纳米复合材料K_8[γ-SiW_(10)O_(36)]·12H_2O/ZrO_2微波增强光催化降解二甲酚橙  

Microwave Enhanced Photocatalytic Degradation of Xylenol Orange with K_8[γ-SiW_(10)O_(36)]·12H_2O/ZrO_2 Nanocomposite

作　　者：李莉[1,2] 曹艳珍[1] 陆丹[1] 郭伊荇[2] 

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 [2]东北师范大学化学学院,长春130024

出　　处：《化学通报》2009年第9期828-832,共5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);齐齐哈尔大学研究生创新项目(YJSCX2009-01X)资助

摘　　要：通过溶胶-凝胶再程序升温熔剂热一步法制备了K8[γ-SiW10O36]·12H2O/ZrO2纳米复合光催化材料,采用FT-IR、XRD、ICP-AES和氮气吸附-脱附测定等测试手段对其组成、结构、形貌等进行了表征。结果表明,复合材料中杂多酸的基本结构未发生明显变化,并且该复合材料比表面积增大(120.061m2/g)的同时还具有孔结构,平均孔径约为3.7nm。在微波无极灯照射下,以微波增强光催化降解二甲酚橙为模型反应,研究了该纳米复合材料微波增强光催化性能,结果表明,在微波作用下,复合光催化材料K8[γ-SiW10O36]·12H2O/ZrO2的光催化活性显著增强。The composite K8[γ-SiW 10 O36 ]·12H2O/ZrO2 was prepared via one-step sol-gel method followed by hydrothermal treatment at 110℃ with a heating ramp of 2℃/min. The phase structures,chemical composition,optical absorption properties and surface physicochemical properties were well-characterized via XRD,FT-IR,ICP-AES and nitrogen adsorption/desorption determination. The results indicated that the heteropoly acid structure remained intact after formation of the composite. Meanwhile,nanocomposite K8 [ γ-SiW10 O36 ] · 12H2 O/ZrO2 has large surface area （ 120.061 m^2/g）, and its pore size distribution was ca. 3.7 nm. The photocatalytic activities of as-prepared composite were studied by microwave enhanced photodegradation xylenol orange. The results indicates that the photocatalytic activity of K8 [γ-SiW10 O36 ]· 12H2O/ZrO2 was higher.

关 键 词：微波 光催化 杂多酸 氧化锆 二甲酚橙 

分 类 号：TB332[一般工业技术—材料科学与工程]