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Jean-Marie Fontmorin

Bio: Jean-Marie Fontmorin is an academic researcher from Newcastle University. The author has contributed to research in topics: Microbial fuel cell & Microbial electrosynthesis. The author has an hindex of 13, co-authored 28 publications receiving 569 citations. Previous affiliations of Jean-Marie Fontmorin include École Normale Supérieure & University of Rennes.

Papers
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TL;DR: A theoretical kinetics model was developed to determine conditions under which the spin-adduct DMPO-OH is not further oxidized by Fe(3+) and excessive radicals, so that hydroxyl radicals concentration could be accurately inferred.

198 citations

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TL;DR: In this article, the relevance of an electrochemical pre-treatment of 2,4-D prior to a biological process with the aim of increasing the biodegradability of a 2, 4-D effluent was examined.

72 citations

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TL;DR: In this paper, a steady state, two dimensional mathematical model of microbial fuel cells (MFCs) developed by coupling mass, charge and energy balance with the bioelectrochemical reactions is presented.

65 citations

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TL;DR: In this article, a coupled process was studied for the removal of a chlorinated pesticide: 2,4-Dichlorophenoxyacetic acid (2,4D), which was used as a target compound for the study.

62 citations

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TL;DR: In this paper, the morphology, elemental mapping, phase identification, surface characteristics and electrochemical performance of oxide-derived (OD) and Pb-Sb composite electrocatalysts were probed systematically.
Abstract: Oxide-derived (OD) Sn and Sn−Pb−Sb composite electrocatalysts were prepared by electrochemical oxidation treatment at various potentials for electrochemical reduction of CO2 (eCO2R) for formate (HCOO−) production. The morphology, elemental mapping, phase identification, surface characteristics and electrochemical performance of the electrocatalysts were probed systematically. The surface of OD-Sn and OD-Sn-Pb-Sb shows polycrystalline electrodes with porous morphology and XPS results confirm the formation of composite metal/metal oxide surface related to Sn, Pb and Sb. The EDX mapping analysis shows two distant regions of Pb and Sn rich areas in the alloy. The electrochemical results demonstrate that pristine Sn electrodes show higher CO2 Faradaic Efficiency (FE) to formate compared to pristine Sn-Pb-Sb alloy electrode (80% vs. 66%) at −1.4 V vs. RHE. Upon oxidation treatment of pristine Sn at 4 V, the FEHCOO− improves to 84% at the expense of decreased current density. On the contrary, upon oxidation treatment of Sn-Pb-Sb alloy at 5 V, the FEHCOO− improved remarkably from 68% to 91% without any reduction in current density. The improved eCO2R performance of OD-Sn and OD-Sn-Pb-Sb electrodes relative to their pristine electrodes could be attributed to the presence of composite metal/metal oxide structure which leads to local geometric and electronic structural changes.

58 citations


Cited by
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TL;DR: Both microplastic fibers and particles are discharged from the WWTP to the aquatic environment, according to this study, and the retention capacity of microplastics in the studied WWTP was found to be 98.3%.

649 citations

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TL;DR: Benefit from the electron transfer mechanism, the NBC/PDS system not only has wide pH adaptation for real application, but also shows high resistance to the inorganic anions in aquatic environment.

468 citations

01 Jan 2009
TL;DR: In this paper, cyclic voltammetry (CV) of wild type (WT) and mutant G. sulfurreducens strains was used to demonstrate the use of bound extracellular electron transfer mediators by Geobacter biofilms and the distinct roles of OmcB and OmcZ.
Abstract: Geobacteracea are distinct for their ability to reduce insoluble oxidants including minerals and electrodes without apparent reliance on soluble extracellular electron transfer (ET) mediators. This property makes them important anode catalysts in new generation microbial fuel cells (MFCs) because it obviates the need to replenish ET mediators otherwise necessary to sustain power. Here we report cyclic voltammetry (CV) of biofilms of wild type (WT) and mutant G. sulfurreducens strains grown on graphite cloth anodes acting as electron acceptors with acetate as the electron donor. Our analysis indicates that WT biofilms contain a conductive network of bound ET mediators in which OmcZ (outer membrane c-type cytochrome Z) participates in homogeneous ET (through the biofilm bulk) while OmcB mediates heterogeneous ET (across the biofilm/electrode interface); that type IV pili are important in both reactions; that OmcS plays a secondary role in homogenous ET; that OmcE, important in Fe(III) oxide reduction, is not involved in either reaction; that catalytic current is limited overall by the rate of microbial uptake of acetate; that protons generated from acetate oxidation act as charge compensating ions in homogenous ET; and that homogenous ET, when accelerated by fast voltammetric scan rates, is limited by diffusion of protons within the biofilm. These results provide the first direct electrochemical evidence substantiating utilization of bound ET mediators by Geobacter biofilms and the distinct roles of OmcB and OmcZ in the extracellular ET properties of anode-reducing G. sulfurreducens.

373 citations

Journal ArticleDOI
Da Ouyang1, Yun Chen1, Jingchun Yan1, Linbo Qian1, Lu Han1, Mengfang Chen1 
TL;DR: In this article, pine needle biochar was used to activate peroxymonosulfate (PMS) for the degradation of potentially carcinogenic 1,4-dioxane.

320 citations