Cu metal-organic framework-derived Cu Nanospheres@Porous carbon/macroporous carbon for electrochemical sensing glucose
| Autor: | Lijuan Xu, Yayun Zhang, Yonghai Song, Yi Xie, Longfei Miao, Li Wang, Canwei Peng |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanostructure Nanocomposite Mechanical Engineering Thermal decomposition Metals and Alloys chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis chemistry Chemical engineering Mechanics of Materials Electrode Materials Chemistry Metal-organic framework 0210 nano-technology Carbon |
| Zdroj: | Journal of Alloys and Compounds. 757:105-111 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2018.05.064 |
| Popis: | Novel Cu nanospheres@porous carbon firmly arrayed on three-dimensional kenaf stem-derived macroporous carbon (3D-KSCs) integrated electrodes were prepared by simple thermolysis of Cu metal-organic framework (HKUST-1) formed on 3D-KSCs for nonenzymatic glucose sensor. The morphology and catalytic activities of as-obtained Cu nanospheres@porous carbon/3D-KSCs were investigated in detail by various techniques. The results confirmed that some octahedral HKUST-1 were intactly transformed into Cu nanospheres@porous carbon nanocomposites and some HKUST-1 were broken into many uniform small Cu nanospheres@porous carbons on the wall of 3D-KSCs upon thermolysis. The spherical nanostructures were consisted of many Cu nanoparticles embedded into 3D porous carbon frameworks. Since the Cu nanospheres@porous carbon/3D-KSCs integrated electrode has hierarchical pores originated from 3D-KSCs and the porous carbon for mass transfer, excellent electrocatalytic activity resulted from hierarchical and uniformly dispersed Cu nanospheres@porous carbon, the nonenzymatic glucose sensor based on Cu nanospheres@ porous carbon/3D-KSC integrated electrode showed an acceptable linear range of 0.15 μM−5.62 mM, a low detection limit of 0.48 μM and with a sensitivity of as high as 28.67 μA mM-1 cm-2. The easy and low-cost preparation, hierarchical nanostructures and good electrocatalytic activity of Cu nanospheres@porous carbon/3D-KSCs rendered it promising candidate for sensors and other applications. |
| Databáze: | OpenAIRE |
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