"On-Off" Control for On-Demand H2 Release upon Dimethylamineborane Hydrolysis over Ru0.8Ni0.2/MoS2 Nanohybrids

Authors：Li, Qiuyan; Xu, Fuhua; Huang, Wenkai; Wang, Yanlan; Wang, Changlong^*; Liu, Xiang^*

Source：Inorganic Chemistry, 2023, 62(11): 4598-4605.

DOI：10.1021/acs.inorgchem.2c04551

• HYDROGEN EVOLUTION REACTION
• HIGHLY EFFICIENT CATALYST
• FORMIC-ACID DECOMPOSITION
• METAL-ORGANIC FRAMEWORK
• ALLOY NANOPARTICLES
• ROOM-TEMPERATURE
• ACTIVE CATALYST
• CARBON-NANOTUBE
• GRAPHENE OXIDE
• BORANE

In spite of the fact that remarkable developments are achieved in the design and development of novel nanocatalysts for H-2 release upon dimethylamineborane hydrolysis, the development of an "on-off" switch for demand-based H-2 evolution upon dimethylamineborane hydrolysis is still a matter of supreme importance, however. Herein, we synthesized a string of MoS2 nanosheet-supported RuNi bimetallic nanohybrids (RuxNi1-x/ MoS2), by fixation of RuNi nanoparticles at the MoS2 surface, for the H-2 evolution upon the hydrolysis of dimethylamineborane at 30 degrees C. For safely and effectively generating, transporting, and storing H-2 gas, the selective "on-off" switch for on-demand H-2 evolution upon dimethylamineborane hydrolysis over the Ru0.8Ni0.2/MoS2 nanohybrid has been successfully realized by the Zn2+/EDTA-2Na system. In particular, the H-2 evolution is totally switched off by adding Zn(NO3)(2). It seems that Zn2+ ions are attached and anchored at the Ru0.8Ni0.2/MoS2 surface, inhibiting their surface-active sites, leading to the termination of H-2 evolution. Then, the H-2 generation is subsequently reactivated by adding the EDTA-2Na solution because of its excellent coordination ability with Zn2+ ions. This study not only offers a new and efficient RuNi nanocatalyst for dimethylamineborane hydrolysis but also proposes a new method for the demand-based H-2 production.

• Institution
  北京工业大学