A systematic investigation on the advantage of confinement effect by nitrogen doped carbon nanotubes for hydrogen evolution reaction

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science Pub Date : 2025-04-21 DOI:10.1016/j.jcis.2025.137667

Yunsi Yan , Bing Wang , Chen Li , Fang Luo , Yifei Li , Yuhua Xie , Quan Zhang , Zehui Yang

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Abstract

Robust hydrogen evolution reaction (HER) electrocatalyst is of significance important for the realization of water splitting technology. In this work, we report the nitrogen doped carbon nanotubes confined CoRu alloy nanoparticles (CoRu@NCNT) as superior HER electrocatalyst. The d band center of Ru atom is downshifted resulting in loosening the hydrogen binding strength; therefore, a robust HER activity is achieved for CoRu@NCNT with mass activity enhanced by 6-time than commercial Pt/C and CoRu/NCNT in both acidic and alkaline mediums. Moreover, compared to CoRu/NCNT electrocatalyst, CoRu@NCNT exhibits a better HER performance attributed to the prevention of avoidable surface oxidation of Ru. Moreover, a more moderate Gibbs free energy for hydrogen is achieved for CoRu@NCNT. Similarly, the stability of CoRu@NCNT outperforms CoRu/NCNT stemming from the NCNT confinement effect suppressing the movement and coalescence of CoRu nanoparticles.

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系统研究了氮掺杂碳纳米管约束效应在析氢反应中的优势

鲁棒析氢反应（HER）电催化剂对于实现水裂解技术具有重要意义。在这项工作中，我们报道了氮掺杂碳纳米管限制的CoRu合金纳米颗粒（CoRu@NCNT）作为优越的HER电催化剂。Ru原子的d带中心下移导致氢结合强度松动；因此，在酸性和碱性介质中，CoRu@NCNT均获得了强大的HER活性，其质量活性比商用Pt/C和CoRu/NCNT提高了6倍。此外，与CoRu/NCNT电催化剂相比，CoRu@NCNT由于防止了Ru的可避免表面氧化而表现出更好的HER性能。此外，对于CoRu@NCNT，氢的吉布斯自由能更为适中。同样，CoRu@NCNT的稳定性优于CoRu/NCNT，这是因为NCNT的限制效应抑制了CoRu纳米颗粒的运动和聚并。

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来源期刊

Journal of Colloid and Interface Science 化学-物理化学

CiteScore

16.10

自引率

7.10%

发文量

2568

审稿时长

2 months

期刊介绍： The Journal of Colloid and Interface Science publishes original research findings on the fundamental principles of colloid and interface science, as well as innovative applications in various fields. The criteria for publication include impact, quality, novelty, and originality. Emphasis: The journal emphasizes fundamental scientific innovation within the following categories: A.Colloidal Materials and Nanomaterials B.Soft Colloidal and Self-Assembly Systems C.Adsorption, Catalysis, and Electrochemistry D.Interfacial Processes, Capillarity, and Wetting E.Biomaterials and Nanomedicine F.Energy Conversion and Storage, and Environmental Technologies