The synthesis of \(\text{TiO}_2\) nanosheets and their outperformance in the photocatalytic degradation of methylene blue
DOI:
https://doi.org/10.56764/hpu2.jos.2025.4.03.26-33Abstract
TiO2 nanocrystals have been deployed as photocatalysts for the degradation of organic pollutants in wastewater due to their high chemical resistance and environmental friendliness. Because the reaction takes place on the catalyst surface, the crystal phase and the morphology of TiO2 nanocrystals are important factors governing the catalytic activity. Herein, we prepared TiO2 nanosheets by hydrothermal treatment of titanium (IV) butoxide in the presence of hydrofluoric acid. The crystallinity and the morphology of TiO2 nanosheets were characterized by X-ray diffraction and scanning electron microscope (SEM), respectively. The photocatalytic activity of TiO2 nanosheets was compared with that of commercially available TiO2 nanoparticles (Degussa P25) using the degradation reaction of methylene blue (MB) in water under ultraviolet light at 365 nm. The X-ray diffraction and SEM characterizations indicated that anatase TiO2 nanosheets with enriched {001} facets were successfully obtained. The MB degradation assay revealed that the decolorization of MB on TiO2 nanosheets was 1.85 times faster than that on the TiO2 nanoparticles counterpart. The synthesis and excellent photocatalytic activity of TiO2 nanosheets demonstrated in this paper may promote the development of catalysts for removing organic pollutants in wastewater.
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Copyright (c) 2025 Duc-Nam Cao, Ba-Trang Doan, Van-Tuan Mai, Dinh-Lam Nguyen, Duy-Khanh Nguyen, Minh-Quy Bui, Xuan-Dung Mai
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