Electrochemical synthesis of polyaniline nanoparticles |
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| Affiliation: | 1. Department of Chemical Engineering, Tatung University, No. 40, Sec. 3, ChungShan North Rd., Taipei City 104, Taiwan;2. Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry, Shanxi University, Taiyuan 030006, PR China;3. Department of Chemistry, Tunghai University, No. 181, Sec. 3, Taichung Port Rd., Taichung City 40704, Taiwan;1. Department of Physics, Faculty of Science, Prince of Songkla University (PSU), Songkhla, 90112, Thailand;2. Center of Excellence in Nanotechnology for Energy (CENE), PSU, Songkhla, 90112, Thailand;1. The Engineering Research Institute, Ulster University, Newtownabbey BT37 OQB, United Kingdom;2. School of Chemistry and Chemical Engineering, Queen''s University Belfast, Stranmillis Road, Belfast BT9 5AG, United Kingdom;3. Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, United States;4. Nanoscience Technology Center, Department of Materials Science and Engineering, University of Central Florida, Orlando, FL 32826, United States;1. IITB-Monash Research Academy, Indian Institute of Technology Bombay, Mumbai 400076, India;2. Department Energy Science and Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India;3. School of Chemistry, Monash University, Clayton Campus, Victoria 3800, Australia;1. Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China;2. Institute of Medicine & Chemical Engineering, Zhenjiang College, Zhenjiang 212000, China;3. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China |
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| Abstract: | ![]()
Polyaniline nanoparticles were prepared on a highly oriented pyrolytic graphite (HOPG) surface from dilute polyaniline acidic solution (1 mM aniline+1 M HClO4) using a pulsed potentiostatic method. Electrochemistry, Fourier transform infrared external reflection spectroscopy (FT-IR-ERS), X-ray photoelectron spectroscopy (XPS) and tapping-mode atomic force microscopy (TMAFM) were used to characterize the composition and structure of the polyaniline nanoparticles. FT-IR-ERS and XPS results revealed that the polyaniline was in its emeraldine form. TMAFM measurement showed that the electropolymerized polyaniline nanoparticles dispersed on the HOPG surface with a coverage of about 1010 cm−2. These nanoparticles were disk-shaped having a height of 10–30 Å and an apparent diameter varying from 200 to 600 Å. The particle dimensions increased with the electropolymerization charge (Q) over the interval from 5.7 to 19.3 μC cm−2. |
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