Catalytic Performance of Flexible Polycationic Membrane Derived from Polyacrylonitrile for Advanced Applications
Yue Gao, Xuan Qi, Junfeng Zhang
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.
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.…
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Taxonomy
TopicsMembrane Separation Technologies · Carbon dioxide utilization in catalysis · Advanced Battery Materials and Technologies