Investigation of the Thermal Behavior of Polypyrrole/Carbon Nanotube Composites and Utilization as Capacitive Material or Support for Catalysts

• Published in: Chemical engineering communications Vol. 204; no. 8; pp. 916 - 925
• Main Authors: Bayrakçeken, Hatice, Naktiyok, Jale, Özer, A. Kadir, Yurtcan, Ayşe Bayrakçeken
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 03.08.2017; Taylor & Francis Ltd
• Subjects: Carbon nanotubes; Chemical synthesis; Composite materials; Fourier transforms; Gravimetric analysis; Infrared analysis; Infrared spectroscopy; Isoconversional method; Kinetics; Microwave irradiation; Nanotubes; Particulate composites; Polymerization; Polypyrrole/CNT composite; Pt nanoparticle; Reaction kinetics; Spectroscopic analysis; Thermal analysis; Thermal decomposition; Thermodynamic properties; Thermogravimetric analysis; Thermogravimetric analysis (TGA); X-ray diffraction
• ISSN: 0098-6445; 1563-5201
• DOI: 10.1080/00986445.2017.1328409

In this study, polypyrrole (PPy)/carbon nanotube (CNT) composites were synthesized by in situ chemical oxidative polymerization of a pyrrole monomer on CNT. Two different types of CNT having different structural properties were used. The composites were characterized using BET surface area analysis, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) techniques. Thermal decomposition kinetics of PPy/CNT composites was studied by thermal gravimetric analysis techniques (TG/DTG (differential thermal gravimetric)) at different heating rates (2.5, 5, 7.5, and 10 K min −1 ). Kinetic parameters of the composites were obtained from the TG and DTG curves using the Kissinger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO) models. The electrochemical capacitive properties of the composites were investigated by the cyclic voltammetry (CV) technique. Pt nanoparticles were decorated on the plain CNTs and composite materials via the microwave irradiation method.