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Adsorption Science & Technology
/
2021
/
Article
/
Tab 3
/
Research Article
Adsorption-Oxidation Mechanism of
δ
-MnO
2
to Remove Methylene Blue
Table 3
The best fit of N 1s XPS spectra for MB adsorption.
(
)
(
)
(
)
(
)
N atoms not interacted with acid
δ
-MnO
2
surface
65.95%
69.95%
68.41%
72.32%
The N atoms interacted with acid
δ
-MnO
2
surface
34.05%
30.05%
31.59%
27.68%
(%): peak area percentage.