氮掺杂石墨烯量子点/钯纳米复合材料的研究

Study of Nitrogen-Doped Graphene Quantum Dots Supported Palladuim Nanocomposites

铂基催化剂因具有高催化活性、高稳定性而成为极其重要的能源转化催化剂。本文采用水热法合成氮掺杂石墨烯量子点支撑的钯纳米复合材料(Pd@N-GQDs),并将其用于碱性介质中甲醇的电催化氧化反应。实验结果表明,相比同类型材料钯负载于石墨烯纳米片(Pd@GS)、钯负载于石墨烯量子点(Pd@GQDs)和商业钯黑催化剂(Pd@C),Pd@N-GQDs纳米材料具有很高的催化活性和稳定性,并可减少催化剂材料中贵金属的使用量。

With high catalytic activity and high stability,Platinum-based nanomaterials become important energy conversion catalysts.Herein,we report a facile one-pot hydrothermal approach to prepare a novel nitrogen-doped graphene quantum dots（N-GQDs）supported palladuim nanocomposite.The Pd@N-GQDs nanocomposite demonstrates an excellent assembling nanostructures for the electrocatalytic oxidation of methanol in an alkaline medium when compared with the graphene sheets supported Pd nanocomposites（Pd@GS）,graphene quantum dots supported Pd nanocomposites（Pd@GQDs）and commercial palladium catalyst（Pd@C）.The Pd@N-GQDs nanocomposite offers a promising and attractive perspect by reducing the noble metal dosage in electronic materials which possess high catalytic activity and stability.