Research Article

Adsorption-Oxidation Mechanism of δ-MnO2 to Remove Methylene Blue

Table 3

The best fit of N 1s XPS spectra for MB adsorption.

() () () ()

N atoms not interacted with acid δ-MnO2 surface65.95%69.95%68.41%72.32%
The N atoms interacted with acid δ-MnO2 surface34.05%30.05%31.59%27.68%

(%): peak area percentage.