Herein, solvothermal synthesized Cu₂FeSnS${}_4$ (CFTS) particles are reported as an efficient adsorbent for removing acid fuchsin (AF) dye pollutants from the wastewater. Variation in synthesis reaction time led to have a porous sphere, sheet-flakes, and intermixed flower-sheet morphologies of CFTS particles synthesized at 200 °C for 6 h, 12 h and 18 h, respectively. The effect of surface morphologies of the CFTS particles on dye adsorption capability is examined. The porous spheres of CFTS particles have shown approximately (89.25 ± 2.21)% of AF dye adsorption within 10 min, and the value reaches (97.12 ± 0.76)% in 60 min. The high adsorption capacity i.e (123.12 ± 2.09) mg/g is obtained for porous spherical CFTS particles. The adsorption isotherm and kinetic studies reveal that the dye adsorption can be explained by the Langmuir isotherm and pseudo-second-order kinetic model. Further, the porous CFTS particles exhibit good stability and reusability of the adsorbent for wastewater purification. The present study results indicate that porous earth-abundant and non-toxic quaternary chalcogenide particles can be low cost, highly efficient adsorbent for removing organic acid fuchsin (AF) dye pollutants from wastewater.

溶剂热合成Cu ₂ FeSnS${}_4$据报道（CFTS）颗粒是从废水中去除酸性品红（AF）染料污染物的有效吸附剂。合成反应时间的变化导致CFTS颗粒分别在200°C，6 h，12 h和18 h时具有多孔球体，片状薄片和混合的花片形态。考察了CFTS颗粒的表面形态对染料吸附能力的影响。CFTS颗粒的多孔球在10分钟内显示出约（89.25±2.21）％的AF染料吸附，在60分钟内该值达到（97.12±0.76）％。对于多孔球形CFTS颗粒，获得了高吸附容量，即（123.12±2.09）mg / g。吸附等温线和动力学研究表明，染料吸附可以用Langmuir等温线和拟二级动力学模型来解释。进一步，多孔CFTS颗粒具有良好的稳定性和吸附剂用于废水净化的可重复使用性。目前的研究结果表明，多孔的富含地球和无毒的季铵硫属元素颗粒可以是低成本，高效的吸附剂，用于去除废水中的有机酸品红（AF）染料污染物。