Preparation of Calcium Zirconate –Silica nano composite and consideration of thermal, electrical and photocatalitical properties


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In this research, Calcium Zirconate–Silica nanocomposite was synthesized and its thermal, electrical constant and photocatalitical properties were evaluated. For preparation of CaZrO3/SiO2, nano powder was synthesized by sol-gel method then was calcinated at 700- 1000 ºC. Then nanocomposite was synthesized by adding of processing micro silica. The resultant of nano composite and nano powder characterized by XRD , FT-IR , SEM and EDX techniques with 5-20 weight percent of micro silica in sol-gel method and it was calcinated at 700- 1000 ºC . The results showed that by increasing the calcium zirconate phase to the silica matrix, the thermal expansion decreases from 15.96×10-6 1/°C to 10.26×10-6 1/°C. Also the dielectric constant increased from 3.9 for pure silica to 5.6 for silica- 20 % wt calcium zirconate nanocomposite. Photocatalitical activity of nanocomposit by dye degradation of methylen blue under UV light was improved from 80% to 95% in various pH and room temperature.

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Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2013: Advanced Materials, CNTs, Particles, Films and Composites (Volume 1)
Published: May 12, 2013
Pages: 522 - 525
Industry sector: Advanced Materials & Manufacturing
Topics: Advanced Materials for Engineering Applications, Composite Materials
ISBN: 978-1-4822-0581-7