Nanoplasmonic in situ Spectroscopy for Catalysis Applications

Nanoplasmonic sensing in general and indirect nanoplasmonic sensing (INPS) in particular constitute a versatile and promising experimental strategy for real time in situ spectroscopy of catalyst materials at the ensemble and the single particle level under realistic conditions in terms of temperature, pressure and harsh chemical environment. In this viewpoint article we introduce and discuss the fundamental concepts of INPS and illustrate its wide applicability by reviewing a number of recent application examples including studies of catalyst nanoparticle sintering, oxidation/reduction kinetics, and changes in adsorbate molecule surface coverage, NOx storage, optical nanocalorimetry and metal hydride formation in individual Pd nanoparticles. Furthermore, we will highlight the potential of the INPS technique as in situ spectroscopy tool in a wider perspective by briefly illustrating future directions.