Immobilized Ag3PO4/GO on 3D nickel foam and its photocatalytic degradation of norfloxacin antibiotic under visible light. Issue 8 (27th January 2020)

• Record Type: Journal Article
• Authors: Ji, Bang; Zhao, Wenfeng; Duan, Jieli; Fu, Lanhui; Ma, Lizhe; Yang, Zhou
• Is Part Of: RSC advances. Volume 10:Issue 8(2020)
• Page Start: 4427
• Page End: 4435
• Publication Date: 2020-01-27
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c9ra08678a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A series of Ag3 PO4 /graphene oxide catalysts were dip-coated onto 3D nickel foam for photocatalytic degradation of norfloxacin antibiotics. Abstract : In this study, a series of Ag3 PO4 /graphene oxide (GO) films were dip-coated on a metal nickel foam. The immobilized catalysts were characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, ultraviolet-visible spectroscopy, Raman spectroscopy, high-resolution transmission electron microscopy and photoluminescence spectroscopy. The results show that Ag3 PO4 /GO was successfully supported on a nickel foam. The photocatalytic activity of the film catalyst under visible light was investigated by the degradation of norfloxacin, an antibiotic. Photocatalytic stability of this catalyst was also investigated. An optimized film exhibited superior activity and stability, the degradation rate of norfloxacin was about 83.68% in 100 min and the reaction rate constant k was 1.9 times that of pristine Ag3 PO4 . Further investigation found that photo-generated holes (h + ) and superoxide anion radicals (·O2 − ) are the main active species in the photodegradation process. The result indicates that the addition of GO inhibits the recombination of photogenerated electron–hole pairs, and thus has improved the photocatalytic activity and cyclic stability under visible light. The photocatalytic mechanism of the film catalyst was proposed. The prepared Ag3 PO4 /GO film catalyst is a promising candidate for treatment of wastewater containing antibiotics.