Variation of Ammonium Persulfate Concentration Determines Particle Morphology and Electrical Conductivity in HCl Doped Polyaniline

Seminar Nasional Material 2018

Reza, Muhammad^1 ; Srikandi, Nona^1 ; Amalina, Auliya Nur^1 ; Benu, Didi Prasetyo^1 ; Steky, Fry Voni^1 ; Rochliadi, Achmad^1 ; Suendo, Veinardi^1^2

Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung

40132, Indonesia^1

Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung

40132, Indonesia^2

关键词: Direct mixing method;    Doped polyaniline;    Electrical conductivity;    Infrared and Raman spectroscopy;    Morphological changes;    Oxidizing agents;    Particle morphologies;    Polyanilines (PAni);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/599/1/012002/pdf
DOI  :  10.1088/1757-899X/599/1/012002

来源: IOP

【 摘 要 】

Polyaniline (PANI) is one of conducting polymers which is widely used in various applications especially energy field, like solar cells and batteries. PANI emeraldine salt (PANI ES) is the only type of conducting PANI which can be easily synthesized using a direct mixing method in an oxidizing solution. Ammonium persulfate (APS) is one example of a strong oxidizing agent which is often used in PANI synthesis. The APS concentrations used in this study ranged from 0.1 to 1 M. Infrared and Raman spectroscopy shows that the addition of APS concentrations above 0.5 M produces the non-conducting fully oxidized PANI and phenazine species. Scanning electron microscope (SEM) showed morphological changes of PANI ES from nanofiber (diameter 80 - 110 nm) to granules (diameter 20 - 70 nm) as APS concentration increases. Based on Electrochemical impedance spectroscopy (EIS), conductivity of PANI increases as APS concentration increases with maximum conductivity of 0.36 S cm-1 at 0.5 M.