Photocatalytic inactivation of Escherischia coli under UV light irradiation using large surface area anatase TiO₂ quantum dots.

ABSTRACT: In this study, high specific surface areas (SSAs) of anatase titanium dioxide (TiO₂) quantum dots (QDs) were successfully synthesized through a novel one-step microwave-hydrothermal method in rapid synthesis time (20 min) without further heat treatment. XRD analysis and HR-TEM images showed that the as-prepared TiO₂ QDs of approximately 2 nm size have high crystallinity with anatase phase. Optical properties showed that the energy band gap (E _g) of as-prepared TiO₂ QDs was 3.60 eV, which is higher than the standard TiO₂ band gap, which might be due to the quantum size effect. Raman studies showed shifting and broadening of the peaks of TiO₂ QDs due to the reduction of the crystallite size. The obtained Brunauer-Emmett

SUBMITTER: Ahmed F 

PROVIDER: S-EPMC6936290 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature