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首页> 外文期刊>RSC Advances >Fabrication of nanoporous copper with tunable ligaments and promising sonocatalytic performance by dealloying Cu-Y metallic glasses
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Fabrication of nanoporous copper with tunable ligaments and promising sonocatalytic performance by dealloying Cu-Y metallic glasses

机译：用可调谐韧带制造纳米多孔铜，并通过Deploying Cu-Y金属玻璃进行高声催化性能

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摘要

Nanoporous copper (NPC) with tunable ligaments was prepared by dealloying Cu-Y binary amorphous ribbons in sulfuric acid (H2SO4) solution. The ligament size of the NPC sample synthesized by dealloying Cu58Y42 metallic glasses (237 nm) is much smaller than the one by dealloying Cu72Y28 (406 nm). This result reveals that the microstructure of NPC can be strongly influenced by the alloy composition of precursor alloys. Then, NPC with different microstructures were applied in the sono-catalytic degradation of methyl orange (MO) dye. NPC produced by dealloying Cu58Y42 metallic glasses displayed superior sonocatalytic activity compared to commercial copper foil and the sample by dealloying Cu72Y28. The mechanism of the sono-Fenton-like process of NPC can be explained by being due to a combination of Cu ligament, H2O2 and ultrasound. In addition, the influence of the dealloying conditions (acid concentration, temperature and leaching time) on the ligament size of NPC was evaluated comprehensively, which could provide meaningful insight for further fabricating NPC with more desirable morphology and higher catalytic activity.
机译：通过在硫酸（H 2 SO 4）溶液中释放Cu-Y二元非晶结构来制备具有可调谐韧带的纳米多孔铜（NPC）。通过释放Cu58Y42金属玻璃（237nm）合成的NPC样品的韧带尺寸远小于通过释放Cu72Y28（406nm）的小于1。该结果表明，NPC的微观结构可以受到前体合金的合金组成的强烈影响。然后，在甲基橙（Mo）染料的超声催化降解中，应用具有不同微结构的NPC。通过解放的Cu72Y28与商业铜箔和样品相比，通过解放的Cu58Y42金属玻璃生产的NPC显示出优异的儿童催化活性。由于Cu锌，H2O2和超声组合，可以通过组合来解释NPC的Sono-Fenton样方法的机制。此外，综合评价了Deploying条件（酸浓度，温度和浸出时间）对NPC的韧带大小的影响，这可以提供有意义的洞察力，用于进一步制造具有更理想的形态和更高的催化活性的NPC。

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  • 来源
    《RSC Advances》 |2017年第68期|共11页
  • 作者

    Wang Ning; Pan Ye; Wu Shikai; Zhang Enming; Dai Weiji;

  • 作者单位

    Southeast Univ Sch Mat Sci &

    Engn Jiangsu Key Lab Adv Metall Mat Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Mat Sci &

    Engn Jiangsu Key Lab Adv Metall Mat Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Mat Sci &

    Engn Jiangsu Key Lab Adv Metall Mat Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Mat Sci &

    Engn Jiangsu Key Lab Adv Metall Mat Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Mat Sci &

    Engn Jiangsu Key Lab Adv Metall Mat Nanjing 211189 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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