title: Efficient photocatalytic degradation of tetracycline hydrochloride by Ag3PO4 under visible-light irradiation.
abstract: A facile, environmental-friendly Ag3PO4-PN photocatalyst was synthesized by a simple precipitation method at room temperature in the presence of ammonia and polyvinyl pyrrolidone (PVP). As-synthesized samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-visible diffuse reflectance spectroscopy (UV-vis DRS). The enhancement of photocatalytic efficiency of Ag3PO4-PN is strongly dependent on the excellent photo-absorption capacity, sharp edges and corners, and synergistic effect of PVP and NH3·H2O. The effects of catalyst dosage, TC concentration and solution pH were explored with tetracycline hydrochloride (TC) as target contamination. The mineralization was evaluated by total organic carbon (TOC) analysis and determination of the concentration of inorganic ions such as NO3 (-) and Cl(-). Radical detection experiment indicated the h(+) and ·O(2-) are major active species in the degradation of TC by Ag3PO4-PN. Moreover, photocatalyst stability and regeneration experiments exhibited the favorable stability and rejuvenation ability, suggesting a promising prospect of practical application of Ag3PO4 in the wastewater treatment.
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China. yanqishezzu@163.com.
authors.forename: QiShe
authors.initials: Q
authors.lastname: Yan
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China.
authors.forename: MengMeng
authors.initials: M
authors.lastname: Xu
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China.
authors.forename: CuiPing
authors.initials: C
authors.lastname: Lin
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China.
authors.forename: JiFei
authors.initials: J
authors.lastname: Hu
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China.
authors.forename: YongGang
authors.initials: Y
authors.lastname: Liu
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China.
authors.forename: RuiQin
authors.initials: R
authors.lastname: Zhang
mesh_terms: D002384:Catalysis; D008027:Light; D008855:Microscopy, Electron, Scanning; D010710:Phosphates / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D018030:Silver Compounds / Q000737:chemistry*; D013752:Tetracycline / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D010710:Phosphates; D018030:Silver Compounds; D013752:Tetracycline; C039072:silver phosphate
keywords: Ag3PO4; Catalyst regeneration; Photocatalytic reaction; Radical detection; Tetracycline hydrochloride