Structural and textural features of TiO2/SAPO-34 nanocomposite prepared by the sol–gel method

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Title: Structural and textural features of TiO2/SAPO-34 nanocomposite prepared by the sol–gel method
Authors: Bellatreche, Salima | Hasnaoui, Abdelkrim | Boukoussa, Bouhadjar | García Aguilar, Jaime | Berenguer-Murcia, Ángel | Cazorla-Amorós, Diego | Bengueddach, Abdelkader
Research Group/s: Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: TiO2 | SAPO-34 | TiO2/zeolite | Sol–gel preparation | Methylene blue | Photocatalysis
Knowledge Area: Química Inorgánica
Issue Date: Dec-2016
Publisher: Springer Science+Business Media Dordrecht
Citation: Research on Chemical Intermediates. 2016, 42(12): 8039-8053. doi:10.1007/s11164-016-2577-9
Abstract: This paper focuses on the synthesis of nanocomposite materials, TiO2/SAPO-34, using the sol–gel method, which involves preparing a mixture between as-synthesized or calcined SAPO-34 zeolite and TiO2 gel under hydrothermal crystallization and then calcining it at 400 °C for the formation of the TiO2 anatase phase. The structural and textural features of the obtained materials were determined by various physico-chemical techniques such as thermogravimetric analysis, X-ray diffraction, scanning electronic microscopy, nitrogen sorption at 77 K, energy dispersive X-ray analysis and ultraviolet–visible spectrometry. The DRX results showed that calcination at 400 °C of the mixture between the calcined SAPO-34 and TiO2 gel led to the collapse of the original framework of zeolite, but formed the anatase TiO2 in a nano-spherical morphology; however, the use of as-synthesized SAPO-34 supports provides a mixture phase between SAPO-34 and TiO2 anatase after calcination. The photocatalytic properties of the SAPO-34/TiO2 and TiO2-type materials were tested for the removal of methylene blue (MB) dye. The MB degradation proved to increase as a function of contact time, catalyst mass and the initial concentration of MB.
Sponsor: The authors thank Generalitat Valenciana (PROMETEOII/2014/010) for financial support.
URI: http://hdl.handle.net/10045/62190
ISSN: 0922-6168 (Print) | 1568-5675 (Online)
DOI: 10.1007/s11164-016-2577-9
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Springer Science+Business Media Dordrecht 2016. The final publication is available at Springer via http://dx.doi.org/10.1007/s11164-016-2577-9
Peer Review: si
Publisher version: http://dx.doi.org/10.1007/s11164-016-2577-9
Appears in Collections:INV - MCMA - Artículos de Revistas

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