In-situ photo-reduction of silver particles and their SPR effect in enhancing the photocatalytic water splitting of Ag2O/TiO2 photocatalysts under solar light irradiation: A case study
Source abstract
Abstract
Abstract Plasmonic Ag 2 O/TiO 2 photocatalysts were synthesized by impregnating silver oxide nano clusters over the surface of TiO 2 . It is found that the in-situ photo reduced silver particles showed visible light absorption in a wide range of wavelength 400–800 nm due to localized surface plasmon resonance. The in-situ formed metallic silver transfer electrons to the TiO 2 through SPR excitation and thus improving photocatalytic hydrogen production. The SPR behavior of silver particles on TiO 2 was characterized by UV–vis diffuse reflectance spectroscopy and the X-ray photoelectron spectroscopy confirms the metallic silver. X-ray diffraction and transmission electron microscopy confirm the crystallinity of the prepared samples. H 2 -temperature-programmed reduction, photoluminescence, electron paramagnetic resonance, infrared spectroscopy, BET-surface area and Raman spectra were used to understand the morphological and chemical nature of the catalysts. Among the samples, 1 wt% Ag/TiO 2 showed the best activity ca. ∼23 mmol g −1 in presence of glycerol scavenger.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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