용매열합성을 이용한 구형 TiO2-SiO2 복합체 제조 및 열적특성
A Synthesis of Spherical Shape TiO2-SiO2 Complex via Solvothermal Process and Thermal Properties at Non-Isothermal
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초록
나노재료 TiO2-SiO2는 2-prOH(2-propanol)를 용매로 사용하여 가수분해와 축합반응으로 제조하였고, FT-IR, DSC, XRD, FE-SEM을 사용하여 TiO2-SiO2의 특성을 조사하였다. FT-lR분석으로부터 Ti-0-Si의 흡수피크에 대해 설명하였으며, DSC분석 결과를 Ozawa 방정식에 적용하여, 결정화에 필요한 활성화 에너지를 계산하였다. 결정학적 특징은 XRD를 이용하여 하소 온도의 변화에 따른 시료의 회절패턴과 반가폭의 변화 등에 관련하여 설명하였다. FE-SEM을 통하여 Ti mol%가 증가할수록 입자크기가 커지는 것을 확인 할 수 있었다.
Abstract
Nanomaterial TiO-SiO was synthesized by hydrolysis and condensation process using 2-propanol(2-PrOH) and was characterized by FT-IR, DSC, XRD and FE-SEM. FT-IR spectra were measured to investigate Ti-O-Si absorption peak. DSC thermal analysis results applied to Ozawa equation were used to calculate to activation energy of crystallization. It was found that the changes of X-ray diffraction patterns and FWHM obtained XRD measurement depended on calcination temperature. In FE-SEM analysis, particle size changed by quantity changes of Ti-alkoxide.
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