【摘要】 Bi₂O₂CO₃是一种Bi类半导体催化剂,文章研究了它的超声催化性能。首先,采用水热法制备了微球型的Bi₂O₂CO₃,利用X射线衍射（X-ray Diffraction, XRD）、扫描电子显微镜（Scanning Electron Microscope, SEM）、紫外-可见漫反射光谱对样品的晶体结构、微观形貌、光学特性进行了表征。然后,以罗丹明B（Rh B）作为模型污染物,通过研究超声催化降解罗丹明B来评测Bi₂O₂CO₃的超声催化性能。研究了催化剂的浓度（Ccatalytic）、初始罗丹明B染料的浓度（CRhB）和超声功率（P）等实验因素对超声催化降解效率的影响。得出在Ccatalytic=3 g·L-1,CRhB=10 mg·L-1和P=400 W条件下降解罗丹明B的效率最高,其最高降解效率可以达到91.7%。更多还原

【Abstract】 Bi₂O₂CO₃ is a kind of Bi semiconductor catalyst,in this paper,the sonocatalytic performance of Bi₂O₂CO₃ is studied.The Bi₂O₂CO₃ particles are synthesized by the hydrothermal method,and their crystal structures,morphologies and optical properties are characterized by X-ray diffraction（XRD）,scanning electron microscope（SEM） and ultraviolet-visible diffuse reflectance spectroscopy（UV-Vis DRS）.Then,by taking Rhodamine B（RhB） as a model pollutant,the sonocatalytic performance of Bi₂O₂CO₃ is evaluated in terms of the degradation of Rhodamine B under ultrasonic irradiation.The effects of various experimental factors,such as catalyst dosage（Ccatalytic）,initial RhB concentration（CRhB）and ultrasonic power（P）,on the efficiency of sonocatalysis degradation are investigated.The optimum conditions for sonocatalytic degradation of Rhodamine B are:Ccatalytic = 3 g·L-1,CRhB = 10 mg·L-1 and P = 400 W.The percentage degradation of Rhodamine B after 90 minutes of sonocatalysis is 91.7%.更多还原