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Synthesis, Composition, and Properties of Partially Oxidized Graphite Oxides
Michal Lojka1, Boris Lochman1, Ondřej Jankovský2
1Department of Inorganic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic.
Materials (Basel, Switzerland)
|July 28, 2019
Summary
Researchers explored controlling graphite oxide oxidation levels by adjusting the oxidizing agent. This study offers insights for developing simple graphite oxide synthesis technologies with specific oxygen content.
Area of Science:
- Materials Science
- Chemistry
Background:
- Graphite oxide is a key material with tunable properties.
- Controlling the oxidation level is crucial for its applications.
Purpose of the Study:
- To prepare and characterize partially-oxidized graphite oxide.
- To investigate the effect of oxidizing agent quantity on oxidation level.
- To establish a method for synthesizing graphite oxide with desired oxygen content.
Main Methods:
- X-ray Photoelectron Spectroscopy (XPS) for C/O ratio and oxygen functionalities.
- Energy-Dispersive X-ray Spectroscopy (EDS) and Elemental Analysis (EA) for C/O ratio.
- Raman Spectroscopy and Cyclic Voltammetry for oxygen functionalities.
- Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD) for structure.
- Simultaneous Thermal Analysis-Mass Spectrometry (STA-MS) for thermal stability.
Main Results:
- The C/O ratio was successfully evaluated using XPS, EDS, and EA.
- Oxygen functionalities were characterized by XPS, Raman spectroscopy, and cyclic voltammetry.
- Structural properties were analyzed using SEM and XRD.
- Thermal stability was assessed via STA-MS.
Conclusions:
- The amount of oxidizing agent influences the oxidation level of graphite oxide.
- This research provides a foundation for designing simple graphite oxide synthesis with controlled oxygen content.
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