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Free-standing polypyrrole/polyaniline composite film fabricated by interfacial polymerization at the vapor/liquid interface for enhanced hexavalent chromium adsorption

Thao, V.D. and Giang, B.L. and Thu, T.V. (2019) Free-standing polypyrrole/polyaniline composite film fabricated by interfacial polymerization at the vapor/liquid interface for enhanced hexavalent chromium adsorption. RSC Advances, 9 (10). pp. 5445-5452. ISSN 20462069

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Abstract

Interfacial polymerization is an innovative technique for the fabrication of polymeric films. However, the majority of studies on interfacial polymerization has focused on liquid/liquid interfaces, and little work has been done on vapor/liquid interfaces. In this paper, we present the fabrication of free-standing polypyrrole/polyaniline (PPy/PANI) composite films by interfacial polymerization at a vapor/liquid interface using FeCl 3 as an oxidant. The obtained PPy/PANI composite films were characterized using Fourier transform infrared spectroscopy, X-ray diffractometry, and scanning electron microscopy. It was found that the PPy/PANI composite films consist of PANI particles evenly distributed on porous PPy film. The influence of FeCl 3 concentration on the morphology of the resulting composite films was investigated. The PPy/PANI composite films show an excellent Cr(vi) adsorption capacity of 256.41 mg g −1 , much higher than that of PPy-based absorbents prepared from chemical and electrochemical polymerization routes. This work thus suggests a new route for the fabrication of PPy/PANI films with highly enhanced Cr(vi) adsorption capacity for practical applications. © The Royal Society of Chemistry.

Item Type: Article
Divisions: Faculties > Faculty of Physical and Chemical Engineering
Identification Number: 10.1039/c8ra10478f
Uncontrolled Keywords: Adsorption; Chlorine compounds; Chromium compounds; Fabrication; Fourier transform infrared spectroscopy; Iron compounds; Polyaniline; Polymerization; Polypyrroles; Scanning electron microscopy; X ray diffraction analysis; Cr adsorptions; Hexavalent chromium; Innovative techniques; Interfacial polymerization; Liquid/liquid interface; PPy films; Vapor/liquid interface; Composite films
Additional Information: Language of original document: English. All Open Access, Gold.
URI: http://eprints.lqdtu.edu.vn/id/eprint/9455

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