Surface-enhanced infrared absorption?

Krauth, Oliver; Fahsold, G.; Lehmann, A.

doi:10.1016/s0039-6028(99)00073-4

Cited by 9 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[56] The exact mechanism of the SEIRA effect has been amply discussed in the literature [57,58] and, like the similar phenomenon of surface enhancement of Raman scattering (SERS), is attributed to two different contributions, namely, electromagnetic and chemical origins. [33] However, we would like to note that unlike in SERS, which, with just some exceptions, [59] is limited to the coinage metals, SEIRAS seems to be much less substrate-specific, and reasonable enhancement has been reported from iron, [60,61] platinum, [62,63] palladium [64][65][66][67] and silicon carbide [68] particles.…”

Section: The Seira Effect: Atr-seirasmentioning

confidence: 86%

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges

et al. 2019

View full text Add to dashboard Cite

The field of electrochemical CO2 conversion is undergoing significant growth in terms of the number of publications and worldwide research groups involved. Despite improvements of the catalytic performance, the complex reaction mechanisms and solution chemistry of CO2 have resulted in a considerable amount of discrepancies between theoretical and experimental studies. A clear identification of the reaction mechanism and the catalytic sites are of key importance in order to allow for a qualitative breakthrough and, from an experimental perspective, calls for the use of in‐situ or operando spectroscopic techniques. In‐situ infrared spectroscopy can provide information on the nature of intermediate species and products in real time and, in some cases, with relatively high time resolution. In this contribution, we review key theoretical aspects of infrared reflection spectroscopy, followed by considerations of practical implementation. Finally, recent applications to the electrocatalytic reduction of CO2 are reviewed, including challenges associated with the detection of reaction intermediates.

show abstract

Section: The Seira Effect: Atr-seirasmentioning

confidence: 86%

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges

et al. 2019

View full text Add to dashboard Cite

show abstract

“…One feature that is generally observed is the asymmetric peak shape of different normal modes on the SEIRA spectrum. − Krauth et al examined asymmetric line shapes of the modes of CO adsorbed to iron films coated on MgO(001) surfaces . The observed Fano-like line shape for the main IR absorbance line has been explained by resonance of the vibrations of CO and electronic transitions between the metal and CO molecule, by applying the electron−hole pair model of Langreth. , However, it should be noted that this band asymmetry has been shown to occur for molecules such as n-heptane that can only physisorb to a metal surface, meaning the chemical mechanism does not necessarily cause the Fano-like line shape.…”

Section: Enhanced Absorption Of Molecules Near Metal Clustersmentioning

confidence: 99%

Theoretical Studies of Plasmonics using Electronic Structure Methods

2011

View full text Add to dashboard Cite

“…SEIRAS can detect the adsorbates in electrochemical N2 fixation in operando. The infrared adsorption peaks can be attributed to vibrational modes of reaction intermediates, and these signals can be enhanced on metal surfaces by the SEIRA effect (enhancement of infrared adsorption as a result of enhanced optical fields on a surface 184 . Several studies have attempted SEIRAS for electrochemical N2 reduction 185,186 , but contributions from contamination to the detected species are highly probable.…”

Section: Boxes [Bh1] Box 1 Sources Of System N Mass [Bh2] Massncatmentioning

confidence: 99%

Methods for nitrogen activation by reduction and oxidation

Iriawan

Andersen

Zhang

et al. 2021

Nat Rev Methods Primers

177

147

View full text Add to dashboard Cite

The industrial Haber-Bosch process to produce ammonia (NH3) from dinitrogen (N2) is crucial for modern society. However, N2 activation is inherently challenging and the Haber-Bosch process has significant drawbacks, as it is highly energy intensive, not sustainable due to substantial CO2 emissions primarily from the generation of H2 and requires large-centralized facilities. New strategies of sustainable N2 activation, such as low-temperature thermochemical catalysis and (photo)electrocatalysis, have been pursued, but progress has been hindered by the lack of rigor and reproducibility in the collection and analysis of results.In this Primer, we provide a holistic step-by-step protocol, applicable to all nitrogen-transformation reactions, focused on verifying genuine N2 activation by accounting for all contamination sources. We compare state-of-the-art results from different catalytic reactions following the protocol's framework, and discuss necessary reporting metrics and ways to interpret both experimental and density functional theory results. This Primer covers various common pitfalls in the field, best practices to improve reproducibility and cost-efficient methods to carry out rigorous experimentation. The future of nitrogen catalysis will require an increase in rigorous experimentation and standardization to prevent false positives from appearing in the literature, which can enable advancing towards practical technologies for the activation of N2.

show abstract

Surface-enhanced infrared absorption?

Cited by 9 publications

References 18 publications

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges

Theoretical Studies of Plasmonics using Electronic Structure Methods

Methods for nitrogen activation by reduction and oxidation

Contact Info

Product

Resources

About

Surface-enhanced infrared absorption?

Cited by 9 publications

References 18 publications

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO2: Theory, Practice and Challenges

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO2: Theory, Practice and Challenges

Theoretical Studies of Plasmonics using Electronic Structure Methods

Methods for nitrogen activation by reduction and oxidation

Contact Info

Product

Resources

About

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges