氨基酸修饰的纳米硫水溶胶的制备与性质  

Preparation and properties of Nano-sulfur hydrosol modified by amino acids

作　　者：钟艺峰[1] 谢新媛[1] 莫丽盈[1] 

机构地区：[1]暨南大学化学系,广东广州510632

出　　处：《暨南大学学报（自然科学与医学版）》2010年第3期299-302,共4页Journal of Jinan University(Natural Science & Medicine Edition)

基　　金：国家自然科学资金(20771044);广东省科技计划项目(2008A030201020)

摘　　要：以硫粉与硫化钠为起始原料,采用乙酸为沉淀剂,氨基酸作表面修饰剂制备纳米硫溶胶.通过透射电镜、激光散射、共振瑞利散射等手段对氨基酸修饰的纳米硫溶胶进行了表征.研究了水相中氨基酸对纳米单质硫的粒径调控和稳定化作用.结果表明:氨基酸通过控制单质硫的粒径进行表面修饰,使纳米硫粒径控制在较窄的粒度分布范围.其中,含硫氨基酸(胱氨酸、蛋氨酸)修饰的纳米硫溶胶最为稳定,粒径50～100 nm,形貌均为分散球形.The Nano-sulfur（Nano-S0） hydrosols were prepared by using sulfur powder and sodium sulfide as original materials,acetic acid as precipitating agent,and the sulfur-containing amino acids（methionine and cystine） as surface modifier.The as-prepared Nano-S0 was characterized by transmission electron microscope（TEM）,laser light scattering（LLS）,and resonance rayleigh scattering（RRS）.The modulation and stabilization effects of methionine and cystine on Nano-S^0 were also investigated.The results show that amino acids could effectively modulate the size,shape and stability of Nano-S^0 in liquid phase.For instance,the Nano-S^0 modified by methionine and cystine were stable and spherical,with narrow particle-size distributions in the range of 50-100 nm.

关 键 词：纳米硫溶胶 氨基酸修饰 水相 稳定化作用 

分 类 号：O613.51[理学—无机化学]