Layer-by-layer fabrication of polydopamine functionalized carbon nanotubes-ceria-palladium nanohybrids for boosting ethanol electrooxidation
| Autor: | Jun Jin, Qiaolan Zhang, Hai Zou, Jiantai Ma, Honglei Yang, Zishuo Song, Shuwen Li |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Layer by layer Atomic emission spectroscopy Energy Engineering and Power Technology chemistry.chemical_element Nanotechnology 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences 0104 chemical sciences law.invention Catalysis Fuel Technology X-ray photoelectron spectroscopy chemistry Transmission electron microscopy law 0210 nano-technology Palladium |
| Zdroj: | International Journal of Hydrogen Energy. 42:13209-13216 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2017.04.049 |
| Popis: | The polydopamine functionalized carbon nanotubes-ceria-palladium nanohybrids (Pd-CeO2−x/PDA-CNTs) is fabricated through layer-by-layer synthetic strategy, aiming to integrate the functions of support (PDA-CNTs), metal oxides (CeO2−x) and Pd nanoparticles (NPs). Various instrumental techniques including transmission electron microscopy (TEM), X-ray diffraction (XRD), inductive coupled plasma atomic emission spectrometer (ICP-AES) and X-ray photoelectron spectroscopy (XPS) not only confirm the formation of nanohybrids but also provide the morphology, structure and composition properties of the as-prepared catalysts. As an anode catalyst towards ethanol electrooxidation reaction (EOR) in direct ethanol fuel cells, the Pd-CeO2−x/PDA-CNTs reveals promoted electrocatalytic performance, accelerated kinetics and enhanced stability. Based on the control experiments and related reports, the synergistic action of PDA, CeO2−x and Pd NPs is the key factor for the superior electrochemical behavior of Pd-CeO2−x/PDA-CNTs, which originates from the integration of various components through layer-by-layer synthetic strategy. |
| Databáze: | OpenAIRE |
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