Figure 2

(a) Survey XPS spectrum of HQDC-1000 and its high-resolution XPS spectra of (b) C1s, (c) N1s, (d) S2p, (e) P2p and (f) Fe2p , respectively.

(a) Survey XPS spectrum of HQDC-1000 and its high-resolution XPS spectra of (b) C1s, (c) N1s, (d) S2p, (e) P2p and (f) Fe2p , respectively.