海洋科学2025，Vol.49Issue(6)：37-47,11.DOI:10.11759/hykx20250315001
生物合成FeS纳米颗粒加速海洋硫酸盐还原菌Desulfovibrio bizertensis SY-1胞外电子传递研究
Study on the accelerating extracellular electron transfer in marine sulfate-reducing bacterium Desulfovibrio bizertensis SY-1 by biosynthesis of FeS
摘要
Abstract
In order to reveal the regulation mechanism of biosynthesized FeS(Bio-FeS)on the extracellular electron transfer(EET)of the marine sulfate-reducing bacterium Desulfovibrio bizertensis SY-1(D.bizertensis SY-1),the addition of 20 mg/L,40 mg/L,60 mg/L,80 mg/L,and 100 mg/L Bio-FeS to the D.bizertensis SY-1 system with 20 mg/L,40 mg/L,60 mg/L,80 mg/L and 100 mg/L of Bio-FeS was analyzed and tested by chronoamperometry(I-t),electrochemical impedance spectroscopy(EIS),differential pulse voltammetry(DPV)and cyclic voltammetry(CV).The results showed that the bioelectrical current was significantly enhanced by the addition of Bio-FeS,and Bio-FeS promoted the synthesis of D.bizertensis SY-1 cytochrome c and thus enhanced the redox activity,and also enhanced the electrode interfacial charge storage capacity,lowered the intra-system charge transfer resistance and solution resistance,and increased the EET efficiency of D.bizertensis SY-1.electron transfer efficiency.This study provides new ideas for microbial corrosion protection in marine engineering and the design of electron mediators for microbial fuel cells(MFCs).关键词
硫酸盐还原菌/胞外电子传递/计时电流法/脉冲伏安法/循环伏安法Key words
sulfate-reducing bacteria/extracellular electron transfer/I-t/DPV/CV分类
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杨金峰,王亚楠,段继周..生物合成FeS纳米颗粒加速海洋硫酸盐还原菌Desulfovibrio bizertensis SY-1胞外电子传递研究[J].海洋科学,2025,49(6):37-47,11.基金项目
国家自然科学基金(42076044 （）
42206126)National Natural Science Foundation of China,Nos.42076044,42206126 （）
