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Published in: Journal of Materials Science 27/2022

05-07-2022 | Chemical routes to materials

Copper containing 3D polyaniline/phytic acid hydrogels for photocatalytic hydrogen production

Authors: Xueling Pan, Sheng Wu, Tingting Wang, Gary Histand, Yingwei Li

Published in: Journal of Materials Science | Issue 27/2022

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Abstract

A Cu-PP hydrogel with 3D network was synthesized using a simple in-situ polymerization method. PA (phytic acid) acts as the dopants and crosslinking agent to form PANI-PA (polyaniline-phytic acid) hydrogel via in-situ polymerization of aniline. PA is also used as a chelating agent to coordinate with Cu2+ ion due to the high coordination capacity. When irradiated by light, Cu2+ was slowly reduced to form Cu NPs, distributing uniformly in the 3D matrix of PANI-PA. The 3D network nanostructure ensures a complete contact between the photocatalyst and water, promoting the separation of electrons and holes. The introduction of PANI-PA improves the separation efficiency of electron-hole pairs, where PANI-PA acts as a hole reservoir to trap the holes generated by Cu NPs, hindering the recombination of electron-hole pairs. The Cu0.2-PP hydrogel with a copper content of 30.8% exhibits the best hydrogen production rate (6.09 mmol·g−1·h−1), which is 6.7 times greater than that of pure Cu NPs.

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Appendix
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Metadata
Title
Copper containing 3D polyaniline/phytic acid hydrogels for photocatalytic hydrogen production
Authors
Xueling Pan
Sheng Wu
Tingting Wang
Gary Histand
Yingwei Li
Publication date
05-07-2022
Publisher
Springer US
Published in
Journal of Materials Science / Issue 27/2022
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-022-07424-0

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