Abstract

In this paper, by a hydrothermal method and using sucrose and silver nitrate, carbon nanospheres and high purity Ag@C core-shell nanostructures were prepared. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), EDX and FTIR spectroscopy. The average diameter of the carbon spheres, Ag@C core-shells and their core were measured 250, 350 and 55 nm, respectively. Finally, the adsorption capacity and photocatalytic performance of the Ag@C core-shells were investigated by decomposition of methylene blue dye. The results revealed that the Ag@C core-shell show a relatively good photocatalytic performance.

• Highlights

• Ag@C core-shell nanostructures were prepared using a hydrothermal method.

• The dye adsorption and photocatalytic performance of the Ag@C was investigated.

• Methylene blue was chosen as pollutant agent.

• After 180 minutes UV irradiation more than 50% of the dye was decomposed.

摘要

本文采用水热法，利用蔗糖和硝酸银，制备了碳纳米球和高纯度 Ag@C 核壳纳米结构。通过 X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、EDX 和 FTIR 光谱对样品进行了表征。碳球、Ag@C 核壳及其核的平均直径分别测量为 250、350 和 55 nm。最后，通过亚甲基蓝染料的分解研究了Ag@C核壳的吸附容量和光催化性能。结果表明，Ag@C核壳表现出较好的光催化性能。

• 强调

• 使用水热法制备 Ag@C 核壳纳米结构。

• 研究了Ag@C的染料吸附和光催化性能。

• 选择亚甲蓝作为污染剂。

• 180 分钟紫外线照射后，超过 50% 的染料分解。