Sol-gel synthesis, characterization and photocatalytic activity of mixed oxide ZnO-Fe2O3

Author： Hernández Aracely   Maya Lourdes   Sánchez-Mora Enrique   Sánchez Eduardo  

Publisher： Springer Publishing Company

ISSN： 0928-0707

Source： Journal of Sol-Gel Science and Technology, Vol.42, Iss.1, 2007-04, pp. : 71-78

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

Synthesis by sol-gel method of mixed semiconductor ZnO-Fe2O3 was carried out using inorganic salts as precursors. The powders were synthesized at different pH (neutral and basic) in order to study its influence on the properties of the catalysts. These materials were characterized by thermal analysis TGA-DTA, X-ray Diffraction, FTIR spectroscopy, scanning electron microscopy and X-ray energy dispersive spectroscopy. The specific surface area of the solids was calculated from nitrogen adsorption isotherms by BET method. The band gap energy (E g ) of the catalysts was obtained from it UV-Vis spectra (diffuse reflectance) when the crystalline phase was formed under thermal treatment at 350°C by 3 h. The incorporation of Fe2O3 to ZnO semiconductor gives as a result a lower E g value for zinc oxide. Catalytic activity of the materials was evaluated using as test reaction the photocatalytic degradation of potassium cyanide in aqueous dissolution. The catalyst ZnO-Fe2O3 synthesized at pH 7 turned out to be superior than sol-gel and commercial ZnO under similar conditions.

Related content

Synthesis and characterization of Fe doped mesoporous Al2O3 by sol–gel method and its use in trichloroethylene combustion

By Lucio-Ortiz Carlos   Rosa Javier   Ramirez Aracely   Reyes Heredia Jose   Angel Paz   Muñoz-Aguirre Severino   León-Covián Lina  

Journal of Sol-Gel Science and Technology, Vol. 58, Iss. 2, 2011-05 ,pp. : 374-384 (11)

Springer Publishing Company

Access to resources Recommend Favorite

Visible light photocatalytic activity and Photoelectrochemical property of Fe-doped TiO2 hollow spheres by sol–gel method

By Lin Xiaoxia   Rong Fei   Ji Xiang   Fu Degang  

Journal of Sol-Gel Science and Technology, Vol. 59, Iss. 2, 2011-08 ,pp. : 283-289 (7)

Springer Publishing Company

Access to resources Recommend Favorite

Synthesis, characterization, and catalytic activity in the n-heptane conversion over Pt/In–Al2O3 sol–gel prepared catalysts

By Rodríguez-González V.   Gómez R.   Moscosa-Santillan M.   Amouroux J.  

Journal of Sol-Gel Science and Technology, Vol. 42, Iss. 2, 2007-05 ,pp. : 165-171 (7)

Springer Publishing Company

Access to resources Recommend Favorite

Sol–Gel Synthesis of Na2O-Al2O3-P2O5 Glasses and their Characterization by NMR, SNMS, and AFM

By Helsch Gundula   Hoyer Lars   Frischat Günther   Zhang Long   Eckert Hellmut  

Journal of Sol-Gel Science and Technology, Vol. 33, Iss. 3, 2005-03 ,pp. : 341-345 (5)

Springer Publishing Company

Access to resources Recommend Favorite