Fig. 2
a FTIR, b typical XPS survey spectra, and (h) elemental atomic content of K7XY61 and K7XY181. c–g High-resolution XPS spectra of C, N, O, P and Ca of K7XY-61in
Fig. 2 | Heritage Science
a FTIR, b typical XPS survey spectra, and (h) elemental atomic content of K7XY61 and K7XY181. c–g High-resolution XPS spectra of C, N, O, P and Ca of K7XY-61in
