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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：通过脱合金Cu–Y金属玻璃制备具有可调韧带的纳米多孔铜并具有良好的声催化性能

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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 ）中脱铜Cu-Y二元非晶带制备具有可调韧带的纳米多孔铜（NPC）。 ）解决方案。用Cu 58 Y 42 金属玻璃合成的NPC样品的韧带尺寸很大（237 nm）通过去除Cu 72 Y 28 （406 nm）小于一个。该结果表明，NPC的微观结构会受到前体合金的合金成分的强烈影响。然后，将具有不同微观结构的NPC应用于声催化降解甲基橙（MO）染料。与商用铜箔和样品相比，通过脱合金Cu 58 Y 42 金属玻璃生产的NPC显示出优异的声催化活性。通过解除使用Cu 72 Y 28 来实现。 NPC的声-Fenton样过程的机理可以通过结合铜韧带，H 2 O 2 < / sub> 和超声。此外，综合评估了脱合金条件（酸浓度，温度和浸出时间）对NPC韧带尺寸的影响，这可为进一步制造具有更理想形态和更高催化活性的NPC提供有意义的见解。

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