Measuring electrochemical activities of nanomaterials is critical for creating novel catalysts, for developing ultrasensitive sensors, and for understanding fundamental nanoelectrochemistry. However, traditional electrochemical methods measure a large number of nanoparticles, which wash out the properties of individual nanoparticles. We report here a study of transient electrochemical oxidation...

Owing to their extraordinary electrical, chemical, optical, mechanical and structural properties, graphene and its derivatives have stimulated exploding interests in their sensor applications ever since the first isolation of free-standing graphene sheets in year 2004. This article critically and comprehensively reviews the emerging graphene-based electrochemical sensors, electronic sensors, op...

Graphene quantum dots, GQDs, have been synthesized using two strategies: electrochemical (E) and wet chemical (W) methods. A simple, industrially up-scalable, two-electrode electrochemical setup, starting from graphite and a one-pot wet chemical synthesis, modified from reference [1] were used to produce GQDs. Filtration, centrifugation, concentration and dialysis were used to purify the obtain...

Investigation of the redox properties of drugs and their determination are performed by electrochemical techniques. Data obtained from electrochemical techniques are often correlated with molecular structure and pharmacological activity of drugs. In this regard, different modified electrodes were applied as sensors for quantification of different drugs.A nanocomposite of reduced graphene oxide-...

In the present paper, the electrochemical properties of magnetic iron oxide nanoparticles (Fe2O3 and Fe3O4) as highly sensitive sensors for the simultaneous determination of hydrazine and hydroxylamine was described. The electrochemical behavior of hydrazine and hydroxylamine was investigated using cyclic voltammetry, chronoamperometry and differentia...

Electrochemical sensors for multiple analytes were the first scitifically proposed as well as commersialised biosensors. Electrochemical biosensors have been studied for a long time. Presently, typical platform of transducers based on semiconductors and screen printed electrodes is in practice for construction of biosensors. Among all biocomponents enzymes or enzyme labeled antibodies are prese...

The implications of organically-modified silica-based materials in electrochemical science is reviewed along with some selected recent trends in the field of functionalized and sol–gel silica electrochemistry. These recent trends include the electro-assisted generation of organosilica films on solid electrode surfaces, the preparation and applications of sol–gel derived composite (carbon, gold,...

Among the techniques of detection used in clinical chemistry, optical and electrochemical methods are especially attractive. However, except for glass electrodes for pH measurement, potentiometric electrochemical sensors (ionselective electrodes) gained general acceptance in clinical analyzers and in clinical instrumentation, respectively, only around 1970 (for reviews see 1-5). Here we report ...

Introduction The electrochemical gas sensor project is now at a state were the results of the first test pointed out the different needs for improvement and optimization both of the fabrication process and the testing. This report will focus on this sensor, detail the obtained results for CO sensing, and list the different feedbacks obtained. All those information will help building a second ge...