Synthesis and Infrared Light Reflecting Characteristics of TiO2/Mica Hybrid Composites

이산화 티타늄/마이카 복합 재료의 적외선 광반사 특성

  • Kil, Hyun Suk (Department of Chemistry, Kongju National University) ;
  • Rhee, Seog Woo (Department of Chemistry, Kongju National University)
  • Received : 2015.06.28
  • Accepted : 2015.09.18
  • Published : 2016.02.10


In this work, we describe the synthesis and infrared light reflecting characteristics of $TiO_2$/mica hybrid composites. $TiO_2$/mica composite materials were obtained by the hydrolysis and condensation reaction of titanium isopropoxide in an aqueous solution of acetic acid in the presence of mica particles. Amorphous phase of $TiO_2$ on the surface of mica was converted to the crystalline rutile phase via anatase phase by heat treatment ($600-1000^{\circ}C$, 1-3 h) of $TiO_2$/mica composite materials, and the size of crystals was controlled by heat treatment conditions. Physicochemical properties of mica and $TiO_2$/mica composites were investigated using FE-SEM, ED-XRF, and PXRD. The solar reflectance of $TiO_2$/mica composites in the near IR region (780~2,500 nm) measured using a diffuse reflectance NIR spectrophotometer was 88.6%, which is rather higher than that of calcined pure mica (86.6%). Therefore, $TiO_2$/mica composites can be used as NIR light reflective pigments.


Supported by : 한국연구재단, 한국에너지기술평가원(KETEP)


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