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以高分子聚合物聚乙烯醇(PVA)为软模板,通过PVA与乙酸锌(Zn(CH3COO)2·2H2O)之间发生的离子络合反应,在PVA亚浓溶液所提供的空间位阻力作用下,经过烧结,获得了直径在15~50nm之间的呈放射状簇形排列的ZnO纳米柱.X射线衍射(XRD)表明,所得产物结晶良好,呈六方纤锌矿晶体结构.利用扫描电镜(SEM)和透射电镜(TEM)分析了不同热处理温度对产物形貌的影响,结果显示,随温度从400℃增加到700℃,ZnO纳米柱生长趋势总体趋于明显,同时产物形貌的规整性也明显变好.采用室温下光致发光(PL)光谱对制得的ZnO纳米柱的光学性能研究表明,随着温度升高,ZnO发光性能在逐渐改善,除在384nm处出现了较常见的紫外发射外,PL光谱曲线在354nm处还出现了少见报道的较强的紫外发射峰,显示出良好的紫外发光性能.
Using the polyvinyl alcohol (PVA) as soft template, the space-site resistance provided by the solution of PVA in concentrated solution by the ionic complex reaction between PVA and zinc acetate (Zn (CH3COO) 2 · 2H2O) , And then sintered to obtain ZnO nano-rods with radial clusters of 15 ~ 50 nm in diameter.The X-ray diffraction (XRD) shows that the obtained product has a good crystal structure and a hexagonal wurtzite crystal structure. SEM and TEM. The results showed that the growth tendency of ZnO nanorods tended to be obvious with the increase of the temperature from 400 ℃ to 700 ℃, and the regularity of the product morphology Also significantly better.Using the PL spectra at room temperature on the optical properties of ZnO nanorods obtained showed that as the temperature increases, ZnO luminescent properties are gradually improved, except at 384nm at the more common UV emission, the PL spectral curve at 354nm also appeared rarely reported strong UV emission peak, showing good UV luminescence properties.