材料科学
纳米纤维
煅烧
静电纺丝
胶体金
热重分析
化学工程
聚合物
傅里叶变换红外光谱
纳米颗粒
纳米技术
制作
复合材料
有机化学
催化作用
病理
化学
工程类
替代医学
医学
作者
Xiaojiao Yang,Jun Li,Ying Liu
出处
期刊:Science of Advanced Materials
[American Scientific Publishers]
日期:2020-08-01
卷期号:12 (8): 1109-1115
标识
DOI:10.1166/sam.2020.3760
摘要
One-dimensional gold nanofibers are good candidates for next generation nanoelectronic devices. Here, gold nanofibers were synthesized via electrospinning with subsequent in-situ thermal reduction. The thermal behavior of the precursor nanofibers was investigated by thermogravimetric/differential thermal analysis and fourier transform infrared. The polymer parts are decomposed and removed step by step, meanwhile, gold salt is decomposed and in-situ reduced to form gold nanoparticles in air without any reducing agent or gas due to its strong oxidation ability. The effects of gold content, polymers type (PVP, PVA, PAN), calcination atmospheres (Air, H 2 , H 2 /Ar) and temperatures (200 °C to 500 °C) on the morphology and structures of gold nanofibers were characterized by XRD, SEM, and TEM. The results shows that PVP is the optimal polymer with the gold content of 6:1 (PVP:Au) to fabricate the continuous gold nanofibers with good morphology and structures. The final gold nanofibers with average diameter of 60 nm and several hundred micrometers long, were fabricated after calcined at 500 °C in air for 2 hours. It was composed of gold nanoparticles that ranged from 5 to 30 nm.
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