Boosting the Catalytic Performance of NiMoO4 Nanorods in H2 Generation upon NH3BH3 Hydrolysis via a Reduction Process

作者：Wang, Miaomiao; Zhang, Qing; Wang, Yanlan^*; Liu, Xiang^*

来源：Inorganic Chemistry, 2023, 62(42): 17555-17564.

DOI：10.1021/acs.inorgchem.3c03068

• HYDROGEN GENERATION
• AMMONIA-BORANE
• EFFICIENT CATALYSTS
• NANOPARTICLES
• DEHYDROGENATION
• CARBON
• NANOSPHERES
• EVOLUTION
• OXYGEN
• CU

Although a range of noble metal catalysts, including Ru, Rh, Pd, Pt, and Au, have been developed for efficient H-2 generation upon NH3BH3 hydrolysis at room temperature, this is a highly urgent need for exploring earth-abundant metal nanocatalysts for H-2 generation upon NH3BH3 hydrolysis. Herein, a NaBH4 reduction strategy was developed to boost the catalytic performance of NiMoO4 nanorods in H-2 generation upon NH3BH3 hydrolysis. Indeed, the pristine NiMoO4 nanorods were catalytically inert in NH3BH3 hydrolysis. Significantly, the reduced NiMoO4 nanorods presented excellent catalytic activity in H-2 generation upon NH3BH3 hydrolysis, with a turnover frequency (TOF) of 31.2 L(H-2)center dot g(cat)(-1<bold>)center dot</bold>h(-1). Interestingly, the TOF of NH3BH3 hydrolysis over reduced NiMoO4 nanorods significantly increased from 31.2 to 53.6 L(H-2)<bold>center dot</bold>g(cat)(-1<bold>)center dot</bold>h(-1) under 0.3 M NaOH. The boosting catalytic performance of NiMoO4 nanorods via NaBH4 reduction in H-2 generation might be attributed to the higher content of O-ads and the formation of nickel boride in the reduced NiMoO4 nanorods. In this work, NH3BH3 hydrolysis over reduced NiMoO4 nanorods was not only used for safe H-2 generation but also for its in situ tandem hydrogenation in organic chemistry.