrication parameters, such as ZIF-8/PLA ratio, PLA concentration, water to oil (W1/O) ratio, and solvent evaporation temperature. The adsorption of gaseous benzene by these ZIF-8/PLA microspheres was evaluated both in flowing benzene vapor and in cigarette smoke. The adsorption capacity of gaseous benzene on these ZIF-8/PLA microspheres is as high as 77-238 mg• g -1 and 18-44% of benzene can be removed from the cigarette smoke by using these ZIF-8/PLA microspheres as absorbents due to the interconnected hierarchical porous network benefiting the fast gas diffusion and the strong π-π stacking interactions of ZIF-8 towards aromatic hydrocarbons, showing the great potential of these ZIF-8/PLA microspheres as adsorbents for efficient removal of gaseous benzene.
Keywords: Metal-Organic Frameworks, Zeolitic imidazolate framework-8, Poly lactic acid, Composite microspheres, porous material, Adsorbents, Benzene removal
Received: 27 Dec 2024; Accepted: 20 Jan 2025.
Copyright: © 2025 Li, Sun, Wang, Sun, Peng, Xu, Liu and Nie. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Peijian Sun, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
Yipeng Wang, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
Xuehui Sun, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
Bin Peng, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
Weili Xu, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
Mengmeng Liu, Jiangsu China Tobacco Industrial Co., Ltd., Xuzhou, Jiangsu Province, China
Cong Nie, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
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