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Impact of Titanium Dioxide Concentration and pH on the Removal of Organic and Pharmaceutical Pollutants in Wastewater

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Abstract:

Nanostructured titanium dioxide (TiO2) was synthesized via a hydrothermal method to enhance photocatalytic degradation of organic and pharmaceutical contaminants in wastewater. Characterization techniques confirmed the formation of anatase-phase TiO2 with a tetragonal structure, spherical morphology, and an average crystallite size of 29 nm. The material exhibited a band gap of 3.1 eV. The TiO2 solution has proven to be very effective in accelerating the breakdown of pharmaceutical and organic contaminants in wastewater, as evidenced by several methods, including high-performance liquid chromatography (HPLC) and Gas chromatography (GC). Photocatalytic performance was evaluated under varying catalyst concentrations and pH levels. Optimal degradation efficiency (72%) was achieved at pH 10, demonstrating TiO2's potential as an effective photocatalyst for wastewater treatment.

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Journal of Nano Research Vol. 90 View Preview

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Periodical:

Journal of Nano Research (Volume 90)

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85-100

DOI:

https://doi.org/10.4028/p-L9h0MP

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Online since:

December 2025

Authors:

Aya Talal Sami, Selma M.H. Al-Jawad*, Natheer Jamal Imran

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Hydrothermal, Photocatalytic Activity, TiO2 Nanoparticles, Wastewater

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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