کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1656767 | 1517593 | 2016 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Microstructure and electrocatalytic performance of nanoporous gold foils decorated by TiO2 coatings Microstructure and electrocatalytic performance of nanoporous gold foils decorated by TiO2 coatings](/preview/png/1656767.png)
• An amorphous TiO2 coating was sputtered on nanoporous gold (NPG) foils.
• Microstructure and electrocatalytic performance of TiO2@NPG are studied.
• The TiO2 coatings cover the Au ligaments and retain the porous structure.
• The electrocatalytic performance of TiO2@NPG toward glucose is improved.
• The TiO2@NPG structure produces a synergistic effect between TiO2 and Au.
An ultra-thin TiO2 coating was sputtered onto the surface of nanoporous gold (NPG) foil by magnetron sputtering. The microstructure of the TiO2@NPG was studied by scanning electron microscopy, transmission electron microscopy, atomic force microscopy and X-ray photoelectric spectroscopy. The TiO2 coating, characterized by an amorphous structure, covers the Au ligaments, increases the ligament size and decreases the surface roughness. The electrocatalytic activities of TiO2@NPG toward the glucose oxidation in alkaline media were measured by cyclic voltammetry method. The experimental results exhibit that the TiO2@NPG composites present an obvious improvement of electrocatalytic performance compared with the bare NPG. The effect of TiO2 content on the electrocatalytic performance is investigated, and a synergistic effect between TiO2 and NPG is discussed.
TEM image of the TiO2@NPG-20 foil. The FFT patterns on the lower-right and upper-left are corresponding to the Zone 1 and Zone 2, respectively. The inset on the upper-right is the inverse FFT of the Zone 2.Figure optionsDownload high-quality image (186 K)Download as PowerPoint slide
Journal: Surface and Coatings Technology - Volume 286, 25 January 2016, Pages 113–118