摘要
将桉树叶提取液绿色还原氧化石墨烯(G-rGO)电极和微生物还原氧化石墨烯(B-rGO)电极依次作为微生物燃料电池(MFC)阳极,采用红外光谱(FTIR)、X射线衍射(XRD)、扫描电镜(SEM)对所制备的电极进行表征,并采用循环伏安法(CV)、交流阻抗法(EIS)对比2种电极的电化学性能.结果发现,G-rGO阳极的内阻为243.87Ω,应用于MFC时最大功率密度和最大输出电压分别为18.77 W·m^(-3)和760 mV,对照组B-rGO电极的内阻为299.11Ω,将其应用于MFC时最大功率密度和最大输出电压分别为13.16 W·m^(-3)和635 mV,对照组未修饰阳极的内阻为375.21Ω,最大功率密度和最大输出电压分别为8.97 W·m^(-3)和480 mV.研究表明,G-rGO电极电阻更小,导电性能更优越.
Green-reduced graphene oxide（G-rGO） film electrode and bio-reduced graphene oxide（B-rGO） film electrode are used as anodes in microbial fuel cells（MFCs） to examine their performance in electricity generation.The anodes were characterized by fourier transform infrared spectroscopy（FTIR）,X-ray diffraction（XRD） and scanning electron microscope（SEM）.Furthermore,the electrochemical techniques such as cyclic voltammetry（CV） and electrochemical impedance spectroscopy（EIS） were applied to explore the electrochemical performance.The internal resistances of G-rGO group was 243.87 Ω with the maximum power densities and output voltage at 18.77 W·m-3 and 760 mV,respectively.However,the internal resistances of unmodified group and B-rGO group were larger at 375.21 Ω and 299.11 Ω.Besides,lower power density and output voltage were shown at 8.97 W·m-3 and 480 mV for control group and 13.16 W·m-3 and 635 mV for B-rGO group.Above all,it demonstrates that G-rGO film anodes performed better and can be applied as anode materials in MFC to accelerate electricity generation.
出处
《环境科学学报》
CAS
CSCD
北大核心
2017年第8期2944-2950,共7页
Acta Scientiae Circumstantiae
基金
福建省自然科学基金(No.2016J01048)~~
