Search

Your search keyword '"Moulaee, Kaveh"' showing total 2 results
Start Over Author "Moulaee, Kaveh" Topic carbon
2 results on '"Moulaee, Kaveh"'

1. Development of a MnO₂-Modified Screen-Printed Electrode for Phenol Monitoring.

Author

Di Chio, Roberto, Arena, Francesco, Leonardi, Salvatore Gianluca, Moulaee, Kaveh, Neri, Giovanni, and Donato, Nicola

Subjects
PHENOL, ELECTROCHEMICAL sensors, CARBON electrodes, POLLUTION monitoring, ELECTRODES
Abstract

In this article, the electrochemical monitoring of phenol (Ph) in water by using a nanostructured MnO2-modified screen-printed carbon electrode (MnO2-SPCE) is reported. MnO2 nanoparticles were synthesized by the redox-precipitation method. Morphological, textural, and microstructural characteristics were investigated by scanning electron microscopy (SEM), X-ray diffraction, Raman, Brunauer–Emmett–Teller (BET) surface area, and pore volume analyses. Electrochemical properties of the modified MnO2-SPCE electrode have been investigated by cyclic voltammetry and linear sweep voltammetry. The detection of Ph in water by the developed sensor was exploited using square wave voltammetry and chronoamperometry. The sensor showed good characteristics, such as simple fabrication, low cost, good sensitivity, stability, reproducibility, and selectivity, against inorganic analytes and other phenolic compounds. The reported results demonstrated the great potential of nanostructured MnO2 in developing high performances electrochemical sensors to be utilized in the field of environmental pollution monitoring. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

2. Carbon-dots conductometric sensor for high performance gas sensing

Author

Alessandro Silvestri, Giovanni Neri, Sabrina Conoci, Simona Bettini, Maurizio Prato, Shadi Sawalha, Ludovico Valli, Salvatore Petralia, Kaveh Moulaee, Giuseppe Nocito, Sawalha, Shadi, Moulaee, Kaveh, Nocito, Giuseppe, Silvestri, Alessandro, Petralia, Salvatore, Prato, Maurizio, Bettini, Simona, Valli, Ludovico, Conoci, Sabrina, and Neri, Giovanni

Subjects
Materials science, Materials Science (miscellaneous), Conductometric sensor, chemistry.chemical_element, Conductometric sensors, NO2, Nanomaterials, NO, Colloid, chemistry.chemical_compound, Materials Chemistry, Carbon dots, Settore CHIM/01 - Chimica Analitica, Carboxylate, QD1-999, Detection limit, Reproducibility, Carbon dot, Characterization (materials science), Chemistry, Chemical engineering, chemistry, Chemistry (miscellaneous), 2, Pyrolysis, Carbon
Abstract

In this paper the first example of using C-dots (CDs) as sensing nanomaterial for monitoring low concentrations of NO2 in ambient air is reported. In the logic to support a green circular economy, CDs were prepared from a natural low cost precursor consisting in olive solid waste (OSW) by a simple pyrolysis process combined with chemical oxidation. Characterization data showed the formation of spherical CDs with dimensions in the narrow size range from 0.5 to 5 nm and charged with functional groups (COO- (carboxylate), C-O-C (epoxide) and C-OH (hydroxyl) imprinting excellent water colloidal dispersion. The nanomaterial was used to fabricate and test a conductometric gas sensor (CDs-sensor) that was found to exhibit excellent performances in terms of high and selective response to sub-ppm concentration of NO2 at low temperature (150 °C), low limit of detection (LOD) of 50 ppb, good reproducibility and stability over use and aging. To the best of our knowledge, this is the first example reported in the literature of CDs high performances gas sensing material. Results here presented pave the way for a new class of a carbon nanomaterial for gas sensing to be applied in the field of environmental monitoring.

Published
2021

Catalog

Books, media, physical & digital resources
See catalog results