Doping effects of cerium ion on structure and electrochemical properties of polyaniline. Issue 1 (14th November 2017)

• Record Type: Journal Article
• Authors: Li, Zhihua; Shen, Yuting; Li, Yanbo; Zheng, Feng; Liu, Lanlan
• Is Part Of: Polymer international. Volume 67:Issue 1(2018)
• Page Start: 121
• Page End: 126
• Publication Date: 2017-11-14
• Subjects: conducting polymers -- polyaniline -- cerium ion -- synthesis and processing -- electrochemistry; Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.7
• DOI: 10.1002/pi.5487
• Languages: English
• ISSNs: 0959-8103

Abstract

Abstract : Polyaniline (PANI)/Ce 3+ and PANI/Ce 4+ composites were successfully prepared by in situ polymerization in an aqueous solution of poly(2‐acrylamido‐2‐methylpropane sulfonic acid). PANI/Ce ion composite has a high degree of sphericity, high electrical conductivity and good electrochemical performance. The conductivity of PANI/Ce(NO3 )3 reaches a maximum of 46.76 S cm −1 at 20 wt% of Ce(NO3 )3 . In particular, polarization results showed that the corrosion current density (0.47 µA cm −2 ) and the inhibition efficiency (97%) of PANI/Ce(NO3 )3 were better than the results for PANI and PANI/Ce(SO4 )2 composite. Abstract: Polyaniline (PANI)/Ce 3+ and PANI/Ce 4+ composites were successfully prepared by in situ polymerization in an aqueous solution of poly(2‐acrylamido‐2‐methylpropane sulfonic acid) and characterized by Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, X‐ray photoelectron spectroscopy, SEM, TEM and electrochemical methods. The results showed that the PANI/Ce ion composites had a high degree of sphericity, high electrical conductivity and good electrochemical performance. The conductivity of PANI/Ce(NO3 )3 reaches a maximum of 46.76 S cm −1 at 20 wt% of Ce(NO3 )3 . It is increased by 377% by comparison with that of pure PANI. In particular, the polarization results showed that the corrosion current density (0.47 µA cm −2 ) and the inhibition efficiency (97%) of PANI/Ce(NO3 )3 were better than the results for PANI and PANI/Ce(SO4 )2 composite. This suggested that the PANI/Ce(NO3 )3 composite has promising applications in conductive materials, anticorrosion coatings and other related fields. © 2017 Society of Chemical Industry