摘要
采用常温法合成了钒取代的杂多酸H4PVW11O40,采用溶胶-凝胶法制备了二氧化钛负载的钒取代杂多酸光催化剂H4PVW11O40/TiO2。红外光谱及X射线衍射粉末手段显示合成的杂多酸及催化剂具有Keggin结构。紫外漫反射的表征结果显示催化剂扩大了光吸收的范围,提高了光催化效率。实验结果表明,该复载催化剂在可见光下有较好的光催化活性,H4PVW11O40/TiO2在120 min内对罗丹明B的光催化降解转化率达到95.36%。
Vanadium-substituted heteropolyacids was prepared in the routine synthesis. The vanadium substituted heteropolyacids loading titania was prepared by sol-gel method. IR spectroscopy and Powder X-ray diffraction results showed that the synthesis of heteropoly acid catalyst was Keggin-type. The diffuse reflectance UV results showed that the photocatalytic efficiency was improved. The results showed that the catalyst had higher catalytic activity, and the photo-catalytic activity of H4PVW11O40/TiO2 in the degradation of RB was 95.36%in 120 min.
出处
《齐齐哈尔大学学报(自然科学版)》
2014年第1期59-61,共3页
Journal of Qiqihar University(Natural Science Edition)
基金
黑龙江省自然科学基金项目(B201106)
齐齐哈尔大学青年教师科研启动支持计划科学技术类项目(2011k-M17)
黑龙江省教育厅科学技术研究项目(12511592)
关键词
杂多酸
二氧化钛
光催化
罗丹明B
heteropoly acid
titanium dioxide
photocatalysis
rhodamine B