Figure 3

XPS characterizations:
(A) C1s XPS curve of MCN-1. (B) C1s XPS curve of OMCN-1. (C) N1s XPS curve of MCN-1. (D) C1s XPS curve of OMCN-1.
XPS characterizations:
(A) C1s XPS curve of MCN-1. (B) C1s XPS curve of OMCN-1. (C) N1s XPS curve of MCN-1. (D) C1s XPS curve of OMCN-1.