Synthesis of carbon microspheres under ambient pressure
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A convenient and simple method for the synthesis of carbon microspheres (CMSs) by hydrothermal procedure at very low temperature of 95 °C has been developed. This method used glucose as the precursor to prepare CMSs in the presence of hydrochloric acid under ambient pressure and greatly reduce the reaction temperature. XRD, SEM, FT-IR and Raman spectroscopy were used to characterize the as-synthesized products. The results indicated that polymerization and yield of CMSs under ambient pressure were promoted by hydrochloric acid and there were abundant of –OH and –C=O chemical groups on the surface of the as-prepared CMSs. This work should be valuable to facilitate cost-efficient conversion of biomass into bio-based products.
KeywordsCarbon microspheres Ambient pressure Low temperature
The authors gratefully acknowledge the support of this research by the National Natural Science Foundation young investigator grant program (Grant No.61603001), and National University Students Innovation Project of China (Grant No. 201710364011).