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Waste paper derived three-dimensional carbon aerogel integrated with ceria/nitrogen-doped reduced graphene oxide as freestanding anode for high performance and durable microbial fuel cells
- Source :
- Bioprocess and Biosystems Engineering. 43:97-109
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- Despite the green energy generation with low cost compared to conventional fuel cells, microbial fuel cells (MFCs) still suffer with anode related constraints including laborious pretreatment and modification process of conventional electrodes, limited bacterial loading capacity, and inferior extracellular electron transfer efficiency. Accordingly, this investigation explores the waste tissue paper derived three dimensional (3D) carbon aerogel (CA) integrated with cerium dioxide (CeO2) nanotubes decorated nitrogen-doped reduced graphene oxide nanosheets (NRGO) as a competent anode to address these technical complements. The direct growth of NRGO and CeO2 over CA in the form of freestanding and binder-free NRGO/CeO2(1:2)/CA alleviates the significant constrains of conventional anode fabrication. The 3D hierarchical architectures of CA with open porous structure provide easy access of bacteria, thus increases the bacterial colonies per unit volume. Furthermore, the hydrogen bonding between the interfacial oxygen atoms of CeO2 and lysine residues of the cytochrome c in bacteria yields excellent extracellular electron transfer efficiency. The electrostatic interaction between the NRGO and bacteria cells improves the bacterial adhesion and biofilm formation, leading to the compact biofilm formation for the improved direct electron transference. With the profits of above, the MFC with NRGO/CeO2(1:2)/CA demonstrates a maximum power output and good lifespan performances. The present exploration facts thus access advanced avenues to converting waste matters of tissue paper, human urine, and wastewater into profitable constituents for the development of efficient and durable power producing systems.
- Subjects :
- Paper
0106 biological sciences
Materials science
Microbial fuel cell
Bioelectric Energy Sources
Nitrogen
Oxide
chemistry.chemical_element
Bioengineering
01 natural sciences
law.invention
Electron transfer
chemistry.chemical_compound
law
010608 biotechnology
Electrodes
Bacteria
010405 organic chemistry
Graphene
Biofilm
Aerogel
Cerium
General Medicine
0104 chemical sciences
Anode
chemistry
Chemical engineering
Graphite
Carbon
Biotechnology
Subjects
Details
- ISSN :
- 16157605 and 16157591
- Volume :
- 43
- Database :
- OpenAIRE
- Journal :
- Bioprocess and Biosystems Engineering
- Accession number :
- edsair.doi.dedup.....70460c72010c69ff05d8549042326907