Article

Achieving High Proton Conductivity in MIL-91(Al) Aerogel

Huan WuInstitute of Functional Porous Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. ChinaJunchao JiaInstitute of Functional Porous Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. ChinaXiaomin LiInstitute of Functional Porous Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. ChinaAziz B. IbragimovInstitute of General and Inorganic Chemistry, Uzbekistan Academy of Sciences, M. Ulugbek Strasse 77a, Tashkent 100170, UzbekistanHaotian GaoInstitute of Functional Porous Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. ChinaJunkuo GaoInstitute of Functional Porous Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China

Inorganic Chemistryjournal2024en

ABI

Abstract

The processability and sustainability of proton conductors are two important indicators of their application. Here, MIL-91(Al) with an intrinsic proton conduction framework originating from protonated phosphonate groups was cross-linked with poly(vinyl alcohol) (PVA) to obtain MIL-91(Al) aerogel through freeze-drying. This simple and inexpensive strategy not only facilitated the processing of MIL-91(Al) powder but also resulted in a molded MIL-91(Al) aerogel having a high proton conductivity of 1.02 × 10–2 S cm–1 at 70 °C and 100% relative humidity. Furthermore, MIL-91(Al) aerogel was recyclable and reusable, in line with the principles of environmental protection and sustainability. To the best of our knowledge, this is the first example of using a metal–organic framework aerogel as a proton conductor, which may develop a new model system in this field.

Topics

Metal-Organic Frameworks: Synthesis and Applications Inorganic Fluorides and Related Compounds Covalent Organic Framework Applications

Identifiers

DOI: 10.1021/acs.inorgchem.4c00388

Citations and references

Cited by 048 references

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