Porous NiTiO3/TiO2 nanostructures for photocatatalytic hydrogen evolution
PublisherRoyal Society of Chemistry (RSC)
Rights accessRestricted access - publisher's policy (embargoed until 2020-06-29)
We present a strategy to produce porous NiTiO3/TiO2 nanostructures with excellent photocatalytic activity toward hydrogen generation. In a first step, nickel-doped TiO2 needle bundles were synthesized by a hydrothermal procedure. Through the sintering in air of these nanostructures, porous NiTiO3/TiO2 heterostructured rods were obtained. Alternatively, the annealing in argon of the nickel-doped TiO2 needle bundles resulted in NiOx/TiO2 elongated nanostructures. Porous NiTiO3/TiO2 structures were tested for hydrogen evolution in the presence of ethanol. Such porous heterostructures exhibited superior photocatalytic activity toward hydrogen generation, with hydrogen production rates up to 11.5 mmol h-1 g-1 at room temperature. This excellent performance is related here to the optoelectronic properties and geometric parameters of the material.
CitationXing, C. [et al.]. Porous NiTiO3/TiO2 nanostructures for photocatatalytic hydrogen evolution. "Journal of materials chemistry A", 1 Gener 2019, vol. 7, núm. 28, p. 17053-17059.
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