基于三維石墨烯的甘油酶生物燃料電池的構(gòu)建及其性能研究
發(fā)布時間:2018-10-23 10:35
【摘要】:本文采用修正的Hurnmers方法制備了氧化石墨,通過超聲波剝離得到氧化石墨烯溶液,用水熱法進(jìn)行還原,制得三維石墨烯。結(jié)果表明,制備的三維石墨烯材料具有多孔結(jié)構(gòu),且還原后某些含氧基團(tuán)消失。所構(gòu)建的酶生物燃料電池以三維石墨烯(GN)為載體,以麥爾多拉藍(lán)(MB)為導(dǎo)電介體,用Nafion(NF)固定甘油激酶(GK)和甘油-3-磷酸氧化酶(GPO)制備陽極催化電極,并以Pt/C作為陰極催化劑。結(jié)果顯示,基于NF/GN/MB酶修飾碳紙電極的甘油酶生物燃料電池具有良好的放電性能,開路電位達(dá)到0.77 V,并在0.42 V取得最大功率密度42.05μW/cm2。論文中對該酶生物燃料電池的組裝、工作條件等進(jìn)行了優(yōu)化,用極化曲線法和交流阻抗法對其性能進(jìn)行了評價。該酶生物燃料電池將為生物柴油副產(chǎn)物甘油的處理,提供一種清潔可靠的能源再利用方式。
[Abstract]:Graphite oxide was prepared by modified Hurnmers method. The solution of graphene oxide was obtained by ultrasonic stripping, and the three-dimensional graphene was prepared by hydrothermal reduction. The results show that the three dimensional graphene materials have porous structure and some oxygen groups disappear after reduction. Three dimensional graphene (GN) was used as the carrier of the constructed enzyme biofuel cell, and Mel Dora blue (MB) was used as the conductive medium. The anodic catalytic electrode was prepared by immobilization of glycerol kinase (GK) and glycerol 3-phosphate oxidase (GPO) with Nafion (NF). Pt/C was used as cathode catalyst. The results show that the glycerase biofuel cell modified with NF/GN/MB enzyme has good discharge performance, with an open circuit potential of 0.77V and a maximum power density of 42.05 渭 W / cm ~ 2 at 0.42 V. In this paper, the assembly and working conditions of the enzyme biofuel cell were optimized, and its performance was evaluated by polarization curve method and AC impedance method. The enzyme biofuel cell will provide a clean and reliable way of energy reuse for the treatment of glycerol, a byproduct of biodiesel.
【作者單位】: 華南理工大學(xué)食品科學(xué)與工程學(xué)院;華南理工大學(xué)化學(xué)與化工學(xué)院;
【基金】:國家自然科學(xué)基金項(xiàng)目(21576101、21476087、21676106) 十三五國家重點(diǎn)研發(fā)計(jì)劃子課題(2016YFB0101200、2016YFB0101204) 中央高校基本科研業(yè)務(wù)費(fèi)
【分類號】:TM911.45
[Abstract]:Graphite oxide was prepared by modified Hurnmers method. The solution of graphene oxide was obtained by ultrasonic stripping, and the three-dimensional graphene was prepared by hydrothermal reduction. The results show that the three dimensional graphene materials have porous structure and some oxygen groups disappear after reduction. Three dimensional graphene (GN) was used as the carrier of the constructed enzyme biofuel cell, and Mel Dora blue (MB) was used as the conductive medium. The anodic catalytic electrode was prepared by immobilization of glycerol kinase (GK) and glycerol 3-phosphate oxidase (GPO) with Nafion (NF). Pt/C was used as cathode catalyst. The results show that the glycerase biofuel cell modified with NF/GN/MB enzyme has good discharge performance, with an open circuit potential of 0.77V and a maximum power density of 42.05 渭 W / cm ~ 2 at 0.42 V. In this paper, the assembly and working conditions of the enzyme biofuel cell were optimized, and its performance was evaluated by polarization curve method and AC impedance method. The enzyme biofuel cell will provide a clean and reliable way of energy reuse for the treatment of glycerol, a byproduct of biodiesel.
【作者單位】: 華南理工大學(xué)食品科學(xué)與工程學(xué)院;華南理工大學(xué)化學(xué)與化工學(xué)院;
【基金】:國家自然科學(xué)基金項(xiàng)目(21576101、21476087、21676106) 十三五國家重點(diǎn)研發(fā)計(jì)劃子課題(2016YFB0101200、2016YFB0101204) 中央高校基本科研業(yè)務(wù)費(fèi)
【分類號】:TM911.45
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