Fabrication of Au functionalized TiO2 nanofibers for photocatalytic application
Source abstract
Abstract
Pristine titanium dioxide (TiO 2) and gold (Au)-doped TiO 2 (TiO 2-Au) composite nanofibers (NFs) with different Au contents were fabricated by electrospinning. The thermal behavior of the as-spun composite precursor NFs were analyzed and characterized. Photocatalytic reactions were performed with methyl blue (MB) aqueous solution under UV-Vis and different irradiation wavelengths (including 360 nm, 528 nm, and 360 nm and 528 nm together). As a result, the morphology and the structure of TiO 2-Au composite NFs were significantly influenced by calcination temperature, leading to the controllable phase ratio of anatase and rutile in TiO 2. TiO 2-Au composite NFs, with an average diameter of 171 nm containing Au crystals of about 10 nm, exhibited enhanced photocata-lytic efficiency toward the MB, compared to that of commercial P25 (a multiphase TiO 2 98% anatase and 2% rutile). The corresponding degradation level reached 95% after 10 min. When irradiated with light having different wavelengths, the TiO 2-Au composite NFs catalyst had the best performance under 360 nm and 528 nm together, indicating that Au NPs functionalized TiO 2 NFs can enhance the photocatalysis from UV range to visible range. The mechanism of photocatalytic reactions under different irradiations is discussed in the present paper.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Electrospun Nanofibers in Biomedical Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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