Electrochemical reduction of oxygen with iron phthalocyanine in neutral media

Bioelectrochemical systems (BESs) are emerging technologies which use microorganisms to catalyze the reactions at the anode and/or cathode. BES research is advancing rapidly, and a whole range of applications using different electron donors and acceptors has already been developed. In this mini review, we focus on technological aspects of the expanding application of BESs. We will analyze the anode and cathode half-reactions in terms of their standard and actual potential and report the overpotentials of these half-reactions by comparing the reported potentials with their theoretical potentials. When combining anodes with cathodes in a BES, new bottlenecks and opportunities arise. For application of BESs, it is crucial to lower the internal energy losses and increase productivity at the same time. Membranes are a crucial element to obtain high efficiencies and pure products but increase the internal resistance of BESs. The comparison between production of fuels and chemicals in BESs and in present production processes should gain more attention in future BES research. By making this comparison, it will become clear if the scope of BESs can and should be further developed into the field of biorefineries.

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“…When a current is flowing, the cathode potential usually shows a steep drop, and overpotentials increase even further (e.g., (Yu et al 2009)). …”

Section: Overpotentials For Oxygen Reductionmentioning

confidence: 99%

“…Metal catalysts other than platinum that have been examined are for example Fe(II) and Co-based catalysts (Lefebvre et al 2009;Yu et al 2009). Recently, more and more attention is paid to the development of biological catalysts on the cathode.…”

Section: Overpotentials For Oxygen Reductionmentioning

confidence: 99%

New applications and performance of bioelectrochemical systems

Hamelers

Heijne

Sleutels

et al. 2009

Appl Microbiol Biotechnol

255

134

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“…Although it is consensus among researchers that the high cost of platinum prohibits its economic use as oxygen reduction catalyst in microbial fuel cells, platinum electrodes often serve as the benchmark in microbial fuel cells, against which other oxygen reduction catalysts can be compared (Birry et al 2011;Harnisch et al 2009b;Yu et al 2009). However, it should be noted that platinum is far from being the optimal catalyst for oxygen reduction under the typical operation conditions of a microbial fuel cell.…”

Section: Electrocatalysts For Oxygen Reductionmentioning

confidence: 99%

Dissimilatory Metal Reducers Producing Electricity: Microbial Fuel Cells

Kerzenmacher

2012

Microbial Metal Respiration

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This chapter provides an introduction to the application of dissimilatory metal reducers in microbial fuel cells. In this type of fuel cells, exoelectrogenic bacteria act as anodic electrode catalysts and enable the direct generation of electricity from e.g., waste waters and other organic carbon sources. The chapter covers the basic thermodynamic principles of electrochemical energy conversion and the interrelations between cell voltage, power density, and efficiencies. Furthermore, important aspects of fuel cell construction are discussed, including reactor design as well as suitable anode materials and catalysts for cathodic oxygen reduction. Special importance is given to fuel cell characterization techniques that allow researchers to evaluate the power output of a microbial fuel cell and distinguish the different loss mechanisms that govern its performance. The chapter closes with a comparison of typical application examples and a perspective on future challenges and trends in the field of microbial fuel cells, also regarding emerging applications beyond electricity generation.

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“…The most frequently studied metallomacrocycles are Fe and Co phthalocyanines because it has been reported that these metal phthalocyanines have the ability to promote the 4e − reduction of oxygen to water without the formation of peroxide intermediates [7,19,36]. There are numerous reports on the electrocatalytic properties of carbon materials modified with Co and Fe phthalocyanines and porphyrins and there is a continuously growing research activity in this area [37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Electrocatalysis of oxygen reduction on multi-walled carbon nanotube supported copper and manganese phthalocyanines in alkaline media

Kaare

Kruusenberg

Merisalu

et al. 2015

J Solid State Electrochem

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Manganese phthalocyanine (MnPc) and copper phthalocyanine (CuPc)-modified electrodes were prepared using multi-walled carbon nanotubes (MWCNTs) as a support material. The catalyst materials were heat treated at four different temperatures to investigate the effect of pyrolysis on the oxygen reduction reaction (ORR) activity of these electrocatalysts. The MWCNT to metal phthalocyanine ratio was varied. Scanning electron microscopy (SEM) was employed to visualise the surface morphology of the electrodes and the x-ray photoelectron spectroscopic (XPS) study was carried out to analyse the surface composition of the most active catalyst materials. The ORR was studied in 0.1 M KOH solution employing the rotating disk electrode (RDE) method. Glassy carbon (GC) electrodes were modified with carbon nanotube-supported metal phthalocyanine catalysts using Tokuyama AS-4 ionomer. The RDE results revealed that the highest electrocatalytic activity for ORR was achieved upon heat treatment at 800°C. CuPc-derived catalyst demonstrated lower catalytic activity as compared to the MnPc-derived counterpart, which is in good agreement with previous literature, whereas the activity of MnPc-based catalyst was higher than that reported earlier.

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Electrochemical reduction of oxygen with iron phthalocyanine in neutral media

Cited by 85 publications

References 41 publications

New applications and performance of bioelectrochemical systems

New applications and performance of bioelectrochemical systems

Dissimilatory Metal Reducers Producing Electricity: Microbial Fuel Cells

Electrocatalysis of oxygen reduction on multi-walled carbon nanotube supported copper and manganese phthalocyanines in alkaline media

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