化工新型材料

化工新型材料 ›› 2018, Vol. 46 ›› Issue (10) : 156-160.

科学研究

Fe₂O₃@CuO纳米核壳结构颗粒的制备及其形成过程研究

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Synthesis of Fe₂O₃@CuO core-shell nanoparticle and its formation mechanism

Han Xinyou¹,Fang Kegong²,Lin Minggui²,Sun Yuhan³

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摘要

以Fe(NO₃)₃、Cu(NO₃)₂和尿素为原料,利用一步均匀沉淀法合成了CuO包覆Fe₂O₃的纺锤形纳米核壳结构颗粒Fe₂O₃@CuO。采用透射电镜、能谱和X射线衍射等手段研究了不同合成阶段及制备条件下纺锤形结构颗粒的形貌、元素及物相组成。结果表明:合成溶液中Fe³⁺、Cu²⁺先后沉淀生成α-Fe₂O₃和Cu₂(OH)₃NO₃纳米带,后者与氨络合而后转化为更稳定的Cu(OH)₂纳米片,Cu(OH)₂纳米片再以α-Fe₂O₃为凝结核聚合形成纺锤形纳米核壳结构颗粒。

Abstract

The spindle-shaped core-shell Fe₂O₃@CuO nanoparticles were prepared by one step homogeneous precipitation method using Fe (NO₃)₃,Cu(NO₃)₂ and urea as precursor materials.The morphology,elemental composition and phase composition of samples in different synthesis stages and conditions were characterized by transmission electron microscope (TEM),energy dispersive spectroscopy (EDS) and powder X-ray diffraction (XRD).The results indicated that Fe³⁺ and Cu²⁺ were firstly precipitated respectively,then Cu deposition were dissolved and transformed into Cu (OH)₂ nano sheets,which finally aggregated onto the core α-Fe₂O₃ particles and formed the spindle-shaped core-shell nanoparticles.

关键词

Fe₂O₃@CuO / 均匀沉淀 / 纺锤形包覆结构 / 铜氨络合物

Key words

Fe₂O₃@CuO / homogeneous precipitation / spindle-shaped coating structure / copper ammonia complex

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Fe₂O₃@CuO纳米核壳结构颗粒的制备及其形成过程研究[J]. 化工新型材料, 2018, 46(10): 156-160 DOI:

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