Fig. 2: The normalized electron numbers of the valence band for different solids in contact with water and solution. | Nature Communications

Fig. 2: The normalized electron numbers of the valence band for different solids in contact with water and solution.

From: Understanding contact electrification at liquid–solid interfaces from surface electronic structure

Fig. 2

a Diamond carbon, b SiO2, c TiO2, and d HfO2. The normalized electron numbers near the Fermi level for different solids in contact with water and solution. d Diamond carbon, e SiO2, f TiO2, and g HfO2. h The comparison of vacuum level, Fermi level change, and work functions after contacting with water. h SiO2, i TiO2, and j HfO2.

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