Hydrothermal Synthesis of Carbon Nanospheres

TL;DR

This study demonstrates the controlled synthesis of carbon nanospheres with tunable sizes and properties using hydrothermal methods, and analyzes their structural, optical, and thermal characteristics.

Contribution

It introduces a method to control the size and morphology of carbon nanospheres via temperature regulation in hydrothermal synthesis.

Findings

Particles range from 50 nm to 300 nm in size.

Calcination reduces particle size and modifies morphology.

Particles become crystalline and thermally stable after 520°C.

Abstract

The experiment was conducted to synthesize carbon nanospheres of different sizes by controlling the temperature in polycondensation reaction of glucose under hydrothermal process. The surface morphology, structural, optical, and thermal properties of as synthesized particles were characterized using TEM, SEM, XRD, Raman spectroscopy, TGA, and DSC. The particles morphology and dispersity were modified and reduced their size after calcination at $500^{o} C$ in comparison to those without calcinated. Thermal study also indicates particles change their phase from amorphous to crystalline and achieve thermal stability after $520^{o}C$, which can also be verified by presence of D-band and G-band in Raman spectrum. Overall results indicate that the carbon nanospheres are hard solids and highly dispersed with size ranges from 50 nm to 300 nm.