title: Facile Photochemical Synthesis of Au/Pt/g-C3N4 with Plasmon-Enhanced Photocatalytic Activity for Antibiotic Degradation.
abstract: A novel plasmonic photocatalyst, Au/Pt/g-C3N4, was prepared by a facile calcination-photodeposition technique. The samples were characterized by X-ray diffraction, energy-dispersive spectroscopy, transmission electron microscopy, and UV-vis diffuse reflectance spectroscopy, and the results demonstrated that the Au and Pt nanoparticles (7-15 nm) were well-dispersed on the surfaces of g-C3N4. The Au/Pt codecorated g-C3N4 heterostructure displayed enhanced photocatalytic activity for antibiotic tetracycline hydrochloride (TC-HCl) degradation, and the degradation rate was 3.4 times higher than that of pure g-C3N4 under visible light irradiation. The enhancement of photocatalytic activity could be attributed to the surface plasmon resonance effect of Au and electron-sink function of Pt nanoparticles, which improve the optical absorption property and photogenerated charge carriers separation of g-C3N4, synergistically facilitating the photocatalysis process. Finally, a possible photocatalytic mechanism for degrading TC-HCl by Au/Pt/g-C3N4 heterostructure was tentatively proposed.
authors.affiliation: †School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China.|‡Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Nanjing 211189, People's Republic of China.
authors.forename: Jinjuan
authors.initials: J
authors.lastname: Xue
authors.affiliation: †School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China.|‡Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Nanjing 211189, People's Republic of China.
authors.forename: Shuaishuai
authors.initials: S
authors.lastname: Ma
authors.affiliation: †School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China.|‡Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Nanjing 211189, People's Republic of China.
authors.forename: Yuming
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: †School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China.|‡Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Nanjing 211189, People's Republic of China.
authors.forename: Zewu
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: †School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China.|‡Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Nanjing 211189, People's Republic of China.
authors.forename: Man
authors.initials: M
authors.lastname: He
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry*; D002384:Catalysis / Q000528:radiation effects; D006046:Gold / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D007700:Kinetics; D008027:Light; D053761:Nanocomposites / Q000737:chemistry / Q000648:ultrastructure; D009570:Nitriles / Q000737:chemistry*; D055668:Photochemical Processes; D056951:Photoelectron Spectroscopy; D010984:Platinum / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D014961:X-Ray Diffraction
chemical_list: D000900:Anti-Bacterial Agents; D009570:Nitriles; D010984:Platinum; C011206:cyanogen; D006046:Gold; D006108:Graphite
keywords: Au/Pt/g-C3N4; photocatalytic activity; plasmonic photocatalyst; visible light