Special Issue "Catalysts for Microbial Fuel Cells"
Deadline for manuscript submissions: 10 November 2021.
Interests: fuel cells; electrochemistry of energy conversion and storage devices; structure and transport properties in polymer electrolytes; electrocatalysis; bioelectrochemical systems
Fostering the transition towards a circular economy and sustainable development has recently been an urgent priority for governments, industry, and civil society worldwide. Scientific and technological innovation are essential to achieving the major breakthroughs in terms of energy-saving solutions, waste valorization, and the efficient integration of renewable resources. Thanks to the dual function of harvesting energy from waste and cleaning up waste from organic pollutants, microbial fuel cells (MFCs) provide a revolutionary answer to the global environmental challenges. However, several obstacles still limit the implementation of large scale MFC systems, including the high cost and poor stability of current electrodes and the complex nature of the biofilm–electrode interface. The development of low-cost, active and stable catalysts will contribute to MFC advancement, and the optimization of electrode interfaces under MFC working conditions is also of paramount importance. This Special Issue aims to collect the most recent contributions to the development of effective catalysts and electrodes for MFC, from the synthesis and characterization of platinum group metal-free electrocatalysts for oxygen reduction reactions, the optimization of catalyst layers and electrode design, the investigation of mechanisms of microbe–electrode electron transfer, and the analysis of microbial communities developed at the electrode interfaces in MFC fed with different wastewaters.
Prof. Dr. Barbara Mecheri
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- Oxygen reduction reaction
- Multi-functional catalysts for ORR, OER, and HER
- Platinum group metal-free catalysts
- Nanostructured carbon-based catalysts
- Mechanisms of microbe–electrode electron transfer
- Anodic and biocathodic microbial communities
- Anode and cathode characterization and modeling
- Cathode-promoted wastewater treatment
- Optimization of catalyst layers and electrode design
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Graphite–Metal Oxide Composites as Potential Anodic Catalysts for Microbial Fuel Cells
Authors: Elitsa Y. Chorbadzhiyska1,2, Ivo O. Bardarov1,2, Yolina V. Hubenova3,4, Mario Y. Mitov1,2
Affiliation: 1Department of Chemistry, South-West University, Blagoevgrad, Bulgaria 2Innovative Centre for Eco Energy Technologies, South-West University “Neofit Rilski”, Blagoevgrad, Bulgaria 3Department of Biochemistry and Microbiology, Plovdiv University, Plovdiv Bulgaria 4Department of Electrocatalysis and Electrocrystallization, Institute of Electrochemistry and Energy Systems “Academician Evgeni Budevski” - Bulgarian Academy of Sciences (IEES-BAS), Sofia, Bulgaria
Abstract: In this study, graphite-metal oxide (Gr-MO) composites were produced and explored as potential anodic catalysts for microbial fuel cells. Fe2O3, Fe3O4 or Mn3O4 were used as a catalyst precursor. The morphology and structure of the fabricated materials were analyzed by scanning electron microscopy and X-ray diffraction, respectively, and their corrosion resistance was examined by means of linear voltammetry. The manufactured Gr-MO electrodes were tested at applied constant potential +0.2 V (vs. Ag/AgCl) in the presence of pure culture Pseudomonas putida 1046, used as a model biocatalyst. The
obtained data showed that the applied poising resulted in a generation of anodic currents, which gradually increased during the course of the long-term experiments, indicating a formation of electroactive biofilms
on the electrode surfaces. All composite electrodes exhibited higher electrocatalytic activity compare to the non-modified graphite. The highest current density (ca. 100 mA.m-2), exceeding over 8 folds that
with graphite, was achieved with Gr-Mn3O4. The additional analyses performed by means of cyclic voltammetry and electrochemical impedance spectroscopy supported the changes in the electrochemical activity and revealed substantial differences in the mechanism of current generation processes with the use of different catalysts.