Facile synthesis and electrochemical hydrogen storage of bentonite/TiO2/Au nanocomposite |
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| Affiliation: | 1. Department of Physics, Faculty of Science, Bu-Ali Sina University, 65174, Hamedan, Iran;2. Faculty of Chemistry, Bu-Ali Sina University, 65174, Hamedan, Iran;3. Department of Chemistry, Faculty of Science, University of Qom, Qom, 3716146611, Iran;4. Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea;1. Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box. 87317-51167, Iran;2. Faculty of Chemistry, Razi University, Kermanshah 6714414971, Iran;3. Department of Chemistry, College of Science, University of Raparin, Rania, Kurdistan Region, Iraq;1. Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box. 87317– 51167, Iran;2. Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran;1. Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box. 87317-51167, Iran;2. Department of Chemistry, College of Education, University of Al-Qadisiyah, Diwaniya, 1753, Iraq |
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| Abstract: | In this study, the electrochemical hydrogen storage of bentonite composites containing TiO2 and Au nanoparticles (NPs) has been investigated by cyclic voltammetry (CV) analysis. TiO2 NPs were first deposited on the bentonite substrate by reflux technique. Au NPs were then prepared by laser ablation in liquid (LAL) method under different laser irradiation times (6, 12, and 18 min), and utilized in the decoration of bentonite/TiO2 nanocomposite by physical mixing. X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, and elemental mapping were carried out in the characterization of the prepared bentonite/TiO2/Au nanocomposite. The surface and chemical properties of the acquired nanocomposite were analyzed by Brunauer-Emmett-Teller and Fourier transform infrared spectroscopy, respectively. Electrochemical measurement was performed on stainless steel mesh prefabricated electrodes in 1 M KOH electrolyte solution. The B-T/Au nanocomposite prepared under 12 min laser irradiation displayed the highest hydrogen storage capacity (15 Cg-1). |
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| Keywords: | Bentonite Laser ablation in liquid Gold nanoparticles Hydrogen storage |
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