Monteiro Olinda C, Neves Márcia C, Trindade Tito
Chemistry Department, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal.
J Nanosci Nanotechnol. 2004 Jan-Feb;4(1-2):146-50. doi: 10.1166/jnn.2004.024.
A chemical method to coat submicron silica particles with nanocrystalline zinc sulfide is described. The ZnS nanocoating was obtained by the thermalysis of zinc diethyldithiocarbamate in the presence of morphologically well defined silica particles. The powders obtained were isolated and were characterized by UV/visible optical reflectance, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results showed that the silica surfaces became homogeneously coated with ZnS as the reaction time was increased. This coating consists in clusters of small ZnS particles whose dimensions are within the nanometric range.
描述了一种用纳米晶硫化锌包覆亚微米二氧化硅颗粒的化学方法。通过在形态明确的二氧化硅颗粒存在下热解二乙基二硫代氨基甲酸锌来获得ZnS纳米涂层。将得到的粉末分离出来，并通过紫外/可见光学反射率、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线衍射（XRD）和X射线光电子能谱（XPS）进行表征。结果表明，随着反应时间的增加，二氧化硅表面被ZnS均匀包覆。这种涂层由尺寸在纳米范围内的小ZnS颗粒簇组成。
