Composition-Dependent Morphology of Bi- and Trimetallic Phosphides: Construction of Amorphous Pd–Cu–Ni–P Nanoparticles as a Selective and Versatile Catalyst
| Autor: | Qiang Chen, Ming Zhao, Ning Zhong, Zinan Kang, Naoki Asao, Yuan Ji, Wen-Jie Jiang, Mengyue Wang |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Amorphous metal Inorganic chemistry Nanoparticle chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Heterogeneous catalysis 01 natural sciences 0104 chemical sciences Catalysis Nanomaterials Amorphous solid chemistry Alcohol oxidation General Materials Science 0210 nano-technology Palladium |
| Zdroj: | ACS Applied Materials & Interfaces. 9:34804-34811 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Amorphous materials have been widely researched in heterogeneous catalysis and for next-generation batteries. However, the well-defined production of high-quality (e.g., monodisperse and high surface area) amorphous alloy nanomaterials has rarely been reported. In this work, we investigated the correlations among the composition, morphology, and catalysis of various Pd-M-P nanoparticles (NPs) (M = Cu or Ni), which indicated that less Cu (≤20 atom %) was necessary for the formation of an amorphous morphology. The amorphous Pd-Cu-Ni-P NPs were fabricated with a controllable size and characterized carefully, which show excellent selective catalysis in the semihydrogenation of alkynes, hydrogenation of quinoline, and oxidation of primary alcohols. The uniqueness of the catalytic performance was confirmed by control experiments with monometallic Pd, amorphous Pd-Ni-P NPs, crystalline Pd-Cu-P NPs, and a crystalline counterpart of Pd-Cu-Ni-P catalyst. The catalytic selectivity likely arose from improved Pd-M (M = Cu or Ni) synergistic effects in the amorphous phase and the electron deficiency of Pd. The model reactions proceeded under H |
| Databáze: | OpenAIRE |
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