赵学波教授研究团队的一项最新研究成果在美国化学会旗下的ACS Applied Materials & Interfaces期刊上正式发表。题目是：

In Situ Synthesis Strategy for Hierarchically Porous Ni₂P Polyhedrons from MOFs Templates with Enhanced Electrochemical Properties for Hydrogen Evolution；

http://pubs.acs.org/doi/abs/10.1021/acsami.7b01037；

DOI: 10.1021/acsami.7b01037。

该论文的第一作者是赵学波教授的博二研究生闫理停，其他作者包括代鹏程副教授、王颖（博三）、顾鑫副教授、李良军副教授、曹磊（博一），赵学波教授为该论文的通讯作者。该工作以镍基MOF-74为前驱体，采用原位磷化方法制备出具有梯级孔结构的纯相Ni₂P多面体。这种多面体很好地保留了母体MOF的形貌，比表面积高，活性组分分散性能好，显示出非常好的析氢活性，为电解水制氢提供了具有工业应用前景的电极材料选项。

ABSTRACT: The development of highly active and stable noble metal-free electrocatalysts of hydrogen evolution reaction (HER) under both acidic and basic conditions for renewable energy conversion techniques is of great significance. Herein, a practical in situ synthesis strategy for a three-dimensional Ni₂P polyhedron with a hierarchically porous structure was presented, which was efficiently obtained from a nickel centered metal-organic frameworks (MOF-74-Ni) by direct low-temperature phosphorization. The as-prepared Ni₂P polyhedron showed a high BET

surface area (175.0 m²·g^-1), hierarchically porous property, and outstanding metal dispersion, which well inherited the morphology and porosity of its MOF precursor. Compared with Ni₂P particles obtained from a nonporous precursor, the as-prepared Ni₂P polyhedron used as electrocatalyst exhibited excellent electrocatalytic performance toward the HER, with a low

overpotential of 158 mV to produce the cathodic current density of 10 mA cm^-2. A small Tafel slope of 73 mV per decade is obtained for Ni₂P polyhedron, which revealed a Volmer-Heyrovsky mechanism during the HER. In addition, benefiting from the structural stability, the porous Ni₂P polyhedron used as a electrocatalyst showed satisfactory long-term durability for the HER in acidic

media.