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Facile Photochemical Synthesis of Au/Pt/g-C3N4 with Plasmon-Enhanced Photocatalytic Activity for Antibiotic Degradation
- Source :
- ACS applied materialsinterfaces. 7(18)
- Publication Year :
- 2015
-
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.
- Subjects :
- Materials science
Diffuse reflectance infrared fourier transform
Light
Photoelectron Spectroscopy
Photochemistry
Photochemical Processes
Catalysis
Anti-Bacterial Agents
Nanocomposites
Kinetics
X-Ray Diffraction
Transmission electron microscopy
Nitriles
Photocatalysis
General Materials Science
Graphite
Spectrophotometry, Ultraviolet
Gold
Surface plasmon resonance
Absorption (electromagnetic radiation)
Spectroscopy
Plasmon
Visible spectrum
Platinum
Subjects
Details
- ISSN :
- 19448252
- Volume :
- 7
- Issue :
- 18
- Database :
- OpenAIRE
- Journal :
- ACS applied materialsinterfaces
- Accession number :
- edsair.doi.dedup.....3e73ab03a0dc230551b948d85fb3ed87