Using the principal component analysis method in studies of the TiO2 Raman spectra

Radosław Belka

doi:10.1117/12.2279987

7 August 2017 Using the principal component analysis method in studies of the TiO₂ Raman spectra

Radosław Belka

Author Affiliations +

Proceedings Volume 10445, Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2017; 104454Q (2017) https://doi.org/10.1117/12.2279987
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2017, 2017, Wilga, Poland

Abstract

Raman spectra of TiO₂ anatase prepared by sol-gel method were measured and analyzed by Principal Component Analysis (PCA) method. The pure and Ag-doped powder samples of TiO₂ were prepared in different routes and calcined in air at the same temperature of 550°C. For every sample, nine spectra were measured using microRaman Nicolet Almega XR spectrometer at 532nm excitation and 6mW input beam power. The spectra were processed by PCA algorithm by means of PCA Model Editor and Analysis software (Jasco). Analysis shows the difference between commercially available anatase (Sigma Aldrich) and samples prepared in sol-gel method. The PCA coefficients can be easily separated in PCs space. The components related to the anatase and rutile phases were also extracted. Moreover, spectra of Ag-doped anatase can be clearly distinguished. It was shown the PCA method is useful for classification of anatase samples prepared in different technology conditions.

Citation Download Citation

Radosław Belka, Radosław Belka, } "Using the principal component analysis method in studies of the TiO₂ Raman spectra", Proc. SPIE 10445, Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2017, 104454Q (7 August 2017); doi: 10.1117/12.2279987; https://doi.org/10.1117/12.2279987

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