Synthesis, Characterization and Photocatalytic Behavior of SiO₂ @nitrized-TiO₂ Nanocomposites Obtained by a Straightforward Novel Approach.

ABSTRACT: We report on the facile synthesis of SiO₂ @nitrized-TiO₂ nanocomposite (NST) by calcination of TiO₂ xerogel with OctaAmmonium POSS® (N-POSS; POSS=polyhedral oligomeric silsesquioxanes). The as-obtained nanoporous mixed oxide is constituted by uniformly distributed SiO₂ and nitrized-TiO₂ , where the silica component is present in an amorphous state and TiO₂ in an anatase/rutile mixed phase (92.1 % vs. 7.9 %, respectively) with very small anatase crystallites (3.7 nm). The TiO₂ lattice is nitrized both at interstitial and substitutional positions. NST features a negatively charged surface with a remarkable surface area (406 m²  g^-1 ), endowed with special adsorption capabilities towards cationi

SUBMITTER: Gulino A 

PROVIDER: S-EPMC8515923 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature