利用超临界二氧化碳（SC CO₂）技术剥离块状h-BN，制备氮化硼纳米片（BNNSs），并将钴纳米粒子负载在BNNSs上，得到催化剂Co/BNNSs，并通过XRD、FT-IR和SEM对两者的结构和形貌进行表征。以对硝基苯酚的催化还原反应为模型考察催化剂的催化性能，经过5次循环后，还原活性无明显降低，对硝基苯酚的还原率仍在80%以上。因此，Co/BNNSs催化剂具有良好的稳定性和催化还原对硝基苯酚的性能。

Co/BNNSs catalyst is obtained by loading cobalt nanoparticles on hexagonal boron nitride nanosheets (BNNSs) that are prepared through the exfoliation of bulk hexagonal boron nitride (h-BN) in supercritical CO₂.The morphologies and structures of BNNSs and Co/BNNSs are characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR) and Scanning Electron Microscope (SEM).Moreover, the catalytic activities of Co/BNNSs are investigated in reducing p-nitrophenol to p-aminophenol.The result illustrates that the reduction activity of the catalyst does not decrease significantly after five cycles and the reduction rate remains still over 80%.It is verified that Co/BNNSs have a good stability and can keep excellent catalytic activities in the reduction of p-nitrophenol.

宋晓玲(1992-),女,硕士研究生,研究方向为催化材料与催化工程,550412153@qq.com。