镧、碳共掺杂tio2的制备及其可见光催化性能.pdf

第卷第期化工学报
57 7 Vol. 57 No. 7
年月
Z006 7 Jour nal of Che mical Industr y and Engi neeri ng Chi na Jul y Z006
妥
妥、妥妥妥妥、
妥研究论文妥镧碳共掺杂的制备及其可见光催化性能
、
妥妥妥妥
妥
、
妥! Ti O2
孙红旗程友萍金万勤徐南平
! ! !
南京工业大学膜科学与技术研究所江苏南京
Z10009
摘要为了更有效地利用太阳能以钛酸丁酯为前驱体硝酸镧和四丁基氢氧化铵为掺杂离子给体通过改进
的溶胶凝胶法成功制备了纯和不同掺杂浓度的镧碳掺杂和共掺杂光催化剂表征结果显示共
- Ti OZ Ti OZ .
掺杂催化剂为锐钛矿型具有较高的比表面积感光范围拓展到可见光区分别以甲基橙罗丹明和氯酚
. B 4-
为降解物氙灯太阳光和自然光为光源进行催化剂的光催化降解实验结果表明共掺杂催化剂活性高于
未掺杂和单掺杂催化剂降解结果显示当共掺杂催化剂含 3 + 摩尔比焙烧温度在时具有最
. 0. 5 La 500
高的光催化降解效率共掺杂具备较高的可见光催化活性原因可能是碳掺杂降低了禁带宽度而镧
. Ti OZ Ti OZ
掺杂同时维持了体系的电荷平衡
.
关键词光催化共掺杂可见光光降解
" Ti OZ
中图分类号文献标识码文章编号
T@ 01Z X 703 A 0438 -1157 Z006 07 -1570 -05
Pr ePar ati On Of l ant hanu m and car bOn cO-dOPed Ti O2 and
PhOt Ocat al ysi s under vi si bl e i rr adi ati On
SUN HOn90i #CHEN G YOu Pi n9 #JI N Wan0i n #XU NanPi n9
\e mbrane science and Tec hnolog$ Researc h Center Nanj ing Uniuersit $
of Tec hnolog$ Nanj ing Z10009 Jiangs u China
Abstr act "Ti OZ-based phot ocatal ysi s technol ogy Was devel oped and appli ed t o phot odegradati on of or gani c
conta mi nants by utiliZi ng sol ar ener gy eff ecti vel y. Pure and doped or co-doped Ti OZ catal ysts Wit h vari ous
a mounts of l ant hanu m and car bon Were obtai ned by a modifi ed sol-gel pr ocess i n Whi ch tetrabut yl titanate
Was used as precursor and l ant hanu m nitrate tetrabut yl a mmon