The present work seeks to investigate the kinetics and thermodynamic studies of ethidium bromide (EtBr) and eosin adsorption onto the synthesized Manganese (II) doped Zinc (II) Sulphide nanoparticles. A convenient scheme of co-precipitation was used for the synthesis of Manganese (II) doped Zinc (II) Sulphide nanoparticles. The Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM) and X-ray diffractogram (XRD) techniques were used for the characterization of synthesized nanoparticles. The adsorption study was undertaken in a systematic manner. Effects of different experimental parameters were studied using batch adsorption method. It was evident from the results that EtBr and eosin removal was inversely proportional to the concentration of initial dye and directly proportional to contact time and adsorbent used. To study the adsorption equilibrium three different isotherm models like Langmuir, Freundlich and Flory-Huggins were used. It was observed that adsorption data synced most successfully with Langmuir isotherm model as compared to Freundlich and Flory-Huggins isotherm model. To fit the investigational statistics, the kinetic models pseudo 1st order, pseudo 2nd order and intra particle diffusion were taken onto consideration. The maximum dye removal of 98.19% and 97.16% for EtBr and eosin, was observed during the synthesis of nanoparticles.

目前的工作旨在研究溴化乙锭 (EtBr) 和伊红吸附在合成的锰 (II) 掺杂的硫化锌 (II) 纳米粒子上的动力学和热力学研究。使用方便的共沉淀方案来合成锰 (II) 掺杂的硫化锌 (II) 纳米颗粒。傅里叶变换红外光谱（FTIR）、场发射扫描电子显微镜（FESEM）和X射线衍射图（XRD）技术用于表征合成纳米颗粒。吸附研究以系统的方式进行。采用间歇吸附法研究了不同实验参数的影响。从结果可以明显看出，EtBr 和曙红的去除与初始染料的浓度成反比，与接触时间和所使用的吸附剂成正比。为了研究吸附平衡，使用了 Langmuir、Freundlich 和 Flory-Huggins 等三种不同的等温线模型。据观察，与 Freundlich 和 Flory-Huggins 等温线模型相比，吸附数据与 Langmuir 等温线模型同步最成功。为了拟合研究统计数据，考虑了伪一阶、伪二阶和颗粒内扩散动力学模型。在纳米颗粒的合成过程中，观察到 EtBr 和曙红的最大染料去除率为 98.19% 和 97.16%。