摘要
采用接枝羧基淀粉(ISC)吸附金属离子前驱物(ISC-Ni)热解法,制备了粒度分布均匀、分散性好的NiO纳米颗粒。该方法分为3步:(1)ISC的合成;(2)ISC-Ni的制备;(3)ISC-Ni分解及NiO纳米颗粒的相转化。对ISC和ISC-Ni的红外光谱进行了对比和讨论,初步讨论了ISC对金属离子的吸附机理;利用差热、热重分析了前驱物的分解过程;通过X射线衍射数据分析了NiO纳米颗粒的晶相;借助透射电镜(TEM)观察了NiO纳米颗粒的形状和尺寸分布。
A novel method was used to prepare well - separated and spherical nickel oxide NiO nanosized particles. The overall process involved three steps: preparation of insoluble Carboxyl - containing grafted starch Copolymer ( ISC), formation of presursor (ISC-Ni), decomposition of ISC-Ni, and phase transition of NiQ nano - particles. Infrared spectra for ISC and ISC - Ni were discussed. The decomposition of the precursor was studied by DTA - TG. The Crystalline phase was characterized by XRD. The size distribution and shape of particles were characterized by TEM.
出处
《石化技术与应用》
CAS
2005年第3期220-222,i002,共4页
Petrochemical Technology & Application
关键词
纳米粒子
氧化镍
制备
nanoparticles
NiO
preparation
