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Zhao L, Wang S, Li Z, Jiang Y, Liu X, Ouyang H, Xiong Z, Guo Y, Li Y, Lei Y. Ultra-stable hollow nanotube conjugated microporous polymer incorporating fluorenyl moieties for Co-capture of PM and CO 2. J Hazard Mater 2024; 468:133826. [PMID: 38377916 DOI: 10.1016/j.jhazmat.2024.133826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 01/30/2024] [Accepted: 02/16/2024] [Indexed: 02/22/2024]
Abstract
Conjugated microporous polymers have a highly delocalized π-π conjugated porous skeleton connected by covalent bonds, which can combine their excellent stability with high adsorption, in order to be applied to the study of co-capture of harmful particulate matter (PM) and carbon dioxide (CO2) under high temperature and high humidity conditions. In this paper, fluorene-based coupled conjugated microporous polymers (D-CMPs) with functionalized hollow nanotubes and abundant microporous structures were proposed. Through mechanism exploration and molecular electrostatic potential (MESP) calculation, the capture efficiency, adsorption capacity and selectivity of PM and CO2 in the waste gas stream of carbon-based combustion were analyzed. The results indicate that D-CMPs, with their rigid carbon-based π-conjugated framework, exhibit excellent tolerance under prolonged high-humidity conditions, with a capture efficiency exceeding 99.87% for PM0.3 and exceeding 99.99% for PM2.5. Meanwhile, based on its chemical/thermal stability, it can realize the recycling of adsorption-regeneration. On this basis, the "slip effect" induced by the open three-dimensional hierarchical porous structure of D-CMPs significantly enhances airflow dispersion and improves gas throughput (with a minimal permeation resistance of only 15 Pa). At a pressure of 1 bar and a temperature of 273.15 K, D-CMP-2 exhibited a CO2 adsorption capacity of up to 2.69 mmol g-1. The fitting results of three isothermal adsorption models demonstrate that D-CMPs exhibit an outstanding equilibrium selectivity towards CO2. Therefore, prior to the widespread adoption of low-carbon and clean energy technologies, porous solid materials exhibiting excellent structural stability, equilibrium selectivity, environmental tolerance, and high adsorption capacity emerge as optimal candidates for the treatment of industrial waste gases.
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Affiliation(s)
- Li Zhao
- College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Shaozhen Wang
- College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Zhen Li
- College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Yanli Jiang
- College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Xinrui Liu
- College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Hang Ouyang
- College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Zhengshao Xiong
- College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Yu Guo
- College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Yang Li
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Yang Lei
- College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
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Hao SM, Yu MY, Zhang YJ, Abdelkrim Y, Qu J. Hierarchical mesoporous cobalt silicate architectures as high-performance sulfate-radical-based advanced oxidization catalysts. J Colloid Interface Sci 2019; 545:128-137. [PMID: 30877996 DOI: 10.1016/j.jcis.2019.03.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 03/06/2019] [Accepted: 03/07/2019] [Indexed: 12/27/2022]
Abstract
Self-sacrificial biomass-derived silica is a rising and promising approach to fabricate large metal silicates, which are practical water treatment agents ascribed for easy sedimentation and separation. However, the original biomass architecture is difficult to be maintained and utilized. Furthermore, sufficient ion diffusion pathways need to be created to satisfy massive mass transport in large bulk materials. Herein, a series of metal silicates, including cobalt silicate (CoSiOx), copper silicate, nickel silicate, iron silicate, and magnesium silicate, are synthesized from Indocalamus tessellatus leaf as the biomass-derived silica source and investigated as catalysts in sulfate-radical-based advanced oxidization processes (SR-AOPs) for the first time. Among them, CoSiOx presents an analogical sandwich structure as a leaf-derived template of micron-level size. More importantly, the interior hollow nanotubes assembled by small nanosheets provide numerous pathways for ion diffusion and remarkably promote the mass transport in such large bulk materials. Owing to the combination of the unique structure with the high reactivity of Co (II) toward peroxymonosulfate, CoSiOx exhibits excellent catalytic performance with 0.242 and 0.153 min-1 rate constants for the removal of methylene blue and phenol, respectively, which outperforms/is comparable to that of the reported nanomaterials toward organic contaminants in SR-AOPs.
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Affiliation(s)
- Shu-Meng Hao
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ming-Yuan Yu
- Beijing No. 171 High School, Beijing 100013, China
| | - Yu-Jiao Zhang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yasmine Abdelkrim
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jin Qu
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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