Effect of synthesis conditions and calcination on structural properties of TiO2 nanoparticles prepared by sol-gel method

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MEMARIAN N.; MOHAMMADI M.; Neirameh a.

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

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Journal: NANOSCALE Year:2020 | Volume:6 | Issue:4 Page(s): 102-109

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Title

Effect of synthesis conditions and calcination on structural properties of TiO2 nanoparticles prepared by sol-gel method

Author(s)

MEMARIAN N. | MOHAMMADI M. | Neirameh a. | Issue Writer Certificate

Keywords

nanoparticleQ1

sol-gelQ1

titanium dioxideQ2

structural propertiesQ1

phase transitionQ1

Abstract

In this paper nanoparticles of titanium dioxide have been synthesized by sol-gel method. Effect of sol aging time as well as calcination temperature on physical and structural properties of the nanoparticles have been studied by thermal analysis (TG/DTA), x-ray diffraction (XRD), transmission electron microscope (TEM), and statistical analysis of particle size distribution. DTA thermal analysis of the sample shows three weight-loss regions. XRD analysis shows that samples have anatase phase up to 700 º C, but at 800 º C relative phase change to rutile can be seen and nanoparticles have mixed anatase and rutile phases. The samples calcined at 900 º C have pure rutile phase. The results show that by increasing the calcination temperature the size of nanoparticles has increased and the largest crystallite size for anatase phase is obtained 38. 7 nm and 147. 5 nm for rutile phase. Furthermore, aging time has no effect on the crystalline phase of samples. FTIR spectra of the samples indicate the formation of Ti-O and O-Ti-O bonds. Absorption peaks which are related to symmetric and asymmetric C=O bonds have been reduced after calcination and have been lost at higher temperatures. TEM image confirms the nanoparticles are spherical with 13. 2 nm average diameter.

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APA: Copy

MEMARIAN, N., MOHAMMADI, M., & Neirameh, a.. (2020). Effect of synthesis conditions and calcination on structural properties of TiO2 nanoparticles prepared by sol-gel method. NANOSCALE, 6(4 ), 102-109. SID. https://sid.ir/paper/257041/en

Vancouver: Copy

MEMARIAN N., MOHAMMADI M., Neirameh a.. Effect of synthesis conditions and calcination on structural properties of TiO2 nanoparticles prepared by sol-gel method. NANOSCALE[Internet]. 2020;6(4 ):102-109. Available from: https://sid.ir/paper/257041/en

IEEE: Copy

N. MEMARIAN, M. MOHAMMADI, and a. Neirameh, “Effect of synthesis conditions and calcination on structural properties of TiO2 nanoparticles prepared by sol-gel method,” NANOSCALE, vol. 6, no. 4 , pp. 102–109, 2020, [Online]. Available: https://sid.ir/paper/257041/en

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