Synthesis and characterization of a new ceramic nanomaterial SiO2/NPsSm2O3/C-graphite for the development of electrochemical sensors

A new ceramic nanomaterial, SiO2/NPsSm2O3/C-graphite (specific surface area 340 m2 g−1), obtained by the sol-gel process, was synthesized for industrial, pharmaceutical, and environmental purposes. Information on the ceramic formation dynamics and its behavior were obtained by determining the follow...

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Bibliographic Details
Published in:Materials chemistry and physics 2020-03, Vol.243, p.122255, Article 122255
Main Authors: Blasques, Rodrigo Vieira, Pereira, Maria Alessandra Azevedo, Mendes, Ana Marcia Rabelo Vieira, Filho, Nestor Everton Mendes, Gomes, Wolia Costa, Arenas, Leliz Ticona, Marty, Jean-Louis, Gurgo, María Isabel Pividori, Nunes, Gilvanda Silva, Villis, Paulo Cesar Mendes
Format: Article
Language:English
Subjects:
Ceramic nanomaterial
Ceramics industry
Chemical sensors
Electrochemical analysis
Electrochemistry
Fourier transforms
Functional groups
Graphite
Infrared absorption
Molecular structure
Nanomaterials
NMR
Nuclear magnetic resonance
Sensors
Silicon dioxide
Sol-gel
Sol-gel processes
Spectrum analysis
Substrates
Surface area
Thermogravimetry
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Summary:A new ceramic nanomaterial, SiO2/NPsSm2O3/C-graphite (specific surface area 340 m2 g−1), obtained by the sol-gel process, was synthesized for industrial, pharmaceutical, and environmental purposes. Information on the ceramic formation dynamics and its behavior were obtained by determining the following parameters: surface area, pore volume, imaging and three-dimensional appearance (scanning electron microscopy, coupled to dispersive energy spectroscopy), molecular structure and the presence of functional groups (thermogravimetry, Fourier-transform infrared absorption spectroscopy, and 29Si nuclear magnetic resonance), and electrochemical behavior. SiO2/NPsSm2O3/C-graphite was used to construct electrodes with promising properties and showed that it can be used as a base substrate for the immobilization of electroactive species in electrochemistry and electrocatalysis. •A new ceramic nanomaterial SiO2/NPsSm2O3/C-graphite was synthetized.•Addition of NPsSm2O3 has resulted in increased specific surface area.•The structural and thermal properties of the nanomaterial were studied.•The electroactivity was investigated, showing as a promising material.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2019.122255