Hierarchically Porous, Biphasic, and C-Doped TiO₂ for Solar Photocatalytic Degradation of Dyes and Selective Oxidation of Benzyl Alcohol.

ABSTRACT: Macroporous TiO₂ monoliths were synthesized by self-sustained combustion reactions of molded pellets made up of a mixture of TiCl₄ as a precursor, urea as a fuel, ammonium nitrate as an oxidizer, and starch as a binder. The porous TiO₂ monoliths were found to be a heterostructure of anatase and rutile phases, in addition to being doped with carbon. Variation in the amount of starch yielded porous monoliths of different anatase-rutile ratios (increasing rutile component from 0 to 40%) but comparable Brunauer-Emmett-Teller (BET) surface area (∼30 m² g^-1). The porous monoliths obtained, where the TiCl₄/starch mass ratio was 2.17, exhibit exceptional photocatalytic activity in the degradation of dyes (methylene blue and methyl o

SUBMITTER: Ragesh Nath R 

PROVIDER: S-EPMC8154131 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature