biostudies-literatureUnknown10(20)Pourmorteza NThe incorporation of Cu(OAc)<sub>2</sub> into ascorbic acid coated TiO<sub>2</sub> nanoparticles easily provided a new heterogeneous visible-light active titania-based photocatalyst (TiO<sub>2</sub>-AA-Cu(ii)) which was characterized by different techniques such as FT-IR, XPS, ICP-AES, TGA and TEM. A red-shift of the band-edge and a reduction of the band-gap (2.8 eV <i>vs.</i> 3.08 for TiO<sub>2</sub>) were demonstrated by UV-DRS and Tauc plots. The combination of the as-prepared TiO<sub>2</sub>-AA-Cu(ii) nanoparticles with TEMPO and molecular oxygen (air) afforded an active catalytic system for the selective oxidation of diverse set of benzylic alcohols under solvent-free conditions. A photoassisted pathway was confirmed for oxidation reactions evidenced by good correlation between appareRSC advances12053-12059https://www.ebi.ac.uk/biostudies/studies/S-EPMC9050754biostudies-literatureCu(ii) vitamin C tunes photocatalytic activity of TiO<sub>2</sub> nanoparticles for visible light-driven aerobic oxidation of benzylic alcohols.PMC9050754Rezaeifard APourmorteza NJafarpour MFeizpour FfalseCu(ii) vitamin C tunes photocatalytic activity of TiO<sub>2</sub> nanoparticles for visible light-driven aerobic oxidation of benzylic alcohols.The incorporation of Cu(OAc)<sub>2</sub> into ascorbic acid coated TiO<sub>2</sub> nanoparticles easily provided a new heterogeneous visible-light active titania-based photocatalyst (TiO<sub>2</sub>-AA-Cu(ii)) which was characterized by different techniques such as FT-IR, XPS, ICP-AES, TGA and TEM. A red-shift of the band-edge and a reduction of the band-gap (2.8 eV <i>vs.</i> 3.08 for TiO<sub>2</sub>) were demonstrated by UV-DRS and Tauc plots. The combination of the as-prepared TiO<sub>2</sub>-AA-Cu(ii) nanoparticles with TEMPO and molecular oxygen (air) afforded an active catalytic system for the selective oxidation of diverse set of benzylic alcohols under solvent-free conditions. A photoassisted pathway was confirmed for oxidation reactions evidenced by good correlation between appare2020-01-01T00:00:00Z2020 Mar2025-04-04T09:10:13.68Z2025-04-04T09:10:13.68ZS-EPMC90507543549660510.1039/d0ra00075b