Anchoring ultrafine RhNi nanoparticles on titanium carbides/manganese oxide as an efficient catalyst for hydrogen generation from hydrous hydrazine

作者：Yin, Bing; Wang, Qingtao; Liu, Tong^*; Gao, Guanhui^*

来源：New Journal of Chemistry, 2018, 42(24): 20001-20006.

DOI：10.1039/c8nj04766a

• ROOM-TEMPERATURE
• DECOMPOSITION
• GRAPHENE
• DEHYDROGENATION
• CARBON
• IMMOBILIZATION
• NANOCATALYST
• PERFORMANCE
• NANOSHEETS
• EVOLUTION

The development of a cost-effective catalyst with high activity and 100% selectivity for hydrogen production from hydrous hydrazine under mild conditions is desirable for fuel cell applications. In this work, a series of RhNi/MnOx-MXene NPs are prepared using a simple one-step wet-chemical method. The synthesized RhNi/MXene catalysts are characterized by XPS, TEM, SEM and ICP-AES. The ultrafine RhNi nanoparticles of 2.8 nm size are well dispersed on the bi-support (MnOx-MXene) surface and avoid the aggregation of RhNi nanoparticles. This unique nanocatalytic system shows an active performance toward N2H4 center dot H2O decomposition under mild conditions. The optimized Rh0.7Ni0.3/MnOx-MXene NPs exhibit excellent catalytic properties, and the corresponding TOF value can reach 1101.9 h(-1) with 100% H-2 selectivity under mild conditions. The remarkable catalytic performance is attributed to the mild interactions of the bi-support to the NPs, which not only stabilizes the NPs to maintain good dispersion but also leaves sufficient surface active sites to facilitate the catalytic reaction.

• 出版日期2018-12-21
• 单位青岛科技大学; 青岛理工大学