Will FTIR be able to differentiate FeOOH and the H2O adsorbed on the surface of iron oxide nanoparticle?
Yes. FTIR is able to differentiate FeOOH and the H2O adsorbed on the surface of iron oxide nanoparticle. You can see more complete answer in Cornell R.M., Schwertmann U. The iron oxides: Structure, properties, reactions, occurrence and uses - Weinheim: Wiley-VCH, 1996. - 604 p. I think it is one of the best book about iron oxides/oxyhydroxides.
I think it should be different. However, I wonder what exactly means a "surface of nanoparticle".. For water adsorbed to Fe oxide we see all the features of water, especially OH stretching band, which are somewhat, but not very disturbed.
For FeOOH, I expect considerable changes in OH stretching region.. See, for example: P. Ou et al. Mat. Lett. 62 (2008) 914–917
You could very simply check if you have adsorbed water or FeOOH by temperature-dependent IR spectroscopy.
Yes. FTIR is able to differentiate FeOOH and the H2O adsorbed on the surface of iron oxide nanoparticle. You can see more complete answer in Cornell R.M., Schwertmann U. The iron oxides: Structure, properties, reactions, occurrence and uses - Weinheim: Wiley-VCH, 1996. - 604 p. I think it is one of the best book about iron oxides/oxyhydroxides.
Additionally to my yesterday answer. From my experience on the synthesis and investigation FeOOH/Fe2O3 systems, I think that ESCA will be very useful for your purpose ( to differentiate FeOOH and the H2O adsorbed on the surface of iron oxide nanoparticle)
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