Lei Guangyu, Ma Jingwen, Li Zhen, Fan Xiaobin, Peng Wenchao, Zhang Guoliang, Zhang Fengbao, Li Yang
Lab of Advanced Nano-structures & Transfer Processes, Department of Chemical Engineering, Tianjin University, Tianjin 300354, China.
Nanomaterials (Basel). 2018 Oct 25;8(11):877. doi: 10.3390/nano8110877.
In this paper, a facile route has been developed to prepare magnetic trimetallic Au-Ag-γ-Fe₂O₃/rGO nanocomposites. The impact of the preparation method (the intensity of reductant) on the catalytic performance was investigated. The nanocomposites were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The prepared nanocomposites show fine catalytic activity towards the reduction reaction of 4-nitrophenol (4-NP). The nanocomposites also have superparamagnetism at room temperature, which can be easily separated from the reaction systems by applying an external magnetic field.
本文开发了一种简便的方法来制备磁性三金属Au-Ag-γ-Fe₂O₃/rGO纳米复合材料。研究了制备方法（还原剂强度）对催化性能的影响。通过透射电子显微镜（TEM）、X射线衍射（XRD）和X射线光电子能谱（XPS）对纳米复合材料进行了表征。所制备的纳米复合材料对4-硝基苯酚（4-NP）的还原反应表现出良好的催化活性。该纳米复合材料在室温下还具有超顺磁性，通过施加外部磁场可以很容易地从反应体系中分离出来。
