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Cai K, Yu J, Tan W, Gao C, Zhao Z, Yuan S, Cheng J, Yang Y, Yuan Y. The Incorporation of Sulfonated PAF Enhances the Proton Conductivity of Nafion Membranes at High Temperatures. Polymers (Basel) 2024; 16:2208. [PMID: 39125234 PMCID: PMC11314880 DOI: 10.3390/polym16152208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 07/02/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024] Open
Abstract
Nafion membranes are widely used as proton exchange membranes, but their proton conductivity deteriorates in high-temperature environments due to the loss of water molecules. To address this challenge, we propose the utilization of porous aromatic frameworks (PAFs) as a potential solution. PAFs exhibit remarkable characteristics, such as a high specific surface area and porosity, and their porous channels can be post-synthesized. Here, a novel approach was employed to synthesize a PAF material, designated as PAF-45D, which exhibits a specific surface area of 1571.9 m2·g-1 and possesses the added benefits of facile synthesis and a low cost. Subsequently, sulfonation treatment was applied to PAF-45D in order to introduce sulfonic acid groups into its pores, resulting in the formation of PAF-45DS. The successful incorporation of sulfonic groups was confirmed through TG, IR, and EDS analyses. Furthermore, a novel Nafion composite membrane was prepared by incorporating PAF-45DS. The Nyquist plot of the composite membranes demonstrates that the sulfonated PAF-45DS material can enhance the proton conductivity of Nafion membranes at high temperatures. Specifically, under identical film formation conditions, doping with a 4% mass fraction of PAF-45DS, the conductivity of the Nafion composite membrane increased remarkably from 2.25 × 10-3 S·cm-1 to 5.67 × 10-3 S·cm-1, nearly 2.5 times higher. Such promising and cost-effective materials could be envisioned for application in the field of Nafion composite membranes.
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Affiliation(s)
- Kun Cai
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, China; (J.Y.); (W.T.); (C.G.); (S.Y.); (J.C.)
| | - Jinzhu Yu
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, China; (J.Y.); (W.T.); (C.G.); (S.Y.); (J.C.)
| | - Wenjun Tan
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, China; (J.Y.); (W.T.); (C.G.); (S.Y.); (J.C.)
| | - Cong Gao
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, China; (J.Y.); (W.T.); (C.G.); (S.Y.); (J.C.)
| | - Zili Zhao
- XuJue Electric Co., Ltd., Xuchang 461000, China;
| | - Suxin Yuan
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, China; (J.Y.); (W.T.); (C.G.); (S.Y.); (J.C.)
| | - Jinghui Cheng
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, China; (J.Y.); (W.T.); (C.G.); (S.Y.); (J.C.)
| | - Yajie Yang
- Key Laboratory of Automobile Materials of Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Ye Yuan
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Changchun 130024, China;
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Yuan Y, Zhang S, Duan K, Xu Y, Guo K, Chen C, Chaemchuen S, Cao D, Verpoort F. Multifunctional Biomass-Based Ionic Liquids/CuCl-Catalyzed CO 2-Promoted Hydration of Propargylic Alcohols: A Green Synthesis of α-Hydroxy Ketones. Int J Mol Sci 2024; 25:1937. [PMID: 38339215 PMCID: PMC10856482 DOI: 10.3390/ijms25031937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 01/31/2024] [Accepted: 02/03/2024] [Indexed: 02/12/2024] Open
Abstract
α-Hydroxy ketones are a class of vital organic skeletons that generally exist in a variety of natural products and high-value chemicals. However, the traditional synthetic route for their production involves toxic Hg salts and corrosive H2SO4 as catalysts, resulting in harsh conditions and the undesired side reaction of Meyer-Schuster rearrangement. In this study, CO2-promoted hydration of propargylic alcohols was achieved for the synthesis of various α-hydroxy ketones. Notably, this process was catalyzed using an environmentally friendly and cost-effective biomass-based ionic liquids/CuCl system, which effectively eliminated the side reaction. The ionic liquids utilized in this system are derived from natural biomass materials, which exhibited recyclability and catalytic activity under 1 bar of CO2 pressure without volatile organic solvents or additives. Evaluation of the green metrics revealed the superiority of this CuCl/ionic liquid system in terms of environmental sustainability. Further mechanistic investigation attributed the excellent performance to the ionic liquid component, which exhibited multifunctionality in activating substrates, CO2 and the Cu component.
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Affiliation(s)
- Ye Yuan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China; (Y.Y.); (C.C.); (S.C.); (D.C.)
