Acta Chimica Sinica ›› 2023, Vol. 81 ›› Issue (11): 1471-1477.DOI: 10.6023/A23050202 Previous Articles     Next Articles

Special Issue: 庆祝《化学学报》创刊90周年合辑

Article

金属性Ni3N纳米粒子的制备与乙二醇电氧化性能

杨镇鸿, 干晓娟, 王书哲, 段君元, 翟天佑, 刘友文*()   

  1. 华中科技大学材料科学与工程学院 材料成形与模具技术全国重点实验室 武汉 430074
  • 投稿日期:2023-05-05 发布日期:2023-08-14
  • 作者简介:
    共同第一作者
    庆祝《化学学报》创刊90周年.
  • 基金资助:
    大学生创新创业训练计划(S202210487007); 国家自然科学基金(22071069)

Preparation of Metallic Ni3N Nanoparticles and Its Electrooxidation Performance for Ethylene Glycol

Zhenhong Yang, Xiaojuan Gan, Shuzhe Wang, Junyuan Duan, Tianyou Zhai, Youwen Liu()   

  1. State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074
  • Received:2023-05-05 Published:2023-08-14
  • Contact: *E-mail: ywliu@hust.edu.cn
  • About author:
    These authors contributed equally to this work
    Dedicated to the 90th anniversary of Acta Chimica Sinica.
  • Supported by:
    College Student Innovation and Entrepreneurship Training Program(S202210487007); National Natural Science Foundation of China(22071069)

Coupled small molecule electrocatalytic oxidation reaction can not only reduce anode overpotential, improve hydrogen evolution reaction (HER) efficiency, but also produce high value-added chemicals, which is an effective strategy to improve the performance of electrocatalytic water splitting. The development of non-noble metal based electrocatalysts with high conductivity and low oxidation potential is the key issue. Herein, Ni3N nanoparticles (Ni3N-NPs) with low oxidation potential and high conductivity were prepared by annealing and nitriding Ni(OH)2 nanosheets precursors. Compared with Ni(OH)2, Ni3N-NPs has a smaller Faraday resistance, a lower oxidation potential, a smaller Tafel slope (29 mV•dec–1), and exhibits the better electrocatalytic oxidation performance towards ethylene glycol (EG). At 1.36 V, the Faraday efficiency of electrocatalytic EG oxidation to formate reached 91.16%. The structure of Ni3N-NPs before and after the electrocatalytic oxidation reaction was characterized in detail by X-ray diffractometer (XRD), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). It was found that in the electrocatalytic EG oxidation process, the surface of Ni3N-NPs was oxidized into NiOOH, while EG underwent dehydrogenation and oxidation to form formic acid on the catalyst surface, and the NiOOH was synchronously reduced by H and converted into Ni(OH)2. In addition, Ni3N-NPs has good universality for electrocatalytic oxidation of small organic molecules.

Key words: electrocatalysis, water splitting, ethylene glycol, Ni(OH)2, Ni3N