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. Vapor-phase saturation of HGO with nine selected organic probes unveiled pyridine as the most suitable due to clear band resolution and selective interaction. The effect of probe deuteration and steric hindrance caused by the complex molecular structure of the probe was examined. IR probe testing was complemented by isopiestic sorption measurements. Collectively, the results demonstrate that IR-probe approaches were made to estimate the concentration of adsorption sites on the GO surface.
Ratova et al. (Fri,) studied this question.