Controlled Synthesis, Characterization, and Photocatalytic Application of Co₂TiO₄ Nanoparticles

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• 作者：Majid Ramezani ; S. Mostafa Hosseinpour-Mashkani
• 关键词：Sol–gel preparation ; nanoparticles ; Co2TiO4 ; x ; ray techniques ; semiconductors ; photocatalyst
• 刊名：Journal of Electronic Materials
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：46
• 期：2
• 页码：1371-1377
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials; Electronics and Microelectronics, Instrumentation; Solid State Physics;
• 出版者：Springer US
• ISSN：1543-186X
• 卷排序：46

文摘

In the current study, an attempt is made to synthesize Co₂TiO₄ nanoparticles through the simple two-step sol–gel method with the aid of titanium(IV) isopropoxide and cobalt(II) acetate tetrahydrate as starting reagents in the presence of ethanol as a solvent. Additionally, the effects of sodium hydroxide and oxalic acid as the pH controller agents on the morphology and particle size of the products were investigated. Furthermore, effects of several natural and chemical surfactants such as starch, lactose, glucose, oleyl amine, and sodium dodecyl sulfate (SDS) on the morphology and particle size of final products were investigated. Based on the scanning electron microscopy (SEM) results, the above-mentioned parameters have a direct effect on the morphology and particle size of Co₂TiO₄ nanoparticles. The x-ray diffraction (XRD) results showed that pure cubic cobalt titanium oxide nanoparticles were obtained by this method after heat treatment at 600 and 900°C. Moreover, in the presence of Co₂TiO₄ nanoparticles as photocatalyst, the percentage of methyl orange (MO) degradation was about 100% after 40 min of irradiation of ultraviolet (UV) light.