BrainMap

Mrs. Cecilia Lete

Senior Researcher

- INSTITUTUL DE CHIMIE FIZICA - ILIE MURGULESCU

Researcher

Curriculum Vitae (26/03/2025)

Expertise & keywords

Interactional and functional effects of the substrate on the electrochemical behavior of micro and nanostructured metallic and oxidic deposits Call name: Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0272 2011 - 2016

Role in this project:

Coordinating institution: Institutul de Chimie Fizica Ilie Murgulescu al Academiei Romane

Project partners: Institutul de Chimie Fizica Ilie Murgulescu al Academiei Romane (RO)

Affiliation: Institutul de Chimie Fizica Ilie Murgulescu al Academiei Romane (RO)

Project website: http://www.icf.ro/pr_2011/NS1/index.html

Abstract:

This project aims at systematically put into evidence interactional and functional effects of the substrate on the electrochemical performances of metallic (Pt) and oxidic (e.g., TiO2, RuO2, Co3O4) particles, estimated and quantified from their activity for O2 evolution and CH3OH oxidation. The choice of such materials (intensively studied in literature) and that of typical processes is justifiable because it allows focusing on the effects of the substrate, by avoiding the need for large amount of data on the electroactive material itself. A critical comparison of the results with those reported in literature will allow elucidating (at least partially) some controversial or contradictory aspects of the electrochemical properties of these materials. An important ab initio simplification results from the use of boron-doped diamond (BDD) as a substrate for electroactive particles. This enables neglecting capacitive and pseudo-capacitive influences, due to the outstanding features of BDD: low background current, high stability, and inertness to adsorption. The high overpotential for O2 evolution and the lack of activity for alcohols anodic oxidation are, in the context of this project, additional advantages. Since the influence of the substrate will be rather negligible, a more straightforward correlation between the specific properties of the deposited material and the overall electrochemical activity of the electrode system is expected.

Electrochemical micro-biosensors based on electrodes and their arrays modified with composite materials Call name: Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0271 2011 - 2016

Role in this project:

Coordinating institution: Universitatea POLITEHNICA din Bucuresti

Project partners: Universitatea POLITEHNICA din Bucuresti (RO)

Affiliation: Universitatea POLITEHNICA din Bucuresti (RO)

Project website: http://www.microbiosens.ro

Abstract:

The research project aims at developing new multi-analyte microbiosensors, amperometric and voltammetric biosensors, based on electrodes and their arrays modified with composite conducting polymers-enzymes materials. The specific objectives of the project are: i) the elaboration of analytical procedures for the multi-analyte detection of biologically and environmentally important compounds using multi-analyte microsensors; ii) the elaboration and optimization of rapid and simple procedures for the modification of the electrode surfaces with biocomposite materials consisting of organic conducting polymers and tyrosinase, which are reliable and highly selective; iii) the full characterization of microelectrodes and arrays of microelectrodes of different geometries aiming to obtain information about the real active area of microelectrodes, generator-collector efficiency, and the number of active microelectrodes in an array. Compounds of biological and environmental significance, such as catechol, dopamine, and phenol, will be the target analytes. The specific objectives are addressing key problems issued in the area of microelectrodes (MEs) and their arrays. The benefits of the electrochemical operation mode of modified MEs will provide an originally analytical procedure to be developed for multia-nalyte determination. Finally, the new micro-biosensors will be characterized as regards to response range, selectivity, limits of detection and quantification, and repeatability.

FILE DESCRIPTION	DOCUMENT
List of research grants as project coordinator or partner team leader
Significant R&D projects for enterprises, as project manager
R&D activities in enterprises
Peer-review activity for international programs/projects