The XPS spectra of N,P-SFAC prepared under better conditions, (a) is the full spectrum, (b), (c) and (d) are the high-resolution spectra of C 1s, N 1s and P 2p, respectively
XpS maps of N, P-SFAC, (a) full spectrum, (b), (c) and (d) c 1s, N 1s, and P 2p, respectively, are high-resolution energy spectra produced under superior conditions