Research demonstrates enhanced photocurrent and photocatalytic activity in TiO2 nanospheres, indicating the importance of defect structures for solar-driven applications.
TiO2 Nanospheres with a large surface area were synthesized via a hydrothermal reaction using titanium glycolate. The samples were subsequently subjected to different vacuum oven treatment times (2, 4, 6, and 8 h), resulting in Ti3+ self-doping. Comprehensive characterization was performed using transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The synthesized TiO2 Nanospheres exhibited significantly enhanced photocurrent and efficient photocatalytic activity under visible light irradiation, demonstrating their potential for applications in solar-driven water splitting. The results highlight the influence of Ti3+ self-doping on improving the photoactivity and photosensitivity of the material.
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Gao et al. (2025) studied this question.
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