The fabrication of a biomass carbon quantum dot-Bi2WO6 hybrid photocatalyst with high performance for antibiotic degradation. (20th November 2019)

• Record Type: Journal Article
• Authors: Tang, Xu; Yu, Yang; Ma, Changchang; Zhou, Guosheng; Liu, Xinlin; Song, Minshan; Lu, Ziyang; Liu, Lei
• Is Part Of: New journal of chemistry. Volume 43:Number 47(2019)
• Page Start: 18860
• Page End: 18867
• Publication Date: 2019-11-20
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c9nj04764f
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A novel biomass carbon quantum dots@Bi2 WO6 photocatalyst was prepared by a dialysis-assisted hydrothermal method for the photocatalytic degradation of antibiotics. Abstract : A novel biomass carbon quantum dots@Bi2 WO6 (BC-QDs@Bi2 WO6 ) photocatalyst with uniform dispersivity was prepared via a dialysis-assisted hydrothermal process. Multiple techniques including HR-TEM, XPS, UV-Vis, PL, photocurrent analysis, and electrochemical impedance spectroscopy were employed to investigate the morphology and structures as well as the optical and electronic properties of the as-prepared samples. The photocatalytic activity of BC-QDs@Bi2 WO6 was assessed by the degradation of antibiotics (tetracycline, ciprofloxacin, and gatifloxacin). The improved photocatalytic activity was attributed to the quantum effect of BC-QDs, which acted as the light harvesting center, electron reservoir, and reaction center for degrading the pollutants. Furthermore, a plausible mechanism for photocatalysis was put forward according to the ESR and quenching experiments. The present work can have significant advantages in the construction of biomass carbon-based photocatalysts in pollutant degradation and improved light utilization.