Synthesis and characterization Au doped TiO2 film for photocatalytic function
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Au doped TiO2 nanoparticles have been synthesized using a reverse micelle technique combined with metal alkoxide hydrolysis and condensation. Au doped TiO2 was coated with glass substrate. The size of the particles and thickness of the coating can be controlled by manipulating the relative rates of the hydrolysis and condensation reaction of TTIP within the micro-emulsion. The average size of synthesized Au doped TiO2 nanoparticle was about in the size range of 15 to 25 nm and the Au particles formed mainly the range of 2 to 10 nm in diameter. The effect of synthesis parameters, such as the molar ratio of water to TTIP and the molar ratio of water to surfactant, are discussed. The synthesized nanopaticles were coated on glass substrate by a spin coating process. The thickness of thin film was about 80 nm. The degradation of MB on a TiO2 thin film was enhanced over 20 % efficiency by the incorporation of Au.
Abstract
Au doped TiO2 nanoparticles have been synthesized using a reverse micelle technique combined with metal alkoxide hydrolysis and condensation. Au doped TiO2 was coated with glass substrate. The size of the particles and thickness of the coating can be controlled by manipulating the relative rates of the hydrolysis and condensation reaction of TTIP within the micro-emulsion. The average size of synthesized Au doped TiO2 nanoparticle was about in the size range of 15 to 25 nm and the Au particles formed mainly the range of 2 to 10 nm in diameter. The effect of synthesis parameters, such as the molar ratio of water to TTIP and the molar ratio of water to surfactant, are discussed. The synthesized nanopaticles were coated on glass substrate by a spin coating process. The thickness of thin film was about 80 nm. The degradation of MB on a TiO2 thin film was enhanced over 20 % efficiency by the incorporation of Au.
참고문헌 (31)
- A. Fujishima, "Titanium dioxide photocatalysis:Present situation and future approaches’", C. R. Chim, 9, pp.750~ (2006)
- X. Chen, "‘Titanium dioxide nanomaterials:synthesis, properties, modifications, and applications’", Chem. Rev, 107, pp.2891~ (2007)
- J.L. Gole, "Highly efficient formation of visible light tunable TiO2 − xNx Photocatalysts and Their Transformation at the Nanoscale", J. Phys. Chem. B, 108, pp.1230~ (2004)
- A. Mills, "Thick titanium dioxide films for semiconductor photocatalysis", J. Photochem. Photobiol., A, 160, pp.185~ (2003)
- G.E. Brown, "Metal oxide surfaces and their interactions with aqueous solutions and microbial organisms", Chem. Rev, 99, pp.77~ (1999)
- S.A. Bilmes, "Surface and electronic structure of titanium dioxide photocatalysts", J. Phys. Chem, 104, pp.9851~ (2000)
- R. Asahi, "Visible-light photocatalysis in nitrogen-doped titanium oxides", Science, 293, pp.269~ (2001)
- Y. Sakatani, "Development of TiO2 photocatalysis with visible light response", Photocatalysis, 4, pp.51~ (2002)
- H. Irie, "Nitrogen-concentration dependence on photocatalytic activity of TiO2 − xNx Powders", J. Phys. Chem. B, 107, pp.5483~ (2003)
- K. Kobayakawa, "Visiblelight active N-doped TiO2 prepared by heating of titanium hydroxide and urea", J. Photochem. Photobiol., A, 170, pp.177~ (2005)
- D. Wang, "Influence of metal plasma ion implantation on photo-sensitivity of anatase TiO2 thin films", Thin Solid Films, 515, pp.1047~ (2006)
- M. Anpo, "Photocatalysis on titanium oxide catalysts:Approaches in achieving highly efficient reactions and realizing the use of visible light", Catal. Surv. Jpn, 1, pp.169~ (1997)
- J. Hodak, "Sensitization of TiO2 with phthalocyanines. Part 1. Photo-oxidations using hydroxoaluminium tricarboxymonoamid-ephthalocyanine adsorbed on TiO2", J. Chem. Soc., Faraday Trans, 92, pp.5081~ (1996)
- Y. Cho, "Visible light-induced degradation of carbon tetrachloride on dye-sensitized TiO2", Environ. Sci. Technol, 35, pp.966~ (2001)
- D. Chatterjee, "Demineralization of organic pollutants on the dye modified TiO2 semiconductor particulate system using visible light", Appl. Catal., B, 33, pp.119~ (2001)
- E. Bae, "Effects of surface anchoring groups (carboxylate vs phosphonate) in ruthenium-complex-sensitized TiO2on visible light reactivity in aqueous suspensions", J. Phys. Chem. B, 108, pp.14093~ (2004)
- H. Fu, "Electron spin resonance spin-trapping detection of radical intermediates in N-doped TiO2-assisted photodegradation of 4-chlorophenol", J. Phys. Chem. B, 110, pp.3061~ (2006)
- K. W. Park, "Influence of Pt nanocrystallinity on electrochromism of TiO2", Inorg. Chem, 44, pp.3190~ (2005)
- J. Sa, "Photoformed electron transfer from TiO2 to metal clusters", Catal. Commun, 9, pp.1991~ (2008)
- Y. M. Tricot, "In situ generated colloidal semiconductor CdS particles in dihexadecyl phosphate vesicles: Quantum size and asymmetry effects", J. Phys. Chem, 90, pp.3369~ (1986)
- N. Ichinose, "Superfine particle technology", pp.27~ (1988), Springer-Verlag
- D. S. Bae, "Synthesis of nanosize SiO2 particles by a reverse micelle and sol-gel processing", J. Korean Cryst. Growth Cryst. Technol, 11, pp.67~ (2001)
- 은종원, "Yb 3+ Er 3+ ions 동시도핑에 의한 TiO2 분말의 열적 안정성 증가효과와 upconversion 특성 연구", 한국결정성장학회지, 20(4), pp.173~177 (2010), 한국결정성장학회
- J. H. Son, "Synthesis and characterization of Ag", Pd doped SiO2 nanoparticles by a reverse micelle and sol-gel processing, 2008, pp.313, 105~
- T. Li, "Preparation of Ag", SiO2 nanosize composites by a reverse micelle and sol-gel technique, 1999, pp.15, 4328~
- S. W. Zhang, "SPR enhanced photocatalytic properties of Au-dispersed amorphous BaTiO3 nanocomposite thin films", J. Alloy Comp, 654, pp.112~ (2016)
- N. Negishi, "Structural changes of transparent TiO2 thin films with heat treatment", Mater. Lett, 38, pp.150~ (1999)
- JeongHoRyu, "Preparation of TiO2 nanopowder using titanium tetra-isopropoxide and effect of pH", 한국결정성장학회지, 12(2), pp.91~95 (2002), 한국결정성장학회
- Y. Zheng, "Ag", ZnO heterostructure nanocrystals: synthesis, characterization, and photocatalysis, 2007, pp.46, 6980~
- T. Hirakawa, "Charge separation and catalytic activity of Ag@TiO2 core-shell composite clusters under UV-irradiation", J. Am. Chem. Soc, 127, pp.3928~ (2005)
- S. Zhu, "Effect of Au supported TiO2 with dominant exposed {0 0 1} facets on the visible-light photocatalytic activity", Appl. Catal. B Environ, 119, pp.146~ (2012)