Trapping PMo 12 O 40 3− clusters into pre-synthesized ZIF-67 toward Mo x Co x C particles confined in uniform carbon polyhedrons for efficient overall water splitting

10 of 83 mV (295 mV) for the hydrogen (oxygen) evolution reaction, which is superior to those derived from ZIF-67 and precursors from POMOF-based routes. Our results also indicated that the HER activity is determined by the kind of BTMC, and the activity for the OER is relative to the oxygen-containing species formed during the initial OER test.