# Catalytic Performance of Flexible Polycationic Membrane Derived from Polyacrylonitrile for Advanced Applications

## TL;DR

A new membrane material was created that efficiently breaks down pollutants using visible light and can be reused multiple times.

## Contribution

The creation of PM-PCM, a first-of-its-kind photocatalyst membrane with high efficiency and recyclability.

## Key findings

- PM-PCM achieved 98% methylene blue degradation under visible light.
- The catalyst retained 98% efficiency after five cycles, showing excellent recyclability.
- The membrane uses solar light as a clean energy source for sustainable environmental applications.

## Abstract

A novel polycationic membrane (PCM) was synthesized by the cyclization of polyacrylonitrile (PAN) with m-ethylene diamine, converting the nitrile groups into pyridine units, followed by quaternization with 1-bromobutane. The resulting PCM was further functionalized by loading the photocatalyst, phosphomolybdic acid (PMo), via anion exchange, forming a new type of photocatalytic material, PM-PCM. Under visible light irradiation, the PM-PCM photocatalyst achieved an impressive methylene blue degradation rate of 98%. Additionally, the nanofiber membrane morphology facilitates the efficient recovery of the catalyst, with 98% of the initial degradation efficiency maintained after five photocatalytic cycles. This robust, highly efficient, and recyclable material provides a new approach for catalyst support. To the best of our knowledge, PM-PCM is the first reported photocatalyst of this kind. This cost-effective, functionalized membrane material utilizes solar light as an economical and clean energy source, offering promising potential for sustainable environmental applications.