透辉石矿物合成及其光催化性实验

固相烧结合成透辉石矿物,用X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）和紫外可见漫反射光谱（UV-vis）对不同温度下的合成产物进行表征,并将合成透辉石矿物用于紫外光照射条件下进行亚甲基蓝降解的实验研究,探讨其光催化性能.结果表明：1 400℃保温3 h的条件下合成纯透辉石;合成纯透辉石矿物具有光催化性,效率较低,催化剂样品质量浓度为2 g/L,亚甲基蓝初始质量浓度为0.8 mg/L,室温下光催化反应4 h,其降解率为16%.

Study on diopside synthesis and its photocatalysis

The purpose of this experiment is synthesis of Diopside in the laboratory,synthesis of products at different temperatures were characterized by XRD,FTIR,UV-vis absorption spectra and SEM measurements.Moreover,the photocatalytic activity of the synthesized diopside is studied through the photocatalytic reduction of methylene blue as a model compound under UV-vis light.The results showed that the diopside was prepared by this method at 1 400 ℃ for 3 hrs which has low catalytic efficiency.The photocatalytic reduction efficiency of methylene blue reached the level of 16% after being photo catalyzed for 4 hrs under the conditions of 2 g/L of mass concentration of catalyst samples and 0.8 mg/L of the initial concentration of methylene blue.