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Information Journal Paper

Title

Investigation of calcination temperature on the structural, optical and photocatalytic properties of mesoporous titania nanoparticles

Pages

  69-79

Abstract

 In this study, Mesoporous Titanium dioxide nanoparticles were synthesized by sol-gel method. The effect of Calcination temperature on structural, photocatalytic, and Optical properties of nanoparticles was investigated. Tetrabutylorthotitanate )TBT( was used as a precursor of titanium and ethanol as a solvent. Differential thermal analysis )TG-DTA( for selecting the appropriate temperature range for calcination, phase analysis by X-ray diffraction )XRD(, BET analysis for the specific surface area and porosity of the nanoparticles, spectrophotometric analysis for the study of photocatalytic properties, and scanning electron microscopy structural characteristics including morphology and particle size were used. The results show that by increasing the temperature up to 550 ° C, anatase phase transformation into rutile is performed, and the presence of two crystalline phases improves photocatalytic properties. The band gap energy of Titanium dioxide nanoparticles has decreased with increasing temperature, so that shifted from the ultraviolet range to the visible light range. The highest degradation percentage of ultraviolet radiation was obtained by sample with Calcination temperature of 350 ° C )57. 33%( and was exposed to visible light with a Calcination temperature of 550 ° C )55. 56%(. The results of adsorption analysis indicated the Mesoporous structure with H4 and H2 type hysteresis loop for the samples prepared at 350 ° C and 550 ° C, respectively. The average pore diameters for the samples prepared at 350 ° C and 550 ° C were 1. 20 and 7. 99 nm, respectively. The TEM images indicated that the particle size of the samples prepared at 350 ° C and 550 ° C were 25-30 nm and 30-45 nm, respectively.

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  • Cite

    APA: Copy

    Gorgani, Mahtab, & KOOZEGAR KALEJI, BEHZAD. (2020). Investigation of calcination temperature on the structural, optical and photocatalytic properties of mesoporous titania nanoparticles. JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC), 14(1 ), 69-79. SID. https://sid.ir/paper/411739/en

    Vancouver: Copy

    Gorgani Mahtab, KOOZEGAR KALEJI BEHZAD. Investigation of calcination temperature on the structural, optical and photocatalytic properties of mesoporous titania nanoparticles. JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC)[Internet]. 2020;14(1 ):69-79. Available from: https://sid.ir/paper/411739/en

    IEEE: Copy

    Mahtab Gorgani, and BEHZAD KOOZEGAR KALEJI, “Investigation of calcination temperature on the structural, optical and photocatalytic properties of mesoporous titania nanoparticles,” JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC), vol. 14, no. 1 , pp. 69–79, 2020, [Online]. Available: https://sid.ir/paper/411739/en

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