Scholarlink

Abstract <p>Novel polyindole (Pin) and/or graphene (Gr)/chromium dioxide (CrO<sub>2</sub>) nano-composites have successfully formed employing chemical and electrochemical (cyclic voltammetry technique) polymerization method in a deep eutectic solvent (DES), which was used as the polymerization medium. FTIR and UV-Vis spectroscopies, X-ray diffraction (XRD), thermogravimetric analysis (TGA) and voltammetric measurements were utilized to investigate electro/chemical properties of the Pin composites. Good conductivity was seen for the polyindole/graphene up to (5.56 S/cm) and polyindole/graphene/CroO<sub>2</sub> (9.85 S/cm) nanocomposites compared with pure polyindole (1.25 S/cm). The electrical stability of polymer films prepared in aqueous medium was studied. The results showed that the films possess remarkable electrical stability. The conductivity was also studied at different temperatures and the results showed that the conductivity increases with increasing temperature. The homogenous development of polyindole layers on electrode substrate were clearly observed by scanning electron microscopy technique and E-DAX. An increasing in surface area and porosity were accomplished in the polyindole composites compared to structure of polyindole surface. These findings give concept that the prepared composites would be valuable candidate for electrochemical applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synthesis and Characterization of Polyindole and CrO2/Graphene Nanocomposites from Deep Eutectic Solvents Using Electro/Chemical Polymerization

  • 期刊论文

  • 发表日期：

    2025年11月1日

查看全文
  • Mohammed Q. Mohammed,
  • Hayder Baqer Abdullah,
  • Jasim Mohammed Alshawi

摘要

Abstract

Novel polyindole (Pin) and/or graphene (Gr)/chromium dioxide (CrO2) nano-composites have successfully formed employing chemical and electrochemical (cyclic voltammetry technique) polymerization method in a deep eutectic solvent (DES), which was used as the polymerization medium. FTIR and UV-Vis spectroscopies, X-ray diffraction (XRD), thermogravimetric analysis (TGA) and voltammetric measurements were utilized to investigate electro/chemical properties of the Pin composites. Good conductivity was seen for the polyindole/graphene up to (5.56 S/cm) and polyindole/graphene/CroO2 (9.85 S/cm) nanocomposites compared with pure polyindole (1.25 S/cm). The electrical stability of polymer films prepared in aqueous medium was studied. The results showed that the films possess remarkable electrical stability. The conductivity was also studied at different temperatures and the results showed that the conductivity increases with increasing temperature. The homogenous development of polyindole layers on electrode substrate were clearly observed by scanning electron microscopy technique and E-DAX. An increasing in surface area and porosity were accomplished in the polyindole composites compared to structure of polyindole surface. These findings give concept that the prepared composites would be valuable candidate for electrochemical applications.