Zn/Al-LDH和Zn/Mo-LDH及其改性产物的制备和吸附性能  

Preparation and Adsorption Properties of Zn/Al-and Zn/Mo-Layered Double Hydroxide( LDH) and Their Modified Composites

作　　者：田宏燕[1] 牛奎[1] 王月辉[1] 梁力曼[1] 王少飞[1] 方明[1] 

机构地区：[1]河北科技师范学院化学工程学院,河北秦皇岛066600

出　　处：《河北科技师范学院学报》2014年第2期46-50,80,共6页Journal of Hebei Normal University of Science & Technology

基　　金：河北省高等学校科学技术研究项目(项目编号:Z2011158);河北省秦皇岛市科学技术研究与发展计划项目(项目编号:201101A035;2012021A129;201302A039)

摘　　要：采用共沉淀法以硝酸锌、硝酸铝、氯化钼和尿素为原料,制备出锌铝水滑石(Zn/Al-LDH)和锌钼水滑石(Zn/Mo-LDH),经煅烧得到衍生复合氧化物(LDO),采用再构筑法用己二酸、辛二酸、癸二酸对其进行改性。借助X-射线衍射仪(XRD)、红外吸收光谱仪(FTIR)、透射电子显微镜(TEM)和热重分析(TG)等手段对制得的样品进行了表征,并对LDH,LDO及改性LDH的吸附性能进行了研究。结果表明,Zn/Mo-LDH比Zn/AlLDH具有更短的最佳吸附时间,且能达到较大的脱色率,但Zn/Al-LDO具有最大的脱色率。Zinc-aluminium and zinc-molybdenum layered double hydroxide（ LDH） were prepared with Zn（ NO3）2·6H2O,Al（ NO3）3·9H2O,MoCl5,and Urea by coprecipitation method and mixed metal oxide（ LDO） were obtained by calcining the LDH.LDH was modified with adipic acid,suberic acid and sebacic acid by reconstruction method.XRD,TG,FTIR,TEM were performed to characterize the LDH,LDO and modified LDH.Absorption performance of LDH,LDO and modified LDH were studied.The results showed that Zn/Mo-LDHs presented a shorter best-absorption time than Zn/Al-LDHs.Furthermore,they also presented superior decolorization rate,while Zn/Al-LDO presented the highest decolorization rate.

关 键 词：水滑石(LDH) 改性 吸附 

分 类 号：X703[环境科学与工程—环境工程]