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Abstrakty
TiO2 was surface modified with silver, gold and platinum ion clusters to improve its photocatalytic activity. The effect of metal content, the kind of dopant and titanium dioxide source (commercial - P25 and ST-01) used during preparation procedure on photoactivity were investigated. The photocatalytic activity was estimated by measuring the decomposition rate of 0.21 mM phenol aqueous solution under UV-Vis and visible (λ > 400 nm). The highest photoactivity was observed for TiO2 loaded with silver (2%Ag on P25), gold (1%Au on P25) and platinum (0.5% Pt on ST-01) clusters. After 60 min. of irradiation under UV light phenol solution was degraded in 91%, 49% and 91%, respectively
Słowa kluczowe
Rocznik
Tom
Strony
29-38
Opis fizyczny
Bibliogr. 15 poz.
Twórcy
autor
autor
autor
- Department of Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, Gdańsk, Poland, egrab@chem.pg.gda.pl
Bibliografia
- [1] FUJISHIMA A,.RAO T.N., TRYK D.A., (2000) Titanium dioxide photocatalysis J. Photochem. Photobiol. C 1, 1-21
- [2] KITANO M., TEKAUCHI M., MATSUOKA M., THOMAS J.M., ANPO M., (2007) Photocatalytic water splitting using Pt-loaded visible light-responsive TiO2 thin film photocatalysts Catal. Today 120, 133-138
- [3] KUMAR S., FEDOROV A.G., GOLE J.L. (2005) Photodegradation of ethylene using visible light responsive surfaces prepared from titania nanoparticle slurries Appl. Catal. B 57, 93-107
- [4] DAMM C., IZRAEL G.,(2007) Photoelectric properties and photocatalytic activity of silver-coated titanium dioxides Dyes Pigments 75, 612-618
- [5] ORLOV A., JEFFERSON D. A., MACLEOD N., LAMBERT R. M. (2004) Photocatalytic properties of TiO2 modified with gold nanoparticles in the degradation of 4-chlorophenol in aqueous solution Catal. Lett. 92 1, 41-47
- [6] HWANG S., LEE M. C., CHOI W., (2003) Highly enhanced photocatalytic oxidation of CO on titania deposited with Pt nanoparticles: kinetics and mechanism Appl. Catal., B, 46, 49-63
- [7] CHAO H. E., YUN Y. U., XINGFANG H. U., LARBOT A.,., (2003) Effect of silver doping on the phase transformation and grain growth of sol-gel titania powder J. Eur. Ceram. Soc 23, 1457-1464
- [8] TORIMOTO T., NAKAMURA N., IKEDA S., OHTANI B., (2002) Discrimination of the active crystalline phases in anatase–rutile mixed titanium(IV) oxide photocatalysts through action spectrum analyses Phys. Chem. Chem. Phys. 4, 5910-5914
- [9] ZHU Y., QIAN Y., HUANG H., ZHANG M., LIU S., (1996) Sol-gel γ-radiation synthesis of titaniasilver nanocomposites Mater. Lett., 28, 259-261
- [10] EL-AZAB A., GAN S, LIANG Y., (2002) Binding and diffusion of Pt nanoclusters on anatase TiO2(0 0 1)-(1 x 4) surface Surf. Sci., 506, 93-104
- [11] LONGONI, G.; CHINI, P. (1976) Synthesis and Chemical Characterization of Platinum Carbonyl Dianions [Pt3(CO)3(m-CO)3]n2- (n=10,6,5,4,3,2,1). A New Series of Inorganic Oligomers J. Am. Chem. Soc. 98, 7225-7231
- [12] TREGUER M., REMITA H., BELLONI J., KEYZER R., (2002) Carbonyl platinum clusters as silver halide dopant for photographic latent image formation. J. Imaging Sci. Technol. 46, 193-199
- [13] BELLONI J., TREGUER M., REMITA H., DE KEYZER R., (1999) Enhanced yield of photoinduced electrons in doped silver halide crystals Nature 402, 865-867
- [14] KOWALSKA E., REMITA H, COLBEAU-JUSTIN C., HUPKA J, BELLONI J. (2008) Modification of Titanium Dioxide with Platinum Ions and Clusters: Application in Photocatalysis J. Phys. Chem. C 112. 1124-1131
- [15] BURGETH G., KISCH H., (2002) Photocatalytic and photoelectrochemical properties of titania–chloroplatinate(IV) Coord. Chem. Rev. 230, 41-47
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT6-0013-0027