还原剂参量对金纳米颗粒的影响  

Effects of Reductant Amounts on Au Nanoparticles

作　　者：刘斌[1] 毛斌[1] 宋玉哲[1] 王运福[1] 刘国汉[1] 

机构地区：[1]甘肃省科学院传感技术研究所,甘肃兰州730000

出　　处：《甘肃科学学报》2009年第2期48-50,共3页Journal of Gansu Sciences

基　　金：甘肃省科学事业费项目(QS001-C32-01)

摘　　要：采用柠檬酸三钠还原氯金酸,制备了金纳米颗粒.研究了还原剂参量对金纳米颗粒形貌、粒径和分散性的影响.结果表明:在其他条件不变的情况下,适量的还原剂,不同的取样时间可得不同粒径大小且分散性佳的球形颗粒;特定的取样时间下,还原剂用量不足或过量,颗粒大小也随之变化并且易团聚.The colloidal gold particles were synthesized by reducing hydrogen chloroaurate with sodium citrate. Meanwhile,the effects of the amounts of reducing agent and reaction time on the morphologyies, particle size and dispersity of products were investigated. The results indicate that well dispersed spherical gold particles with different diameters were obtained by changing reaction times under given reducing agent volumes. On the other hand, diameter changing and agglomeration have been caused by insufficient or excessive amounts of reducing agent.

关 键 词：金纳米颗粒 还原剂参量 反应时间 

分 类 号：O611.4[理学—无机化学]