Since industrial revolution, human activities drive towards unsustainable global economy due to the overexploitation of natural resources and the unacceptable emissions of pollution and greenhouse gases. In order to address that issue, engineering research has been focusing on gas sensors development for monitoring gas emissions and controlling the combustion process sustainability. Semiconductors metal oxides sensors are attractive technology because they require simple design and fabrication, involving high accessibility, small size and low cost. Perovskite oxides are the most promising sensing materials because sensitivity, selectivity, stability and speed-response can be modulated and optimized by changing the chemical composition. One of the most convenient synthesis process of perovskite is the citrate-nitrate auto-combustion method, in which nitrate is the oxidizing agent and citrate is the fuel and the chelating argent in the same time. Since the sensibility of perovskite oxides depends on the defective crystallographic structure and the nanomorphology, the experimental was designed in order to study the dependence of powder properties on the synthesis conditions, such as the solution acidity and the relative amount of metals, nitrates and citric acid. Crystalline structure was studied in depth for defining the effects of synthesis conditions on size, morphology and crystallographic structure of nanopowders of LaFeO3.

Combustion synthesis of LaFeO3 sensing nanomaterial / Zaza, F.; Pallozzi, V.; Serra, E.; Pasquali, Mauro. - STAMPA. - 1667:(2015), p. 020003. (Intervento presentato al convegno NANOFORUM 2014 tenutosi a ita nel 2014) [10.1063/1.4922559].

Combustion synthesis of LaFeO3 sensing nanomaterial

PASQUALI, Mauro
2015

Abstract

Since industrial revolution, human activities drive towards unsustainable global economy due to the overexploitation of natural resources and the unacceptable emissions of pollution and greenhouse gases. In order to address that issue, engineering research has been focusing on gas sensors development for monitoring gas emissions and controlling the combustion process sustainability. Semiconductors metal oxides sensors are attractive technology because they require simple design and fabrication, involving high accessibility, small size and low cost. Perovskite oxides are the most promising sensing materials because sensitivity, selectivity, stability and speed-response can be modulated and optimized by changing the chemical composition. One of the most convenient synthesis process of perovskite is the citrate-nitrate auto-combustion method, in which nitrate is the oxidizing agent and citrate is the fuel and the chelating argent in the same time. Since the sensibility of perovskite oxides depends on the defective crystallographic structure and the nanomorphology, the experimental was designed in order to study the dependence of powder properties on the synthesis conditions, such as the solution acidity and the relative amount of metals, nitrates and citric acid. Crystalline structure was studied in depth for defining the effects of synthesis conditions on size, morphology and crystallographic structure of nanopowders of LaFeO3.
2015
NANOFORUM 2014
Chemical synthesis; Combustion synthesis; Nanopowders; Sensors; X-ray diffraction; Physics and Astronomy (all)
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Combustion synthesis of LaFeO3 sensing nanomaterial / Zaza, F.; Pallozzi, V.; Serra, E.; Pasquali, Mauro. - STAMPA. - 1667:(2015), p. 020003. (Intervento presentato al convegno NANOFORUM 2014 tenutosi a ita nel 2014) [10.1063/1.4922559].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/955791
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