%0 Journal Article %A CAO Manli %A CHEN Xiaoli %A HUO ZhaoHui %A QIU Yanxuan %A SHI Lei %A YANG Xiaoshan %A YIN Wei %A ZHANG Gang %T Preparation of Ag/Two-Dimensional Graphitic Carbon Nitride/Reduced Graphene Oxide Composite and Its Photocatalytic Degradation of Antibiotics %D 2020 %R 10.11944/j.issn.1000-0518.2020.04.190247 %J Chinese Journal of Applied Chemistry %P 471-480 %V 37 %N 4 %X

In order to optimize the structure of graphitic carbon nitride (g-C3N4) photocatalyst and improve its degradation performance to pollutants, two-dimensional graphitic carbon nitride (2D-C3N4) was prepared by high temperature calcination and thermal oxidation stripping with melamine as the precursor. Ag/2D-C3N4/rGO(reduced graphene oxide) composite photocatalyst was synthesized by photoreduction method. The material obtained was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), photoluminescence spectroscopy (PL), X-ray photoelectron spectroscopy (XPS) and nitrogen adsorption desorption isotherm curve (BET). Taking ceftriaxone sodium as the target pollutant, the effects of pH, catalyst dosage and initial concentration of ceftriaxone sodium on the adsorption and degradation properties of the catalyst were investigated, and the degradation reaction mechanism was explored. When pH=6.0, the amount of catalyst is 0.3 g/L, and the initial concentration of ceftriaxone sodium is 10 mg/L, the degradation rate of ceftriaxone sodium can reach 89.1%. The catalyst has strong stability and can be used for treating wastewater containing cephalosporin antibiotics.

%U http://yyhx.ciac.jl.cn/EN/10.11944/j.issn.1000-0518.2020.04.190247