复合光催化材料H_3PW_(12)O_(40)/Ta_2O_5光催化降解染料的研究  

Photo-catalytic Degradation of Dye by H_3PW_(12)O_(40)/Ta_2O_5

作　　者：李莉[1] 张秀芬[1] 张文治[1] 杨琳琳[1] 

机构地区：[1]齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006

出　　处：《化学通报》2008年第9期714-717,共4页Chemistry

基　　金：黑龙江省自然科学基金项目(B200608);黑龙江省普通高等学校青年学术骨干支持计划项目(1152G052和1152G053)资助

摘　　要：采用溶胶-凝胶法制备了半导体型金属氧化物Ta2O5,并通过浸渍法与杂多酸H3PW12O40复合,获得了纳米复合光催化材料H3PW12O40/Ta2O5。通过ICP-AES、FT-IR、N2吸附、TG等手段对其组成、结构及其表面物理化学性质进行了表征,并在可见光下考察了该复合材料对可溶性染料罗丹明B和亚甲基蓝的光催化活性。实验结果表明,该复合材料在可见光下有较好的光催化活性,其中,H3PW12O40/Ta2O5在180min内对亚甲基蓝的光催化降解转化率达到78%。The solid material H3PW12O40/Ta2O5 was prepared by the sol-gel and wet impregnation method. ICP-AES, Infrared （IR） spectra,N2 adsorption and thermogravimetry （TG） analysis were used to characterize the composition, structure and surface physicochemical properties of the as-prepared solid photo-catalytic material,and the photo-catalytic properties of the as-synthesized composite were tested by the photo-catalytic degradation of Rhodamoine B （RB） and Methylene Blue （MB） under visible-light irradiation. The results showed that the composite exhibited higher photo-catalytic activities, and the photo-catalytic activity of H3PW12O40/Ta2O5 in the degradation of MB was higher than that of the degradatinn of RB.

关 键 词：溶胶-凝胶法 浸渍法 光催化 TA2O5 杂多酸 

分 类 号：X132[环境科学与工程—环境科学]