Adsorption Study of Water on Gold Using the Quartz-crystal Microbalance Technique: Assessment of BET and FHH Models of Adsorption

摘要

In the atmospheric corrosion of metals, the adsorption of water affects the corrosion rates and, hence, the knowledge of water adsorption and metal oxyhydroxide formation is important in understanding the atmospheric corrosion pro- cess. Since gold does not form surface oxides and therefore retains its surface characteristics throughout adsorption ex- periments, it provides a model system. The purposes of the present research were (i) to measure the adsorption of water on gold as a function of relative humidity (RH) and tem- perature and (ii) to assess the Brunauer-Emmett-Teller (BET) and the Frenkel-Halsey-Hill (FHH) model for water adsorption.