1. N-doped graphene quantum dots for enhancing multi-level Bi2Ti2O7 spheres photocatalytic activity via electronic trapping.
- Author
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Liu, Xiqing, Zhou, Zhiping, Wang, Tao, Ma, Changchang, and Yan, Yongsheng
- Subjects
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QUANTUM dots , *PHOTOCATALYSTS , *BISMUTH , *GRAPHENE , *CHARGE exchange , *ELECTRON donors , *SPHERES - Abstract
The modification of photocatalyst was the vital task for improving photocatalytic performance. Inspired by multi-level effect and activation regions of N atom, multi-level bismuth-based spheres (Bi2Ti2O7) and N-doped graphene quantum dots (N-GQD) were constructed for the photocatalytic application. Experiments demonstrated that the N-GQD/Bi2Ti2O7 multi-level spheres showed higher photocatalytic performance due to the multi-level effect and activation regions. Meanwhile, a series of characterizations proved that the separation efficiency of electron–hole pairs was improved after the N-GQD modifications. A possible mechanism was proposed for investigating N-GQD/Bi2Ti2O7 materials in the photocatalytic field. A novel N-GQD modified multi-level Bi2Ti2O7 spheres exhibited higher photocatalytic activity due to efficient electron transfer via N atoms. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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