Edge-Preferential Graphitization and Nanoscale Structural Heterogeneity in Coal-Derived Carbon Revealed by High-Resolution Transmission Electron Microscopy (HRTEM)
Randomized trial reveals nanostructural evolution in coal-derived carbon, suggesting new insights for carbon utilization.
Key Points
This research aims to investigate the nanostructural evolution of coal-derived carbon during high-temperature thermal treatment.
Quantitative analysis using high-resolution transmission electron microscopy (HRTEM) on coal-derived carbon heat-treated up to 3000 °C.
Hypothesis testing of particle-edge preferential graphitization effects on nanostructural evolution.
Aromatic structural transformation shows length enhancement at 300 °C, 1000 °C, and 2550 °C, with decreases in small-size and increases in medium- and large-size lattice fringes.
Lattice fringe curvature displays a non-monotonic decrease with a transient increase, influenced by concentric and twisted nanostructures formation.