Publications related to Polarography

Electrochemical sensors modified with iron oxide nanoparticles/ nanocomposites for voltammetric detection of Pb (II) in water: A review

Permissible limits of Pb 2+ in drinking water are being reduced from 10 mu gL -1 to 5 mu gL -1 , which calls for rapid, and highly reliable detection techniques. Electrochemical sensors have garnered attention in detection of heavy metal ions in environmen ...

Cell Press2024

Measuring electro-adhesion pressure before and after contact

Herbert Shea, Sylvain Thomas Schaller

Electro-adhesion (EA) is a low-power, tunable, fast and reversible electrically-controlled adhesion method, effective on both conducting and insulating objects. Typically, only the electro-adhesive detachment force, i.e., the force required to separate an ...

Nature Portfolio2023

In-flow electrochemical detection of chemicals in droplets with pyrolysed photoresist electrodes: application as a module for quantification of microsampled dopamine

Philippe Renaud, Arnaud Bertsch, Joan Teixidor, Albert René Yvon Leroy

The electrochemical quantification of analytes in droplets of PBS separated by a fluorinated phase was investigated. PDMS-fused silica chips with pyrolysed photoresist electrodes were prepared using a simple fabrication technique and used to analyze drople ...

ROYAL SOC CHEMISTRY2021

Synergistic Cu/CeO2 carbon nanofiber catalysts for efficient CO2 electroreduction

Andreas Züttel, Wen Luo, Jie Zhang

The electrochemical reduction of carbon dioxide (CO2RR) has attracted enormous interest because of the energy crisis and climate change; however, more efficient catalysts are required for practical applications. Herein, we present electrospinning as a faci ...

Elsevier2020

Montmorillonite clay-modified disposable ink-jet-printed graphene electrode as a sensitive voltammetric sensor for the determination of cadmium(II) and lead(II)

Hubert Girault, Andreas Stephan Lesch, Milica Jovic, Victor Costa Bassetto, Léopoldine Guenang Sonfack

This work describes a new sensitive sensor for the simultaneous electrochemical determination by square wave anodic stripping voltammetry of Cd2+ and Pb2+ ions in aqueous solution, based on a disposable ink-jet-printed graphene electrode (IPGE) modifed by ...

2020

Vanadium‐manganese redox flow battery: Study of Mn(III) disproportionation in the presence of other metallic ions

Hubert Girault, Pekka Eero Peljo, Sunny Isaïe Maye, Danick Reynard, Solène Cindy Gentil, Vimanshu Chanda

The Mn(III)/Mn(II) redox couple with a standard potential of +1.51 V vs . SHE has drawn interest for the design of V/Mn redox flow battery (RFB). However, Mn(III) disproportionation leads to a loss of capacity, an increase of pressure drop and electrode pa ...

Wiley2020

Highly Loaded Mildly Edge‐Oxidized Graphene Nanosheet Dispersions for Large‐Scale Inkjet Printing of Electrochemical Sensors

Hubert Girault, Horst Pick, Andreas Stephan Lesch, Milica Jovic, Victor Costa Bassetto, Yingdi Zhu, Bhawna Nagar

Inkjet printing of electrochemical sensors using a highly loaded mildly edge‐oxidized graphene nanosheet (EOGN) ink is presented. An ink with 30 mg/mL EOGNs is formulated in a mixture of N‐methyl pyrrolidone and propylene glycol with only 30 min of sonicat ...

2020

New Measurement Method in Drug Sensing by Direct Total-Charge Detection in Voltammetry

Sandro Carrara, Danilo Demarchi, Simone Aiassa, José David González Martínez

Electrochemical biosensors are promoting point-of-care and wearable instrumentation due to their high versatility in measuring human metabolites. There is a considerable number of biological compounds that can be detected and measured through voltammetry b ...

IEEE2020

Supplementary Material for "Optimized Sampling Rate for Voltammetry-Based Electrochemical Sensing in Wearable and IoT Applications"

Sandro Carrara, Danilo Demarchi, Simone Aiassa

The Voltammetry-Based Sensing (VBS) methods are extremely interesting due to high specificity in several biochemical applications. Several considerations can be applied to use this method to measure different analytes, and implement efficient and optimized ...

2019

Spectro-electrochemical toolbox for monitoring and controlling quinone-mediated redox-driven molecular gripping

Jovana Milic, Thomas Schneeberger

The control of molecular systems by electrical charge or light is a prerequisite for their application in nanoelectronics. Such potential has been uniquely exploited in quinone-based resorcin[4]arene cavitands that can act as molecular grippers, reversibly ...

