Glucose-Derived N-Doped Graphitic Carbon: Facile One-Pot Graphitic Structure-Controlled Chemical Synthesis with Comprehensive Insight into the Controlling Mechanisms

摘要

Modification of graphitic structure chemistry and physics affords the N-doped graphitic carbonaceous materials(NGCMs)superior and novel functional properties,which is essential for substantial development of applications based on such materials.The present research provides novel simple structurecontrolled chemical synthesis of NGCM.NGCM is grown from cyclic polymerization of glucose molecules upon hydrothermal treatment,employing Cetyltrimethylammonium bromide(CTAB)and ammonia as structure-directing agents.Hydrothermal temperature and CTAB dose were manipulated and the produced graphitic structure has been explored in terms of oxidation state,N-doping,surface functionalization with CTAB and morphology.NGC derivatives of various structural features are obtained.Products range from oxidized graphitic carbon of mixed micro-sized sphere/sheet morphology to highly-reduced graphene-like nanosheets;the C/O atomic ratio increases from 8.2-12.4 and sheet thickness downs from 30 μm-~1 nm.Also,N-doping configurations and graphitic surface functionalization by CTAB are greatly influenced.CTAB plays the key role in setting the graphitic structure characteristics.Additionally,ammonia has a modest effect.Understanding of the controlling mechanisms is focused.The effective and ease control of graphitic structure via this facile,economic and ecofriendly synthesis approach,can benefit the design of NGCM with tuned functional properties for specific applications in technological industries.