Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf
1 PublikationStructure and chemistry of surface-doped Pt:SnO2 gas sensing materials
Degler, D.; Pereira De Carvalho, H. W.; Kvashnina, K.; Grunwaldt, J.-D.; Barsan, U. W. N.
Abstract
Surface-doped Pt:SnO2 was synthesized by impregnation of calcined SnO2 made by an aqueous sol-gel route. The structure of the introduced Pt-dopant and its behaviour during gas exposure were examined by in-situ and operando X-ray absorption spectroscopy. The results reveal that Pt forms a nano-sized PtO2 phase, which was not found for bulk and surface doped materials, studied previously. In a comparative investigation of undoped and Pt-doped SnO2 gas sensors the performance and the surface chemistry were investigated, the latter one using operando FT-IR spectroscopy. The results prove a strong influence of the different Pt structures on the surface chemistry of SnO2, providing the basis for an understanding on the varying sensor performance of differently synthesized Pt:SnO2 gas sensing materials
Beteiligte Forschungsanlagen
- Rossendorf Beamline an der ESRF DOI: 10.1107/S1600577520014265
Verknüpfte Publikationen
- DOI: 10.1107/S1600577520014265 is cited by this (Id 23006) publication
-
RSC Advances 6(2016)34, 28149-28155
DOI: 10.1039/C5RA26302F
Cited 48 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-23006
Jahre: 2023 2022 2021 2020 2019 2018 2017 2016 2015