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Published in: Polymer Bulletin 8/2023

17-09-2022 | Original Paper

PANI/Bi2O3 polymeric nanocomposite for the reduction of 4-nitrophenol

Authors: George Joseph, Dephan Pinheiro, Mothi Krishna Mohan, Sunaja Devi Kalathiparambil Rajendra Pai

Published in: Polymer Bulletin | Issue 8/2023

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Abstract

Nitro-aromatics pollute the aquatic environment and reach human beings via drinking water. 4-Nitrophenol (4-NP) is the most common pollutant among them and can be reduced to non-toxic 4-aminophenol in the presence of sodium borohydride (NaBH4). Polyaniline/bismuth oxide (PANI/Bi2O3) nanocomposite is synthesized from aniline and Bi2O3 by chemical oxidative polymerization. The composition and structural properties of PANI/Bi2O3 composite are identified by various characterization methods like X-ray powder diffraction, fourier transform infrared spectroscopy, thermogravimetric analysis , and zeta potential analysis. The synthesized PANI/Bi2O3 shows high catalytic efficiency towards the reduction of 4-NP in the presence of NaBH4 under optimized reaction conditions. The numerous active sites on the composite and the presence of PANI/Bi2O3 interface are the reasons for the reduction of 4-NP to 4-aminophenol. A complete degradation is achieved in 15 min with 0.1 g of the composite. This nanocomposite shows good stability for five cycles without losing efficiency. PANI/Bi2O3 possesses a high reduction capacity and can be used to reduce other nitro organic pollutants in water. The aim of the study is to study the effective catalytic reduction of 4-NP using PANI/Bi2O3.

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Metadata
Title
PANI/Bi2O3 polymeric nanocomposite for the reduction of 4-nitrophenol
Authors
George Joseph
Dephan Pinheiro
Mothi Krishna Mohan
Sunaja Devi Kalathiparambil Rajendra Pai
Publication date
17-09-2022
Publisher
Springer Berlin Heidelberg
Published in
Polymer Bulletin / Issue 8/2023
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-022-04457-y

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