Photocatalytic Degradation of Various Dyes by Strontium Titanate Nanoparticles

Tao Xian; Hua Yang

doi:10.4028/www.scientific.net/AMR.418-420.18

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 418-420Photocatalytic Degradation of Various Dyes by...

Photocatalytic Degradation of Various Dyes by Strontium Titanate Nanoparticles

Abstract:

A simple polyacrylamide gel method was used to prepare strontium titanate (SrTiO₃) nanoparticles. X-ray diffraction (XRD) analysis reveals that single-phase SrTiO₃ can be synthesized at a calcination temperature of 550 °C. Scanning electron microscope (SEM) observation shows that the as-prepared SrTiO₃ particles are regularly shaped like spheres and highly uniform in size with an average diameter of ~55 nm. Ultraviolet (UV)-visible diffuse reflectance spectrum analysis indicates that the bandgap of the sample is 3.23 eV. The Brunauer-Emmett-Teller (BET) specific surface area of the sample is measured, by the N2 adsorption-desorption technique, to be 26.4 m²•g⁻¹. The photocatalytic experiments reveal that the SrTiO₃ nanoparticles can effectively degrade various dyes including congo red (CR), rhodamine B (RhB), methyl orange (MO), and methylene blue (MB) under UV irradiation.

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Materials Processing Technology, ICAMMP2011

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Advanced Materials Research (Volumes 418-420)

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18-21

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https://doi.org/10.4028/www.scientific.net/AMR.418-420.18

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Online since:

December 2011

Authors:

Tao Xian, Hua Yang

Keywords:

Nanoparticle, Photocatalytic Activity, SrTiO₃

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