- School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (S.Z.); (K.D.); (Y.X.); (K.G.)
| | - Siqi Zhang
- School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (S.Z.); (K.D.); (Y.X.); (K.G.)
| | - Kang Duan
- School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (S.Z.); (K.D.); (Y.X.); (K.G.)
| | - Yong Xu
- School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (S.Z.); (K.D.); (Y.X.); (K.G.)
| | - Kaixuan Guo
- School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (S.Z.); (K.D.); (Y.X.); (K.G.)
| | - Cheng Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China; (Y.Y.); (C.C.); (S.C.); (D.C.)
- School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (S.Z.); (K.D.); (Y.X.); (K.G.)
| | - Somboon Chaemchuen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China; (Y.Y.); (C.C.); (S.C.); (D.C.)
- School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (S.Z.); (K.D.); (Y.X.); (K.G.)
| | - Dongfeng Cao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China; (Y.Y.); (C.C.); (S.C.); (D.C.)
- School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (S.Z.); (K.D.); (Y.X.); (K.G.)
| | - Francis Verpoort
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China; (Y.Y.); (C.C.); (S.C.); (D.C.)
- School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (S.Z.); (K.D.); (Y.X.); (K.G.)
- Research School of Chemical and Biomedical Technologies, National Research Tomsk Polytechnic University, Lenin Avenue 30, 634050 Tomsk, Russia
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Yang Y, Li Y, Zhang Z, Chen K, Luo R. In Situ Anchoring of Small-Sized Silver Nanoparticles on Porphyrinic Triazine-Based Frameworks for the Conversion of CO 2 into α-Alkylidene Cyclic Carbonates with Outstanding Catalytic Activities under Ambient Conditions. ACS APPLIED MATERIALS & INTERFACES 2024; 16:411-424. [PMID: 38117660 DOI: 10.1021/acsami.3c10521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
The preparation of catalytic hybrid materials by introducing highly dispersed metallic nanoparticles into porous organic polymers (POPs) may be an ideal and promising strategy for integrated CO2 capture and conversion. In terms of the carboxylative cyclization of propargyl alcohols with CO2, the anchoring of silver nanoparticles (AgNPs) on functional POPs to fabricate efficient heterogeneous catalysts is considered to be quite intriguing but remains challenging. In the contribution, well-dispersed AgNPs were successfully anchored onto the porphyrinic triazine-based frameworks by a simple "liquid impregnation and in situ reduction" strategy. The presence of N-rich dual active sites, porphyrin and triazine, which acted as the electron donor and acceptor, respectively, offered a huge opportunity for the nucleation and growth of metal nanoparticles. Significantly, the as-prepared catalyst Ag/TPP-CTF shows excellent catalytic activity (up to 99%) toward the carboxylative cyclization of propargyl alcohols with CO2 at room temperature, achieving record-breaking activities (TOF up to 615 h-1 at 1 bar and 3077 h-1 at 10 bar). Moreover, the catalyst can be easily recovered and reused at least 10 times with retention of high catalytic activity. The possible mechanism involves small-sized AgNP-mediated alkyne activation, which may promote highly efficient and green conversion of CO2. This work paves the way for immobilizing metal nanoparticles onto functional POPs by surface structure changes for enhanced CO2 catalysis.
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Affiliation(s)
- Yiying Yang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
| | - Yingyin Li
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
| | - Zixuan Zhang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
| | - Kechi Chen
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
| | - Rongchang Luo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
- Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory (Rongjiang Laboratory), 515200 Jieyang, China
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An Azo-Group-Functionalized Porous Aromatic Framework for Achieving Highly Efficient Capture of Iodine. Molecules 2022; 27:molecules27196297. [PMID: 36234834 PMCID: PMC9572897 DOI: 10.3390/molecules27196297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
The strong radioactivity of iodine compounds derived from nuclear power plant wastes has motivated the development of highly efficient adsorbents. Porous aromatic frameworks (PAFs) have attracted much attention due to their low density and diverse structure. In this work, an azo group containing PAF solid, denoted as LNU-58, was prepared through Suzuki polymerization of tris-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-phenyl)-amine and 3,5-dibromoazobenzene building monomers. Based on the specific polarity properities of the azo groups, the electron-rich aromatic fragments in the hierarchical architecture efficiently capture iodine molecules with an adsorption capacity of 3533.11 mg g−1 (353 wt%) for gaseous iodine and 903.6 mg g−1 (90 wt%) for dissolved iodine. The iodine uptake per specific surface area up to 8.55 wt% m−2 g−1 achieves the highest level among all porous adsorbents. This work illustrates the successful preparation of a new type of porous adsorbent that is expected to be applied in the field of practical iodine adsorption.
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