In this study, TiO2 was synthesized by refluxing gel TiO2 in H2O2 solution. Experiments were carried to investigate effects of the acidity of the reactions, refluxing time, quantity of H2O2, and the drying condition to the formation and photocatalytic activities of products. Samples were characterized by XRD, BET, IR, and DRS. Adsorption and phototcatalytic properties of samples were studied by the degradation of methylene blue (MB) under visible light. Results showed that TiO2 was crystallized only from the refluxing baths that were not adjusted their acidity after mixing TiO2 sol with H2O2 solution. Increasing the refluxing time or drying products at 100 oC led to decreasing photocatalytic activities of TiO2. Increasing the amount of H2O2 in the refluxed solutions, photocatalytic activities of TiO2 increased to a maximum level when 25 mL of H2O2 was used.
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How to Cite
Nguyen, N., & Nguyen, N. (2015). TiO2 photocatalyst synthesized by refluxing method in H2O2 solution. Science and Technology Development Journal, 18(2), 96-107. https://doi.org/https://doi.org/10.32508/stdj.v18i2.1137
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Science and Technology Development Journal (STDJ) (1859-0128) is the official journal of Viet Nam National University Ho Chi Minh City, Viet Nam, published by Viet Nam National University Ho Chi Minh City, Viet Nam. Science & Technology Development Journal is a multiple discipline science journal covering from natural science, engineering & technology, humanities, art, laws, economics, earth science, environment, social sciences and health sciences.