Deposition of silver nanoparticles on carbon nanotube by chemical reduction method: Evaluation of surface, thermal and optical properties
Deposition of silver nanoparticles on carbon nanotube by chemical reduction method: Evaluation of surface, thermal and optical properties
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DOI：
10.1016/j.spmi.2012.04.015
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发表时间：
2012-07-01
影响因子：
3.1
通讯作者：
Kiumarsi, Amir
中科院分区：
文献类型：
--
作者：
Alimohammadi, Farbod;Gashti, Mazeyar Parvinzadeh;Kiumarsi, Amir
以N，N-二甲基甲酰胺（DMF）为还原剂，采用化学还原技术将银稳定在多壁碳纳米管（MWCNTs）上。采用傅里叶变换红外光谱（FTIR）、拉曼光谱（RAS）、热重分析（TGA）、zeta电位测量、扫描电子显微镜（SEM）、电子色散x射线光谱仪（EDX）、透射电子显微镜（TEM）和反射光谱（RS）研究了银对碳纳米管（CNTs）性能的影响。红外光谱和红外光谱分析表明，化学还原法制备的方法是成功的。在氧气气氛下对样品进行热重分析，结果表明，纳米银纳米颗粒（Ag NPs）在MWCNTs表面的氧化作用降低了纳米银纳米颗粒的热稳定性。相反，在氮气气氛下，MWCNTs的热稳定性得到了改善。EDX结果表明，沉积样品表面存在Ag、Au和Co。与未经处理的颗粒相比，合成的银多壁碳纳米管（Ag-MWCNTs）具有更高的紫外线反射活性。Ag-CNTs可用于制备抗紫外复合材料。(C) 2012 Elsevier Ltd.版权所有。
Silver was stabilized on multi-walled carbon nanotubes (MWCNTs) by chemical-reduction technique using N,N-dimethylformamide (DMF) as a reducing agent. The influence of silver on the performance of carbon nanotubes (CNTs) was investigated by employing Fourier-transform infrared spectra (FTIR), Raman spectroscopy (RAS), thermal gravimetric analysis (TGA), zeta potential measurement, scanning electron microscope (SEM), electron dispersive Xray spectrometer (EDX), transmission electron microscopy (TEM), and reflectance spectroscopy (RS). FTIR as well as RS methods evidenced the synthesis procedure using chemical reduction method was successful. Performing TGA of the samples under oxygen atmosphere demonstrated that the silver nanoparticles (Ag NPs) generated on MWCNTs surface can decrease the thermal stability of the particles by the catalytic oxidation of CNTs. In contrary, the thermal stability of the MWCNTs has improved under nitrogen atmosphere. EDX results showed the presence of Ag, Au and Co on the surface of deposited sample. The synthesised silver multi-walled carbon nanotubes (Ag-MWCNTs) were found to have higher UV reflection activity compared with untreated particles. The Ag-CNTs can be used in producing anti-UV composites. (C) 2012 Elsevier Ltd. All rights reserved.