以ZnO粉和石墨粉为原料,用碳热还原法获得了分区生长的多种形貌ZnO晶体。采用XRD、FESEM、HRTEM、EDS和PL谱等测试手段分别对产物进行了分析表征。结果表明:所得产物均为六方纤锌矿ZnO晶体,但具有不同的晶体形态特征。浅黄色产物主要为四足和两足状ZnO晶须,白色产物为单一片状ZnO晶体。同时初步分析和讨论了产物分区生长的原因和生长机理。
Using zinc oxide and carbon powder as raw material, different shaped ZnO crystals are obtained in different area by the carbothermal reduction method. The as-synthesized ZnO products are characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), high-resolution transmission (HRTEM) and photoluminescence (PL) spectrum, etc. The results show that both of them are hexagonal wurtzite ZnO crystals. But they have different shapes. The light yellow products mainly include tetrapod-like and biped-like ZnO whiskers, while the white products are single ZnO nanosheets. The reason for zonal growth and the growth mechanism are preliminarily discussed at the same time.