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首页> 外文期刊>Polymers for advanced technologies >Organic-inorganic nanocomposites of (2-hydroxypropyl) cellulose as a precursor of nanocrystalline zinc oxide layers
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Organic-inorganic nanocomposites of (2-hydroxypropyl) cellulose as a precursor of nanocrystalline zinc oxide layers

机译：（2-羟丙基）纤维素的有机无机纳米复合材料，作为纳米晶体氧化锌层的前体

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摘要

The sol-gel method of synthesis of the hybrid nanocomposite films of ZnO/(2-hydroxypropyl) cellulose (HPC) on silica glass is presented. The sol phases were prepared for different weight ratios of zinc acetate dihydrate to HPC in the presence of triethylamine (TEA). Raman spectrum of the mixture of ZnAc and HPC indicates coordinating interaction between zinc ion and HPC. The generation of ZnO nanoparticles in the HPC matrix proceeds in situ through the annealing of the gel phase at a temperature of 160℃. Identification of ZnO nanoparticles in the HPC matrix is done by using photoluminescence (PL), UV-Vis, and Raman spectroscopy. The films of ZnO/HPC nanocomposite are transparent in the visible light and show a higher energy value of absorption edge compared with ZnO in the bulk. Nanocrystalline films of ZnO were obtained by the calcination of ZnO/HPC nanocomposite at 500℃. ZnO films possess a good transparency for the visible light and high absorbance for UV light. Nanocrystallite sizes of ZnO particles were estimated from the X-ray lines broadening. The properties of ZnO layers were studied by the evaluation of PL, X-ray investigation and atom force microscope (AFM) scanning, and the optical absorption edge.
机译：提出了溶胶-凝胶法合成石英玻璃上的ZnO /（2-羟丙基）纤维素（HPC）杂化纳米复合薄膜的方法。在三乙胺（TEA）存在下，制备不同重量比的乙酸锌二水合物与HPC的溶胶相。 ZnAc和HPC混合物的拉曼光谱表明锌离子和HPC之间存在配位相互作用。 HPC基质中ZnO纳米颗粒的生成通过在160℃温度下凝胶相的退火原位进行。 HPC基质中ZnO纳米颗粒的鉴定是通过使用光致发光（PL），UV-Vis和拉曼光谱进行的。 ZnO / HPC纳米复合材料薄膜在可见光下是透明的，与本体中的ZnO相比，其吸收边的能量值更高。 ZnO / HPC纳米复合材料在500℃下煅烧得到ZnO纳米晶膜。 ZnO薄膜对可见光具有良好的透明度，对紫外线具有高吸收率。 ZnO颗粒的纳米微晶尺寸是根据X射线线展宽估算的。通过PL评估，X射线研究和原子力显微镜（AFM）扫描以及光吸收边缘研究了ZnO层的性能。

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