Effect of Ag doping on phase-change and photocatalytic performance of rutile–anatase mixed-phase titanium dioxide (TiO2) nanoparticles
Source abstract
Abstract
Wastewater carrying dye effluents, released from various industries, imposes adverse effects on the environment by enhancing water pollution. The traditional methods to treat wastewater are expensive and produce various secondary by-products during the treatment process. Semiconductor photocatalysis using TiO2 is proved to be effective but is restricted by high recombination rate of photogenerated charge carriers and their absorption in ultraviolet region of the solar spectrum. In this paper, we have synthesized pure and Ag-doped TiO2 nanoparticles with varying Ag concentrations by co-precipitation process. These photocatalysts were characterized with X-ray diffraction, Raman spectroscopy, field emission scanning electron microscope, Fourier transform infrared spectroscopy, and diffused reflectance spectroscopy. X-ray diffraction and Raman spectroscopy confirmed the rutile–anatase mixed-phase TiO2 photocatalysts. The role of Ag doping was also investigated in the phase transformation of mixed-phase TiO2 nanoparticles. Further, the effect of mixed-phase and Ag doping on photocatalytic activity was also investigated. The pure and Ag-doped TiO2 photocatalysts were monitored for degradation of methylene blue dye under sunlight. Significant improvement in the photocatalytic performance of TiO2 was found after Ag doping.
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Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (72)
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