Ibrahim M, Wei M M, Deydier E, Manoury E, Poli R, Lecante P, Philippot K
CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France.
Dalton Trans. 2019 May 21;48(20):6777-6786. doi: 10.1039/c9dt01006h.
A series of ferrocenylphosphine-stabilized rhodium nanoparticles has been prepared in one pot from the organometallic [Rh(η3-C3H5)3] precursor. This complex has been decomposed by hydrogen treatment (3 bar) in dichloromethane in the presence of five different ferrocene-based phosphine ligands. Very small rhodium nanoparticles in the size range of 1.1-1.7 nm have been obtained. These nanoparticles have shown activity in a model catalytic reaction, namely the hydrogenation of styrene. These results evidence that the metal surface is not blocked despite the steric bulk of the stabilizing ligands. Moreover, certain selectivity has been observed depending on the ligand employed. To the best of our knowledge, such a type of compound has not yet been used for stabilizing metal nanoparticles and our findings highlight the interest to do so.
已通过一锅法由有机金属前驱体[Rh(η3-C3H5)3]制备了一系列二茂铁基膦稳定的铑纳米颗粒。在五种不同的基于二茂铁的膦配体存在下，该配合物在二氯甲烷中经氢气处理（3巴）分解。已获得尺寸范围为1.1 - 1.7纳米的非常小的铑纳米颗粒。这些纳米颗粒在模型催化反应即苯乙烯氢化反应中表现出活性。这些结果表明，尽管稳定配体具有较大的空间位阻，但金属表面并未被阻断。此外，根据所使用的配体观察到了一定的选择性。据我们所知，此类化合物尚未用于稳定金属纳米颗粒，我们的发现突出了这样做的意义。
