Laser assisted synthesis of carbon nanoparticles with controlled viscosities for printing applications

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:447

Article

Bagga, K.^1,2,3  McCann, R.^1,2,3,4  Wang, M.^1,2,3  Stalcup, A.²  Vazquez, M.^1,2  Brabazon, D.^1,2,3,4 

[1] Dublin City Univ, Adv Proc Technol Res Ctr, Dublin 9, Ireland

[2] Dublin City Univ, Irish Separat Sci Cluster, Dublin 9, Ireland

[3] Dublin City Univ, Sch Mech & Mfg Engn, Dublin 9, Ireland

[4] Dublin City Univ, NCPST, Dublin 9, Ireland

关键词: Carbon nanoparticles;    Laser ablation in liquid;    High frequency laser;    Polyynes;    Viscosity;    Nano-ink;    Printing applications;    Absorption spectroscopy;    Transmission electronic microscopy;   

DOI  :  10.1016/j.jcis.2014.10.046

来源: Elsevier

【 摘 要 】

High-quality carbon nanoparticles with controlled viscosity and high aqueous stability were prepared by liquid-phase laser ablation of a graphite target in deionized water. The size distribution was found to vary from 5 nm to 50 nm with mean size of 18 nm, in the absence of any reducing chemical reagents. Efficient generation of short chain polyynes was recorded for high laser repetition rates. Homogeneous and stable nanoparticle suspensions with viscosities ranging from 0.89 to 12 mPa.s were obtained by suspending the nanoparticles in different solvent mixtures such as glycerol-water and isopropanol-water. Optical properties were investigated by absorption and photoluminescence spectroscopy. Raman spectroscopy confirmed graphitic-like structure of nanoparticles and the surface chemistry was revealed by Fourier-transform infrared spectroscopy demonstrating sufficient electrostatic stabilization to avoid particle coagulation or flocculation. This paper present an exciting alternative method to engineer carbon nanoparticles and their potential use as a ligand-free nano-ink for ink jet printing (jetting) applications. (C) 2014 Elsevier Inc. All rights reserved.

【 授权许可】

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