Rapid Preparation And Properties Of Carbon And Its Hybrid Materials

Carbon materials possess wide application prospect in chemistry field due to the excellent physical and chemical properties.In this dissertation,nitrogen-doped carbon quantum dots,Ag/C hybrid nanomaterials and Pd/C nanocomposites were obtained by a rapid chemical method.The morphology and chemical composition of the composites were investigated by characterizations such as transmission electron microscopy,X-ray diffraction and X-ray photoelectron spectroscopy.Furthermore,the prepared nitrogen-doped carbon quantum dots own well-performed fluorescent properties,which are employed to detect Fe³⁺with a detection limit 0.5?mol/L.The nonenzymatic electrochemical sensor based on the as-prepared Ag/C hybrid nanomaterials exhibits fast and stable detection behavior towards the reduction of hydrogen peroxide.Pd/C composites show good electrocatalytic performance towards the oxidation of organic molecules like methanol,which possess great application prospect in the field of fuel cell.