Abstract
The facile fabrication of hollow and honeycomb-like carbon spheres from liquefied larch sawdust by ultrasonic spray pyrolysis has been reported. The morphology and porous structure of the carbon spheres are investigated. The cross-linked spherical morphology observed at 700°C breaks down above 800°C. The size of the obtained carbon spheres increases from 600 to 900nm at 5% solution concentration to 0.6–1.5μm and 0.6–2.0μm at 10% and 15%, respectively. The optimal carbon spheres prepared with 5% solution concentration and 800°C possess a honeycomb-like structure, uniform size (600–900nm) and narrow pore size distribution (1.8–2.5nm). The well-developed porous structure and uniform size distribution can endow the carbon spheres with high methyl orange adsorption capacity (140mg/g).
Published Version
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