Al-Kadhi Nada S, Abdelrahman Ehab A, Alamro Fowzia S, Saad Fawaz A, Al-Raimi Doaa S
Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, 11671, Riyadh, Saudi Arabia.
Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), 11623, Riyadh, Saudi Arabia.
Sci Rep. 2025 Feb 14;15(1):5525. doi: 10.1038/s41598-025-90098-w.
Crystal violet dye, widely used in industries, poses environmental and human health hazards due to its persistence and toxicity. Effective removal methods are critical to mitigate these impacts. This study presents the synthesis of a novel ZrO@MnCO@CdCO nanocomposite for the efficient removal of crystal violet dye from aqueous solutions. The nanocomposite was synthesized using a precipitation method and characterized using XRD, SEM, EDX, and BET surface area analysis. Adsorption experiments were conducted under various conditions, including pH, contact time, concentration, and temperature. The ZrO@MnCO@CdCO nanocomposite exhibited a mesoporous structure (22.38 m/g surface area, 0.0935 cm/g total pore volume, and 8.79 nm average pore size) and an average crystallite size of 76.30 nm. The maximum adsorption capacity for crystal violet dye was 179.52 mg/g, following pseudo-second-order kinetics and the Langmuir isotherm. Thermodynamic studies revealed an exothermic, physical, and spontaneous adsorption process. Regeneration experiments demonstrated high reusability with desorption efficiency reaching 99.67% over five cycles.
结晶紫染料在工业中广泛使用，因其持久性和毒性对环境和人类健康构成危害。有效的去除方法对于减轻这些影响至关重要。本研究介绍了一种新型ZrO@MnCO@CdCO纳米复合材料的合成，用于从水溶液中高效去除结晶紫染料。该纳米复合材料采用沉淀法合成，并通过XRD、SEM、EDX和BET表面积分析进行表征。在各种条件下进行了吸附实验，包括pH值、接触时间、浓度和温度。ZrO@MnCO@CdCO纳米复合材料呈现介孔结构（表面积为22.38 m/g，总孔体积为0.0935 cm/g，平均孔径为8.79 nm），平均晶粒尺寸为76.30 nm。结晶紫染料的最大吸附容量为179.52 mg/g，遵循准二级动力学和朗缪尔等温线。热力学研究表明吸附过程是放热、物理和自发的。再生实验证明该材料具有高可重复使用性，在五个循环中解吸效率达到99.67%。
