Investigation of hydrothermal process time on the size of carbon micro- and nano-spheres

Journal of Optoelectronical Nanostructures

مقاله 6، دوره 2، شماره 2 - شماره پیاپی 5، مرداد و شهریور 2017، صفحه 51-60   

نوع مقاله: Articles

نویسندگان

Khadijeh Hemmati Kahradeh؛ Esmaiel Saievar-Iranizad^* ؛ Amir Bayat

Department of Physics, Faculty of Basic Science, Tarbiat Modares University, Tehran, Iran.

تاریخ دریافت: 19 آذر 1395،  تاریخ بازنگری: 05 بهمن 1395،  تاریخ پذیرش: 06 بهمن 1395 

چکیده

In this study, carbon nano-micro spheres with tightly controllable size, regular
and perfect shape, high yields and narrow size distribution were prepared simply from
glucose and DI water as precursors using a hydrothermal method. By setting the initial
concentration of glucose solution and changing the hydrothermal process time at a
constant temperature of 160 °C, carbon spheres with various sizes were synthesized in a
sealed autoclave. The relationship between the average carbon sphere size and
hydrothermal process time has been discussed. By increasing the hydrothermal process time
at a constant temperature (160 ° C) and a constant concentration of glucose solution (0.75 molar),
carbon nano-micro spheres were obtained. The diameters of carbon nano-micro spheres
synthesized in this study ranged from 90 nm to 4.5 μm. The obtained carbon nano-micro
spheres were analyzed by different techniques including scanning electron microscopy
(SEM), X-ray diffraction patterns (XRD), energy dispersive spectrometry (EDS) and
Raman analysis. In addition, the existence of surface functional groups on carbon
nano/micro spheres was characterized by Fourier transform infrared (FTIR)
measurements.

کلیدواژه‌ها

Carbon microspheres؛ Carbon nanospheres؛ Hydrothermal process

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