Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel
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2019
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© 2019 Elsevier Ltd and Techna Group S.r.l.
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Nickel-modified titanate/TiO2 catalysts were prepared by deposition of nickel ions onto hydrothermally prepared titanate supports, followed by hydrogen temperature-programmed reduction. Two different nickel precursors (hydroxide and carbonate) were used to tune reducibility and to vary the crystal phase structure of the final catalysts. The precursor reducibility and functional properties of the final catalysts were investigated systematically using various characterisation techniques. The results revealed a more facile reduction of the hydroxide precursor compared to its carbonate counterpart. Moreover, it was found that the formation of the anatase phase was favoured by the use of the hydroxide precipitation agent. The photocatalytic activity towards hydrogen production of the prepared catalysts was evaluated in the presence of 2-propanol under simulated solar light irradiation. A thorough study of the photocatalytic performance of the synthesised catalysts was conducted as a functio...n of the precipitation agent used and the reduction temperature applied. The catalyst with dominant anatase crystal phase displayed the highest photocatalytic activity with a maximum H2 production rate of 1040 μmol h−1 g−1, this being more than four times higher than that of its carbonate counterpart. The catalysts with titanate structure showed similar activity, independent of the precipitation method used. The nanotubular structure was found to be the dominant factor in the stability of photocatalysts under long-run working conditions. © 2019 Elsevier Ltd and Techna Group S.r.l.
Keywords:
Powders: chemical preparation / Nanocomposites / Titanium dioxide (TiO2) / Solar hydrogen productionSource:
Ceramics International, 2019, 45, 15, 19447-19455Funding / projects:
- Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45001)
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Directed synthesis, structure and properties of multifunctional materials (RS-MESTD-Basic Research (BR or ON)-172057)
DOI: 10.1016/j.ceramint.2019.06.200
ISSN: 0272-8842; 1873-3956
WoS: 000483454200158
Scopus: 2-s2.0-85067699117
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https://linkinghub.elsevier.com/retrieve/pii/S0272884219317018https://vinar.vin.bg.ac.rs/handle/123456789/8354
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VinčaTY - JOUR AU - Dostanić, Jasmina AU - Lončarević, Davor AU - Pavlović, Vladimir B. AU - Papan, Jelena AU - Nedeljković, Jovan PY - 2019 UR - https://linkinghub.elsevier.com/retrieve/pii/S0272884219317018 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8354 AB - Nickel-modified titanate/TiO2 catalysts were prepared by deposition of nickel ions onto hydrothermally prepared titanate supports, followed by hydrogen temperature-programmed reduction. Two different nickel precursors (hydroxide and carbonate) were used to tune reducibility and to vary the crystal phase structure of the final catalysts. The precursor reducibility and functional properties of the final catalysts were investigated systematically using various characterisation techniques. The results revealed a more facile reduction of the hydroxide precursor compared to its carbonate counterpart. Moreover, it was found that the formation of the anatase phase was favoured by the use of the hydroxide precipitation agent. The photocatalytic activity towards hydrogen production of the prepared catalysts was evaluated in the presence of 2-propanol under simulated solar light irradiation. A thorough study of the photocatalytic performance of the synthesised catalysts was conducted as a function of the precipitation agent used and the reduction temperature applied. The catalyst with dominant anatase crystal phase displayed the highest photocatalytic activity with a maximum H2 production rate of 1040 μmol h−1 g−1, this being more than four times higher than that of its carbonate counterpart. The catalysts with titanate structure showed similar activity, independent of the precipitation method used. The nanotubular structure was found to be the dominant factor in the stability of photocatalysts under long-run working conditions. © 2019 Elsevier Ltd and Techna Group S.r.l. T2 - Ceramics International T1 - Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel VL - 45 IS - 15 SP - 19447 EP - 19455 DO - 10.1016/j.ceramint.2019.06.200 ER -
@article{ author = "Dostanić, Jasmina and Lončarević, Davor and Pavlović, Vladimir B. and Papan, Jelena and Nedeljković, Jovan", year = "2019", abstract = "Nickel-modified titanate/TiO2 catalysts were prepared by deposition of nickel ions onto hydrothermally prepared titanate supports, followed by hydrogen temperature-programmed reduction. Two different nickel precursors (hydroxide and carbonate) were used to tune reducibility and to vary the crystal phase structure of the final catalysts. The precursor reducibility and functional properties of the final catalysts were investigated systematically using various characterisation techniques. The results revealed a more facile reduction of the hydroxide precursor compared to its carbonate counterpart. Moreover, it was found that the formation of the anatase phase was favoured by the use of the hydroxide precipitation agent. The photocatalytic activity towards hydrogen production of the prepared catalysts was evaluated in the presence of 2-propanol under simulated solar light irradiation. A thorough study of the photocatalytic performance of the synthesised catalysts was conducted as a function of the precipitation agent used and the reduction temperature applied. The catalyst with dominant anatase crystal phase displayed the highest photocatalytic activity with a maximum H2 production rate of 1040 μmol h−1 g−1, this being more than four times higher than that of its carbonate counterpart. The catalysts with titanate structure showed similar activity, independent of the precipitation method used. The nanotubular structure was found to be the dominant factor in the stability of photocatalysts under long-run working conditions. © 2019 Elsevier Ltd and Techna Group S.r.l.", journal = "Ceramics International", title = "Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel", volume = "45", number = "15", pages = "19447-19455", doi = "10.1016/j.ceramint.2019.06.200" }
Dostanić, J., Lončarević, D., Pavlović, V. B., Papan, J.,& Nedeljković, J.. (2019). Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel. in Ceramics International, 45(15), 19447-19455. https://doi.org/10.1016/j.ceramint.2019.06.200
Dostanić J, Lončarević D, Pavlović VB, Papan J, Nedeljković J. Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel. in Ceramics International. 2019;45(15):19447-19455. doi:10.1016/j.ceramint.2019.06.200 .
Dostanić, Jasmina, Lončarević, Davor, Pavlović, Vladimir B., Papan, Jelena, Nedeljković, Jovan, "Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel" in Ceramics International, 45, no. 15 (2019):19447-19455, https://doi.org/10.1016/j.ceramint.2019.06.200 . .