中文摘要：

以过渡金属盐Co（NO3）2、Mn（NC3）2为钴源、锰源,Al（NC3）3为铝源,NaOH和Na2CO3混合溶液为碱性介质,利用共沉淀法分别制备了n（Co）∶n（Mn）∶n（Al）=4∶0∶2、4∶1∶1、4∶2∶0的CO32-离子插层纳米层状双金属氢氧化物（LDHs）.利用X射线衍射（XRD）、X射线荧光光谱分析（XRF）、N2吸附脱附、透射电镜（TEM）技术对样品进行了表征.结果表明,样品呈层状片状,随着LDHs样品中Mn、Al原子比的增加,结晶度变差,形貌变得无序,平均孔径减小,比表面积和孔道容量变大.

英文摘要：

The nanoparticle Co-Mn-Al-CO3 layered double hydroxides （LDHs） were synthesized by coprecipitation method using manganese nitrate as manganese source, cobalt nitrate as cobalt source, alumina nitrate as alumina source, and sodium hydroxide and sodium carbonate alkaline mediurn. Three kinds of Co-Mn-Al LDHs with various Co ： Mn . Al molar ratios（4 ： 2 ： 0, 4 ： 1 ： 1, and 4 ： 0 ： 2） were prepared. X-ray diffraction （XRD）, X-ray fluorescence（XRF）, N2 adsorption-desorption and transmission electron microscopy（TEM） were used to characterize the synthesized samples. It＇s observed that with the increase of Mn/Al molar ratio, the degree of crystallinity, ordered morphologies and average pore diameter decreased, while the specific surface area and the pore volume of Co-Mn-Al- CO3 increased.