Abstract
Alkali-activated granulated blast furnace slag-based cementitious material (AGBFSCM) was synthesized and was firstly used as a novel catalyst for synthesis of hydrogen fuel by photocatalytic decomposition of water. X-ray diffraction (XRD) and field emission scanning electron microscope (FESEM) results indicated that there are two kinds of principally mineralogical phases of calcium silicate hydrate (CSH) and calcium aluminate hydrate (CAH) with mean particle size about 50nm. The AGBFSCM specimen showed excellent H2 evolution in amount of 51,697μmol/g under the irradiation of solar simulation source for 6h due to the synergistic effect of mesoporous AGBFSCM framework and natural oxide semiconductors of Fe2O3 and TiO2 existed in AGBFSCM matrix.
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