Copper-palladium (CuPd)/boron nitride nanosheet (BNNS) nanocatalysts were successfully prepared by a microwave-assisted method by using BNNSs as a carrier. These catalysts with a low noble metal content had a high catalytic activity for Cr(VI) reduction at room temperature. The reaction rate reached 0.04044[Formula: see text]s[Formula: see text], which was approximately 2.5 times that of Cu8Pd2/rGO with the same metal loading amount. Compared with the previously reported PdCu/NG nanocatalysts with a high noble metal content, the reaction rate increased more than five times. This is of great significance to the application of supported metal composites in environmental catalysis. The structure and morphology of the catalyst was characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). Several types of control experiments showed that the catalytic activity of the catalysts was not only influenced by the synergistic effect of bimetallic CuPd and metal-BNNSs but also related to the catalytic effect of the BNNS carrier itself.

中文翻译：

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微波辅助合成CuPd/BNNS纳米催化剂还原Cr(VI)的催化性能

以BNNSs为载体，采用微波辅助方法成功制备了铜钯（CuPd）/氮化硼纳米片（BNNS）纳米催化剂。这些具有低贵金属含量的催化剂在室温下对 Cr(VI) 还原具有高催化活性。反应速率达到0.04044[公式：见正文]s[公式：见正文]，约为Cu的2.5倍8钯2/rGO 具有相同的金属负载量。与之前报道的高贵金属含量的 PdCu/NG 纳米催化剂相比，反应速率提高了 5 倍以上。这对负载型金属复合材料在环境催化中的应用具有重要意义。采用X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和高分辨率透射电子显微镜对催化剂的结构和形貌进行表征（HRTEM）。几种类型的对照实验表明，催化剂的催化活性不仅受双金属CuPd和金属-BNNSs协同作用的影响，还与BNNS载体本身的催化作用有关。