Nickel nanoparticles supported by commercial carbon paper (CP) are prepared by pulsed laser deposition with deposition time of 3, 6, and 12 min as a catalyst for urea electro-oxidation. The surface conditions and the morphologies of the prepared electrodes have been characterized by Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy. Urea electro-oxidation reaction in KOH solution on the Ni/CP electrodes is investigated by cyclic voltammetry and chronoamperometry. The results show that the electrode with less Ni nanoparticle agglomeration shows higher peak current density, which was achieved in the 3 min deposition samples when normalized by electroactive surface areas. However, the highest current normalized by the area of the carbon paper was achieved in the 6 min deposition sample due to the larger quantity of Ni nanoparticles. All the samples show good stability. Our results suggest that the low density, low cost, and environmental friendly CP can be used as support for Ni nanoparticle as a catalyst for urea electro-oxidation. It thus has great potential for many applications involving urea oxidation, such as wastewater treatments.

通过脉冲激光沉积以3、6和12分钟的沉积时间作为尿素电氧化的催化剂，制备了由商用碳纸（CP）支撑的镍纳米颗粒。通过拉曼光谱，扫描电子显微镜和透射电子显微镜表征了所制备电极的表面条件和形态。通过循环伏安法和计时电流法研究了KOH溶液中Ni / CP电极上尿素的电氧化反应。结果表明，Ni纳米颗粒团聚较少的电极显示出较高的峰值电流密度，这在3分钟的沉积样品中通过电活性表面积归一化即可实现。然而，由于镍纳米粒子的数量较大，在6分钟的沉积样品中获得了由复写纸面积归一化的最高电流。所有样品均显示出良好的稳定性。我们的结果表明，低密度，低成本和环境友好的CP可用作镍纳米颗粒的载体，用作尿素电氧化的催化剂。因此，它在涉及尿素氧化的许多应用中具有巨大潜力，例如废水处理。