UiO-66-NH2 Gases evolved after 1h (µmol/g) Error (µmol/g) UiO-66-NH2 Gases evolved after 3h (µmol/g) Error (µmol/g) MIL-88B Gases evolved after 1h (µmol/g) Error (µmol/g) MIL-88B Gases evolved after 3h (µmol/g) Error (µmol/g) UiO-66-NH2@MIL-88B Gases evolved after 1h (µmol/g) Error (µmol/g) UiO-66-NH2@MIL-88B Gases evolved after 3h (µmol/g) Error (µmol/g) H2 production 259,42164 25 435,15327 21 209,10663 24 88 18 353,79366 29 146 28 O2 production 103 25 198 48 399,91471 27 165 31 690,6774 26 284 53