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Published in: Rare Metals 10/2023

22-08-2023 | Original Article

Y2O3-functionalized graphene-immobilized Ni–Pt nanoparticles for enhanced hydrous hydrazine and hydrazine borane dehydrogenation

Authors: Qi-Lu Yao, Meng He, Ya-Ru Kong, Tian Gui, Zhang-Hui Lu

Published in: Rare Metals | Issue 10/2023

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Abstract

Developing efficient and highly selective catalyst to promote hydrogen generation from hydrous hydrazine (N2H4·H2O) and hydrazine borane (N2H4BH3) remains a challenging issue for fuel cell-based hydrogen economy. In this work, ultrafine and well-dispersed bimetallic NiPt nanoparticles (3.4 nm) were successfully immobilized on Y2O3-functionalized graphene (Y2O3/rGO) without any surfactant by a simple liquid impregnation approach. It is firstly found that integration of graphene and Y2O3 not only can facilitate the formation of ultrafine NiPt nanoparticles (NPs), but also can effectively modulate the electronic structure of NiPt NPs, thereby boosting the catalytic performance. Compared with NiPt/Y2O3 and NiPt/rGO, the NiPt/Y2O3/rGO nanocomposites (NCs) show remarkable enhanced catalytic efficiency for hydrogen production from N2H4·H2O. In particular, the optimized Ni0.6Pt0.4/Y2O3/rGO NCs display the best catalytic efficiency and 100% H2 selectivity for N2H4·H2O dehydrogenation, providing a turnover frequency (TOF) of 2182 h−1 at 323 K, which is among the highest values ever reported. Moreover, the Ni0.6Pt0.4/Y2O3/rGO NCs also exhibit an excellent catalytic performance (TOF = 3191 h−1) and 100% H2 selectively for N2H4BH3 dehydrogenation at 323 K. The outstanding catalytic results obtained provide more possibilities for the potential applications of N2H4·H2O and N2H4BH3 as promising chemical hydrogen storage materials.

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Appendix
Available only for authorised users
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Metadata
Title
Y2O3-functionalized graphene-immobilized Ni–Pt nanoparticles for enhanced hydrous hydrazine and hydrazine borane dehydrogenation
Authors
Qi-Lu Yao
Meng He
Ya-Ru Kong
Tian Gui
Zhang-Hui Lu
Publication date
22-08-2023
Publisher
Nonferrous Metals Society of China
Published in
Rare Metals / Issue 10/2023
Print ISSN: 1001-0521
Electronic ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-023-02330-z

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