Nitrogen and phosphorus dual-doped carbon derived from chitosan: An excellent cathode catalyst in microbial fuel cell

被引:88
作者
Liang, Bolong [1 ,2 ]
Li, Kexun [1 ,2 ]
Liu, Yi [1 ,2 ]
Kang, Xiaowen [3 ]
机构
[1] Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China
[2] Nankai Univ, Tianjin Key Lab Environm Remediat Pollut Control, MOE Key Lab Pollut Proc & Environm Criteria, Tianjin 300071, Peoples R China
[3] CAMR, NDRC, ERI, Beijing 100824, Peoples R China
基金
国家重点研发计划;
关键词
Microbial fuel cell; Carbonization; Phosphorylation; Oxygen reduction reaction; OXYGEN-REDUCTION REACTION; HIGH-SURFACE-AREA; METAL-FREE ELECTROCATALYST; ACTIVATED CARBON; AIR-CATHODE; HIGH-PERFORMANCE; GRAPHENE OXIDE; MECHANISM; SUPERCAPACITOR; WATER;
D O I
10.1016/j.cej.2018.09.217
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Carbon derived from chitosan, followed by phosphoric acid activation during thermal treatment to obtain N and P dual-doped catalyst, is studied as the catalyst for air-cathode in a microbial fuel cell (MFC). The maximum power density (MPD) of 1603.6 +/- 80 mW m(-2) is achieved, which is 5 times as high as that of the control (322.4 +/- 16 mW m(-2)) when N, P-codoped carbon was calcined at 850 degrees C. The better performance is due to a higher open circuit potential, lower total resistance and higher exchange current density. In addition, the optimized catalyst possessed the largest specific surface area of 982.18 m(2) g(-1), so it could transfer more oxygen and supplied added active sites. And the existence of graphitic nitrogen, phosphorus and high content of carbon oxygen bonds promoted the cathode performance in MFC. In brief, the N and P dual-doped carbon from chitosan was potentially low-cost catalyst for the high performance of MFC.
引用
收藏
页码:1002 / 1011
页数:10
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