Publications by authors named "Clare E Harvey"
Abstract: Surface-enhanced Raman spectroscopy (SERS) and tip-enhanced Raman spectroscopy (TERS) were until recently limited in their applicability to the majority of heterogeneous catalytic reactions. Recent developments begin to resolve the conflicting experimental requirements for SERS and TERS on the one hand, and heterogeneous catalysis on the other hand. This article discusses the development and use of SERS and TERS to study heterogeneous catalytic reactions, and the exciting possibilities that may now be within reach thanks to the latest technical developments.
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- Raman spectroscopy is a key nondestructive method for studying heterogeneous catalysts, but its use on millimeter-sized catalyst bodies is limited due to issues like large fluorescence signals and scattering.
- Different techniques have been explored to tackle these challenges, including time-resolved Raman spectroscopy (TRRS), spatially offset Raman spectroscopy (SORS), and surface-enhanced Raman spectroscopy (SERS).
- The paper highlights that TRRS is particularly effective in providing chemical information deep within catalyst bodies, reducing interference from fluorescence and enabling the study of localized activity through time-resolved SERS, thus enhancing the prospects for industrial catalysis research.
The integration of Atomic Force Microscopy and Raman spectroscopy is tested for use in heterogeneous catalysis research by a preliminary investigation, the photo-oxidation of rhodamine-6G. Temperature and atmosphere were varied in an in situ cell to show compatibility with realistic reaction conditions.
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