“…Another reason may be the theoretically demonstrated ability of the phosphorus atoms in a substitutional position to chemisorb oxygen, which leads to the formation of P-O bonds [294]. This explanation is supported by the experimentally observed formation of phosphate structures in phosphorus-containing carbons obtained from oxygen-free sources like graphite and black phosphorus [271], fullerene C 60 and red phosphorus [245], carbon monolith and red phosphorus [246] or by chemical vapor deposition of triphenylphosphine [295].…”