2019

Sequential catalysis enables enhanced C-C coupling towards multi-carbon alkenes and alcohols in carbon dioxide reduction: a study on bifunctional Cu/Au electrocatalysts

Michael Graetzel, Shaik Mohammed Zakeeruddin, Dan Ren, Jing Gao

Electrochemical reduction of carbon dioxide (CO2) to multi-carbon products such as ethylene, ethanol and n-propanol offers a promising path for utilization of excessive CO2 and energy storage. Oxide-derived Cu electrodes are among the best electrocatalysts ...

ROYAL SOC CHEMISTRY2019

Potential-induced nanoclustering of metallic catalysts during electrochemical CO2 reduction

Nicola Marzari, Raffaella Buonsanti, Emad Oveisi, Oliviero Andreussi, Anna Loiudice, Jianfeng Huang, Nicolas Georg Hörmann, Gian Luca De Gregorio

In catalysis science stability is as crucial as activity and selectivity. Understanding the degradation pathways occurring during operation and developing mitigation strategies will eventually improve catalyst design, thus facilitating the translation of b ...

Nature Research2018

Enhanced Sensing of Interleukin 8 by Stripping Voltammetry: Carbon Nanotubes versus Fullerene

Sandro Carrara, Tugba Kilic, Sarah Tonello

The ability to detect protein biomarkers at a subnanomolar level represents a pervasive challenge in order to bring a significant improvement in early diagnosis or progression of pato-physiological processes. To this aim, Screen Printed Electrochemical Sen ...

SPRINGER-VERLAG SINGAPORE PTE LTD2018

Semi-analytical modelling of linear scan voltammetric responses for soluble-insoluble system: The case of metal deposition

Hubert Girault, Imene Atek, Pekka Eero Peljo, Sunny Isaïe Maye

The absence of general theoretical models describing linear sweep voltammetry (LSV) or cyclic voltammetry (CV) responses for soluble-insoluble systems such as one-step electrodeposition reactions under quasi-reversible condition makes it difficult to extra ...

2018

A novel psychoanalytical approach: An electrochemical ligand-binding assay to screen antipsychotics

Sandro Carrara, Tugba Kilic

Schizophrenia treatment may see a paradigm shift due to development of new atypical antipsychotic drugs (APDs), with better tolerability due to more selective dopamine (DA) receptor blockade. Monitoring of these APD candidates in biological fluids is of gr ...

2018

Cleaning strategy for carbon-based electrodes: Long-term propofol monitoring in human serum

Giovanni De Micheli, Giovanni Boero, Francesca Stradolini, Irene Taurino, Tugba Kilic

In this work, we present a novel electrochemical cleaning procedure for long-term electrochemical monitoring of propofol by using boron-doped diamond (BDD) and pencil graphite electrode (PGE). Propofol is an anesthetic that is widely used for long-lasting ...

2018

Microengineered Electrochemical Tools for in-situ Monitoring of Marine Environment

Marianna Fighera

Measuring the concentration of different compounds in aquatic ecosystem and understanding their impact on the environment are some of the main objectives in the environmental monitoring field. Trace metals, nutrients, volatile organic compounds (VOCs), bio ...

EPFL2017

Anomalous Nernst effect in Ir22Mn78/Co20Fe60B20/MgO layers with perpendicular magnetic anisotropy

Jean-Philippe Ansermet, Haiming Yu, Sa Tu, Junfeng Hu, Jianyu Zhang, Yao Zhang, Xiangrong Wang

The anomalous Nernst effect in a perpendicularly magnetized Ir22Mn78/Co20Fe60B20/MgO thin film is measured using well-defined in-plane temperature gradients. The anomalous Nernst coefficient reaches 1.8 mu V/K at room temperature, which is almost 50 times ...

American Institute of Physics2017

New Insights Into the Role of Imidazolium-Based Promoters for the Electroreduction of CO2 on a Silver Electrode

Michael Graetzel, Paul Joseph Dyson, Rosario Scopelliti, Marcel Roland Schreier, Dmitry Vasilyev, Pui Shan Genevieve Lau

The electrochemical reduction of CO2 to CO is a reaction of central importance for sustainable energy conversion and storage. Herein, structure activity relationships of a series of imidazolium-based cocatalysts for this reaction are described, which demon ...

Amer Chemical Soc2016

Bubble electrodeposition of gold porous nanocorals for the enzymatic and non-enzymatic detection of glucose

Sandro Carrara, Irene Taurino

Au nanocorals are grown on gold screen-printed electrodes (SPEs) by using a novel and simple one-step electro-deposition process. Scanning electron microscopy was used for the morphological characterization. The devices were assembled on a three-electrode ...

Elsevier2016