Krylova Valentina, Dukštienė Nijolė, Markevičiūtė Henrieta
Department of Physical and Inorganic Chemistry, Faculty of Chemical Technology, Kaunas University of Technology, Radvilėnų Str. 19, 50254 Kaunas, Lithuania.
Nanomaterials (Basel). 2022 Jul 27;12(15):2584. doi: 10.3390/nano12152584.
Ag-Se nanostructure films were deposited on a-Se/nylon templates by a template-engaged reaction. Firstly, amorphous selenium (a-Se) was deposited on nylon by employing the chemical bath deposition method while using HSeO and NaSO solutions with an increasing selenium deposition time. Then, these a-Se/nylon templates were exposed into AgNO solution at ambient temperature and pressure. The Ag-Se/nylon nanocomposites surface morphology, elemental and phase composition, and optical properties were monitored depending on the selenium deposition time on nylon. Scanning electron microscopy (SEM) analysis confirmed the development of a very complex surface composed of pyramidal-like sub-micron structures, agglomerates, and grid-like structures. Energy dispersive spectroscopy (EDS) proved the presence of carbon, oxygen, nitrogen, selenium, and silver. SEM/EDS cross-sectional analysis confirmed the multilayer character with different individual elemental composition in each film layer. X-ray diffraction analysis revealed a polycrystalline AgSe phase with or without metallic Ag. The RMS value obtained from atomic force microscopy varies from 25.82 nm to 57.04 nm. From the UV-Vis spectrophotometry, the direct optical band gaps were found to be 1.68-1.86 eV. Ag-Se/nylon composites exhibit high refractive indices in the near infrared region.
通过模板参与反应，在a-Se/尼龙模板上沉积了Ag-Se纳米结构薄膜。首先，采用化学浴沉积法，在使用HSeO和NaSO溶液的情况下，随着硒沉积时间的增加，将非晶态硒（a-Se）沉积在尼龙上。然后，将这些a-Se/尼龙模板在室温和常压下暴露于AgNO溶液中。根据尼龙上的硒沉积时间，监测Ag-Se/尼龙纳米复合材料的表面形态、元素和相组成以及光学性质。扫描电子显微镜（SEM）分析证实形成了由金字塔状亚微米结构、团聚体和网格状结构组成的非常复杂的表面。能量色散光谱（EDS）证明了碳、氧、氮、硒和银的存在。SEM/EDS截面分析证实了每个薄膜层具有不同的单个元素组成的多层特征。X射线衍射分析揭示了有或没有金属Ag的多晶AgSe相。从原子力显微镜获得的均方根（RMS）值在25.82纳米至57.04纳米之间变化。通过紫外-可见分光光度法，发现直接光学带隙为1.68-1.86电子伏特。Ag-Se/尼龙复合材料在近红外区域表现出高折射率。
