论文部分内容阅读
本文采用修正的Hurnmers方法制备了氧化石墨,通过超声波剥离得到氧化石墨烯溶液,用水热法进行还原,制得三维石墨烯。结果表明,制备的三维石墨烯材料具有多孔结构,且还原后某些含氧基团消失。所构建的酶生物燃料电池以三维石墨烯(GN)为载体,以麦尔多拉蓝(MB)为导电介体,用Nafion(NF)固定甘油激酶(GK)和甘油-3-磷酸氧化酶(GPO)制备阳极催化电极,并以Pt/C作为阴极催化剂。结果显示,基于NF/GN/MB酶修饰碳纸电极的甘油酶生物燃料电池具有良好的放电性能,开路电位达到0.77 V,并在0.42 V取得最大功率密度42.05μW/cm2。论文中对该酶生物燃料电池的组装、工作条件等进行了优化,用极化曲线法和交流阻抗法对其性能进行了评价。该酶生物燃料电池将为生物柴油副产物甘油的处理,提供一种清洁可靠的能源再利用方式。
In this paper, a modified Hurnmers method was used to prepare graphite oxide. The graphene oxide solution was obtained by ultrasonic stripping, and then hydrothermally reduced to obtain three-dimensional graphene. The results show that the prepared three-dimensional graphene material has a porous structure, and some oxygen-containing groups disappear after the reduction. The constructed biofuel cells were characterized by three-dimensional graphene (GN) as carrier, Medlar blue (MB) as mediator, Nafion (NF) immobilized glycerol kinase (GK) and glycerol-3-phosphate oxidase (GPO) Preparation of anode catalytic electrode, and Pt / C as a cathode catalyst. The results showed that glycerol biofuel cell based on NF / GN / MB enzyme modified carbon paper electrode had good discharge performance, the open circuit potential reached 0.77 V and the maximum power density was 42.05 μW / cm2 at 0.42 V. In the paper, the assembly and working conditions of this enzyme biofuel cell were optimized, and its performance was evaluated by polarization curve method and AC impedance method. The enzyme biofuel cell will handle glycerol by-product of biodiesel, providing a clean and reliable way to recycle energy.