Remarkable improvement of visible light photocatalytic activity of TiO 2 nanotubes doped sequentially with noble metals for removing of organic and microbial pollutants
Source abstract
Abstract
Abstract The aim of this study was to show that Ag and Au nanoparticles (NPs) can have a synergistic effect on the photocatalytic and antibacterial activity of TiO 2 nanotubes (NTs) under visible irradiation. TiO 2 NTs were grown on Ti substrate by anodic oxidation and modified with Ag and Au NPs by dip coating and sputtering methods, respectively. The spherical 5–20 nm Ag and Au NPs were deposited on TiO 2 NTs with diameter of 50–80 nm. In contrast to obtained results under UV irradiation, visible-light absorption range and visible photocatalytic activity of Ag and Au co-modified TiO 2 NTs were much higher than TiO 2 NTs without modification and TiO 2 NTs modified with monometallic NPs. Photocatalytic activity of modified TiO 2 NTs increased with increasing annealing temperature and appearing rutile phase. Antibacterial activity of Ag and Au-comodified TiO 2 NTs against E. coli was noticeably more than that of TiO 2 NTs modified with monometallic NPs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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