In this research, ZnO nanoparticles, as a sonocatalyst for degradation of Eosin B dye under ultrasonic irradiation, were synthesized. Various experimental conditions (ultrasound irradiation power: 50–250 W, ultrasound irradiation time: 10–70 min, catalyst dosage: 1–3 g/L and initial dye concentration: 5–25 mg/L), using ZnO nanoparticles were investigated in order to find the optimal condition for the degradation of Eosin B. The crystalline and grain size of samples were obtained using X-Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM), 15 and 30 nm, respectively. The nanoparticles structure was observed in the form of hexagonal. The band-gap of the prepared nanoparticles was measured as 2.9 eV which is appropriate for sonodegradation process under ultrasonic irradiation. Results demonstrated that Eosin B degradation efficiency was enhanced considerably in sonicated samples compared to non-sonicated ones. The experiments were analyzed via response surface methodology (RSM) based on central composite design (CCD). Analysis of variance (ANOVA) confirmed a good reliability of quadratic response surface model for predicting the sonocatalytic efficiency at various operational parameters (R² = 0.9918 and Adjusted R² = 0.9841). Results indicated that increasing the ultrasound power and time led to enhancement of Eosin B removal efficiency, while increasing the dye concentration caused to its decreasing. The degradation of dye, increased by enhancement of the catalyst dosage, where in the specified value (2.17 g/L) it began to decrease. The optimization of the process showed the maximum sonocatalyst degradation of 93.46% at irradiation power, irradiation time, catalyst dosage and dye concentration of 250 W, 70 min, 2.17 g/L and 5.08 mg/L, respectively. Kinetic studies showed that the sonodegradation of Eosin B corresponds well to first-order reaction.

在这项研究中，合成了ZnO纳米粒子，作为超声降解曙红B染料的声催化剂。使用ZnO纳米粒子对各种实验条件（超声波辐照功率：50–250 W，超声辐照时间：10–70 min，催化剂用量：1-3 g / L和初始染料浓度：5-25 mg / L）进行了研究。为了找到曙红B降解的最佳条件。使用X射线衍射（XRD）和透射电子显微镜（TEM）分别获得了15 nm和30 nm的样品的晶体和晶粒尺寸。以六边形的形式观察到纳米颗粒结构。所制备的纳米颗粒的带隙测量为2.9eV，其适合于超声辐射下的阳极沉淀过程。结果表明，与未超声处理的样品相比，超声处理的样品中曙红B的降解效率得到了显着提高。通过基于中央复合设计（CCD）的响应面方法（RSM）对实验进行了分析。方差分析（ANOVA）证实了二次响应面模型在预测各种操作参数下的声催化效率方面具有良好的可靠性（R²  = 0.9918，调整后的R ²  = 0.9841）。结果表明，增加超声功率和时间可提高曙红B的去除效率，而增加染料浓度则导致其降低。染料的降解随着催化剂用量的增加而增加，在规定值（2.17 g / L）下，染料的降解开始减少。工艺优化表明，在250 W，70 min，2.17 g / L和5.08 mg / L的辐照功率，辐照时间，催化剂用量和染料浓度下，最大声催化剂降解率为93.46％。动力学研究表明，曙红B的阳极沉淀与一级反应非常吻合。