AI Article Synopsis
- Ag/mesoporous black TiO nanotubes heterojunctions (Ag-MBTHs) were created using a combination of surface hydrogenation, wet-impregnation, and photoreduction techniques, resulting in a high specific surface area and small pore size.
- The Ag-MBTHs have a narrow band gap of ≈2.63 eV, allowing them to effectively absorb light across UV, visible, and near-infrared (NIR) spectrums, which is beneficial for their catalytic processes.
- They demonstrate impressive capabilities in completely converting nitro aromatic compounds and mineralizing toxic phenol, attributed to their unique structural features and the surface plasmon resonance effect from Ag nanoparticles, enhancing light collection and electron
Article Abstract
Ag/mesoporous black TiO nanotubes heterojunctions (Ag-MBTHs) were fabricated through a surface hydrogenation, wet-impregnation and photoreduction strategy. The as-prepared Ag-MBTHs possess a relatively high specific surface area of ≈85 m g and an average pore size of ≈13.2 nm. The Ag-MBTHs with a narrow band gap of ≈2.63 eV extend the photoresponse from UV to the visible-light and near-infrared (NIR) region. They exhibit excellent visible-NIR-driven photothermal catalytic and photocatalytic performance for complete conversion of nitro aromatic compounds (100 %) and mineralization of highly toxic phenol (100 %). The enhancement can be attributed to the mesoporous hollow structures increasing the light multi-refraction, the Ti in frameworks and the surface plasmon resonance (SPR) effect of plasmonic Ag nanoparticles favoring light-harvesting and spatial separation of photogenerated electron-hole pairs, which is confirmed by transient fluorescence. The fabrication of this SPR-enhanced visible-NIR-driven Ag-MBTHs catalyst may provide new insights for designing other high-performance heterojunctions as photocatalytic and photothermal catalytic nanomaterials.
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| http://dx.doi.org/10.1002/asia.201801428 | DOI Listing |
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