Vitamin B5 copper conjugated triazine dendrimer improved the visible-light photocatalytic activity of TiO₂ nanoparticles for aerobic homocoupling reactions.

ABSTRACT: In this work, Cu-vitamin B5 (pantothenic acid) bonded to 2,4,6-trichloro-1,3,5-triazine produced a bioconjugated dendrimer giving rise to the visible-light photocatalytic activity of nanocrystalline TiO₂. XPS spectra uncovered the coexistence of Cu(II)/Cu(I) oxidation states with a predominant contribution of Cu(I). The new heterogeneous bio-relevant Cu-photocatalyst (Cu(I) Cu(II) [PTAPA G2-B5] @TiO₂) revealed a band gap value [E_g = (2.8 eV)] less than those of Cu free components [PTAPA G1-B5]@TiO₂ (3.04) and [PTAPA G2-B5]@TiO₂ (3.06) and particularly the bare TiO₂ (3.15 eV). The reactions showed to be light-dependent with the best performance under room light bulbs. The photocatalytic efficiency of the as-prepared heterojun

SUBMITTER: Zamenraz S 

PROVIDER: S-EPMC10834398 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature