骨科钛板表面TiO2纳米管阵列的制备和结构表征

目的 在骨科钛板表面制备TiO2纳米管阵列,并对其表征,为骨科内植物表面修饰或涂层提供载体,也为防治骨科内植物感染寻求一新途径.方法 利用阳极氧化法,以甘油体系为电解液,骨科临床钛板为阳极,铂电极为阴极,通过调整一定的参数,在骨科钛板表面制备TiO2纳米管阵列,并对其表征.利用X射线光电子能谱仪(XPS)分析纳米管元素组成,并通过X射线衍射仪(XRD)观察其在300 ℃高温下形态是否变化.结果 以甘油体系为电解液,使用阳极氧化法24 h可在骨科临床钛板表面制备出管径为100～200 nm、管长在3μm以内的TiO2纳米管阵列.宏观直视下可见骨科钛板表面由银白色变为深蓝色.XPS分析骨科钛板表面的TiO2纳米管阵列主要由Ti元素(75.88％)、O元素(20.16％)和F元素(3.96％)组成.此外,经马弗炉加温至300℃的TiO2纳米管阵列形态稳定.结论 利用阳极氧化法可制备出表面均匀的TiO2纳米管阵列.该阵列形态稳定,内部中空状,底部封闭,具有较大的比表面积,且可耐受高温,可为骨科内植物表面修饰或涂层提供载体.

Preparation and structural characterization of TiO2 nanotube arrays on surface of orthopaedic titanium plate

Objective The TiO2 nanotube arrays,fabricated on the surface of orthopedics,was characterized,to provide carrier for orthopedics plant surface modification or coating,and seek a new way for the prevention and treatment of orthopedics plant infection.Methods By adjusting certain parameters,TiO2 nanotube arrays were fabricated on orthopedic titanium plate surface using the method of anodic oxidation,with glycerol system as electrolyte,orthopedics titanium plate as anode,and platinum electrode as cathode.TiO2 nanotube arrays were characterized.The element composition of TiO2 nanotube arrays was analyzed by X-ray photoelectron spectroscopy (XPS),and the morphological changes of TiO2 nanotube arrays was observed at high temperature (300 ℃) by X-ray diffractomer (XRD).Results With glycerol system as electrolyte,TiO2 nanotube array with diameter of about 100 to 200 nm and the length less than 3μm can be fabricated on orthopedic titanium plate surface using anodic oxidation of 24 h.The surface of orthopedic titanium plate was changed from silver white to deep blue in the macroscopic view.The TiO2 nanotube array on orthopedics titanium plate surface was mainly composed of Ti element (75.88％),O element (20.16％),and F element (3.96％) by XPS analysis.TiO2 nanotube arrays morphology was stable when it was heated to 300 ℃ by muffle furnace.Conclusions The method of anodic oxidation can be applied to manufacture TiO2 nanotubes array on titanium plate surface.The array with stable morphology,the inner hollow shape,the bottom sealing,and a large specific surface area,can withstand high temperature,which can provide carrier for orthopedics plant surface modification or coating.