An excellent alternative composite modifier for cathode catalysts prepared from bacterial cellulose doped with Cu and P and its utilization in microbial fuel cell

• Published in: Bioresource technology Vol. 289; p. 121661
• Main Authors: Li, Huiyu, Ma, Hongzhi, Liu, Ting, Ni, Jin, Wang, Qunhui
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.10.2019
• Subjects: Bacterial cellulose; Bioelectricity production; Biomass resource; Microbial fuel cell; P-Cu doping; Microbial fuel cell; Bacterial cellulose; Biomass resource; P-Cu doping; Bioelectricity production
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2019.121661

[Display omitted] •Bacterial cellulose used as catalyst precursors of the MFC cathode better than platinum.•Doping P and Cu via freeze-drying and high-temperature pyrolysis constructed more active sites.•Mass-transfer rate of the electrode in MFC calculated via electrochemical method. In this study, bacterial cellulose doped with phosphorus and copper via freeze-drying and high-temperature pyrolysis was used to prepare MFC cathode catalysts. After a series of characterization, the synthesized catalyst showed a three-dimensional network with a specific surface area of 580.09 m2/g. Due to the doping of Cu and P, more active sites were induced in the pores of bacterial cellulose and subsequently improved catalytic activity. The prepared catalyst was coated on the air cathode surface of the MFC to obtain the maximum output power and current density of 1177.31 mW/m2 and 6.73 A/m2, respectively, which were higher than those of Pt (1044.93 mW/m2 and 6.02 A/m2). This work aimed to improve bioelectrical generation in MFC and find alternative commercial Pt catalysts.