用溶胶-凝胶法制备V-N-TiO2/玻璃珠光催化复合材料,研究V-N-TiO2(V-N-TiO2)的浓度、V-N-TiO2/玻璃珠的浸渍次数、玻璃珠尺寸、煅烧温度和煅烧时间对V-N-TiO2/玻璃珠光催化复合材料光催化性能的影响.采用XRD、EDS、TEM、XPS等测试手段对复合材料的结构和性能进行表征;在100 W汞灯下,以苯酚溶液为目标降解物,对V-N-TiO2/玻璃珠光催化复合材料光催化性能进行测定.研究表明:当V-N-TiO2/玻璃珠的浸渍次数为4次、玻璃珠尺寸为2~3 mm、煅烧温度为400℃和煅烧时间为4.5 h时,得到的V-N-TiO2/玻璃珠光催化复合材料对苯酚的光催化性能最佳,且单位催化剂对苯酚的降解量略高于V-N-TiO2.V-N-TiO2/玻璃珠光催化复合材料既易于回收,又具有良好的光催化性能.
V-N co-doped TiO2/glass beads photocatalytic composites were synthesized by sol-gel method.The effects of several preparation condition,such as V-N co-doped TiO2(V-N-TiO2) concentration,V-N-TiO2/glass beads dipping times,glass beads size and calcination temperature were studied.The V-N-TiO2/glass beads photocatalytic composites were characterized by TEM,EDS,XRD,XPS and their photocatalytic properties for phenol degradation were investigated.The result shows that the V-N-TiO2/glass beads composite with 2%V-N-TiO2 and 2~3 mm glass beads,dipping for 4 times,calcinating at 400℃ for 4.5 h,exhibits the best photocatalytic performance.Moreover,the degradation amount of phenol per the V-N-TiO2/glass beads composite is slightly higher than V-N-TiO2.The prepared V-N-TiO2/glass beads composite reveals good photocatalytic performance and stability of recycle.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%