DEPENDENCE OF PHOTOCATALYTIC ACTIVITY OF TIO2-SIO2 NANOPOWDERS

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RIAZIAN MEHRAN

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

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Journal: JOURNAL OF NANOSTRUCTURES Year:2014 | Volume:4 | Issue:4 Page(s): 433-441

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Information Journal Paper

Title

DEPENDENCE OF PHOTOCATALYTIC ACTIVITY OF TIO2-SIO2 NANOPOWDERS

Author(s)

RIAZIAN MEHRAN | Issue Writer Certificate

Keywords

NANOSTRUCTUREQ2

PHOTOCATALYTIC ACTIVITYQ2

SIO2-TIO2Q2

SOL-GEL METHODQ2

Abstract

Structural properties and chemical composition change the PHOTOCATALYTIC ACTIVITY in TiO2-SiO2 nanopowder composite. The SiO2-TiO2 NANOSTRUCTURE is synthesized based on SOL-GEL METHOD.The nanoparticles are characterized by x-ray fluorescents (XRF), xray diffraction (XRD), tunneling electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), UV-vis.Spectrophotometer and furrier transmission create infrared absorption (FTIR) techniques. The rate constant k for the degradation of methylen blue in its aqueous solution under UV irradiation is determined as a measure of PHOTOCATALYTIC ACTIVITY.Dependence between PHOTOCATALYTIC ACTIVITY and SiO2 content in the composite is determined. Rate constant k is found dependent on the content of SiO2 in the composite that calcined at 900oC. The addition of low composition SiO2 to the TiO2 matrix (lower than 45%) enhances the PHOTOCATALYTIC ACTIVITY due to thermal stability and increasing in the surface area. The effects of chemical compositions on the surface topography and the crystallization of phases are studied.

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APA: Copy

RIAZIAN, MEHRAN. (2014). DEPENDENCE OF PHOTOCATALYTIC ACTIVITY OF TIO₂-SIO₂ NANOPOWDERS. JOURNAL OF NANOSTRUCTURES, 4(4), 433-441. SID. https://sid.ir/paper/210913/en

Vancouver: Copy

RIAZIAN MEHRAN. DEPENDENCE OF PHOTOCATALYTIC ACTIVITY OF TIO₂-SIO₂ NANOPOWDERS. JOURNAL OF NANOSTRUCTURES[Internet]. 2014;4(4):433-441. Available from: https://sid.ir/paper/210913/en

IEEE: Copy

MEHRAN RIAZIAN, “DEPENDENCE OF PHOTOCATALYTIC ACTIVITY OF TIO₂-SIO₂ NANOPOWDERS,” JOURNAL OF NANOSTRUCTURES, vol. 4, no. 4, pp. 433–441, 2014, [Online]. Available: https://sid.ir/paper/210913/en

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