A novel carbon black graphite hybrid air-cathode for efficient hydrogen peroxide production in bioelectrochemical systems

被引：109

作者：

Li, Nan ^{[1
]}

An, Jingkun ^{[1
]}

Zhou, Lean ^{[2
]}

Li, Tian ^{[2
]}

Li, Junhui ^{[2
]}

Feng, Cuijuan ^{[2
]}

Wang, Xin ^{[2
]}

机构：

[1] Tianjin Univ, Sch Environm Sci & Engn, Tianjin Key Lab Indoor Air Environm Qual Control, 92 Weijin Rd, Tianjin 300072, Peoples R China

[2] Nankai Univ, Tianjin Key Lab Environm Remediat & Pollut Contro, Coll Environm Sci & Engn, MOE Key Lab Pollut Proc & Environm Criteria, 38 Tongyan Rd, Tianjin 300350, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2016年 / 306卷

基金：

中国国家自然科学基金;

关键词：

Bioelectrochemical systems; Microbial fuel cells; Hydrogen peroxide; Air-cathode; Graphite; Carbon black; MICROBIAL FUEL-CELLS; WASTE-WATER TREATMENT; ROLLING ACTIVATED CARBON; CATALYST LAYER; ELECTROCHEMICAL GENERATION; BIOFILM GROWTH; PTFE CATHODE; PERFORMANCE; H2O2; ELECTROGENERATION;

D O I：

10.1016/j.jpowsour.2015.12.078

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbon black and graphite hybrid air-cathode is proved to be effective for H2O2 production in bioelectrochemical systems. The optimal mass ratio of carbon black to graphite is 1:5 with the highest H2O2 yield of 11.9 mg L-1 h(-1) cm(-2) (123 mA cm(-2)). Continuous flow is found to improve the current efficiency due to the avoidance of H2O2 accumulation. In the biological system, the highest H2O2 yield reaches 3.29 mg L-1 h(-1) (0.079 kg m(-3) day(-1)) with a current efficiency of 72%, which is higher than the abiotic system at the same current density. H2O2 produced in this system is mainly from the oxygen diffused through this air-cathode (>66%), especially when a more negative cathode potential is applied (94% at -1.0 V). This hybrid air-cathode has advantages of high H2O2 yield, high current density and no need of aeration, which make the synthesis of H2O2 more efficient and economical. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：495 / 502

页数：8

共 27 条

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