The development of synthetic methods of copper nanoparticles (Cu‐NPs) on conductive supports is very challenging and receives much attention. Here, we describe a novel technique to grow stable and uniform metallic Cu‐NPs homogeneously on the surface of pristine multiwalled carbon nanotube (MWNTs) catalyst support physically functionalized with a pyridine‐based polybenzimidazole (PyPBI) polymer that acts as a ligand to capture the Cu‐NPs. Cu‐metal nanoparticles with a particle size of 5.0±0.5 nm were obtained on the surface of MWNTs with homogenous and uniform distribution. The newly prepared Cu‐NPs show a remarkably enhanced air stability and electrical conductivity, compared to the current state of the art Cu‐NPs, over 20 days and 500 potential cycles, respectively, with a limited degradation rate of Cu‐metallic state. The PyPBI polymer plays an essential role in the stability of Cu‐NPs on the surface of MWNTs through coordination with PyPBI, suppressing the Cu‐degradation process, which usually decreases the Cu application efficiency. Accordingly, the prospects of applications of the present Cu‐NPs composite are excellent.

中文翻译：

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吡啶基聚苯并咪唑碳纳米管复合材料上负载的超小铜金属纳米粒子的高电导率和空气稳定性

在导电载体上合成铜纳米颗粒（Cu-NPs）的合成方法非常具有挑战性，受到了广泛的关注。在这里，我们描述了一种新技术，该技术可在原始多壁碳纳米管（MWNTs）催化剂载体表面上均匀稳定地生长稳定且均匀的金属Cu-NP，并使用吡啶基聚苯并咪唑（PyPBI）聚合物进行物理功能化，该聚合物作为配体来捕获铜纳米颗粒 在多壁碳纳米管的表面上获得了粒径为5.0±0.5 nm的铜金属纳米颗粒，其分布均匀且均匀。与目前的最新铜纳米颗粒相比，新制备的铜纳米颗粒在20天和500个电位循环中显示出与当前最新的铜纳米颗粒相比显着增强的空气稳定性和导电性，且铜金属态的降解速率有限。通过与PyPBI配位，PyPBI聚合物在MWNT表面Cu-NPs的稳定性中起着至关重要的作用，抑制了Cu的降解过程，这通常会降低Cu的施用效率。因此，目前的Cu-NPs复合材料的应用前景非常好。