摘要
以三甘醇(TEG)为溶剂,高温热分解乙酰丙酮锌合成了氧化锌纳米粒子。为改善氧化锌纳米粒子表面性能和生物应用性能,分别用硅烷偶联剂(KH550)和聚酰胺-胺(PAMAM)进行表面修饰,在氧化锌纳米粒子表面接枝了-NH2活性官能团。分别采用X射线衍射仪(XRD)、透射电镜(TEM)、红外光谱(FT-IR)、X射线光电子能谱、动态光散射(DSL)和紫外可见分光光度计(UV-Vis)对样品进行了表征测试。XRD结果表明纳米氧化锌的平均晶粒尺寸为10 nm,并具有较好的结晶性。TEM观察表明,其形貌为颗粒状和小晶粒团聚成的球状粒子。FT-IR、XPS、DSL和Zeta电位测试结果表明氨基官能团成功修饰在氧化锌纳米粒子表面,增强了粒子的表面功能。UV-Vis光谱表明,氨基活性基团修饰后的纳米氧化锌仍然具有较强紫外带隙吸收。
ZnO nanoparticles were synthesized by thermal decomposition of the zinc acetylacetone in triethylene glycol. Aimed to improve the surface active groups and potential bio-application of the zinc oxide nanoparticles, （3-Aminopropyl）triethoxysilane and poly （amidoamine） were used to graft active amino group on the surface. The samples were measured and characterized by X-ray diffraction, transmission electron microscopy, fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, dynamic light scattering, and ultraviolet-visible absorption spectrum. XRD results show that the average grain size of the nanoparticles is about 10 nm, and the nanoparticles possess good crystallinity. TEM morphology observation shows aggregated by small crystal grains. FT-IR, XPS, that the spherical nanoparticles and sub-microspheres DSL and zeta potential test results show that the amino groups were successfully graft on the surface of zinc oxide nanoparticles, which enhance the particles surface functionality. The ultraviolet-visible absorption spectrum shows that the nano-ZnO particles,modified with active amino group, still have strong ultraviolet band gap absorption.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2014年第5期1229-1235,共7页
Journal of Synthetic Crystals
基金
广西自然科学基金(2013GXNSFBA019013)
广西教育厅科研项目(200911MS98)
广西有色金属及特色材料加工重点实验室开放基金(12KF-6)
关键词
氧化锌
纳米粒子
溶剂热分解
表面修饰
：zinc oxide
nanoparticle
solvent thermal decomposition
surface functionality
