Synthesis of Carbon Quantum Dots (CQDs) from Coal and ElectrochemicalCharacterization
Ohio University / OhioLINK, 2019
Hochschulschrift
Zugriff:
Carbon quantum dots (CQDs) were synthesized using two top-down approaches from bituminous coal. More specifically, perchloric acid and hydrogen peroxide were used as oxidizer agents for CQDs synthesis. An acid recovery system was suggested for method of synthesis by perchloric acid to make this synthesis route more efficient. 30% CQDs production yield was achieved by adding a liquid charging pipette to the method of synthesis by hydrogen peroxide. By adding MoS2 to CQDs that were synthesized by perchloric acid, the specific capacitance increased up to 130 F/g from 12 F/g. Size of CQDs synthesized by hydrogen peroxide were 3.26 nm on average and showed a specificcapacitance as high as 200 F/g with more than 15000 charge-discharge cycle stability with 90% capacitance retention.CQDs physical and electrochemical properties were investigated by different characterization methods such as transmission electron microscopy (TEM), Fouriertransform infrared spectroscopy (FTIR), ultraviolet–visible spectroscopy (UV-Vis), scanning Electron Microscopy (SEM), cyclic voltammetry (CV), and galvanic charge discharge (GCD).
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Synthesis of Carbon Quantum Dots (CQDs) from Coal and ElectrochemicalCharacterization
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Autor/in / Beteiligte Person: | Rostami, Mohammadreza |
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Veröffentlichung: | Ohio University / OhioLINK, 2019 |
Medientyp: | Hochschulschrift |
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