Issue 10, 2024

Solar heating catalytic formic acid dehydrogenation by graphene-porous foam-supported tungsten nitride nanoparticles

Abstract

The discovery of highly efficient and selective non-precious metal catalysts for the dehydrogenation of formic acid (FA) is crucial for the generation of clean hydrogen (H2). Here, we present a facile method for the synthesis of graphene-porous foam-supported dispersed tungsten nitride nanoparticles (WN/Gr PF), which exhibit significant thermal catalytic activity in FA dehydrogenation, with an H2 yield of 7.88 L g−1 h−1 at 300 °C, suggesting the promising application potential of tungsten-based catalysts in FA dehydrogenation. The stepwise FA dehydrogenation mechanism on the hybrid is investigated via in situ diffuse reflectance infrared Fourier transform spectroscopy. Meanwhile, because this reaction requires a heating temperature, combining a FA dehydrogenation reactor with a solar heating device may be beneficial for industrial applications. Thus, a solar-heating FA dehydrogenation system is constructed, integrating a Ti2O3/Cu-based solar heating apparatus and the hybrid. This system can achieve a temperature of up to 294 °C and an H2 production rate of 7.60 L g−1 h−1 from FA dehydrogenation under 0.4 kW m−2. This rate exceeds those of other efficient catalysts previously reported for photocatalytic FA dehydrogenation. This solar heating catalytic model offers a fossil-energy-free way to practicalize the generation of H2 from FA under solar irradiation.

Graphical abstract: Solar heating catalytic formic acid dehydrogenation by graphene-porous foam-supported tungsten nitride nanoparticles

Supplementary files

Article information

Article type
Research Article
Submitted
05 Mar 2024
Accepted
15 Apr 2024
First published
16 Apr 2024

Inorg. Chem. Front., 2024,11, 2983-2989

Solar heating catalytic formic acid dehydrogenation by graphene-porous foam-supported tungsten nitride nanoparticles

J. Chang, T. Hao, C. Lv, M. Xu, D. Zhang, L. Gao, S. Ning, Y. Li and J. Ye, Inorg. Chem. Front., 2024, 11, 2983 DOI: 10.1039/D4QI00590B

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