Efficient Removal of Cr(VI) by TiO₂ Based Micro-Nano Reactor via the Synergy of Adsorption and Photocatalysis.

ABSTRACT: The low-toxicity treatment of chromium-containing wastewater represents an important way of addressing key environmental problems. In this study, a core-shell structural ZIF-8@TiO₂ photocatalyst was synthesized by a simple one-step hydrothermal method. The obtained composite photocatalyst possessed improved photocatalytic activity compared with TiO₂. The results indicated that the optimized ZIF-8@TiO₂ composite exhibited the highest removal efficiency with 93.1% of Cr(VI) after 120 min under UV-vis irradiation. The removal curves and XPS results indicated that the adsorbed Cr(VI) on the ZIF-8 during the dark process was preferentially reduced. The superior removal efficiency of ZIF-8@TiO₂ is attributed to the combination of both high adsorption o

SUBMITTER: Song Y 

PROVIDER: S-EPMC8778119 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature