Electroless decoration of macroscale foam with nickel nano-spikes: A scalable route toward efficient catalyst electrodes
| Autor: | Joachim Brötz, Shouxin Liu, Michael Duerrschnabel, Jia Tan, Wolfgang Ensinger, Hans-Joachim Kleebe, Sandra Schaefer, Xin Zhao, Leopoldo Molina-Luna, Falk Muench |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis lcsh:Chemistry Metal Nickel lcsh:Industrial electrochemistry lcsh:QD1-999 chemistry visual_art Mass transfer Nano Electrode Electrochemistry visual_art.visual_art_medium Sawdust 0210 nano-technology Porosity lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 65, Iss, Pp 39-43 (2016) |
| ISSN: | 1388-2481 |
| Popis: | Electroless deposition of anisotropic catalyst layers is introduced as an efficient approach to fabricate high-performing multiscale electrode architectures. In the present study, a biomass-derived, solidified foam is coated with nickel nano-spikes. This results in an amplification of the surface area and an introduction of catalytic functionality, while the favorable mass transfer properties of the porous support are retained. Both the substrate and the metal film are produced using simple, readily scalable processes. The support is prepared from liquefied sawdust by self-foaming, and nickel deposition is performed by immersion in a hydrazine-based plating bath. The favorable functional properties of the nickel-coated foam are demonstrated in enzyme-free glucose sensing. Due to the large surface area and the high activity of the nickel nanofilm, an outstanding sensitivity of 8.1 mA mM−1 cm−2 and a low detection limit of 60 nM were achieved. Keywords: Anisotropic nanoparticles, Electrode nanostructuring, Electroless plating, Biomass conversion, Enzyme-free glucose sensing |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect