【摘要】 在pH=3的酸性条件下,以硫酸镉和硫代乙酰胺(TAA)为反应前驱体,采用十六烷基三甲基溴化铵(CTAB)自组装形成的管状胶束(PVAC)为模板,通过γ射线辐照法成功合成了CdS纳米棒,并通过XRD、UV-Vis、SAED、TEM和PL等技术对反应中间产物及最终产物进行了表征。研究表明,该方法在Cd2+浓度为0.015mol·L~-1、辐照剂量为15～20kGy时,可获得直径在100nm以下,长度在3μm以上的CdS纳米棒;并且较低的辐照剂量和反应物浓度有利于获得较大长径比的CdS纳米棒。更多还原

【Abstract】 CdS nanoarods have been synthesized by using Cetyltrimethyl Ammonium Bromide (CTAB) as the soft template under γ-irradiation through the reaction of cadmium sulphide (CdSO4·8/3H2O) and thiacetamide (TAA) in acidic condition for pH value of 3. The physical and chemical properties and the structure of CdS nanorods were characterized by XRD, UV-Vis, SAED, TEM and PL. The results indicate that CdS nanorods synthesized by soft template method are below 100 nm in diameter and above 3 nm in length, and low irradiative dosage and concentration of reactants can accelerate the formation of CdS nanorods with higher length-to-diameter factor about 30:1 range.更多还原