Functional Nanomaterials Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences (CAS), Zhongguancun Beiyitiao 2, Haidianqu, Beijing 100190, China.
J Colloid Interface Sci. 2011 Mar 1;355(1):15-22. doi: 10.1016/j.jcis.2010.11.022. Epub 2010 Nov 23.
In this work, flower-like, boat-like, plate-like and ellipsoid-like copper oxide (CuO) nanostructures were fabricated by simple modulation of reaction conditions. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, nitrogen adsorption-desorption measurements and UV-visible diffuse reflectance spectra were employed to characterize the obtained CuO nanostructures. Reactants, hydrothermal temperature and time were found to largely affect the morphology and structure of CuO nanostructures. Flower-like and boat-like CuO nanostructures were successively fabricated by increasing hydrothermal time. Plate-like and ellipsoid-like CuO nanostructures were produced by modulating the use of polyethylene glycol (PEG) and NH(3)·H(2)O. The formation mechanisms were proposed based on the experimental results, which show that both PEG and NH(3)·H(2)O play an important role in the formation of the morphology and structure of CuO. The catalytic activity of the as-prepared CuO nanostructures was demonstrated by catalytic oxidation of methylene blue (MB) in presence of hydrogen peroxide (H(2)O(2)). The as-prepared CuO nanostructures all show good catalytic activity.
在这项工作中，通过简单地调节反应条件，制备出了花状、船状、板状和椭圆形的氧化铜（CuO）纳米结构。采用 X 射线衍射、扫描电子显微镜、透射电子显微镜、选区电子衍射、氮气吸附-脱附测量和紫外-可见漫反射光谱对所得到的 CuO 纳米结构进行了表征。反应物、水热温度和时间对 CuO 纳米结构的形貌和结构有很大的影响。通过增加水热时间，成功地制备出了花状和船状的 CuO 纳米结构。通过调节使用聚乙二醇（PEG）和 NH3·H2O，制备出了板状和椭圆形的 CuO 纳米结构。基于实验结果提出了形成机制，表明 PEG 和 NH3·H2O 都在 CuO 的形貌和结构形成中起重要作用。在存在过氧化氢（H2O2）的情况下，通过催化氧化亚甲基蓝（MB）来证明所制备的 CuO 纳米结构的催化活性。所制备的 CuO 纳米结构都表现出良好的催化活性。
