Highly dispersed polydopamine-modified Mo2C/MoO2 nanoparticles as anode electrocatalyst for microbial fuel cells

被引：25
|
作者：
Zeng, Lizhen [1 ]
Chen, Xiaofen [2 ]
Li, Hongying [2 ]
Xiong, Juan [2 ]
Hu, Meihua [2 ]
Li, Xin [2 ]
Li, Weishan [2 ]
机构：
[1] South China Normal Univ, Anal & Testing Ctr, Guangzhou 510006, Guangdong, Peoples R China
[2] South China Normal Univ, Sch Chem & Environm, Guangzhou 510006, Guangdong, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2018年 / 283卷
基金：
中国国家自然科学基金;
关键词：
Mo2C/MoO2; Polydopamine modification; Electrocatalytic activity; Hydrophilicity; Microbial fuel cells; N-DOPED CARBON; SULFURIC-ACID-SOLUTION; LITHIUM-ION BATTERIES; HIGH-PERFORMANCE; ESCHERICHIA-COLI; METHANOL OXIDATION; KLEBSIELLA-PNEUMONIAE; ELECTRON-TRANSFER; TUNGSTEN CARBIDE; CATALYST;
D O I：
10.1016/j.electacta.2018.06.192
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A novel composite, polydopamine-modified Mo2C/MoO2 nanoparticles (HD-Mo2C/MoO2), as anode electrocatalyst for microbial fuel cells (MFCs), is synthesized via carbon thermal reduction and following in situ polydopamine modification. The physical and electrochemical characterizations show that Mo2C/ MoO2 nanoparticles can be well dispersed through polydopamine modification and the resulting HD-Mo2C/MoO2 exhibits excellent electrocatalytic activity compared with unmodified Mo2C/MoO2. The MFC using HD-Mo2C/MoO2 as anode electrocatalyst achieves a maximum output power density of 1.64 +/- 0.09 Wm(-2), which is 39% higher than that using Mo2C/MoO2 (1.18 +/- 0.08 Wm(-2)) as anode electrocatalyst. This excellent performance is attributed to modification of PDA, HD-Mo2C/MoO2 shows better hydrophilicity and electrocatalytic activity toward the direct oxidation of bacterial metabolites than unmodified Mo2C/MoO2. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：528 / 537
页数：10
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