Abstract
We report the successful preparation of an amorphous nickel-modified 2D CaTiO3 photocatalyst via a methanol co-precipitation method. The Ni was operando constructed into the CaTiO3 surface, leading to improved separation of photoinduced charge carriers and enhanced photocatalytic hydrogen evolution reaction (HER) under solar light irradiation. The optimized photocatalyst yields a high HER activity of 1.7 mmol/g/h in the presence of glycerol as a hole scavenger. Our findings suggest that the amorphous form of the catalyst and the loading of Ni contribute to the improved photocatalytic activity. Our results demonstrate for the first time that amorphous 2D CaTiO3 with operando-constructed nickel can produce sacrificial hydrogen, highlighting the potential of amorphous materials for sustainable energy conversion applications.
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