Abdullah Mirzaie Rasol, Anaraki Firooz Azam, Ghorbani Payam
Fuel Cell Research Laboratory, Department of Chemistry, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran, Iran.
Fuel Cell Research Laboratory, Department of Chemistry, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran, Iran; Catalytic Processes and Materials Group, Faculty of Science and Technology, MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands.
Mater Sci Eng C Mater Biol Appl. 2020 Sep;114:111061. doi: 10.1016/j.msec.2020.111061. Epub 2020 May 7.
This study shows the application of carbon supported electrodes containing Pt/NiO nanoparticles to catalyze the electrochemical oxidation of glucose in neutral media. In particular, this study describes the effect of the Pt content and type of carbon (carbon black, expanded graphite, or charcoal active) in the reaction layer on this oxidation process in neutral media. Pt/NiO nanoparticles were synthesized by a simple hydrothermal method, and further characterized by scanning electron microscopy (SEM), X-ray diffraction spectroscopy (XRD), and cyclic voltammetry. These nanoparticles were used to modify carbon electrodes. The effectiveness of these electrodes for electrochemical glucose oxidation was evaluated. The results revealed that the catalytic activity of the electrodes depends on the content of Pt/NiO nanoparticles and the type of carbon. The 10% Pt/NiO with 90% loading (use of activated charcoal in the reaction layer) as optimum electrode indicated good stability after 1200 voltammetry cycles. This modified electrode was highly active for glucose oxidation in neutral media, which could be attributed to the presence of Pt/NiO nanoparticles as catalyst and high surface area of activated charcoal on the electrode surface.
本研究展示了含Pt/NiO纳米颗粒的碳载电极在中性介质中催化葡萄糖电化学氧化的应用。具体而言，本研究描述了反应层中Pt含量和碳的类型（炭黑、膨胀石墨或活性炭）对中性介质中该氧化过程的影响。通过简单的水热法合成了Pt/NiO纳米颗粒，并通过扫描电子显微镜（SEM）、X射线衍射光谱（XRD）和循环伏安法进行了进一步表征。这些纳米颗粒用于修饰碳电极。评估了这些电极对电化学葡萄糖氧化的有效性。结果表明，电极的催化活性取决于Pt/NiO纳米颗粒的含量和碳的类型。10% Pt/NiO与90%负载量（反应层中使用活性炭）作为最佳电极，在1200次伏安循环后显示出良好的稳定性。这种修饰电极在中性介质中对葡萄糖氧化具有高活性，这可归因于作为催化剂的Pt/NiO纳米颗粒的存在以及电极表面活性炭的高表面积。
