Effect of Thermal Annealing on Optical Properties of Carbon Nitride Nanostructures Synthesized by Discharge-Induced Reaction of Methane and Ammonia
Abstract
In this work, effect of thermal annealing on the optical characteristics of carbon nitride nanostructures synthesized by discharge-induced reaction of methane and ammonia was studied. These nanostructures were annealed at 200°C, 300°C, and 400°C and then their absorbance and energy band gaps were compared to those of as-prepared nanostructures. It was found that the annealing leads to decrease the absorbance and enlarge energy band gap from 2.6 to 2.77 eV for the sample annealed at 400°C.
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