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将相反电荷的纳米Au和纳米CdTe通过静电作用得到纳米复合Au/CdTe粒子。在水溶液中分别用二甲氨基吡啶和巯基丙酸稳定纳米Au和CdTe粒子,使其表面分别带有正电荷与负电荷。Au/CdTe纳米复合材料的表面等离子体吸收光谱随着Au含量的增加而红移,表明纳米复合Au/CdTe粒子的长大是由于配位形成而引起的。纳米Au和纳米CdTe的比影响纳米复合Au/CdTe粒子的结构。复合纳米Au/CdTe粒子的尺寸和形状是影响金属/半导体纳米复合材料性能的重要参数。用小角X射线散射技术、透射电子显微镜、循环伏安法和X射线光电子能谱来表征纳米复合Au/CdTe粒子。
The oppositely charged nano-Au and nano-CdTe are electrostatically obtained to obtain nanocomposite Au / CdTe particles. In the aqueous solution, respectively, with dimethylaminopyridine and mercaptopropionic acid to stabilize the nano-Au and CdTe particles, so that the surface with a positive charge and a negative charge, respectively. The surface plasmon absorption spectra of Au / CdTe nanocomposites redshift with the increase of Au content, which indicates that the growth of nanocomposite Au / CdTe particles is due to the coordination formation. The ratio of nano-Au to nano-CdTe affects the structure of nanocomposite Au / CdTe particles. The size and shape of the composite nano-Au / CdTe particles are important parameters that affect the performance of the metal / semiconductor nano-composite. The nanocomposite Au / CdTe particles were characterized by small-angle X-ray scattering, transmission electron microscopy, cyclic voltammetry and X-ray photoelectron spectroscopy.