Preparation of doped polypyrrole composites as effective chromium ion absorbents

A novel Co3O4‐ and AgCl‐doped three‐dimensional architectures polypyrrole (PPy/Co3O4/AgCl) composite was demonstrated as an excellent adsorbent to remove chromium effectively by an in situ oxidation polymerization using FeCl3 as the oxidant. The achieved adsorption capacity was 69.9 mg g−1. The as‐s...

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Published in:Polymer composites 2018-12, Vol.39 (12), p.4416-4424
Main Authors: Zhou, Yanqing, Sun, Wanhong
Format: Article
Language:English
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Summary:A novel Co3O4‐ and AgCl‐doped three‐dimensional architectures polypyrrole (PPy/Co3O4/AgCl) composite was demonstrated as an excellent adsorbent to remove chromium effectively by an in situ oxidation polymerization using FeCl3 as the oxidant. The achieved adsorption capacity was 69.9 mg g−1. The as‐synthesized PPy/Co3O4/AgCl composite is suitable for chromium adsorption in a wide pH range. A chemical rather than a physical adsorption occurred for these adsorbents as revealed by a pseudo‐second‐order kinetic study. The results of the adsorption isotherms showed that the adsorption process was similar to the Langmuir isotherm adsorption. Furthermore, the PPy/Co3O4/AgCl composite exhibited a high stability for chromium adsorption during recycling tests process. POLYM. COMPOS., 39:4416–4424, 2018. © 2017 Society of Plastics Engineers
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.24529