Wang Hongjing, Liang Yuqin, Liu Songliang, Yu Hongjie, Deng Kai, Xu You, Li Xiaonian, Wang Ziqiang, Wang Liang
State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
Inorg Chem. 2023 Sep 4;62(35):14477-14483. doi: 10.1021/acs.inorgchem.3c02487. Epub 2023 Aug 23.
The research on high-efficiency two-dimensional (2D) catalytic materials for the small-molecule oxidation-assisted hydrogen evolution reaction (HER) is prospective for efficient hydrogen production. Herein, we report heterostructured Pt/Rh metallene with Pt nanoparticles (NPs) uniformly anchored on Rh metallene for the HER and ethylene glycol oxidation reaction (EGOR). The ultrathin sheet structure of the Pt/Rh metallene offers high surface areas and sufficient active sites. More importantly, the Pt/Rh heterostructure can optimize catalytic active centers and adjust electronic structure. Thus, Pt/Rh metallene exhibits superior electrocatalytic HER activity with a low overpotential of 28 mV in 1 M KOH at 10 mA cm and EGOR activity with a specific activity of 8.39 mA cm in 1 M KOH with 3 M EG, along with outstanding CO tolerance. In a two-electrode system, Pt/Rh metallene requires a low potential of 0.51 V for stable and efficient hydrogen production at 10 mA cm in 1 M KOH + 3 M EG, with the simultaneous production of high-value-added products. The job proposes an attractive strategy for the synthesis of 0D/2D metallene toward simultaneous energy-saving hydrogen production and chemical update.
用于小分子氧化辅助析氢反应（HER）的高效二维（2D）催化材料的研究对于高效制氢具有广阔前景。在此，我们报道了一种异质结构的Pt/Rh金属烯，其中Pt纳米颗粒（NPs）均匀地锚定在Rh金属烯上，用于HER和乙二醇氧化反应（EGOR）。Pt/Rh金属烯的超薄片状结构提供了高表面积和足够的活性位点。更重要的是，Pt/Rh异质结构可以优化催化活性中心并调整电子结构。因此，Pt/Rh金属烯在1 M KOH中，电流密度为10 mA cm时，具有28 mV的低过电位，表现出优异的电催化HER活性；在1 M KOH + 3 M EG中，比活性为8.39 mA cm，具有EGOR活性，同时具有出色的CO耐受性。在两电极系统中，Pt/Rh金属烯在1 M KOH + 3 M EG中，电流密度为10 mA cm时，需要0.51 V的低电位来稳定高效地制氢，同时生产高附加值产品。这项工作为合成用于同时节能制氢和化学升级的0D/2D金属烯提出了一种有吸引力的策略。
