Facile synthesis of coral-like hierarchical polyaniline micro/nanostructures with enhanced supercapacitance and adsorption performance. (24th January 2019)

• Record Type: Journal Article
• Authors: Lyu, Wei; Yu, Mengting; Feng, Jiangtao; Yan, Wei
• Is Part Of: Polymer. Volume 162(2019)
• Page Start: 130
• Page End: 138
• Publication Date: 2019-01-24
• Subjects: Polyaniline -- Coral-like hierarchical structure -- Mesoporous structure -- Supercapacitor -- Adsorption; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2018.12.037
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: We presented a newly facile approach to scalable synthesize three-dimensional (3D) coral-like polyaniline (CL-PANI) hierarchical micro/nanostructures. The CL-PANI composed of well-defined nanowires with ca.20 nm was self-assembled by in situ conventional chemical polymerization with a different charging sequence. Electron microscopy, UV-Vis spectroscopy, X-ray diffraction, and nitrogen adsorption-desorption studies showed that CL-PANI possessed unique mesoporous structure and highly crystallinity which could promote rapid ion diffusion and charge transfer. Electrochemical experimental results showed that the as-prepared CL-PANI electrode had a superior electrochemical capacitance performance with a relatively high specific capacitance of 817 F g −1 at a current density of 0.5 A g −1 and a great rate capability of 67% specific capacitance retaining from 0.5 to 20 A g −1 . Meanwhile, CL-PANI exhibited an enhanced adsorption performance of azo dye Acid Red G (ARG) from aqueous solution with a Langmuir maximum adsorption of 310.2 mg g −1 at pH 2.0, 298 K. This study offers a simple and cost effective path for scalable synthesis of PANI materials for supercapacitor and adsorption application. Graphical abstract: We present a newly facile approach to scalable synthesize three-dimensional (3D) coral-like polyaniline (CL-PANI) hierarchical micro/nanostructures with enhanced supercapacitor and adsorption performance.Image 1 Highlights: ∙ A newly facile approach is developed to scalable synthesize 3D PANI (CL-PANI). ∙ A possible formation mechanism and evolution process of CL-PANI is proposed. ∙ CL-PANI possesses unique mesoporous structure and better crystallinity. ∙ CL-PANI shows enhanced supercapacitance and adsorption performance. Abstract : Abstracts.