沉积物微生物燃料电池(sedimentmicrobialfuelcells,SM FC s),是一种基于沉积物环境体系,利用其中微生物的催化作用,将有机物中的化学能直接转变为电能的装置。首先介绍了SM FC s的工作原理,突出了微生物的作用。接着从电极本身和环境...沉积物微生物燃料电池(sedimentmicrobialfuelcells,SM FC s),是一种基于沉积物环境体系,利用其中微生物的催化作用,将有机物中的化学能直接转变为电能的装置。首先介绍了SM FC s的工作原理,突出了微生物的作用。接着从电极本身和环境两方面综述了SM FC s的性能制约因素及改进措施,前者包括电极材料、电极设计、外加动力控制、外加电路控制等,后者包括有机物的供应、氧浓度、温度、电导率等。最后介绍了SM FC s在传感器供电方面的应用实例。展开更多
Reduced graphene sheets (RGSs) mediate electron transfer between sulfate-reducing bacteria (SRB) and solid electrodes, and promote the development of microbial fuel cells (MFC). We have investigated RSG-promoted elect...Reduced graphene sheets (RGSs) mediate electron transfer between sulfate-reducing bacteria (SRB) and solid electrodes, and promote the development of microbial fuel cells (MFC). We have investigated RSG-promoted electron transfer between SRB and a glassy carbon (GC) electrode. The RGSs were produced at high yield by a chemical sequence involving graphite oxidation, ultrasonic exfoliation of nanosheets, and N2H4 reduction. Cyclic voltammetric testing showed that the characteristic anodic peaks (around 0.3 V) might arise from the combination of bacterial membrane surface cytochrome c3 and the metabolic products of SRB. After 6 d, another anodic wave gradually increased to a maximum current peak and a third anodic signal became visible at around 0 V. The enhancements of two characteristic anodic peaks suggest that RSGs mediate electron-transfer kinetics between bacteria and the solid electrode. Manipulation of these recently-discovered electron-transport mechanisms will lead to significant advances in MFC engineering.展开更多
文摘沉积物微生物燃料电池(sedimentmicrobialfuelcells,SM FC s),是一种基于沉积物环境体系,利用其中微生物的催化作用,将有机物中的化学能直接转变为电能的装置。首先介绍了SM FC s的工作原理,突出了微生物的作用。接着从电极本身和环境两方面综述了SM FC s的性能制约因素及改进措施,前者包括电极材料、电极设计、外加动力控制、外加电路控制等,后者包括有机物的供应、氧浓度、温度、电导率等。最后介绍了SM FC s在传感器供电方面的应用实例。
基金supported by the NSFC (51522206, 11574151, 11774173 and 51790492)the fundamental research funds for the central universities (30915011203, 30918011334, 30919011403 and 30920021152)
基金Supported by the National Natural Science Foundation of China (No.41076047)the Shandong Provincial Natural Science Foundation of China (No. ZR2010DM004)the Chinese Academy of Sciences (No. KZCX2-YW-205-03)
文摘Reduced graphene sheets (RGSs) mediate electron transfer between sulfate-reducing bacteria (SRB) and solid electrodes, and promote the development of microbial fuel cells (MFC). We have investigated RSG-promoted electron transfer between SRB and a glassy carbon (GC) electrode. The RGSs were produced at high yield by a chemical sequence involving graphite oxidation, ultrasonic exfoliation of nanosheets, and N2H4 reduction. Cyclic voltammetric testing showed that the characteristic anodic peaks (around 0.3 V) might arise from the combination of bacterial membrane surface cytochrome c3 and the metabolic products of SRB. After 6 d, another anodic wave gradually increased to a maximum current peak and a third anodic signal became visible at around 0 V. The enhancements of two characteristic anodic peaks suggest that RSGs mediate electron-transfer kinetics between bacteria and the solid electrode. Manipulation of these recently-discovered electron-transport mechanisms will lead to significant advances in MFC engineering.
基金supported by the Ministry of Science and Technology of the People’s Republic of China (2022YFA1402901)the National Natural Science Foundation of China (NSFC, T2125004, 12274227, and 12004183)+2 种基金the Fundamental Research Funds for the Central Universities (30921011214)the Funding of Nanjing University of Science & Technology (TSXK2022D002)support from the Tianjing Supercomputer Centre。
