TU Darmstadt / ULB / TUbiblio

Finely Tuned SnO2 Nanoparticles for Efficient Detection of Reducing and Oxidizing Gases: The Influence of Alkali Metal Cation on Gas-Sensing Properties

Lee, Szu-Hsuan and Galstyan, Vardan and Ponzoni, Andrea and Gonzalo-Juan, Isabel and Riedel, Ralf and Dourges, Marie-Anne and Nicolas, Yohann and Toupance, Thierry :
Finely Tuned SnO2 Nanoparticles for Efficient Detection of Reducing and Oxidizing Gases: The Influence of Alkali Metal Cation on Gas-Sensing Properties.
[Online-Edition: https://doi.org/10.1021/acsami.7b18140]
In: ACS Applied Materials & Interfaces, 10 (12) pp. 10173-10184. ISSN 1944-8244
[Article] , (2018)

Official URL: https://doi.org/10.1021/acsami.7b18140

Abstract

Tin dioxide (SnO2) nanoparticles were straightforwardly synthesized using an easily scaled-up liquid route that involves the hydrothermal treatment, either under acidic or basic conditions, of a commercial tin dioxide particle suspension including potassium counterions. After further thermal post-treatment, the nanomaterials have been thoroughly characterized by Fourier transform infrared and Raman spectroscopy, powder X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and nitrogen sorption porosimetry. Varying pH conditions and temperature of the thermal treatment provided cassiterite SnO2 nanoparticles with crystallite sizes ranging from 7.3 to 9.7 nm and Brunauer–Emmett–Teller surface areas ranging from 61 to 106 m2·g–1, acidic conditions favoring potassium cation removal. Upon exposure to a reducing gas (H2, CO, and volatile organic compounds such as ethanol and acetone) or oxidizing gas (NO2), layers of these SnO2 nanoparticles led to highly sensitive, reversible, and reproducible responses. The sensing results were discussed in regard to the crystallite size, specific area, valence band energy, Debye length, and chemical composition. Results highlight the impact of the counterion residuals, which affect the gas-sensing performance to an extent much higher than that of size and surface area effects. Tin dioxide nanoparticles prepared under acidic conditions and calcined in air showed the best sensing performances because of lower amount of potassium cations and higher crystallinity, despite the lower surface area.

Item Type: Article
Erschienen: 2018
Creators: Lee, Szu-Hsuan and Galstyan, Vardan and Ponzoni, Andrea and Gonzalo-Juan, Isabel and Riedel, Ralf and Dourges, Marie-Anne and Nicolas, Yohann and Toupance, Thierry
Title: Finely Tuned SnO2 Nanoparticles for Efficient Detection of Reducing and Oxidizing Gases: The Influence of Alkali Metal Cation on Gas-Sensing Properties
Language: English
Abstract:

Tin dioxide (SnO2) nanoparticles were straightforwardly synthesized using an easily scaled-up liquid route that involves the hydrothermal treatment, either under acidic or basic conditions, of a commercial tin dioxide particle suspension including potassium counterions. After further thermal post-treatment, the nanomaterials have been thoroughly characterized by Fourier transform infrared and Raman spectroscopy, powder X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and nitrogen sorption porosimetry. Varying pH conditions and temperature of the thermal treatment provided cassiterite SnO2 nanoparticles with crystallite sizes ranging from 7.3 to 9.7 nm and Brunauer–Emmett–Teller surface areas ranging from 61 to 106 m2·g–1, acidic conditions favoring potassium cation removal. Upon exposure to a reducing gas (H2, CO, and volatile organic compounds such as ethanol and acetone) or oxidizing gas (NO2), layers of these SnO2 nanoparticles led to highly sensitive, reversible, and reproducible responses. The sensing results were discussed in regard to the crystallite size, specific area, valence band energy, Debye length, and chemical composition. Results highlight the impact of the counterion residuals, which affect the gas-sensing performance to an extent much higher than that of size and surface area effects. Tin dioxide nanoparticles prepared under acidic conditions and calcined in air showed the best sensing performances because of lower amount of potassium cations and higher crystallinity, despite the lower surface area.

Journal or Publication Title: ACS Applied Materials & Interfaces
Volume: 10
Number: 12
Publisher: American Chemical Society Publications
Uncontrolled Keywords: gas sensing, nanostructures, oxidizing gases (NO2), reducing gases(H2; CO), SnO2 nanoparticles, volatile organic compounds
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 07 Jun 2018 08:15
DOI: 10.1021/acsami.7b18140
Official URL: https://doi.org/10.1021/acsami.7b18140
Funders: This work was partly supported by the Erasmus Mundus Joint Doctoral program International Doctoral School in Functional Materials for Energy, Information Technology and Health (Szu-Hsuan Lee fellowship)., This work was also supported by the French-German University (UFA Doctoral College in Functional Materials for Energy and Information Technology) and was carried out within the framework of European Multifunctional Material Institute.
Export:

Optionen (nur für Redakteure)

View Item View Item