Low-temperature synthesis of peptized TiO2 hydrosols with tunable surface charges for enhanced photocatalytic activity

Low-temperature synthesis of peptized TiO2 hydrosols with tunable surface charges for enhanced photocatalytic activity

Peptized titania sols offer numerous advantages, including uniform distribution, small particle size, good dispersibility in aqueous solutions, and strong interfacial adsorption capabilities. In this study, a novel insight into the systematic analysis of key parameters influencing the characteristic...

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Bibliographic Details
Published in:Ceramics international Vol. 49; no. 19; pp. 32104 - 32115
Main Authors: Nahak, B.K., Mahata, D., Jhariya, N., Yadav, P., Panda, S., Sahu, S.S., Swatishree, K., Khedulkar, Akhil Pradiprao, Bolloju, S., Pandit, Bidhan, Mahato, S.S., Mahata, S.
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-10-2023
Subjects:
Dye degradation
Electrostatic stabilization
Peptization
Photocatalysis
Titania
Zeta potential
Dye degradation
Electrostatic stabilization
Titania
Zeta potential
Photocatalysis
Peptization
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Summary:Peptized titania sols offer numerous advantages, including uniform distribution, small particle size, good dispersibility in aqueous solutions, and strong interfacial adsorption capabilities. In this study, a novel insight into the systematic analysis of key parameters influencing the characteristics of peptized titania sols synthesized from the hydrolysis-peptization of titanium iso-propoxide (TIP) is presented. The article focuses on electrostatic stabilization, surface area dependent on various modifying conditions including H+/Ti molar ratio, solvent, pH, particle size distribution, peptizing temperature and ageing. The study also establishes the mobility of charges, facilitating charge accumulation on particle surfaces under different conditions. This resulting in enhancing electrostatic potential development in the solution, as indicated by the zeta potential value. Furthermore, the synthesized sols were used to investigate its photocatalytic performance by Methyl Violet and Rhodamine 6G organic dye degradation and other characterizations were performed to validate its properties. [Display omitted] •Anatase TiO2 has been prepared by acid catalyzed peptization method.•Photocatalytic activity of synthesized nano TiO2 sol have been studied.•pH, zeta potential, and optical density studies of TiO2 has been analyzed.•Enhanced zeta potential observed in solution but reverse phenomena in alcohol.•H+/Ti mole ratio of 0.30 have shown best methyl violet degradation efficiency.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2023.07.178