【摘要】 采用一种新方法———接枝羧基淀粉(ISC)吸附金属离子前驱物(ISC Co)热解法, 制备了粒度分布均匀、分散性好的Co3O4 纳米颗粒. 该法分为3步: ISC的合成; ISC Co的制备; ISC Co分解及 Co3O4 纳米颗粒的晶相转化.对 ISC 和 ISC Co的红外光谱(IR)进行了对比和讨论, 利用差热 热重(DTA TG)分析法研究了前驱物的分解过程; 通过X射线衍射(XRD)数据分析了Co3O4 纳米颗粒的晶相, 借助透射电镜(TEM)观察了纳米粒子的形状和尺寸分布.更多还原

【Abstract】 A new method is used to prepare wellseparated and spherical tricobalt tetraoxide（Co₃O₄）nanosized particles.The overall process involves three steps: preparation of insoluble carboxylcontaining grafted starch copolymer（ISC）,formation of presursor（ISCCo）,decomposition of ISCCoand phase transition of Co₃O₄ nano particles.Infrared spectra for ISC and ISCCo are discussed.The decomposition of the precursor is studied by DTATG.The crystalline phase is characterized by XRD. The size distribution and shape of particles are observed by TEM.更多还原