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Copper Quantum Dots Formation in a Borosilicate Glass

机译:硼硅酸盐玻璃中的铜量子点形成

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This Borosilicate glass offers superior properties to the ordinary silicate glass. Metallic quantum dots embedded in glass are promising materials which can be used in modern optical devices. However, the introduction of metallic quantum dots into borosilicate glass has not been studied. We investigated the formation of copper quantum dots in Cu-doped borosilicate glass matrix using thermal annealing process. The reductant SnO included in borosilicate glass played an important role in the formation of the metallic quantum dots. Specifically, Cu quantum dots were formed only when SnO content reached at least 0.5 wt% after borosilicate glass was heated at 600 degrees C for 60min, which was evidenced by the detection of the characteristic absorption band at about 560nm originated from the surface plasmon resonance of Cu nanoparticles. The optimal concentration of SnO was found to be 1.5 wt% and the mean size for the heating-induced Cu quantum dots was calculated to be similar to 1.7 nm. Our data offer a simple approach to prepare the metallic quantum dots in borosilicate glass matrix and suggest a new type of metallic quantum dots for applications where superior durability, chemical and heat resistance are required.
机译:这种硼硅酸盐玻璃提供了比普通硅酸盐玻璃优越的性能。嵌入玻璃中的金属量子点是有前途的材料,可用于现代光学设备中。然而,尚未研究将金属量子点引入硼硅酸盐玻璃中。我们研究了使用热退火工艺在掺杂铜的硼硅酸盐玻璃基体中形成铜量子点。硼硅酸盐玻璃中所含的还原剂SnO在金属量子点的形成中起着重要作用。具体而言,仅在将硼硅酸盐玻璃在600℃下加热60分钟后,SnO含量达到0.5wt%以上时,形成Cu量子点,这是由于检测到了由560nm左右的表面等离振子共振引起的特征吸收带所证实的。铜纳米粒子。发现SnO的最佳浓度为1.5重量%,并且加热诱导的Cu量子点的平均尺寸被计算为类似于1.7nm。我们的数据提供了一种简单的方法来制备硼硅酸盐玻璃基体中的金属量子点,并提出了一种新型的金属量子点,用于需要出色的耐用性,耐化学性和耐热性的应用。

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