中文摘要
用微乳液-水热法分别制备了球形、立方状、空心立方状、膜状、棒状、管状以及刺球状的含有不同种类碱金属的纳米Co-Fe普鲁士蓝类配合物，研究了温度、反应时间、水与表面活性剂的摩尔比、反应物浓度以及表面活性剂种类等实验条件对颗粒形状和大小的影响，发现表面活性剂种类和微乳液的结构对产品形貌有着独特的影响；并且用红外和紫外-可见光谱法研究了碱金属种类和含量、钴铁比以及颗粒的形貌对纳米Co-Fe普鲁士蓝类配合物中FeⅢ―CN―CoⅡ、FeⅡ―CN―CoⅢ和FeⅡ―CN―CoⅡ三种Fe-CN-Co键比例的影响，用超导量子干涉仪研究了碱金属种类和含量、钴铁比以及颗粒的形貌对纳米Co-Fe普鲁士蓝类配合物矫顽力、居里温度等磁性的影响，发现碱金属的种类和含量、钴铁比以及配合离子对颗粒中三种Fe-CN-Co键比例影响较大，从而影响产品的磁性以及光致磁性；还探讨了微乳液-水热法合成含碱金属的Co-Fe普鲁士蓝类配合物纳米材料的机理，以及各种因素对纳米Co-Fe普鲁士蓝类配合物形状、结构、磁性以及光致磁性的影响规律，开拓了制备不同形状、性能优良的纳米光致磁性材料的途径。
英文摘要
A series of photomagnetic Co-Fe Prussian blue analogues(PBA) which contain alkali cation were synthesized by microemulsion-mediated hydrothermal method. The effects of temperature, reaction time,the molar ratio of water to surfactant, reactant concentration and the surfactant species on the morphology of Co-Fe PBA had been studied. The results reveal that surfactant and the structure of microemulsion have distinct influence and a series of novel morphology of PBA nanoparticles,including sphere,cubic,hollow nanocubic,filmy,cylinder,nanotube and rough-sphere, are obtained. Furthermore,The influence of the nature and concentration of alkali cation, the ratio of Co to Fe,the morphology of nanoparticles on the Fe-CN-Co bond type of Co-Fe PBA were examined by IR,UV-vis optical absorption and magnetism were conducted by SQUID Magnetometer. It is found that the type of Fe-CN-Co bond，magnetism and photoinduced ferrimagntism of products are remarkably dominated by the nature and concentration of alkali cation,the ratio of Co to Fe and the complexing ion. In addition, the prepare mechanism of nanoparticles by microemulsion-mediated hydrothermal method and the dependence of photoinduced ferrimagntism on various factors were also investigated.
结题摘要
用微乳液-水热法分别制备了球形、立方状、空心立方状、膜状、棒状、管状以及刺球状的含有不同种类碱金属的纳米Co-Fe普鲁士蓝类配合物，研究了温度、反应时间、水与表面活性剂的摩尔比、反应物浓度以及表面活性剂种类等实验条件对颗粒形状和大小的影响，发现表面活性剂种类和微乳液的结构对产品形貌有着独特的影响；并且用红外和紫外-可见光谱法研究了碱金属种类和含量、钴铁比以及颗粒的形貌对纳米Co-Fe普鲁士蓝类配合物中FeⅢ―CN―CoⅡ、FeⅡ―CN―CoⅢ和FeⅡ―CN―CoⅡ三种Fe-CN-Co键比例的影响，用超导量子干涉仪研究了碱金属种类和含量、钴铁比以及颗粒的形貌对纳米Co-Fe普鲁士蓝类配合物矫顽力、居里温度等磁性的影响，发现碱金属的种类和含量、钴铁比以及配合离子对颗粒中三种Fe-CN-Co键比例影响较大，从而影响产品的磁性以及光致磁性；还探讨了微乳液-水热法合成含碱金属的Co-Fe普鲁士蓝类配合物纳米材料的机理，以及各种因素对纳米Co-Fe普鲁士蓝类配合物形状、结构、磁性以及光致磁性的影响规律，开拓了制备不同形状、性能优良的纳米光致磁性材料的途径。