An experiment was conducted to synthesize carbon
nanospheres of different sizes by controlling the temperature in
polycondensation reactions of glucose under hydrothermal processes.
Morphological, structural, thermal, and optical properties of as-synthesized
particles were characterized using a transmission electron microscope (TEM),
scanning electron microscope (SEM), X-ray diffractometer (XRD), thermal
gravimetric analysis (TGA), diffraction thermal analysis (DTA), and Raman
spectroscopy. Thermal study indicates that particles change their phase from amorphous
to crystalline before achieving a thermal stability at 520℃. The presence of D-band and G-band in the
Raman spectrum also verifies amorphous and crystalline natures of the sample.
It has also been observed that the particle’s morphology, dispersity, and size
were modified after calcination of samples at 500℃ in comparison to those not calcinated.
Overall results indicate that the carbon nanospheres are hard solids and highly
dispersed with size ranges from 50 nm to 260 nm.
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