摘要
利用种子生长法,分别用盐酸羟胺和抗坏血酸作还原剂合成了不同大小的金纳米颗粒。研究了不同还原剂对金纳米颗粒形貌、粒径和单分散性的影响。实验结果表明,用盐酸羟胺作还原剂合成的金纳米颗粒的单分散性较好。这主要是由于盐酸羟胺的还原性弱于抗坏血酸,反应过程中不会发生二次成核。
Au nanoparticles with different sizes were synthesized by seeding growth method using hydroxylamine hydrochloride or ascorbic acid as reductants.The effects of different reductants on the morphology,particle size and monodispersity of products were investigated.The results showed that monodispersity of Au nanoparticles synthesized using hydroxylamine hydrochloride was better than that of ascorbic acid.This is mainly due to the weaker reducibility of hydroxylamine hydrochloride compared to ascorbic acid and the absence of the secondary nucleation.
出处
《化学世界》
CAS
CSCD
北大核心
2011年第3期129-132,共4页
Chemical World
关键词
种子生长法
金纳米颗粒
二次成核
单分散性
seeding growth method
Au nanoparticles
secondary nucleation
monodispersity
