CAJ | 학술논문

以硝酸铋、四氯化钛和硝酸镧为原料,以氢氧化钾为矿化剂,采用水热法合成了不同镧掺杂量的钛酸铋粉体.用X射线衍射(XRD)和透射电镜(TEM)对所得粉体进行了表征,借助紫外-可见分光光度计考察了样品降解甲基橙的光催化性能.实验结果显示:在水热合成温度为220～280 ℃、保温时间为6 h的条件下,可得到各向异性、短轴为30 nm、长轴大于100 nm的掺镧钛酸铋粉体,且该方法所制备的掺镧钛酸铋(Bi 4-xLaxTi3O12)粉体具有一定的光催化效果.
이초산필、사록화태화초산란위원료,이경양화갑위광화제,채용수열법합성료불동란참잡량적태산필분체.용X사선연사(XRD)화투사전경(TEM)대소득분체진행료표정,차조자외-가견분광광도계고찰료양품강해갑기등적광최화성능.실험결과현시:재수열합성온도위220～280 ℃、보온시간위6 h적조건하,가득도각향이성、단축위30 nm、장축대우100 nm적참란태산필분체,차해방법소제비적참란태산필(Bi 4-xLaxTi3O12)분체구유일정적광최화효과.
Bismuth titanate powders doped with different amounts of lanthanum were synthesized by hydrothermal method using bismuth nitrate [Bi(NO3)3·5H2O],titanium tetrachloride (TiCl4),and lanthanum nitrate [La(NO3)2·6H2O] as raw materials,and potassium hydroxide (KOH) acted as mineralizer.XRD and TEM were used to characterize prepared powders.Photocatalytic activity of the samples degrading methyl orange were investigated via UV-Vis.Results showed that anisotropic lanthanum - doped bismuth titanate (Bi 4-xLaxTi3O12) nano - powders possessing short axis of 30 nm and long axis of more than 100 nm were obtained,under the condition of hydrothermal synthesis temperature of 220～280 ℃ and soaking time of 6 h.And Bi 4-xLaxTi3O12 powders had photocatalytic activity.