CAJ | 학술논문

介孔材料由于具有独特的孔结构在不同领域得到了广泛的应用。采用溶胶-凝胶法制备介孔TiO 2粉体，利用 N2吸附-脱附法表征 TiO 2粉体的比表面积、比孔容和孔径分布，用 X 射线衍射法表征 TiO 2粉体的物相和晶粒尺寸，研究了干燥温度、焙烧温度和保温时间对 TiO 2粉体微结构的影响。研究结果表明，制备介孔 TiO 2粉体存在最佳干燥温度；焙烧温度升高和保温时间延长均使介孔 TiO 2粉体的平均孔径增大、比表面积和比孔容下降。
개공재료유우구유독특적공결구재불동영역득도료엄범적응용。채용용효-응효법제비개공TiO 2분체，이용 N2흡부-탈부법표정 TiO 2분체적비표면적、비공용화공경분포，용 X 사선연사법표정 TiO 2분체적물상화정립척촌，연구료간조온도、배소온도화보온시간대 TiO 2분체미결구적영향。연구결과표명，제비개공 TiO 2분체존재최가간조온도；배소온도승고화보온시간연장균사개공 TiO 2분체적평균공경증대、비표면적화비공용하강。
Mesoporous materials have been widely used in different fields due totheirspecial pore structures.In this work,mesoporous TiO 2 powders were synthesized by sol-gel method to investigate effects of drying tem-perature,calcination temperature and holding time on the microstructure of mesoporous TiO 2 powders.N2 ad-sorption-desorption method was used to characterize the specific surface area,specific pore volume and pore size distribution of TiO 2 powders,and X-ray diffraction was employed to analyzethe phase composition and crystallite size of TiO 2 powders.It is indicated that there exists an optimumdrying temperature for synthesis of mesoporous TiO 2 powders.Both increase of calcination temperature and prolongation of holding time result in an increase in the average pore size and a decrease in both the specific surface area and specificpore volume of mesoporous TiO 2 powders.