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| AuCu双金属纳米颗粒的制备、表征及性能探究 |
| Preparation, Characterization and Property Exploration of AuCu Bimetallic Nanoparticles |
| 投稿时间：2019-07-08 |
| DOI： |
| 中文关键词: AuCu双金属纳米颗粒 水热法 核-壳结构 催化活性 光热效应 |
| 英文关键词: AuCu bimetallic nanoparticles hydrothermal method core-shell structure catalytic activity photothermal effect |
| 基金项目:国家自然科学基金(51772256)，河南省高校科技创新团队支持计划(19IRTSTHN026) |
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| 中文摘要: |
| 采用水热法制备AuCu双金属纳米颗粒，并用X射线衍射(XRD)、透射电镜(TEM)和紫外可见光谱(UV-Vis)进行表征，初步研究了其对4-硝基苯酚(4-NP)还原的催化性能和光热效应。结果表明，制备时不同的AuCl4-/Cu2+摩尔比(rAu)可以调控AuCu双金属纳米颗粒的组分和形貌，XRD和吸收光谱特征随rAu的增加表现出更明显的金的特征，rAu>0.5时得到的颗粒具有典型的核-壳结构；核-壳结构的AuCu双金属纳米颗粒对4-NP还原表现出更好的催化活性，受光热效应影响，532 nm激光照射能够加强催化活性；在激光辐射作用下，不同AuCu双金属纳米颗粒具有相似的光热效应。 |
| 英文摘要: |
| AuCu bimetallic nanoparticles were prepared by hydrothermal method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and ultraviolet-visible spectroscopy (UV-Vis). The photothermal effect and catalytic activity for 4-nitrophenol (4-NP) reduction were studied. The results show that the composition and morphology of AuCu bimetallic nanoparticles can be tuned by changing AuCl4-/Cu2+ molar ratios (rAu) during preparation. The XRD and UV-Vis spectra show the evident characteristics of gold component were observed with the increase of rAu. When the rAu is > 0.5, the particles have a typical core-shell structure. The core-shell AuCu bimetallic nanoparticles exhibit better catalytic activity for the reduction of 4-NP, and their catalytic activity can be enhanced by 532 nm laser irradiation because of the photothermal effect. In addition, different AuCu bimetallic nanoparticles have similar photothermal effects. |
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