【作者】 王建； 康东娟； 陈元涛； 于晓琳； 葛茂发；

【Author】 WANG Jian;KANG Dong-juan;CHEN Yuan-tao;YU Xiao-lin;GE Mao-fa;Department of Chemistry,Qinghai Normal University;State Key Laboratory for Structural Chemistry of Unstable and Stable Species,Institute of Chemistry,Chinese Academy of Sciences;

【机构】 青海师范大学化学系； 中国科学院化学研究所分子动态与稳态结构国家重点实验室；

【摘要】 水滑石（LDHs）及其焙烧后得到的复合金属氧化物是一类在催化、吸附等领域有着潜在应用的材料。本文以NaOH/Na₂CO₃为沉淀剂,采用共沉淀法合成了Mg/Fe-LDHs,并采用焙烧得到衍生复合氧化物。通过红外光谱（FTIR）和X射线衍射（XRD）对所制备的材料进行表征。该材料被用于饮用水中氟离子的脱除。吸附试验表明所制备的吸附剂对水中的氟离子具有较好的吸附效果,其饱和吸附容量可达42.6 mg·g^-1。更多还原

【Abstract】 The layered double hydroxides（LDHs） and their derivatives,mixed oxides by calcining LDHs,are one of important potential materials in the catalysis and adsorption fields.In the thesis,Mg/Fe-LDHs was prepared by coprecipitation method,from the corresponding nitrate solutions and mixed precipitants（NaOH and Na₂CO₃）.The mixed oxides were obtained by calcining the Mg/Fe-LDHs.The adsorbent was characterized by FTIR and XRD,and was used to remove fluoride from the aqueous solution.It was found that the calcination product of Mg/Fe-LDHs can be an efficient adsorbent for fluoride removal from aqueoussolution.In addition,Langmuir model can fit the experimental data better.The maximum adsorption capacity for fluoride can reach 42.6 mg · g^-1.更多还原