I want to explore a technique to find reactive radical species in solid-phase pollutant degradation. For example, ESR, EPR, or transient absorption is used for the detection of reactive radical species in the liquid phase.
In an article, I found a scavenging study see the attached figure. Is there any other way to detect reactive radical species in solid-state photocatalysis? Moreover, is the data reliable like the liquid phase?
To detect reactive radical species in solid-state photocatalysis, techniques such as EPR spectroscopy, spin trapping, fluorescence spectroscopy, mass spectrometry, and transient absorption spectroscopy can be employed. While data reliability can be comparable to liquid-phase analyses, challenges like sample heterogeneity should be addressed to ensure accurate results.
Abdelhak Maghchiche thanks for giving me your time and attention. Can you please provide me with a reference for this type of study? However, I am concerned about solid-state radical detection through EPR. Usually, EPR is done in the liquid phase then how a sample can be tested in a solid state. I mean does EPR tube support solid material? Your kind suggestion will be appreciated.
Techniques like Electron Paramagnetic Resonance (EPR) and diffuse reflectance transient absorption spectroscopy can effectively detect reactive radical species in solid-state photocatalysis, though EPR requires special sample preparation for solids.
-Howe, R. F., & Gratzel, M. (1985). EPR observation of trapped electrons in colloidal titanium dioxide. The Journal of Physical Chemistry, 89(21), 4495-4499.
-Tamaki, Y., Furube, A., Murai, M., Hara, K., Katoh, R., & Tachiya, M. (2006). Direct observation of reactive trapped holes in TiO2 undergoing photocatalytic oxidation of adsorbed alcohols: evaluation of the reaction rates and yields. Journal of the American Chemical Society, 128(2), 416-417.
- Badges
- Science method
- Similar topics
- Biological Science
- Ecology