Advanced Materials Research Laboratory, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, 431004, M.S., India.
Electrical and Computer Engineering Department, Nanotechnology and Advanced Materials Laboratory, University of the Peloponnese, 26334, Patras, Greece.
Sci Rep. 2023 May 10;13(1):7595. doi: 10.1038/s41598-023-33453-z.
Superparamagnetic N-doped graphene oxide (GO)- with ZnS nanowires was synthesized by a one-step hydrothermal method by doping dilute amounts of Ga, Cr, In, and Al ions for water treatment and biomedical applications. In these experiments, to enhance their properties, 2% of Ga, In, and or Al were codoped along with 2% Cr ions in these ZnS nanowires. The nanocomposite with the composition, InCrZnS, has better photocatalytic efficiency than other co-doped nanocomposites. The In (metalloids) and Cr (transition metal ion) are the best combinations to increase the magnetic properties which are beneficial for photocatalytic activity. Synthesized nanocomposite materials were characterized by several techniques such as X-ray diffraction, Field emission-scanning electron microscope (FESEM) with EDAX, vibrating sample magnetometer (VSM), UV-Vis, X-ray photoelectron spectroscopy (XPS), and fluorescence spectroscopy. The correlation of intriguing magnetic properties with their photocatalytic properties is also discussed. XPS was employed for the detection of surface defects, phase transformation, and the nature of chemical components present in the nanocomposites. The Frankel and substitutional defects have a direct impact on photocatalytic activity that was determined from the fluorescence (FL) spectroscopy. FL and XPS reveal that the Cr and In codoped composite has a higher percentage of defects hence its photocatalytic efficiency reaches 94.21%.
通过一步水热法合成了超顺磁性 N 掺杂氧化石墨烯（GO）-ZnS 纳米线，通过掺杂少量 Ga、Cr、In 和 Al 离子来进行水处理和生物医学应用。在这些实验中，为了增强它们的性能，在这些 ZnS 纳米线中掺入了 2%的 Ga、In 和或 Al 共掺杂 2%的 Cr 离子。组成为 InCrZnS 的纳米复合材料比其他共掺杂的纳米复合材料具有更好的光催化效率。（类金属）In 和（过渡金属离子）Cr 是提高磁性的最佳组合，这对光催化活性有益。合成的纳米复合材料通过 X 射线衍射、场发射扫描电子显微镜（FESEM）和能量色散 X 射线能谱（EDAX）、振动样品磁强计（VSM）、紫外-可见分光光度计（UV-Vis）、X 射线光电子能谱（XPS）和荧光光谱等多种技术进行了表征。还讨论了有趣的磁性与光催化性能之间的相关性。XPS 用于检测纳米复合材料表面缺陷、相变和化学组分的性质。Frankel 和替代缺陷对光催化活性有直接影响，这是通过荧光（FL）光谱确定的。FL 和 XPS 表明，Cr 和 In 共掺杂复合材料具有更高比例的缺陷，因此其光催化效率达到 94.21%。
