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. 2017 Aug 29;7:9761. doi: 10.1038/s41598-017-09777-y

Figure 2.

Figure 2

Adsorption capacity for different GO papers. (a) Adsorption/desorption isotherm (H2O) of 3 kinds of adsorbents. Filled and open symbols represent adsorption and desorption branches respectively. ① First step at low partial pressure region. ② Flat region. ③ Second step at high partial pressure region. ④ Saturation region. (b) Adsorption isotherm (H2O) of graphite powder and 200 °C thermal reduced hGO, varied by different reduction times.