“…40 The C 1s spectrum shows an asymmetric peak, which is deconvoluted into four components to obtain a good fit; the main component at a B.E. of 282.3 eV is assigned to C-Al species, 41,43,44 while the other peaks located at 284.1 eV, 285.8 eV and 287.5 eV can be ascribed to C-C, C-O/C-N, and CvO bonds, respectively. 45,46 The asymmetric O 1s spectrum is fitted with two components; the main peak at 532.5 eV corresponds to O-Al-N/CvO bonds, while the other peak at 533.5 eV can be assigned to Al-O/C-O bonds.…”