“…[8] XPS characterization of NC@MnO HHSs confirms that the C 1s spectrum can well fit to six peaks at 284.3, 284.8, 285.5, 286.5, 288.0 and 289.3 eV, which correspond to C=C, CÀ C, CÀ N, CÀ OH, C=O and OÀ C=O components, respectively ( Figure 4f). [9][10][11]14,38] N 2 ad-/desorption measurements reveal that the special surface area of NC@MnO HHSs is about 55.4 m 2 g À 1 , and their corresponding pore volume is 0.079 cm 3 g À 1 ( Figure S4).…”