催化学报 ›› 2021, Vol. 42 ›› Issue (8): 1379-1386.DOI: 10.1016/S1872-2067(20)63601-4

• 论文 • 上一篇    下一篇

原位合成氧化镍硼/石墨炔杂化材料用于提高光/电催化产氢性能

殷学鹏, 罗舒文, 唐上峰, 卢秀利*, 鲁统部#   

  1. 天津理工大学材料科学与工程学院新能源材料与低碳技术研究院, 材料微结构教育部国际合作联合实验室, 天津300384
    天津理工大学材料科学与工程学院新能源材料与低碳技术研究院, 材料微结构教育部国际合作联合实验室, 天津 300384
  • 收稿日期:2020-01-06 接受日期:2020-01-06 出版日期:2021-08-18 发布日期:2020-11-23
  • 通讯作者: 卢秀利,鲁统部
  • 作者简介:#. lutongbu@tjut.edu.cn
    *. 电话/传真: (022)60215704; 电子信箱: luxiuli@email.tjut.edu.cn
    第一联系人:

    共同第一作者

  • 基金资助:
    天津市教委科研计划项目(2018KJ129)

In situ synthesis of a nickel boron oxide/graphdiyne hybrid for enhanced photo/electrocatalytic H2 evolution

Xue-Peng Yin, Shu-Wen Luo, Shang-Feng Tang, Xiu-Li Lu*, Tong-Bu Lu#   

  1. MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Material Science & Engineering, Tianjin University of Technology, Tianjin 300384, China
  • Received:2020-01-06 Accepted:2020-01-06 Online:2021-08-18 Published:2020-11-23
  • Contact: Xiu-Li Lu,Tong-Bu Lu
  • About author:#E-mail: lutongbu@tjut.edu.cn
    *. Tel/Fax: +86-22-60215704; E-mail: luxiuli@email.tjut.edu.cn
    First author contact:

    These authors contributed equally to this work

  • Supported by:
    This work was supported by the Science and Technology Development Fund of Tianjin Education Commission for Higher Education(2018KJ129)

摘要:

当今世界面临严峻的能源紧缺和环境污染问题, 发展高效无污染的清洁能源替代传统化石能源成为近几十年科研工作者的研究热点. 其中, 氢能由于具有高燃烧值和产物无污染等优点成为理想的替代能源. 光/电催化水分解产生氢气是最有效的制氢方法之一. 目前, 高活性的产氢催化剂仍以贵金属为主, 但贵金属价格高昂和稀缺性等限制了其大规模应用, 因此, 开发和设计廉价、高效的非贵金属产氢催化剂变得尤为重要. 为了提高非贵金属催化剂的催化活性, 基于非贵金属的复合材料的构建被广泛研究. 例如, 通过非贵金属和碳材料的复合, 能够提高比表面积和电子传输速率, 优化活性位点的电子结构, 从而提高催化活性.
石墨炔(GDY)作为一种新兴碳材料, 由sp 2-和sp-杂化碳共同组成. 由于GDY具有高度π共轭结构, 大的比表面积和独特的双炔键, 可作为载体与非贵金属离子相互作用形成复合材料, 制备高效产氢催化剂. 基于此, 本文在室温下原位合成了强耦合相互作用的氧化镍硼/石墨炔(NiBi/GDY)催化剂, 并将其应用于光/电催化产氢反应. 在光催化产氢反应中, 采用曙红为光敏剂, 三乙醇胺为牺牲剂, 可见光下NiBi/GDY的光催化产氢速率可达4.54 mmol g -1 h -1, 产氢速率分别是氧化镍硼/石墨烯(NiBi/graphene)和NiBi的2.9倍和4.5倍. 此外, NiBi/GDY在1.0 M KOH溶液中也表现出良好电催化产氢性能, 电流密度为400 mA/cm 2时其过电位为478.0 mV, 低于商业铂碳(505.3 mV@400 mA/cm 2). NiBi/GDY在光/电催化产氢实验中表现出的较好催化性能可归因于NiBi和GDY之间强耦合相互作用对NiBi电子结构的优化. 上述研究结果表明, 石墨炔可作为理想载体制备高效的光/电催化剂, 同时本文为设计高效稳定的非贵金属产氢催化剂提供了一定的借鉴意义.

关键词: 石墨炔, 杂化材料, 光/电催化剂, 水分解反应, 氢析出

Abstract:

Developing highly active catalysts for photo/electrocatalytic water splitting is an attractive strategy to produce H2 as a renewable energy source. In this study, a new nickel boron oxide/graphdiyne (NiBi/GDY) hybrid catalyst was prepared by a facile synthetic approach. Benefitting from the strong electron donating ability of graphdiyne, NiBi/GDY showed an optimized electronic structure containing lower valence nickel atoms and demonstrated improved catalytic performance. As expected, NiBi/GDY displayed a high photocatalytic H2 evolution rate of 4.54 mmol g ‒1 h ‒1, 2.9 and 4.5 times higher than those of NiBi/graphene and NiBi, respectively. NiBi/GDY also displayed outstanding electrocatalytic H2 evolution activity in 1.0 M KOH solution, with a current density of 400 mA/cm 2 at an overpotential of 478.0 mV, which is lower than that of commercial Pt/C (505.3 mV@400 mA/cm 2). This work demonstrates that GDY is an ideal support for the development of highly active catalysts for photo/electrocatalytic H2 evolution.

Key words: Graphdiyne, Hybrid material, Photo/electrocatalyst, Water splitting reaction, H2 evolution