摘要
采用核-壳法制备纳米银中空微粒,用透射电镜、扫描电镜分析了单质Ag、Ag/PS、Ag/PS/Ag微粒的结构,并探讨了苯乙烯、乳化剂及Ag+加入量对微粒包裹程度和规整度的影响。实验结果表明:当AgNO3用量为0.002mol,苯乙烯加入量为3mL,乳化剂加入量为0.4g,Ag+加入量为0.002mol时,可制得包裹完善、外形规整复合微粒,最后用高温煅烧的方法,可制备具有中空结构的纳米银核-壳粒子。
Nano-silver particles with hollow structure were prepared by a core-shell method. The structure of elemental nano silver, Ag/PS composite and Ag/PS/Ag composite was analyzed by TEM and SEM. The influences of the amounts of PS, Ag＋ and emulsifier on encapsulation degree and structure regularity of the particles were discussed. The results show that when the amount of AgNO3 is 0. 002 mol, with the addition amount of PS 3 mL, emulsifier 0.4 g and Ag＋ 0. 002 tool, the encap- sulated and structured composite particles can be obtained, and from which by high temperature calci- nation, the nano-silver particles with hollow structure can be prepared.
出处
《精细石油化工》
CAS
CSCD
北大核心
2012年第3期18-21,共4页
Speciality Petrochemicals
关键词
纳米银
核-壳法
自组装
中空纳米微粒
nano-silver
core-shell method self-assemble hollow nanoparticles
