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

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

Citing:

DB	Citing
Scopus	12
Elibrary	7
Web of science	14
OpenAlex	16

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