TiO2-Based Photocatalysts for Controllable Hydrogen Evolution from Ammonia Borane Full article
| Journal |
Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308 |
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| Output data | Year: 2021, Volume: 379, Pages: 149-158 Pages count : 10 DOI: 10.1016/j.cattod.2020.04.070 | ||
| Tags | H2 generation; NH3BH3; TiO2; Titanate; Ag0NPs; Photocatalytic hydrolysis; Photocatalytic hydrothermolysis | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0015 |
Abstract:
Results on the photocatalytic hydrolysis and hydrothermolysis of NH3BH3 in the presence of the titania-based photocatalysts (TiO2 Hombifine N, samples obtained by its hydrothermal treatment in KOH and after modification by colloidal silver) are presented. It was shown that in the hydrolysis of 0.3 M solution of NH3BH3 at 40 °C under UV irradiation (λ = 365 nm) the highest activity has been achieved with the photocatalyst synthesized at 120 °C in 10 M КOH solution. In this sample, the nanodispersed particles of the unreacted anatase get in contact with titanate nanorods. Modification of the titania-based photocatalysts by colloidal silver allowed the quantum efficiency under UV irradiation to be increased and the hydrogen formation became possible under visible light (λ = 450 nm). It was established that the use of low concentration of the supported silver (0.06 wt.%) makes possible to control the H2 generation by the use of irradiation. Photocatalytic hydrothermolysis of NH3BH3 under heating (90 °C) and UV irradiation of the reaction mixture (NH3BH3+H2O + Ag/TiO2) with the molar ratio H2O/NH3BH3 = 1.24 has been carried out for the first time. High values of the rate of generation and the yield of hydrogen have been achieved.
Cite:
Simagina V.I.
, Komova O.V.
, Ozerova A.M.
, Netskina O.V.
, Odegova G.V.
, Kayl N.L.
, Filippov T.N.
TiO2-Based Photocatalysts for Controllable Hydrogen Evolution from Ammonia Borane
Catalysis Today. 2021. V.379. P.149-158. DOI: 10.1016/j.cattod.2020.04.070 WOS Scopus РИНЦ AN OpenAlex
TiO2-Based Photocatalysts for Controllable Hydrogen Evolution from Ammonia Borane
Catalysis Today. 2021. V.379. P.149-158. DOI: 10.1016/j.cattod.2020.04.070 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Jan 9, 2020 |
| Accepted: | Apr 30, 2020 |
| Published online: | May 6, 2020 |
| Published print: | Nov 1, 2021 |
Identifiers:
| Web of science: | WOS:000687319400006 |
| Scopus: | 2-s2.0-85084480143 |
| Elibrary: | 43284124 |
| Chemical Abstracts: | 2020:946375 |
| OpenAlex: | W3021242546 |