Hazardous effluents in the wastewaters deteriorate the ecosystem and its effective treatment is of interest to the scientific community. In this context, herein, the cobalt ferrite (CoFe₂O₄) nanospheres were fabricated and inspected for photo-catalytic-driven degradation of a hazardous Alizarin Red S (ARS) dye, as a model pollutant. For effective preparation of CoFe₂O₄ nanospheres, triethylene glycol (PEG) was used as a stabilizing agent, during the reaction of cobalt oxide and iron sulfate, followed by thermally annealed and etched with 1 M hydrochloric acid. The surface of annealed nanospheres was functionalized by using 3-(triethoxysilyl)propylamine (APTES). The as-prepared pristine, annealed, and surface functionalized CoFe₂O₄ nanospheres were characterized by analytical techniques, such as Fourier transform infrared (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). From the XRD profile, the particle size of annealed and functionalized nanospheres were 17.3 and 21 nm, respectively. FTIR study corroborates the surface tailoring of CoFe₂O₄ nanospheres. The SEM analysis of F-CoFe₂O₄ nanospheres showed that the bigger aggregates of nanospheres disappear, and the overall distribution of particles was notably improved after functionalization. The surface engineered nanospheres presented high efficiency for ARS dye degradation under the optimal conditions of irradiation time, pH, adsorbent dose, dye dose, and different acids. Kinetics models explained that the degradation reaction following pseudo-first-order kinetics. The turnover number (TON) reached up to 2.75 × 10⁸_, 2.85 × 10⁸ and 3.01 × 10⁸ for bare, annealed and functionalized CoFe₂O₂ nanoparticles, respectively. In conclusion, the results indicate a high potential of photo-driven catalytic remediation of tested hazardous dye by engineered cobalt ferrite nanospheres and encourage further work on photocatalytic abatement of organic contaminants.

废水中的有害废水使生态系统恶化，其有效处理受到科学界的关注。在此背景下，本文制备了钴铁氧体（CoFe ₂ O ₄）纳米球并检查了作为模型污染物的危险茜素红S（ARS）染料的光催化驱动降解。为了有效地制备CoFe ₂ O ₄纳米球，在氧化钴和硫酸铁反应期间，使用三甘醇（PEG）作为稳定剂，然后进行热退火并用1 M盐酸蚀刻。退火的纳米球表面通过使用3-（三乙氧基甲硅烷基）丙胺（APTES）进行功能化。制备的原始，退火和表面功能化的CoFe₂ O ₄纳米球通过分析技术进行表征，例如傅立叶变换红外（FTIR），X射线衍射（XRD）和扫描电子显微镜（SEM）。根据XRD曲线，退火和功能化的纳米球的粒径分别为17.3和21 nm。FTIR研究证实了CoFe ₂ O ₄纳米球的表面修整。F-CoFe ₂ O ₄的SEM分析纳米球表明，较大的纳米球聚集体消失了，官能化后颗粒的整体分布得到了明显改善。经表面工程处理的纳米球在最佳的辐照时间，pH，吸附剂量，染料剂量和不同酸的最佳条件下，对ARS染料的降解表现出很高的效率。动力学模型解释了降解反应遵循伪一级动力学。转换数（TON）最多时达到2.75×10 ⁸ _， 2.85×10 ⁸和3.01×10 ⁸为裸露的，退火的和官能化的CoFe ₂ ö ₂纳米颗粒。总之，结果表明，工程钴铁氧体纳米球具有光驱动催化修复被测有害染料的巨大潜力，并鼓励人们进一步开展光催化消除有机污染物的工作。