Wu Moyan, Liu Yue, Wu Lili, Hasell Tom, Luan Fang
Department of Chemistry and Chemical Engineering, School of Pharmacy, Jiamusi University Jiamusi 154007 Heilongjiang China
Department of Chemistry, University of Liverpool Liverpool L69 7ZD UK
RSC Adv. 2025 Apr 25;15(17):13225-13234. doi: 10.1039/d5ra01297j. eCollection 2025 Apr 22.
This study aims to utilize sulfur-1,3-diisopropenylbenzene (S-DIB) to develop a more cost-effective treatment method for dye-contaminated wastewater. The behavior and mechanisms of adsorption and photodegradation on the removal of methylene blue (MB) by S-DIB in water were studied systematically, including three isotherm model fitting tests, kinetics and thermodynamic analysis. With the optimization of the adsorption experimental conditions, the results revealed that S-DIB achieved a 96.53% removal percentage of MB at pH 11, initial dye concentration of 8 mg L, adsorbent dose of 20 mg, temperature of 293 K and contact time of 180 min. The adsorption data fitted well with the Langmuir isotherm and pseudo-second order models, with regression coefficients ( ) of 0.9990 and 0.9993, respectively. Thermodynamic studies showed that the adsorption of MB by S-DIB was exothermic and spontaneous. Furthermore, S-DIB exhibited a unique photodegradation property in visible light regions with the removal of MB from water, offering a dual mechanism of adsorption and photodegradation, with a degradation efficiency is 94%. This work enhances the possibilities and potential for the application of sulfur-rich copolymers in wastewater treatments.
本研究旨在利用硫代-1,3-二异丙基苯（S-DIB）开发一种更具成本效益的染料污染废水处理方法。系统研究了S-DIB在水中对亚甲基蓝（MB）的吸附和光降解行为及机理，包括三种等温线模型拟合试验、动力学和热力学分析。通过优化吸附实验条件，结果表明，在pH值为11、初始染料浓度为8 mg/L、吸附剂剂量为20 mg、温度为293 K和接触时间为180 min的条件下，S-DIB对MB的去除率达到96.53%。吸附数据与Langmuir等温线和伪二级模型拟合良好，回归系数分别为0.9990和0.9993。热力学研究表明，S-DIB对MB的吸附是放热且自发的。此外，S-DIB在可见光区域表现出独特的光降解性能，可从水中去除MB，提供了吸附和光降解的双重机制，并具有94%的降解效率。这项工作增加了富硫共聚物在废水处理中应用的可能性和潜力。
