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- 2017
V-N共掺杂TiO2/玻璃珠光催化复合材料的制备及光催化性能
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Abstract:
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. 甘肃省科技重大专项（1602FKDA004）；甘肃省青年科技基金（145RJYA309）；甘肃省科学院与中科院合作项目（2016HZ-01）；甘肃省青年科技基金（145RJYA302）
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