摘要
近年来,纳米材料在石油化工和化工催化领域得到非常广泛的应用。利用水热/溶剂热法,通过在室温下水溶液中醋酸铅和二乙基二硫代氨基甲酸钠的沉淀反应,合成出了单分子前驱体Pb-DDTC;然后,在没有使用任何表面活性剂或模板的情况下,分别在以水、无水乙醇、乙二醇和乙二胺作为反应介质的不同溶剂中,很好地合成出了粒径为50～100nm的PbS纳米晶。并利用X射线衍射(XRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)等多种测试手段对所得纳米晶体进行了表征,证实了所得晶体均为PbS纳米级纯相晶体,且溶剂的选择对产品的形貌具有一定的影响。
In recent years,nano-composite materials have been widely applied in the fields of petroleum chemical engineering and chemical engineering catalyst.The synthesis of PbS nanocrystallites from an air-stable single-source molecular precursor (lead diethyldithiocarbamate:Pb-DDTC) under mild conditions is achieved by two simple steps,firstly,the Pb-DDTC is directly prepared through the precipitation reaction of lead acetate and sodium diethyldithiocarbamate in distilled water at room temperature,secondly,without the use of any extra surfactant/template,pure PbS nanocrystallites with different shape can be obtained just via solvothermal decomposition of the Pb-DDTC in four different solvents (including water,ethanol,ethylene glycol,ethylenediamine).The obtained PbS nanocrystallites with the diameter of 50～100 nm are characterized by X-Ray Diffractometer(XRD),Scanning Electronic Microscope(SEM)and Transparent Electronic Microscope(TEM),etc.It is proved that the obtained crystallites are pure PbS nanocrystallites with the diameter of 100～200 nm.The selection of different solvents has an influence on the feature of the products.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第1期138-140,共3页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
PbS纳米晶
单分子前驱体
水热/溶剂热
石油化工
化工催化
(PbS)nanocrystallites
single-source molecular precursor
hydrothermal/solvothermal
petroleum chemical engineering
chemical engineering catalyst
