CAJ | 학술논문

研究了~(60)Coγ射线辐照硝酸银水溶液体系制备纳米银粉.利用XRD、TEM、DSC、LSPSDA分别表征了材料的物相、粒径、形貌、以及熔点.结果表明,表面活性剂(PCM)在0.6-2.2g/100mL范围内,反应得到的纳米银粒子的粒径随浓度的增加而减小,纳米银粒子的熔点随着粒径的减小而减小.表面活性剂浓度为2.2 g/100 mL时,粒径最小可达到19.9 nm,相应熔点为126.18℃.不同PH值的辐照溶液所得产物均为单质银颗粒,银盐溶液的酸碱性对其辐照产物基本不产生影响.
연구료~(60)Coγ사선복조초산은수용액체계제비납미은분.이용XRD、TEM、DSC、LSPSDA분별표정료재료적물상、립경、형모、이급용점.결과표명,표면활성제(PCM)재0.6-2.2g/100mL범위내,반응득도적납미은입자적립경수농도적증가이감소,납미은입자적용점수착립경적감소이감소.표면활성제농도위2.2 g/100 mL시,립경최소가체도19.9 nm,상응용점위126.18℃.불동PH치적복조용액소득산물균위단질은과립,은염용액적산감성대기복조산물기본불산생영향.
~(60)COγrays irradiation method was used to prepare nano-particle silver in aqueous solution.The structure,morphology,size and the melting point had been characterized by X-ray diffractometer(XRD),Transmission Electron Microscopy(TEM),and Differential Scanning Calorimeter(DSC).The results show that the size of gained particles decreases with increment of PCM concentration and the melting point becomes smaller with decrement of the particle size,while the concentration is changed from 0.6g/100mL to 2.2g/100mL.The smallest size of silver nano-particle is 19.9 nm,and the melting point is 126.18℃ when the concentration is 2.2 g/100 mL.The pure silver nano-particles have been obtained at different pH.It is found that nle pH of the aqueous solution has no effect on the constitution of the sample.