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首页> 外文期刊>RSC Advances >Surface engineering-modulated porous N-doped rod-like molybdenum phosphide catalysts: towards high activity and stability for hydrogen evolution reaction over a wide pH range
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Surface engineering-modulated porous N-doped rod-like molybdenum phosphide catalysts: towards high activity and stability for hydrogen evolution reaction over a wide pH range

机译：表面工程调制多孔N掺杂棒状钼磷酸催化剂：在宽pH范围内氢化反应的高活性和稳定性

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摘要

Electrochemical water splitting is an economic, green and sustainable route to produce hydrogen through the hydrogen evolution reaction (HER). Nowadays, noble metal-free phosphides have been widely used as catalysts in the HER, showing potential applications for both renewable energy production and environmental remediation. Nevertheless, developing surface self-doped MoP electrocatalysts with high HER performances in a wide pH range still remains a challenge. In this work, a novel synthesis strategy was developed to fabricate porous one-dimensional (1D) nitrogen-doped molybdenum phosphide (NMoP) nanorods. The prepared N-MoP-800 catalyst exhibits a low onset potential of 65 mV and low Tafel slope of 58.66 mV dec(-1) in 0.5 M H2SO4, which is almost 2 times higher than that of the pristine MoP nanorod anode. Furthermore, the N-MoP materials show long-term durability for 12 h in a wide pH range. The synergistic effects of pyridinic N and N doping in MoP are responsible for the high catalytic activity of N-MoP under acidic conditions, while the N-Mo component plays a key role in enhancing the HER activity of N-MoP. These interesting findings are helpful for the rational design of highly active HER catalysts. More importantly, this study provides a new strategy to synthesize highly active catalysts with low costs for clean energy conversion.
机译：电化学水分是一种经济，绿色和可持续的途径，以通过氢进化反应（她）产生氢气。如今，无贵巴金属磷酸已被广泛用作她的催化剂，显示可再生能源生产和环境修复的潜在应用。然而，在宽pH范围内具有高度性能的开发表面自掺杂的拖把电催化剂仍然是一个挑战。在这项工作中，开发了一种新的合成策略以制造多孔一维（1D）氮掺杂钼磷化钼（NMOP）纳米棒。制备的N-MOP-800催化剂在0.5M H 2 SO 4中表现出65mV的低发病潜力，低于58.66mV（-1）的低滴落斜率，其几乎比原始拖把纳米棒阳极高的2倍。此外，N-MOP材料在宽pH范围内显示12小时的长期耐久性。吡啶的掺杂在摩晖中的协同作用负责酸性条件下N-MOP的高催化活性，而N-Mo组分在提高N-MOP的活性方面发挥着关键作用。这些有趣的发现有助于高活跃的催化剂的合理设计。更重要的是，该研究提供了一种新的策略，以合成高活性催化剂，以低成本用于清洁能量转换。

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  • 来源
    《RSC Advances》 |2018年第47期|共9页
  • 作者

    Chai Liying; Yuan Wenyu; Cui Xue; Jiang Haiying; Tang Junwang; Guo Xiaohui;

  • 作者单位

    Northwest Univ Coll Chem &

    Mat Sci Key Lab Synthet &

    Nat Funct Mol Chem Minist Educ Xian 710069 Shaanxi Peoples R China;

    Northwestern Polytech Univ Sci &

    Technol Thermostruct Composite Mat Lab Xian 710072 Shaanxi Peoples R China;

    Northwest Univ Coll Chem &

    Mat Sci Key Lab Synthet &

    Nat Funct Mol Chem Minist Educ Xian 710069 Shaanxi Peoples R China;

    Northwest Univ Coll Chem &

    Mat Sci Key Lab Synthet &

    Nat Funct Mol Chem Minist Educ Xian 710069 Shaanxi Peoples R China;

    UCL Dept Chem Engn Torrington Pl London WC1E 7JE England;

    Northwest Univ Coll Chem &

    Mat Sci Key Lab Synthet &

    Nat Funct Mol Chem Minist Educ Xian 710069 Shaanxi Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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