TY - JOUR

T1 - Influence of monomer content on course of aniline polymerization in presence of high surface area carbon

AU - Kuznetsov, Aleksey N.

AU - Ayupov, Artem B.

AU - Yeletsky, Petr M.

AU - Lebedeva, Marina V.

N1 - Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/2/15

Y1 - 2019/2/15

N2 - A series of carbon/polyaniline (C/Pani) composites were synthesized by oxidative polymerization of aniline in the presence of carbon in acid media. Biomass-derived activated carbon (AC) having 1740 m2/g surface area was used as the carbon component. The aniline loadings varied from 8 to 60 wt%. A composition of the composites was determined by CHNS analysis. Porous structure of polyaniline, carbon and C/Pani composites was characterized with nitrogen adsorption at 77 K. Structure of the composites, polyaniline and carbon was studied by Fourier transform infrared spectroscopy (FTIR). Electrochemical properties of the samples were investigated by cyclic voltammetry technique in 1 M H2SO4 at 25 °C. It has been shown that the aniline loading and presence of the carbon in the reaction mixture determine final product of the polymerization. At the aniline loading <30 wt%, 4-aminodiphenilamine (4-ADPA) and phenazine-ring containing structures (PhzR) being intermediates in the aniline polymerization are predominantly formed and registered by electrochemical methods. Polyaniline formation is observed for the samples with aniline loading >40 wt%.

AB - A series of carbon/polyaniline (C/Pani) composites were synthesized by oxidative polymerization of aniline in the presence of carbon in acid media. Biomass-derived activated carbon (AC) having 1740 m2/g surface area was used as the carbon component. The aniline loadings varied from 8 to 60 wt%. A composition of the composites was determined by CHNS analysis. Porous structure of polyaniline, carbon and C/Pani composites was characterized with nitrogen adsorption at 77 K. Structure of the composites, polyaniline and carbon was studied by Fourier transform infrared spectroscopy (FTIR). Electrochemical properties of the samples were investigated by cyclic voltammetry technique in 1 M H2SO4 at 25 °C. It has been shown that the aniline loading and presence of the carbon in the reaction mixture determine final product of the polymerization. At the aniline loading <30 wt%, 4-aminodiphenilamine (4-ADPA) and phenazine-ring containing structures (PhzR) being intermediates in the aniline polymerization are predominantly formed and registered by electrochemical methods. Polyaniline formation is observed for the samples with aniline loading >40 wt%.

KW - 4-aminodiphenilamine

KW - Aniline polymerization

KW - Composite materials

KW - Phenazine-ring structures

KW - Polyaniline

KW - Porous carbon

KW - MECHANISM

KW - DEPOSITION

KW - POLYANILINE NANOTUBES

KW - POROUS CARBON

KW - COMPOSITE

KW - FILMS

KW - SPECTROSCOPY

KW - OXIDATIVE POLYMERIZATION

KW - REDOX TRANSFORMATIONS

KW - ELECTROCHEMICAL DEGRADATION

UR - http://www.scopus.com/inward/record.url?scp=85059950776&partnerID=8YFLogxK

U2 - 10.1016/j.jelechem.2018.12.057

DO - 10.1016/j.jelechem.2018.12.057

M3 - Article

AN - SCOPUS:85059950776

VL - 835

SP - 73

EP - 80

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

SN - 1572-6657

ER -