Abstract
In this paper, large-scale Bi(2201) nanofilm was mechanically exfoliated. The thin film Bi(2201) was characterized by means of optical image and XRD spectrum analysis. AFM is used to study the stability of Bi(2201) thin film. We found that the Bi(2201) nanofilm was less sensitive to CO2 while it extremely got affected by humidity. With the rise in the humidity, the hydrolytic speed of Bi(2201) film was greatly increased. When the relative humidity of the air is lower than 20%, the Bi(2201) thin film can be stable in two days. However, when the relative humidity is about 90% RH, Bi(2201) film will be hydrolyzed in few minutes.
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