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材料研究学报  2017, Vol. 31 Issue (4): 285-290    DOI: 10.11901/1005.3093.2016.454
  研究论文 本期目录 | 过刊浏览 |
以三聚氰胺-甲醛微球为模板制备均一氧化钆空心球
张弛, 孙刚, 欧阳文宜, 覃卉婷, 李栋辉, 姚楚, 江学良()
武汉工程大学材料科学与工程学院 武汉 430074
Preparation of Uniform Hollow Spheres of Gd2O3 by Using Melamine-Formaldehyde Microspheres as Templates
Chi ZHANG, Gang SUN, Wenyi OUYANG, Huiting QIN, Donghui LI, Chu YAO, Xueliang JIANG()
School of Material Science and Engineering, Wuhan Institute of Technology,Wuhan 430074, China
引用本文:

张弛, 孙刚, 欧阳文宜, 覃卉婷, 李栋辉, 姚楚, 江学良. 以三聚氰胺-甲醛微球为模板制备均一氧化钆空心球[J]. 材料研究学报, 2017, 31(4): 285-290.
Chi ZHANG, Gang SUN, Wenyi OUYANG, Huiting QIN, Donghui LI, Chu YAO, Xueliang JIANG. Preparation of Uniform Hollow Spheres of Gd2O3 by Using Melamine-Formaldehyde Microspheres as Templates[J]. Chinese Journal of Materials Research, 2017, 31(4): 285-290.

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摘要: 

以三聚氰胺和甲醛在水溶液中缩聚交联生成的单分散三聚氰胺-甲醛(MF)微球为模板,以尿素为沉淀剂,用均相沉淀法制备出核壳结构前驱体MF/Gd(OH)CO3复合微球,煅烧除去模板后得到单分散氧化钆(Gd2O3)空心球。使用傅立叶红外光谱(FT-IR)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)、X射线衍射分析(XRD)、X射线能谱仪(XPS)、热重分析(TG)和差示扫描量热分析(DSC)等手段表征了Gd2O3空心球的形貌和结构组成。结果表明,将前驱体煅烧去除了MF模板,非晶态的Gd(OH)CO3发生热分解反应生成了纯立方晶相的Gd2O3空心球,其粒径约为2.4 μm,壳层的厚度为120 nm。

关键词 无机非金属材料三聚氰胺-甲醛微球模板空心球Gd2O3    
Abstract

Monodispersed microspheres of melamine-formaldehyde (MF) was fabricated by polycondensation crosslinking process with aqueous solution of melamine and formaldehyde as raw material. Then the core-shell structure precursor of composite microspheres MF/Gd(OH)CO3 was prepared by a urea-based homogeneous precipitation technique with MF microspheres as templates. Finally hollow microspheres of Gd2O3 were obtained by calcination of the MF/Gd(OH)CO3 to remove tempaltes. The morphology and structure of the hollow microspheres Gd2O3 were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffractomater (XRD), X-ray energy dispersive spectroscopy (XPS), thermal gravimetric analysis (TG) and differential scanning calorimetry (DSC). The results show that the MF templates can be effectively removed and the amorphous precursor of composite microspheres MF/Gd(OH)CO3 has converted to crystalline Gd2O3 during the annealing progress. The generated hollow spheres of Gd2O3 possess particle size of about 2.4 μm and shell thickness of 120 nm.

Key wordsinorganic non-metallic materials    melamine formaldehyde    template    hollow spheres    gadolinium oxide
收稿日期: 2016-08-01     
ZTFLH:  TB383  
基金资助:国家自然科学基金(51273154), 武汉工程大学大学生校长基金(CX2015085)和武汉工程大学研究生教育创新基金(CX2016003)
作者简介:

作者简介 张 弛,男,1993年生,本科生

图1  MF模板、MF/Gd(OH)CO3复合微球以及Gd2O3空心球样品的FT-IR光谱图
图2  MF模板、MF/Gd(OH)CO3复合微球以及Gd2O3空心球样品的TG曲线
图3  MF/Gd(OH)CO3复合微球的DSC曲线
图4  MF/Gd(OH)CO3复合微球和Gd2O3空心球样品的XRD图
图5  Gd2O3空心球的XPS全谱和Gd 4d谱
图6  MF模板、MF/Gd(OH)CO3复合微球以及Gd2O3空心球样品的SEM图
图7  MF/Gd(OH)CO3复合微球和Gd2O3空心球样品的TEM图
图8  Gd2O3空心球的制备流程图
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