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Selective detection of reaction intermediates using concentration-modulation excitation DRIFT spectroscopy
(Elsevier Science, 2013-04-30)
Concentration-modulation excitation spectroscopy (MES) experiments in combination with phase-sensitive detection (PSD) were used to monitor the gas–solid interface by means of in operando diffuse reflectance infrared ...
Resolution of intermediate surface species by combining modulated infrared spectroscopy and chemometrics
(Elsevier Science, 2019-02)
In this work, aiming at exploiting the essential particularities of modulation excitation spectroscopy (MES) coupled to phase sensitive detection (PSD) and chemometrics, a data analysis procedure was implemented to analyze ...
In-Situ DRIFT Study of Au-Ir/Ceria Catalysts: Activity and Stability for CO Oxidation
(Springer/plenum Publishers, 2016-02)
Monometallic gold and iridium, and bimetallic gold-iridium on ceria catalysts were synthesized by deposition-precipitation with urea. The activity of these ceria supported catalysts for CO oxidation was: Au-Ir >> Au > Ir. ...
Revealing the electronic and molecular structure of randomly oriented molecules by polarized two-photon spectroscopy
(American Chemical Society - ACSWashington, DC, 2013-05)
In this Letter, we explored the use of polarized two-photon absorption (2PA) spectroscopy, which brings additional information when compared to methods that do not use polarization control, to investigate the electronic ...
The photothermal transparent transducer method applied to the spectroscopy of liquids
(Elsevier B.V. Sa, 2009-03-02)
A new kind of spectroscopy of liquids is presented: the photothermal transparent transducer method applied to the spectroscopy of liquid samples. The liquid sample is placed in a small (approximately 20 ml) chamber with a ...
The photothermal transparent transducer method applied to the spectroscopy of liquids
(Elsevier B.V. Sa, 2009-03-02)
A new kind of spectroscopy of liquids is presented: the photothermal transparent transducer method applied to the spectroscopy of liquid samples. The liquid sample is placed in a small (approximately 20 ml) chamber with a ...
Identification of key reaction intermediates during toluene combustion on a Pd/CeO2 catalyst using operando modulated DRIFT spectroscopy
(Elsevier Science, 2021-09)
Operando DRIFT spectroscopy is used to elucidate the role of key reaction intermediates during toluene oxidation on a Pd/CeO2 catalyst and bare CeO2 support. Selective identification of active surface species and their ...
Ultrafast all-optical modulation in 2D hybrid perovskites
(American Chemical Society, 2019-07-17)
Two-dimensional (2D) hybrid organic-inorganic Ruddlesden-Popper perovskites (RPPs) have been recently shown to exhibit large nonlinear optical properties due to the strong excitonic effects present in their multiple quantum ...
The photothermal transparent transducer method applied to the spectroscopy of liquids
(Elsevier B.V. Sa, 2014)