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以硅片为衬底,使用六水合硝酸锌(Zn(NO3)2·6H2O)、六水合硝酸铈(Ce(NO3)3·6H2O)以及六次甲基四胺(C6H12N4)为原料,采用水热法在90℃下生长出表面修饰CeO2纳米颗粒的ZnO亚微米杆,运用X射线衍射(XRD)、透射电镜(TEM)、扫描电子显微镜(SEM)及电子能谱仪(EDX)研究了样品的晶体结构、表面形貌和成分.实验结果表明,在不同的初始溶液浓度下长出的纳米结构有不同的形貌、结构和成分.通过对不同条件产物的形貌和结构的观察,发现在Ce(NO3)3·6H2O与Zn(NO3)2·6H2O的摩尔比例为1∶10时生长出的纳米颗粒浓密且均匀地附着在纳米杆的表面.这种纳米颗粒表面修饰的复合结构在CO的选择性探测方面有更好的应用价值.
Si (NO3) 2 · 6H2O hexahydrate, Ce (NO3) 3.6H2O hexahydrate, and hexamethylenetetramine (C6H12N4) were used as the substrate to make silicon wafer as substrate. The ZnO submicron rods with surface-modified CeO2 nanoparticles were grown by thermal method at 90 ℃. The samples were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and electron spectroscopy (EDX) The crystal structure, surface morphology and composition of the nanostructures were studied.The experimental results show that nanostructures with different initial solution concentrations have different morphologies, structures and compositions.On the basis of observing the morphology and structure of the products under different conditions, Nanoparticles grown at a molar ratio of 1: 10 Ce (NO3) 3 • 6H2O and Zn (NO3) 2 • 6H2O were densely and uniformly attached to the surface of the nanorods. The composite structure of the nanoparticle surface modification CO selective detection has a better application value.