氧化镍复合材料及其表征.pdf

第30卷第3期
无机化学学报
Vol30 No.3
2014年3月
CHINESE JOURNAL OF INORGANIC CHEMISTRY
609-614
微波辅助合成石墨烯/氰化镍复合材料及其表征
黄子东张海燕*陈易明王文广洪田惺叶翼鹏雷兴领
(广东エ业大学材料与能源学院,广州51000
摘要;本文通过微波辅助的方法,快速而有效地在热膨胀石墨烯RC)的缺陷上原位合成氧化镍纳米颗粒,形成石墨烯/匊化镍复
合材料( RG/Nio)。利用X-射线衍射(XRD,拉曼光谱( Raman),傅里叶变换红外FTR)扫描电镜ぐSEMり,透射电镜(TEMり,热重一差热
TGA-DSの对所制备样品的结构、形貌和NiO在复合材料中的含量进行表征。结果表明,热膨胀石墨烯层数约7~8层,层间距约
为0.35mm,缺陷多,在水热和微波处理后抗氧化性明显变差。复合材料中氧化镍颗粒平均粒径为25nm,均匀而密集地分散在
石墨烯平面上,同时在复合材料中的含量为19.8%。
关键词:热膨胀石墨烯;氧化镍;石墨烯/化镍复合材料
中图分类号:0613.71:TB33
文献标识码:A文章编号:1001-4861(2014)03-0609-06
DOI:10.,11862/CJIC.2014.114
Microwave-assisted Synthesis and Characterization of
Graphene/Nio Composites Materia
HUANG Zi-dong ZHANG HAI-YAN"CHEN Yi-ming
WANG Wen-guang HONG Tian-xing YE Yi-peng LEI Xing-ling
School of Materials and energy, Guangdong University of Technology, Guangzhou 510006, China)
Abstract: Graphene/nickel oxide composites (RG/Nio )were prepared by microwave-assisted in-situ synthesis of
nano-particles Nio on the defects of thermal expansion graphene (RG). The structure, morphology and the Nio
content of the composites were characterized by X-ray diffraction (RD), Raman spectra (Raman), Fourier
transform infrared (FTIR), scanning electron microscopy (SEM) transmission electron microscopy (TEM)and
thermogravimetry-differential thermal analysis (TGA-DS). The results show that the number of high-defects
graphene layers is about 7-8 and the interlay spacing is around 0.35 nm. After hydrothermal reaction and
microwave irradiation, the oxidation resistance of graphene became poor obviously. The nanoparticles Nio with an
average diameter of 25 nm evenly and densely coated on the graphene sheet. Simultaneously the weight
percentage of Nio in the RG/Nio composites is estimated to be 198wt%
Key words: thermal expansion graphene; nanoparticles Nio; graphene/nickel oxide composites material
石墨烯自2004年起作为碳材料领域上的新殊结构造就了石瞾烯具有高比表面积、出色的导电
秀叫,以其独特的电学、光学间、热学倒性能成为科学性、导热性和高机械强度等优异性能。然而二维
和技术界的研究新宠。石墨烯是一种单原子层石墨形貌的石墨烯为降低表面张力而出现褶皱、重叠,
薄片,碳原子以六环密集排列形成二维平面,该特这种热力学上的不稳定导致石墨烯性能的变化,从
收稿日期:2013-08-14。收修改稿日期:2013-12-05。
国家自然科学基金(No.51276044;“+ニ五”国家科技支撑计灲项目(No.2012BAK26B04);广东省科技计划项目(。.2011BO50300017,
N.2012B07080005);广东省高等学校科技创新重点项目(粤财教(201)473号);广东省自然科学基金(N。S2012040055)资助项目。
“通讯联系人。E-mail:hyzhang@gdut.edu.cn