HAP自组装球的简易合成及其光催化增效作用  

Facile Synthesis of Assembly HAP Nanoribbon Spheres and the Synergized Action of Its Photocatalytic Properties

作　　者：杨小红[1] 刘畅[2] 刘金库[2] 朱子春[1] 

机构地区：[1]池州学院化学系,安徽池州247000 [2]华东理工大学化学系,上海200237

出　　处：《物理化学学报》2011年第12期2939-2945,共7页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(21071024);安徽省科技计划项目(10140702017);安徽省教育厅重点科研项目(KJ2010A244);污染控制与资源化研究国家重点实验室开放课题(PCRRF09005)资助~~

摘　　要：选择生物协同模板,通过简单的控制组装工艺,制备出结构均一有序的羟基磷灰石(HAP)纳米组装球.该纳米组装球整体尺寸约5-6μm,球体中心部分尺寸约为2.5-3μm.通过X射线粉末衍射(XRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)、傅里叶变换红外(FT-IR)光谱、比表面积(BET)测试等手段对产物形貌、结构和比表面积进行了表征.产物作为催化剂载体,对氧化锌催化降解罗丹明B(RhB)的催化效率提高了125%,催化剂回收率提高了23.1%,有效降低了催化剂的用量,在有机物降解领域具有潜在的应用价值.同时还对产物的控制生成过程和催化增效机理做了初步探讨.Hydroxyapatite （HAP） nanoribbon spheres with well-defined nanoscale structures and regular morphology were successfully synthesized using a bioactive cooperate template. The spheres are about 5-6 pm in diameter and they form from nanoribbons of 2.5 to 3 pm in length. The morphologies, structures, and surface areas of the products were studied by X-ray diffraction （XRD）, transmission electron microscopy （TEM）, scanning electron microscopy （SEM）, Fourier transform infrared （FT-IR） spectroscopy and Brunauer-Emmett-Teller （BET） analysis. In addition, the products were used as carried materials for the synthesis of the HAP/ZnO composite catalyst. The degradation rate of rhodamine B （RhB） increased by 125% and the recovery increased by 23.1% when using the composite as a catalyst compared with the ZnO nanoparticles. Possible mechanisms for the formation of the HAP assembly microspheres and their synergistic action are also discussed.

关 键 词：羟基磷灰石 氧化锌 纳米组装球 光催化 增效作用 

分 类 号：TB383.1[一般工业技术—材料科学与工程]