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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Zn nanosheets coated with a ZnS subnanometer layer for effective and durable CO2 reduction
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Zn nanosheets coated with a ZnS subnanometer layer for effective and durable CO2 reduction

机译:Zn纳米片涂有ZnS亚腔计层,用于减少有效和耐用的二氧化碳

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摘要

Electrochemical reduction of CO2 into value-added chemicals provides a facile solution to energy and environmental crisis. Non-precious metals (Zn, Cd, Sn etc.) were identified as promising catalysts for the reduction of CO2. However, their electron-rich peculiarity causes weak adsorption of reaction intermediates and poor performance for CO2 reduction. Here we report that a conceptually new electrocatalyst, Zn nanosheets coated with a porous ZnS subnanometer layer, can achieve excellent catalytic performance which is comparable with that of noble metallic catalysts. Experimental and theoretical investigations reveal that the ZnS subnanometer layer plays a similar role to S dopants, modifies the adsorption of Zn catalysts appropriately, and eventually achieves high catalytic activity. Meanwhile, different from S doping, the ZnS subnanometer layer is chemically inert during the reduction of CO2, thus providing long-term durability.
机译:将CO2的电化学还原成增值化学品为能量和环境危机提供了一种容易的解决方案。 鉴定非贵金属(Zn,Cd,Sn等)作为减少CO 2的承诺催化剂。 然而,它们的电子富有的特殊性导致反应中间体的吸附弱,并且CO 2减少的性能差。 在这里,我们报告说,概念性的新型电催化剂Zn纳米蛋白涂覆有多孔ZnS亚腔计层,可以实现优异的催化性能,其与贵金属催化剂的良好催化性能相当。 实验和理论研究表明,ZnS亚阈值层在掺杂剂中起着类似的作用,适当地改变Zn催化剂的吸附,最终实现高催化活性。 同时,与S掺杂不同,Zns亚腔计层在减少CO 2期间在化学惰性,从而提供长期耐久性。

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    Tianjin Univ Sch Mat Sci &

    Engn Inst New Energy Mat Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Inst New Energy Mat Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Inst New Energy Mat Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Inst New Energy Mat Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Inst New Energy Mat Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Inst New Energy Mat Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Inst New Energy Mat Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Inst New Energy Mat Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Inst New Energy Mat Tianjin 300072 Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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