Characterization And Photocatalytic Activity Of Rare Earth Metal-Doped Titanium Dioxide

• Autorzy: Reszczynska J. , Iwulska A. , Sliwinski G. , Zaleska A.
• Języki publikacji: EN

Abstrakty

EN

The aim of this research was to prepare rare metal (Er, Yb)-modified TiO2 nanoparticles by a sol-gel method. The obtained nanoparticles were characterized by BET measurements, UV-Vis spectra and the Laser-induced fluorescence (LIF) method. Visible light photocatalytic activity of the sample was studied by photodegradation of phenol while considering the influence of the dopant concentration. The obtained results showed that a smaller amount of the dopant gave better photocatalytic activity of a semiconductor. The absorption spectra of Yb3+-doped and Er3+-TiO2 samples show stronger absorption in the UV-Vis region than pure TiO2. The presence of erbium was found more beneficial for visible light activation of TiO2 doped photocatalysts than ytterbium.

Słowa kluczowe

EN

photocatalysis; rare earth metal; modified TiO2; luminescence

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2012
• Tom: Vol. 48, iss. 1
• Strony: 201--208
• Opis fizyczny: Bibliogr. 24 poz.

Twórcy

autor

Reszczynska J.

autor

Iwulska A.

autor

Sliwinski G.

autor

Zaleska A.

• Department of Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland,

Bibliografia

• 1. ASAHI R., MORIKAWA T., OHWAKI T., AOKI K., TAGA Y., 2001, Visible-light photocatalysis in nitrogen-doped titanium oxides, Science 293, 269–271.
• 2. BAKARAT M.A., CHEN Y.T., HUANG C.P., 2004, Removal of Toxic Cyanide and Cu(II) Ions from Water by Illuminated TiO2 Catalyst, Appl. Catal. B 53, 13–20.
• 3. CACCIOTTI I., BIANCO A., PEZZOTTI G., GUSMANO G., 2011, Terbium and ytterbium-doped titania luminescent nanofibers by means of electrospinning technique, Mat. Chem. Phys. 126, 532–541.
• 4. CHATTERJEE D., MAHATA A., 2001, Demineralization of organic pollutants on the dye modified TiO2 semiconductor particulate system using visible light, Appl. Catal. B Environ. 33, 119–125.
• 5. FENG G., LIU S., XIU Z., ZHANG Y., YU J., CHEN Y., WANG P., YU X., 2008, Visible light photocatalytic activities of TiO2 nanocrystals doped with up-conversion luminescence agent, J. Phys. Chem. C 112, 13692–13699.
• 6. FUJISHIMA A., RAO T.N., TRYK D.A., 2000, Titanium dioxide photocatalysis, J. Photochem. Photobiol. C: Photochem. Rev. 1, 1–21.
• 7. GAO J., LUAN X., WANG J., WANG B., LI K., LI Y., KANG P., HAN G., 2011, Preparation of Er3+:YAlO3/Fe-doped TiO2-ZnO and its application in photocatalytic degradation of dyes under solar light irradiation, Chem. Eng. J. 268, 68–75.
• 8. HIRAI T., SUZUKI K., KOMASAWA I., 2001, Preparation and photocatalytic properties of composite CdS nanoparticles-titanium dioxide particles, J. Colloid Interface Sci. 244 , 262–265.
• 9. HOFFMANN M.R., MARTIN S.T.,CHOI W., BAHNEMANN D.W., 1995, Environmental applications of semiconductor photocatalysis, Chem. Rev. 95 , 69–96.
• 10. JANUS M., MORAWSKI A.W., 2007, New method of improving photocatalytic activity of commercial Degussa P25 for azo dyes decomposition, Appl. Catal. B 75, 118-–123.
• 11. KHAN S.U., AL-SHAHRY M., INGLER W.B. JR., 2002, Efficient photochemical water splitting by a chemically modified n-TiO2, Science 297, 2243–2245.
• 12. KOROSI L., DEKANY I., 2006, Preparation and investigation of structural and photocatalytic properties pof phosphate modified titanium dioxide, Colloids Surf., A 280, 146–154.
• 13. LIN J., YU J.C., 1998, An investigation on photocatalytic activities of mixed TiO2-rare earth oxides for the oxidation of acetone in air, J. Photochem. Photobiol. A: Chem. 116, 63–67.
• 14. NAKAMURA I., NEGISHI N., KUTSUNA S., IHARA T., SUGIHARA S., TAKEUCHI K., 2000, Role of oxygen vacancy in the plasma-treated TiO2 photocatalyst with visible light activity for NO removal, J. Mol. Catal. A: Chem. 161, 205–212.
• 15. OHNO T, MITSUI T., MATSUMURA M., 2003, Photocatalytic activity of S-doped TiO2 photocatalyst under visible light, Chem. Lett. 32, 364–365.
• 16. PANG S., LI X., SHI Z., YANG G., CUI Z., 2010, Preparation and characterization of sol-gel derived Er3+–Yb3+ codoped SiO2/TiO2 core-shell nanoparticles, Mat. Lett. 64, 846–848.
• 17. SHANG Q., YU H., KONG X., WANG H., WANG X., SUN Y., ZHANG Y., ZENG Q., 2008, Green and red up-conversion emissions of Er3+–Yb3+ Co-doped TiO2 nanocrystals prepared by sol–gel method. J. Lumin. 128, 1211–1216.
• 18. TAN S.S., ZOU L., HU E., 2006, Photocatalytic reduction of carbon dioxide into gaseous hydrocarbon using TiO2 pellets, Cataly. Tod. 115, 269–273.
• 19. TEH C.M., MOHAMED A.R., 2011, Roles of titanium dioxide and ion-doped titanium dioxide on photocatalytic degradation of organic pollutants (phenolic compounds and dyes) in aqueous solutions: A review, J. All. Comp. 509 , 1648-1660.
• 20. WANG J., LI R., ZHANG Z., SUN W., XU R., XIE Y., XING Z., ZHANG X., 2007a, Efficient photocatalytic degradation of organic dyes over titanium dioxide coating upconversion luminescence agent under visible and sunlight irradiation, Appl. Cat. A, Gen. 334, 227–233.
• 21. WANG J., MA T., ZHANG G., ZHANG Z., ZHANG X., JIANG Y., ZHAO G., ZHANG P., 2007b, Preparation of novel nanometer TiO2 catalyst doped with upconversion luminescence agent and investigation on degradation of acid red B dye using visible light, Cat. Comm. 8, 607–611.
• 22. WANG J., WEN F.Y., ZHANG Z.H., ZHANG X.D., PAN Z.J., ZHANG P., KANG P.L., TONG J., WANG L., XU L., 2006, Investigation on degradation of dyestuff wastewater using visible light in the presence of a novel nano TiO2 catalyst doped with upconversion luminescence agent, J. Photochem. Photobiol., A: Chem. 180, 189–195.
• 23. YANG Z., ZHU K., SONG Z., ZHOU D., YIN Z., QIU J., 2011, Preparation and upconversion emission properties of TiO2:Yb, Er inverse opals, Sol. Stat. Comm. 151, 364–367.
• 24. ZALESKA A., SOBCZAK J.W., GRABOWSKA E., HUPKA J., 2007, Preparation and photocatalytic activity of boron-modified TiO2 under UV and visible light, Appl. Catal. B 78, 92–100.