2021级硕士生章晓磊在SCI一区期刊Inorganic Chemistry Frontiers（Impact factor: 7.0）发表论文“Hydrogen Production from Complete Dehydrogenation of Hydrazine Borane on Carbon-doped TiO2-supported NiCr Catalysts”。

原文链接：https://doi.org/10.1039/D3QI02633G

摘要：

Building efficient, durable, and inexpensive catalysts to promote hydrogen production from hydrazine borane (N2H4BH3) is crucial, but it remains a huge challenge. In this work, we report a simple and green wet chemical method to prepare Cr-modified Ni nanoparticles (NPs) immobilized on carbon doped mesoporous TiO2 (CTO). Three different morphologies (nanospheres (NS), nanoflakes (NF), and nanorods (NR)) of CTO are synthesized using the ethanol and/or glycerol in the hydrothermal process. It is found that the CTO morphology have a significant impact on the size, dispersion, and electronic structure of Ni-Cr NPs. Clearly, compared with CTO-NS and CTO-NR, CTO-NF-supported Ni-Cr NPs exhibited 100% H2 selectivity and the best catalytic performance for hydrogen production from N2H4BH3. The turnover frequency (TOF) value of Ni-Cr/CTO-NF reach 555 h-1 at 323 K, which exceeds almost all reported noble-metal-free catalysts. More importantly, the catalytic performance of Ni-Cr/CTO-NF for N2H4BH3 dehydrogenation did not decrease significantly after 20 runs. Its ultra-high catalytic activity and significant durability are attributed to the small electron rich Ni-Cr NPs caused by the unique nanoflake structure of CTO-NF. This work provides ideas for constructing catalysts with different structures and lays the foundation for the development of efficient and cheap hydrogen production catalysts.