(1. 中南大學(xué) 粉末冶金國家重點(diǎn)實(shí)驗(yàn)室，長沙 410083;
2. 中南大學(xué) 冶金科學(xué)與工程學(xué)院， 長沙 410083)
摘 要: 采用均相沉淀法制備單分散的ZnS和CdS納米微粒， 考察了溶劑熱處理對CdS和ZnS粉末結(jié)構(gòu)形貌的影響。 結(jié)果表明： 采用溶劑熱處理， 粉末形狀呈現(xiàn)負(fù)離子配位多面體生長特征， 閃鋅礦型ZnS粉末由球形變?yōu)殡p錐狀或四面體狀， 顆粒上有明顯的電子衍射花紋； 閃鋅礦型CdS晶體粉末主要呈四面體形狀， 而纖鋅礦型CdS晶體粉末則以錐狀為主， 并且粉末的晶型隨溶劑熱處理溫度的升高和時間的延長更趨于完整。 該工藝能同時進(jìn)行脫水、 除雜和晶化，具有防止氧化、 有機(jī)試劑易于回收和能工業(yè)化等優(yōu)點(diǎn)。
關(guān)鍵字: 溶劑熱處理； CdS； ZnS； 結(jié)構(gòu)形貌； 超細(xì)粉末
structures and morphologies of ZnS and CdS ultrafine powders
（1. State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China;
2. College of Metallurgical Science and Engineering,
Central South University, Changsha 410083, China）
Abstract:A novel homogenous precipitation method was developed for the preparation of monodisperse ZnS and CdS ultrafine particles, and the effects of solvent thermal treatment on the structures and morphologies of ZnS and CdS particles were investigated. The results show that the particles character as the growth of anion coordination tetrahedron during solvent thermal treatment, where blende-type ZnS particle is in the shape of double cone or tetrahedron, blend-type CdS appears as the tetrahedron, but wurtzite-type CdS is in the shape of cone. In addition, the particles with the better crystallinity are obtained with the increase of solvent thermal treatment temperature and time. This technology has such advantages as moving water and impurities, protecting CdS from oxidation and easily recycling organic reagent and so on.
Key words: solvent thermal treatment； CdS； ZnS； structure and morphology； ultrafine powders
