Wang Miaomiao, Zhang Qing, Wang Yanlan, Liu Xiang
Department of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China.
Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China.
Inorg Chem. 2023 Oct 23;62(42):17555-17564. doi: 10.1021/acs.inorgchem.3c03068. Epub 2023 Oct 12.
Although a range of noble metal catalysts, including Ru, Rh, Pd, Pt, and Au, have been developed for efficient H generation upon NHBH hydrolysis at room temperature, this is a highly urgent need for exploring earth-abundant metal nanocatalysts for H generation upon NHBH hydrolysis. Herein, a NaBH reduction strategy was developed to boost the catalytic performance of NiMoO nanorods in H generation upon NHBH hydrolysis. Indeed, the pristine NiMoO nanorods were catalytically inert in NHBH hydrolysis. Significantly, the reduced NiMoO nanorods presented excellent catalytic activity in H generation upon NHBH hydrolysis, with a turnover frequency (TOF) of 31.2 L(H)gh. Interestingly, the TOF of NHBH hydrolysis over reduced NiMoO nanorods significantly increased from 31.2 to 53.6 L(H)gh under 0.3 M NaOH. The boosting catalytic performance of NiMoO nanorods via NaBH reduction in H generation might be attributed to the higher content of O and the formation of nickel boride in the reduced NiMoO nanorods. In this work, NHBH hydrolysis over reduced NiMoO nanorods was not only used for safe H generation but also for its in situ tandem hydrogenation in organic chemistry.
尽管已经开发了一系列贵金属催化剂，包括钌（Ru）、铑（Rh）、钯（Pd）、铂（Pt）和金（Au），用于在室温下通过硼氢化钠（NHBH）水解高效产氢，但迫切需要探索储量丰富的金属纳米催化剂用于通过NHBH水解产氢。在此，开发了一种硼氢化钠还原策略来提高钼酸镍（NiMoO）纳米棒在NHBH水解产氢中的催化性能。实际上，原始的NiMoO纳米棒在NHBH水解中催化惰性。值得注意的是，还原后的NiMoO纳米棒在NHBH水解产氢中表现出优异的催化活性，周转频率（TOF）为31.2 L(H)gh。有趣的是，在0.3 M氢氧化钠存在下，还原后的NiMoO纳米棒上NHBH水解的TOF从31.2显著增加到53.6 L(H)gh。通过硼氢化钠还原提高NiMoO纳米棒在产氢中的催化性能可能归因于还原后的NiMoO纳米棒中更高的氧含量和硼化镍的形成。在这项工作中，还原后的NiMoO纳米棒上的NHBH水解不仅用于安全产氢，还用于有机化学中的原位串联氢化反应。
