Hua Sun, Shah Sayyar Ali, Ullah Noor, Ullah Nabi, Yuan Aihua
School of Environmental & Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China.
Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403 Lodz, Poland.
Molecules. 2024 Jun 28;29(13):3082. doi: 10.3390/molecules29133082.
The design of cheap, noble-metal-free, and efficient electrocatalysts for an enhanced hydrogen evolution reaction (HER) to produce hydrogen gas as an energy source from water splitting is an ideal approach. Herein, we report the synthesis of FeO nanorods-NiFeO nanoparticles on cotton fiber cloth (FeO-NiFeO/CF) at a low temperature as an efficient electrocatalyst for HERs. Among the as-prepared samples, the optimal FeO-NiFeO/CF-3 electrocatalyst exhibits good HER performance with an overpotential of 127 mV at a current density of 10 mA cm, small Tafel slope of 44.9 mV dec, and good stability in 1 M KOH alkaline solution. The synergistic effect between FeO nanorods and NiFeO nanoparticles of the heterojunction composite at the heterointerface is mainly responsible for improved HER performance. The CF is an effective substrate for the growth of the FeO-NiFeO nanocomposite and provides conductive channels for the active materials' HER process.
设计廉价、无贵金属且高效的电催化剂以增强析氢反应（HER），从而通过水分解产生氢气作为能源，这是一种理想的方法。在此，我们报道了在棉纤维布（FeO-NiFeO/CF）上低温合成FeO纳米棒-NiFeO纳米颗粒，作为用于析氢反应的高效电催化剂。在所制备的样品中，最优的FeO-NiFeO/CF-3电催化剂表现出良好的析氢反应性能，在电流密度为10 mA cm时过电位为127 mV，塔菲尔斜率小至44.9 mV dec，并且在1 M KOH碱性溶液中具有良好的稳定性。异质结复合材料在异质界面处的FeO纳米棒与NiFeO纳米颗粒之间的协同效应是析氢反应性能提高的主要原因。棉纤维布是FeO-NiFeO纳米复合材料生长的有效基底，并为活性材料的析氢反应过程提供导电通道。
