N-doped graphene quantum dots for enhancing multi-level Bi2Ti2O7 spheres photocatalytic activity via electronic trapping. Issue 5 (7th April 2022)

• Record Type: Journal Article
• Authors: Liu, Xiqing; Zhou, Zhiping; Wang, Tao; Ma, Changchang; Yan, Yongsheng
• Is Part Of: Journal of dispersion science and technology. Volume 43:Issue 5(2022)
• Page Start: 639
• Page End: 648
• Publication Date: 2022-04-07
• Subjects: Graphene quantum dots -- N-doped -- multi-level spheres -- activation regions; Emulsions -- Periodicals; Suspensions (Chemistry) -- Periodicals; Emulsions; Suspensions; 541.34
• DOI: 10.1080/01932691.2020.1844735
• Languages: English
• ISSNs: 0193-2691

Abstract

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 (Bi2 Ti2 O7 ) and N-doped graphene quantum dots (N-GQD) were constructed for the photocatalytic application. Experiments demonstrated that the N-GQD/Bi2 Ti2 O7 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/Bi2 Ti2 O7 materials in the photocatalytic field. Graphical Abstract: UF0001 A novel N-GQD modified multi-level Bi2 Ti2 O7 spheres exhibited higher photocatalytic activity due to efficient electron transfer via N atoms.