Hydrothermal synthesis and tuning of size and morphology of α-Co(OH)2 and α-Co2(OH)3Cl nanostructures as precursors for nanosized Co3O4 |
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| Affiliation: | 1. School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, PR China;2. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, PR China;3. Promising Centre for Sensors and Electronic Devices (PCSED), Department of Chemistry, College of Science and Arts, Najran University, Najran 11001, Saudi Arabia;1. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;2. Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;1. Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, PR China;2. Analytic and Testing Research Center of Yunnan, Kunming, Yunnan 650093, PR China |
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| Abstract: | This study aims to investigate the hydrothermally synthesized cobalt(II) hydroxide-based materials, which will be thermally converted to generate Co3O4 nanostructures; an important class of materials characterized by good electrochemical, catalytic and optical properties. First, cobalt(II) hydroxide nanostructures were prepared via hydrothermal hydrolysis of two different precursors (cobalt(II) chloride salt and dichlorobis(thiourea)cobalt(II) complex) exposure to an ammonia atmosphere, and then the obtained α-Co(OH)2 and α-Co2(OH)3Cl nanostructures were calcined to produce Co3O4 nanostructures that were characterized by FT-IR, XRD, UV–vis DRS and SEM techniques. The effects of the nature of the precursor, its concentration, and of the temperature and reaction time on size and morphology of the product were also investigated. |
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| Keywords: | Powders: chemical preparation Spectroscopy X-ray methods Optical properties |
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