摘要
制备了酞菁铜 (CuPc) -Fe3O4 纳米复合粒子 ,分析了CuPc与Fe3O4 纳米粒子的复合过程 ,提出了其复合机理 .研究并建立了CuPc -Fe3O4 纳米复合粒子的结构模型 .研究了复合粒子的抗氧化性和热稳定性 .结果表明 ,CuPc与Fe3O4 纳米粒子之间形成了化学键 .在复合过程中 ,首先一部分CuPc与Fe3O4 纳米粒子表面的氧离子形成化学键 ;然后Fe3O4 纳米粒子发生聚集 ,形成聚集体 ;最后相当一部分CuPc与聚集体表面的Fe3O4 纳米粒子复合 ,从而形成CuPc-Fe3O4 纳米复合粒子 .在复合粒子内部 ,Fe3O4 纳米粒子呈无规则的非紧密堆积状态 ;在复合粒子表面 ,CuPc以分子分散层的形式与Fe3O4 纳米粒子复合 ,其分子分散层最大量为 0 .0 4g/g(Fe3O4 ) .Fe3O4 纳米子以CuPc复合以后 ,其抗氧化能力和热稳定性显著提高 .
Phthalocyanine copper(CuPc)-Fe 3O 4 nanoparticles composites were prepared. The complex process of CuPc with Fe 3O 4 nanoparticles had been analyzed, and the complex mechanism and the structure model for CuPc-Fe 3O 4 nanoparticles composite were studied. The antioxidation ability and thermal stability of the composite were investigated. The resutls show that there are chemical bindings between CuPc-Fe 3O 4 nanopar_ticles, which make the complex effective. The complex mechanism of CuPc with Fe 3O 4 nanoparticles may be described as follows:first, there are composite between CuPc and all the Fe 3O 4 nanoparticles. Then Fe 3O 4 nanoparticles accumulate together to form the accumulators, CuPc has a function of cohering Fe 3O 4 nanoparticles. A considerable number of CuPc combine with Fe 3O 4 nanoparticles on the surface of the accumulators to form CuPc-Fe 3O 4 nanoparticles composite. All the processes above take place spontaneously. Inside the CuPc-Fe 3O 4 nanoparticles composite, Fe 3O 4 nanoparticles accumulate together without order, on the surface of the composite, CuPc forms molecular dispersion layer. The threshold of molecular dispersion layer is 0.04 g/g(Fe 3O 4). The antioxidation ability and thermal stability of Fe 3O 4 nanoparticles have been improved greatly after the formation of the composite.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2000年第5期432-436,共5页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金!资助项目 (2 9674 0 2 1 )
关键词
酞菁铜
氧化钛
纳米复合粒子
纳米材料
性能
phthalocyanine copper-ferrosic oxide nanoparticles composite
structure model
antioxidation ability
thermal stability
