• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Hollow NiSe Nanocrystals Heterogenized with Carbon Nanotubes for Efficient Electrocatalytic Methanol Upgrading to Boost Hydrogen Co-Production
【24h】

Hollow NiSe Nanocrystals Heterogenized with Carbon Nanotubes for Efficient Electrocatalytic Methanol Upgrading to Boost Hydrogen Co-Production

机译：中空纳米晶体与碳纳米管有效化，用于高效电催化甲醇升级以提高氢共同生产

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Electro-oxidative organic upgrading, as an ideal alternative to sluggish oxygen evolution reaction (OER) performance, can effectively decrease energy consumption to boost hydrogen evolution reaction (HER) performance. However, developing highly active electrocatalysts for long-term durable organic upgrading with high selectivity at large and steady current density remains challenging. Herein, hollow NiSe nanocrystals heterogenized with carbon nanotubes (h-NiSe/CNTs) are fabricated via a facile one-pot approach. The highly dispersed h-NiSe/CNTs 3D network can efficiently facilitate rapid mass/electron diffusion, thus achieving highly active and long-term stable electrocatalysis for catalyzing methanol to value-added formate at high and steady current density (approximate to 345 mA cm(-2)) with high Faradaic efficiency (95%). This reaction replaces sluggish OER performance to reduce the energy consumption for boosting H-2 generation by six times. The critical active species and methanol activation mechanism are systematically studied using X-ray photoelectron spectroscopy, X-ray absorption fine structure analysis, in situ Raman, and density functional theory calculations, indicating that the non-ignorable SeOx collaborated with in situ formed Ni-OOH species can synergistically modulate the d band center to achieve an optimal adsorption for methanol selective oxidation and suppress the further oxidation to CO2, thus leading to active and stable electrolysis for producing value-added formate with high selectivity and co-generating H-2 with less energy consumption.
机译：电氧化有机升级，作为氧气进化反应（OER）性能缓慢的理想替代品，可以有效地降低能量消耗来提高氢气进化反应（她）的性能。然而，为长期耐用的有机升级开发高活性电催化剂，其具有大的选择性大，稳定的电流密度仍然具有挑战性。在此，通过容易的单罐方法制造与碳纳米管（H-NISE / CNT）的中空纳米晶体化的中空纳米晶体。高度分散的H-NISE / CNTS 3D网络可以有效地促进快速质量/电子扩散，从而实现高活性和长期稳定的电常见，用于催化甲醇以高且稳定的电流密度（近似为345 mA CM） -2））高法率效率（＆ 95％）。该反应替换了缓慢的OER性能，以减少六次提升H-2生成的能量消耗。使用X射线光电子能谱，X射线吸收细结构分析，原位拉曼和密度泛函理论计算系统地研究了临界活性物质和甲醇活化机制，表明非易忽略的SEOX与原位成立的NI-结合OOH物种可以协同调节D带中心，以实现对甲醇选择性氧化的最佳吸附，并抑制进一步氧化至CO2，从而导致活性和稳定的电解，用于生产具有高选择性和共同产生H-2的增值甲酸酯的活性和稳定的电解减少能耗。

著录项

  • 来源
    《Advanced Functional Materials》 |2021年第8期|2008812.1-2008812.12|共12页
  • 作者

    Zhao Bin; Liu Jianwen; Xu Chenyu; Feng Renfei; Sui Pengfei; Wang Lei; Zhang Jiujun; Luo Jing-Li; Fu Xian-Zhu;

  • 作者单位

    Shenzhen Univ Coll Mat Sci & Engn Guangdong Res Ctr Interfacial Engn Funct Mat Shenzhen Key Lab Polymer Sci & Technol Shenzhen 518060 Peoples R China;

    Shenzhen Univ Coll Mat Sci & Engn Guangdong Res Ctr Interfacial Engn Funct Mat Shenzhen Key Lab Polymer Sci & Technol Shenzhen 518060 Peoples R China;

    Univ Alberta Dept Chem & Mat Engn Edmonton AB T6G 2G6 Canada;

    Canadian Light Source Inc Saskatoon SK S7N 0X4 Canada;

    Univ Alberta Dept Chem & Mat Engn Edmonton AB T6G 2G6 Canada;

    Shenzhen Univ Coll Mat Sci & Engn Guangdong Res Ctr Interfacial Engn Funct Mat Shenzhen Key Lab Polymer Sci & Technol Shenzhen 518060 Peoples R China;

    Shanghai Univ Coll Sci Inst Sustainable Energy Shanghai 200444 Peoples R China;

    Shenzhen Univ Coll Mat Sci & Engn Guangdong Res Ctr Interfacial Engn Funct Mat Shenzhen Key Lab Polymer Sci & Technol Shenzhen 518060 Peoples R China;

    Shenzhen Univ Coll Mat Sci & Engn Guangdong Res Ctr Interfacial Engn Funct Mat Shenzhen Key Lab Polymer Sci & Technol Shenzhen 518060 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    activation mechanism; electrocatalysis; hollow nanoheterostructures; in situ Raman; methanol selective oxidation;

    机译：活化机制;电催化;中空纳米能结构;原位拉曼;甲醇选择性氧化;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号