Nano-redispersible metal-oxide–ionomer composite nanopowders prepared using perfluorinated sulfonic acid ionomers in anion-exchange membrane and their radical scavenging performance

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发表日期：

2024年1月29日

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Manh Linh Le,
Mobina Irshad,
Thu Thuy Duong,
Myung Hyun Park,
Chang Hyun Lee,
Juyoung Kim

摘要

New strategies for overcoming the chemical degradation of anion-exchange membranes (AEM) containing perfluoroquaternary ammonium (PFQA) ionomer using inorganic free radical scavengers are described. To be more specific, the metal-oxide–perfluorinated sulfonic acid ionomer (MO–PFSA) composite nanoparticles were synthesized and investigated their nano-redispersibility after redispersing in the PFQA solution. The effect of the PFSA equivalent weight (EW) and metal precursor selection, and nano-redispersibility of MO_x composite nanoparticles in the PFQA solution were also investigated. It was reported that MO_x composite nanoparticles prepared using cerium nitrate precursor showed the best radical scavenging performance in the presence of EW800 PFSA solution compared to other MO–PFSA composite nanoparticles.

Graphical abstract

Mechanism of nano-redispersion of the metal-oxide–perfluorinated sulfonic acid ionomer (MO–PFSA) composite nanopowders in perfluoroquaternary ammonium (PFQA) solution