Green and active hydrogen production from hydrolysis of ammonia borane by using caffeine carbon quantum dot-supported ruthenium catalyst in methanol solvent by hydrothermal treatment

Mehmet Sait İzgi̇, Erhan Onat, Ömer Şahi̇n, Cafer Saka*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Here, carbon quantum dot (CQD) supported Ru nanoparticles from the caffeine in methanol or water by the hydrothermal method were synthesized for the first time to produce hydrogen (H2) by hydrolysis of ammonia borane(NH3BH3) and their catalytic activities were investigated. The chemical compositions and morphology structures of this caffeine carbon dot-supported Ru catalysts were carefully characterized by UV, PL, TEM, FTIR, and ICP/OES analyses. Well-dispersed Ru nanoclusters with ∼1.81 nm particle size on CQD by the hydrothermal method in methanol medium showed very good catalytic performance. The turnover frequency (TOF) obtained for H2 production from the catalytic hydrolysis of 5% NH3BH3 with CQD supported Ru catalyst obtained by the hydrothermal method in methanol and water was found to be 361 and 1895 mol H2 min−1 mol−1, respectively. The activation energies (Ea) for NH3BH3 hydrolysis with the same catalysts were measured as 33.32 and 27.80 kJmol-1, respectively.

Original languageEnglish
Pages (from-to)180-192
Number of pages13
JournalInternational Journal of Hydrogen Energy
Volume51
DOIs
Publication statusPublished - 2 Jan 2024

Bibliographical note

Publisher Copyright:
© 2023 Hydrogen Energy Publications LLC

Funding

The Scientific Research Projects Coordinatorship of Siirt University has supported a part of this study with the project numbered 2022-SİÜFEB-010.

FundersFunder number
Siirt University2022-SİÜFEB-010

    Keywords

    • Caffeine carbon quantum dot
    • Hydrogen
    • Hydrothermal treatment
    • Methanol
    • Ruthenium

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