New Understanding on Photocatalytic Mechanism of Nitrogen-Doped Graphene Quantum Dots-Decorated BiVO₄ Nanojunction Photocatalysts.

ABSTRACT: Bismuth vanadate (BiVO₄) is a promising candidate as a visible-light-driven photocatalyst in the aspect of practical applications. To investigate the origin of active species from BiVO₄ and understand the influence of the variations of the photocatalytic process, comparative studies on zero-dimensional nitrogen-doped graphene quantum dot (NGQD)-decorated BiVO₄ have been carried out for methylene blue photodegradation. It was found that the hydroxyl group-rich NGQD surface and the established heterojunction structure between NGQDs and BiVO₄ were greatly beneficial for the conversion of the ^•OH radical. With NGQD decoration, the dominant oxidant species for NGQDs/BiVO₄ were confirmed to be ^•OH and H₂O

SUBMITTER: Yang H 

PROVIDER: S-EPMC6641612 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature