EFFECT OF PROCESSING PARAMETERS ON THE SYNTHESIS OF LIGNIN-BASED GRAPHENE-ENCAPSULATED COPPER NANOPARTICLES
Keywords:
Effect, temperature, Graphene encapsulated copper nanoparticlesAbstract
Graphene-encapsulated copper nanoparticles (GECNs) can be applied in the wood protection
industry. In this study, a simple thermal treatment was applied to a mixture of kraft lignin and copper
sulfate for the synthesis of GECNs. The effect of temperature, duration time, temperature rising ramp, and
argon gas flow rate were investigated on the quality of the GECNs. Temperature was found to be the most
important factor in the growth of graphene; high temperature was preferred to obtain less defective
graphene shells. Gas flow rate, duration time, and temperature rising ramp had less effect. The optimum
synthesis parameters were proposed as 1000C, 30-min duration time, 20C/min temperature rising ramp,
and 1200-sccm argon gas flow rate. Results showed that postheat treatment was a feasible way to improve
the crystallinity of graphite.
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