Ultra-Highly Efficient Removal of Methylene Blue Based on Graphene Oxide/TiO₂/Bentonite Sponge.

ABSTRACT: An ultra-highly efficient Graphene Oxide/TiO₂/Bentonite (GO/TiO₂/Bent) sponge was synthesized using an in situ hydrothermal method. GO/TiO₂/Bent sponge with a GO mass concentration of 10% exhibited the highest treatment efficiency of methylene blue (MB), combining adsorption and photocatalytic degradation, and achieved a maximum removal efficiency of 100% within about 70 min. To further prove the ultra-high removal capacity of the sponge, the concentration of MB in water increased to ten times the original concentration. At so high a MB concentration, the removal rate was still as high as 80% in 90 min. The photocatalytic mechanism of GO/TiO₂/Bent sponge was discussed through XPS, PL and radicals quenching experiments. Here Bent can immobilize Ti

SUBMITTER: Liu Y 

PROVIDER: S-EPMC7078707 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature