CAJ | 학술논문

用醇盐水解法制备了TiO2光催化剂，以TG-DTA、XRD、BET和SEM等方法研究了TiO2光催化剂物理化学特性，考察了添加聚乙烯醇对催化剂粒度大小及其催化活性的影响.结果表明，添加聚乙烯醇能显著降低团聚度，加入φ=0.5%～1.0%聚乙烯醇制备的样品平均颗粒尺寸约50 nm，具有较高的光催化活性.
용순염수해법제비료TiO2광최화제，이TG-DTA、XRD、BET화SEM등방법연구료TiO2광최화제물이화학특성，고찰료첨가취을희순대최화제립도대소급기최화활성적영향.결과표명，첨가취을희순능현저강저단취도，가입φ=0.5%～1.0%취을희순제비적양품평균과립척촌약50 nm，구유교고적광최화활성.
Titanium dioxide photocatalysts were prepared by hydrolysis of tatinium alkoxide. Their physicochemical characters were studied by using TG-DTA, XRD, BET and SEM,and their photocatalytic reactivity was also detemined with the degradation of phenol as a probe reaction. The results indicated that the presence of surfactant PVA at the synthesis solution of TiO2 reduced significantly its agglomeration, and resulted in homogeneous nanometer TiO2 particles.In the case of addition of 0.5%～1% of PVA,the resultant TiO2 particles were about 30 nm insize and exhibitted the best photoreactivity.