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Paper Information

Journal:   JOURNAL OF ULTRAFINE GRAINED AND NANOSTRUCTURED MATERIALS   JUNE 2017 , Volume 50 , Number 1; Page(s) 43 To 50.
 
Paper: 

PHOTOCATALYTIC DECOLORIZATION OF METHYL ORANGE BY SILICA-SUPPORTED TIO2 COMPOSITES

 
 
Author(s):  GHORBANPOUR MOHAMMAD*, YOUSOFI MEHRAN, LOTFIMAN SAMANEH
 
* 1CHEMICAL ENGINEERING DEPARTMENT, UNIVERSITY OF MOHAGHEGH ARDABILI, ARDABIL, IRAN
 
Abstract: 

Immobilization of TiO2 on silica gel has been proposed to enable easy separation of the catalyst in aqueous systems after photocatalytic reaction. Our simple synthesizing method reduces production cost, and the photocatalyst could find economical application in wastewater treatment. Silica-supported TiO2 composites were prepared by molten salt method at 500, 600 and 700 °C for 60 min. The obtained samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), diffuse reflectance spectroscopy and X-ray fluorescence. SEM results showed a heterogeneous surface covered with spherical particles. According to XRD findings, the only phase of the prepared TiO2/SG nanocomposites at all temperatures was pure anatase. The average crystallite size of anatase was roughly 25, 42, 44 and 53 nm for nanocomposites prepared at 550, 600, 700 and 800 °C, respectively. The samples taken at 500 and 600 ?C showed a band gap value of 2.98 eV, and for sample synthesized at 700 ?C the band gap was 2.95 eV. The decolorization activity has been evaluated by Methyl orange (MO) oxidation in liquid phase. The results showed that the sample obtained at 700 °C had the highest photocatalytic decolorization efficiency activity, and the sample prepared at 500 °C had the lowest. The decolorization activity of photocatalyst prepared at 700 °C did not change during stability experiment.

 
Keyword(s): SILICA-SUPPORTED TIO2, NANOCOMPOSITES, MOLTEN SALT METHOD, PHOTOCATALYST
 
 
References: 
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Click to Cite.
APA: Copy

GHORBANPOUR, M., & YOUSOFI, M., & LOTFIMAN, S. (2017). PHOTOCATALYTIC DECOLORIZATION OF METHYL ORANGE BY SILICA-SUPPORTED TIO2 COMPOSITES. JOURNAL OF ULTRAFINE GRAINED AND NANOSTRUCTURED MATERIALS, 50(1), 43-50. https://www.sid.ir/en/journal/ViewPaper.aspx?id=570864



Vancouver: Copy

GHORBANPOUR MOHAMMAD, YOUSOFI MEHRAN, LOTFIMAN SAMANEH. PHOTOCATALYTIC DECOLORIZATION OF METHYL ORANGE BY SILICA-SUPPORTED TIO2 COMPOSITES. JOURNAL OF ULTRAFINE GRAINED AND NANOSTRUCTURED MATERIALS. 2017 [cited 2021May09];50(1):43-50. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=570864



IEEE: Copy

GHORBANPOUR, M., YOUSOFI, M., LOTFIMAN, S., 2017. PHOTOCATALYTIC DECOLORIZATION OF METHYL ORANGE BY SILICA-SUPPORTED TIO2 COMPOSITES. JOURNAL OF ULTRAFINE GRAINED AND NANOSTRUCTURED MATERIALS, [online] 50(1), pp.43-50. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=570864.



 
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