Electrocrystallized Ag nanoparticle on functional multi-walled carbon nanotube surfaces for hydrazine oxidation |
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| Institution: | 1. Physics Department, Faculty of Science, Malayer University, Malayer, Iran;2. Department of Nano Science, Kermanshah University of Technology, Kermanshah, Iran;1. Analytical Division, Faculty of Chemistry, University of Mazandaran, Postal Code 47416-95447 Babolsar, Iran;2. Faculty of Chemistry, University of Mazandaran, Babolsar, Iran;1. Omsk Scientific Center, Siberian Branch of the Russian Academy of Sciences, Karl Marx Avenue 15, 644040 Omsk, Russia;2. Omsk State Technical University, Mira Avenue 11, 644050 Omsk, Russia;3. St. Petersburg State University, 198504 St. Petersburg, Russia;4. Institute of Solid State Physics, Dresden University of Technology, D-01062 Dresden, Germany;1. Instituto de Química de São Carlos, Universidade de São Paulo, CEP 13560-970, CP 780, São Carlos, SP, Brazil;2. Univ. Grenoble Alpes, LEPMI, F-38000 Grenoble, France;3. CNRS, LEPMI, F-38000 Grenoble, France;4. Institut Universitaire de France, IUF, Paris, France |
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| Abstract: | 4-Aminobenzoic acid was covalently grafted on multi-walled carbon nanotubes (MWNTs) by amine cation radical formation in the electrooxidation process of the amino-containing compound. Then, silver (Ag) nanoparticles were electrocrystallized on 4-aminobenzoic acid monolayer-grafted MWNTs by a potential-step method. The structure and nature of the resulting Ag/MWNT composites were characterized by transmission electron microscopy and X-ray diffraction. The electrocatalytic properties of the Ag/MWNT electrode for hydrazine oxidation have been investigated by cyclic voltammetry, high electrocatalytic activity of the Ag/MWNT electrode can be observed. This may be attributed to the small particle size of the silver particles. The results imply that the Ag/MWNT composites have a good application potential in fuel cells. |
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