Gamma-ray-irradiated construction of CuCo-based nanocomposites for attractive hydrogen production and tandem hydrogenation
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY(2023)
摘要
Nitroarenes are important chemicals but display toxity to environment and organisms. In the present work, non-precious bicomponent CuCo-based nanocomposites (CuCo2O4/CuO) prepared with the aid of gamma(γ)-ray-irradiation were utilized for hydrogen production from ammonia borane (AB) hydrolysis and tandem hydrogenation of nitroarenes. The γ-ray-irradiation remarkably boosted the catalytic performance for the AB dehydrogenation and the hydrogenation of nitroarenes. Hydrogen generation rate (HGR) for the CuCo2O4/CuO catalyst reached 856.3 mL min−1·gcat−1, which was approximately two-fold than that of the catalyst prepared by conventional method (only 397.1 mL min−1·gcat−1). Meanwhile, this irradiation-induced catalyst also showed excellent performance for the hydrogenation of screened nitroarenes with 100% yield of the corresponding amines. The CuCo2O4/CuO catalyst exhibited high reusability with ∼90% remained activity of the initial one after six runs. The bicomponent CuCo2O4/CuO exhibited positive hydrogen spillover and synergistic effects contributing to the considerable activity improvement, which is beneficial to the detoxication, conversion and utilization of poison nitroarenes.
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关键词
Gamma-irradiation synthesis,CuCo-based nanocomposites,Dehydrogenation,Ammonia borane,In-situ hydrogenation,Nitroaromatics
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