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在微生物燃料电池中通过N,S编的碳微花阳极增强微生物的附着和黄素的分泌
Xusen Cheng1, Bo Liu2, Yunfeng Qiu3
1Key Laboratory of Forest Plant Ecology, Ministry of Education, Engineering Research Center of Forest Bio-Preparation, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040 PR China.
Journal of colloid and interface science
|June 10, 2023
概括
研究人员在碳布上开发了N,S-编的碳微花 (N,S-CMF@CC),以改进微生物燃料电池 (MFC). 这种新型阳极增强了外电素丰富和细胞外电子转移 (EET) 以获得更好的发电和废水处理.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 环境科学 环境科学
背景情况:
- 微生物燃料电池 (MFC) 面临传统纳米材料阳极的局限性,这阻碍了微生物的宿舍和电子转移.
- 高效的细胞外电子转移 (EET) 对MFC性能至关重要,影响发电和污染物降解.
研究的目的:
- 为MFCs设计一种新的层次性阳极材料,支持外电素丰富并加速EET.
- 通过改进阳极设计,提高MFC的功率输出和废水处理效率.
主要方法:
- 在碳布 (N,S-CMF@CC) 上合成N,S-codoped碳微花,使用SnS2纳米片作为牺牲模板.
- 电化学性质的表征,包括电荷容量,接口传输电阻和扩散系数.
- 使用光监测和16S rRNA基因测序,分析微生物生物膜的形成,外电素丰富和黄素分泌.
主要成果:
- 与裸体碳布相比,N,S-CMF@CC阳极的累积电荷 (2.11x) 显著更高,接口传输阻力更低.
- 在N,S-CMF@CC阳极上观察到增强的外电素丰富和纳米导体生成.
- 使用N,S-CMF@CC的MFC实现了2.50W/m2的功率密度,22.77%的库伦比效率和90.72 mg/L/d的COD去除,其性能优于光CC.
结论:
- N,S-CMF@CC等级电极有效地解决了MFC中的细胞丰富问题.
- 通过在N,S-CMF@CC阳极上的黄素分泌促进的增强EET可以促进MFC发电和废水处理.
- 这项研究提出了一个有前途的阳极材料,用于推进MFC技术在可持续能源和环境修复.
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