Fig. 3

(a) The FTIR spectra of B and SA@B composite particles. The XPS spectra of SA@B composite particles: (b) full spectra (c) C 1S (d) B 1 s (e) O 1S.

(a) The FTIR spectra of B and SA@B composite particles. The XPS spectra of SA@B composite particles: (b) full spectra (c) C 1S (d) B 1 s (e) O 1S.