Ultrafine Pt Nanoparticles and Amorphous Nickel Supported on 3D Mesoporous Carbon Derived from Cu-Metal-Organic Framework for Efficient Methanol Oxidation and Nitrophenol Reduction
| Autor: | Qichun Zhang, Jun Zhao, Jian-Rong Li, Xue-Qian Wu, Dongsheng Li, Ya-Pan Wu, Wen-Wen Dong |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Carbonization chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Amorphous solid Catalysis Nitrophenol chemistry.chemical_compound Nickel Chemical engineering chemistry General Materials Science Metal-organic framework Methanol 0210 nano-technology Carbon |
| Zdroj: | ACS applied materialsinterfaces. 10(15) |
| ISSN: | 1944-8252 |
| Popis: | The development of novel strategy to produce new porous carbon materials is extremely important because these materials have wide applications in energy storage/conversion, mixture separation, and catalysis. Herein, for the first time, a novel 3D carbon substrate with hierarchical pores derived from commercially available Cu-MOF (metal-organic framework) (HKUST-1) through carbonization and chemical etching has been employed as the catalysts' support. Highly dispersed Pt nanoparticles and amorphous nickel were evenly dispersed on the surface or embedded within carbon matrix. The corresponding optimal composite catalyst exhibits a high mass-specific peak current of 1195 mA mg-1 Pt and excellent poison resistance capacity ( IF/ IB = 1.58) for methanol oxidation compared to commercial Pt/C (20%). Moreover, both composite catalysts manifest outstanding properties in the reduction of nitrophenol and demonstrate diverse selectivities for 2/3/4-nitrophenol, which can be attributed to different integrated forms between active species and carbon matrix. This attractive route offers broad prospects for the usage of a large number of available MOFs in fabricating functional carbon materials as well as highly active carbon-based electrocatalysts and heterogeneous organic catalysts. |
| Databáze: | OpenAIRE |
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