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Hydrolysis of NH3BH3 and NaBH4 by graphene quantum dots-transition metal nanoparticles for highly effective hydrogen evolution.
- Source :
-
International Journal of Hydrogen Energy . Jan2021, Vol. 46 Issue 1, p796-805. 10p. - Publication Year :
- 2021
-
Abstract
- Recently, effective hydrogen (H 2) evolution upon hydrolysis of different hydrogen storage materials has received much attention. Herein, graphene quantum dots-transition metal nanoparticles (GQDs-TMNPs), with high dispersibility and activity, have been successfully applied in the hydrolysis of both NH 3 BH 3 (AB) and NaBH 4 for the first time. GQDs-RhNPs, GQDs-RuNPs, and GQDs-PtNPs are very effective in the hydrolysis of AB and the turnover frequencies (TOFs) can achieve to as high as 656, 384, and 281 mol H2 ·mol cat −1 min−1, respectively. Moreover, the synergistic effect between GQDs and TMNPs is explored, and the mechanisms of catalytic hydrolysis of AB and NaBH 4 by GQDs-TMNPs are proposed. This work not only paves the way for the development of GQDs-TMNPs nanocatalysts for the different hydrogen storage materials, but also further advances the understanding of the synergistic effects between GQDs and TMNPs. Image 1 • GQDs-TMNPs have been firstly applied in the hydrolysis of both AB and NaBH 4. • RhNPs, PtNPs and RuNPs are very efficient for H 2 evolution upon hydrolysis of AB and NaBH 4. • GQDs-TMNPs have been successfully recycled 5 times without significant decrease. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 46
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 147792233
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2020.09.153