Modification Of Graphitic Carbon Nitride As Photocatalyst For Photocatalysis

Carbon nitride?g-C₃N₄?has attracted significant interest in the last years as a robust,low-cost alternative to metal-based materials in different fields due to its low price,environmentally benign character,simple synthesis and tunable properties.In particular,g-C₃N₄ demonstrates promising activity in energy-related applications such as photo and heterogeneous catalysis,batteries and electrolysis.However,while g-C₃N₄ is already well-established as a photocatalyst,its utilization in?opto?electronic devices is still at an early stage.Therefore,this article though protonaion to improve its solubility and than graft conjugate ligands to improve its photocatalytic performance.?1?Thermal decomposition was used to prepare g-C₃N₄,protonizing g-C₃N₄ under concentrated sulfuric acid,and in this way,p-g-C₃N₄ was synthesized.Its structure has no change before and after peeling,determined by XRD,and the BET result shoes that after peeling,its specific surface area increases from 7.14 m²·g^-1 to 17.64 m²·g^-1.Moreover,the solubleness of p-g-C₃N₄ has changed,it can be dissolved in DMSO and glycol,and the solubility increases with the increase of solution temperature.?2?Use cyanogen chloride as bridging agent,loading p-g-C₃N₄ to parcel cellulose Fe₃O₄ magnetic microspheres,and in this way,p-g-C₃N₄/Fe₃O₄ was obtained.XRD?IR?VSM?TG was used to research its property.The result shows that p-g-C₃N₄/Fe₃O₄ has superparamagnetism,which means it can be easily recycled with external magnetic field.The catalytic activity was studied with the methyl red pollution as the substrate under ultraviolet light.The result shows that the degradation rate of methyl reached 84.26% after 90 min.?3?Mechanical grinding was used to prepare p-g-C₃N₄/Fe₂?SO₄?₃/C₃H₄N₂,Using Fe³⁺ as central ion,imidazole and p-g-C₃N₄ as ligand.XRD ? IR ? TG was used to research its property.And The catalytic activity was studied with the methyl red pollution as the substrate under ultraviolet light.The result shows that the degradation rate of methyl reached 98.1%after 90 min.