Chemical Networks And Photoluminescence Properties Of Carbon Nanoparticles Derived Via Sol-gel Method

Umesh Rizal1, Bhabani S. Swain2, Bibhu P. Swain1*

1Nano-Processing Laboratory, Centre for Material Science and Nanotechnology, Sikkim Manipal Institute of Technology, Majitar, Rangpo 737136, East Sikkim, India

2School of Advanced Material Engineering, Kookmin University, Jeongnung-dong, Sungbuk-gu, Seoul, Korea

Adv. Mater. Lett., 2017, 8 (1), pp 77-81

DOI: 10.5185/amlett.2017.6423

Publication Date (Web): Nov 12, 2016

E-mail: bibhuprasad.swain@gmail.com

Abstract


We have synthesized carbon nanoparticles (CNPs) via the sol-gel method using dextrose as carbon source with different concentration of ethanol. The effects of ethanol concentration (0.2 to 2.0 M) on the chemical network, electrochemical and photoluminescence properties of CNPs were examined using Fourier transform infra-red (FTIR) spectroscopy, Raman spectroscopy, cyclic voltammetry and photoluminescence (PL) spectroscopy. Field emission scanning electron microscopy (FESEM) image of CNPs shows CNPs of 40-80 nm were synthesized by sol-gel method. Chemical network study reveals the presence of various bonds such as C-H, C-H2, C-H3 and aromatic carbon present on the surface of the CNPs. Raman spectra shows that increasing of ethanol concentration decreases the crystalline size of CNPs. Cyclic voltammetry analysis shows prominent oxidation peaks at 0.1-0.2 V whereas the reduction peak observed at 0.2 V. The observed room temperature PL peak at 2.9 eV confirms a blue emission from CNPs.

Keywords

Carbon nanoparticles, chemical networks, cyclic voltammetry, photoluminescence.

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