Novel heterostructured β-Bi₂O₃/Bi₂O₂CO₃ nanoplates (hBN) were synthesized to observe the sonocatalytic degradation of bisphenol A (BPA) (widely used as a model pollutant) under ultrasonic (US) irradiation. Prior to obtaining the hBN, the Bi₂O₂CO₃ micropowder precursor was prepared under hydrothermal conditions and then converted to hBN by increasing the calcination temperature to 300°C. The synthesized hBN samples were characterized by field emission scanning electron microscope with energy dispersive X-ray analysis (FESEM/EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), ultraviolet-visible spectrophotometer diffuse reflection spectroscopy (UV-vis DRS), and X-ray photoelectron spectroscopy (XPS). The hBN/US system exhibited greater sonocatalytic activity for the degradation of BPA than the US treatment with the single element bismuth oxide, β-Bi₂O₃ prepared by annealing the Bi₂O₂CO₃ precursor at 400°C for 1 h. The US frequency and US power intensity in the hBN/US system were the key operating parameters, which were responsible for the complete degradation of BPA during 6 h of reactions. The degradation efficiency of BPA under the US irradiation was positively correlated with the dose of hBN. Our findings indicate that heterostructured hBN can be used as an efficient sonocatalyst for the catalytic degradation of BPA in water and wastewater treatment.

新颖异质β-Bi系₂ ö ₃ /铋₂ ö ₂ CO ₃纳米片（六方氮化硼）的合成超声（US）辐射下观察双酚A（BPA）（广泛用作模型污染物）的声催化降解。在获得hBN之前，Bi ₂ O ₂ CO ₃在水热条件下制备微粉前体，然后通过将煅烧温度提高到300°C转化为hBN。合成的hBN样品通过场发射扫描电子显微镜，能量色散X射线分析（FESEM / EDX），透射电子显微镜（TEM），X射线衍射（XRD），紫外可见分光光度计漫反射光谱（UV-对比DRS）和X射线光电子能谱（XPS）。该六方氮化硼/ US系统表现出更大的声催化活性BPA的比用氧化铋的单个元件美国治疗退化，β-Bi系₂ ö ₃通过退火制备的Bi ₂ ö ₂ CO ₃前体在400°C下1小时。hBN / US系统中的US频率和US功率强度是关键的操作参数，这些参数负责反应6小时内BPA的完全降解。BPA在美国辐射下的降解效率与hBN剂量呈正相关。我们的发现表明，异质结构的hBN可以用作水和废水处理中BPA催化降解的有效声催化剂。