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S‐Doped Magnetic Mesoporous Carbon for Efficient Adsorption of Methyl Orange from Aqueous Solution
Clean - Soil Air Water ( IF 1.5 ) Pub Date : 2020-11-27 , DOI: 10.1002/clen.202000285 Jiangyan Xu 1 , Shiman Zhai 1 , Bo Zhu 1 , Jingxin Liu 1 , Aimin Lu 1 , Hongmei Jiang 1
Clean - Soil Air Water ( IF 1.5 ) Pub Date : 2020-11-27 , DOI: 10.1002/clen.202000285 Jiangyan Xu 1 , Shiman Zhai 1 , Bo Zhu 1 , Jingxin Liu 1 , Aimin Lu 1 , Hongmei Jiang 1
Affiliation
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A simple and rapid soft‐templating coupled with one‐pot solvent thermal method is developed to synthesize S‐doped magnetic mesoporous carbon (S‐doped MMC). In this method, phenolic resin is used as a carbon precursor and Pluronic copolymer P123 is used as a template and 2,5‐dimercapto‐1,3,4‐thiadiazole is used as sulfur source. Prepared S‐doped MMC processes a high specific surface area, the Fe3O4 particles are well embedded in the mesoporous carbon walls that exhibit a strong magnetic response, and the hydrated iron nitrate loading amount of 0.808 g is the best. Batch adsorption experiments are carried out at different pH, initial concentration, temperature, and contact time on the adsorption of methyl orange (MO) by S‐doped MMC. The kinetic data of the adsorption process are better fitted with pseudo‐second‐order model than the pseudo‐first‐order model. Langmuir model is more suitable for the equilibrium data than Freundlich model. The thermodynamic parameters including ΔG0, ΔH0, and ΔS0 indicate that the adsorption is a feasible, spontaneous, and endothermic process. Finally, it is found that the coexistence of PO43−, NO3−, SO42−, Cl−, and CO32− does not influence the adsorption process. These results illustrate S‐doped MMC can be an efficient adsorbent for the removal of MO from wastewater.
中文翻译：
S掺杂的磁介孔碳可有效吸附水溶液中的甲基橙
开发了一种简单，快速的软模板与单罐溶剂热法相结合的方法，以合成S掺杂的磁介孔碳（S掺杂的MMC）。在这种方法中，酚醛树脂用作碳前体，Pluronic共聚物P123作为模板，2,5-二巯基-1,3,4-噻二唑用作硫源。制备的S掺杂MMC处理高比表面积的Fe 3 O 4颗粒良好地嵌入具有强磁响应的中孔碳壁中，水合硝酸铁的负载量为0.808 g最佳。分批吸附实验是在不同的pH，初始浓度，温度和接触时间下进行的S掺杂MMC吸附甲基橙（MO）的实验。拟二阶模型比拟一阶模型更适合吸附过程的动力学数据。与Freundlich模型相比，Langmuir模型更适合平衡数据。包括ΔG 0，ΔH 0和ΔS 0的热力学参数表明吸附是可行，自发和吸热的过程。最后，发现PO的共存4 3-，NO 3 -，SO 4 2-，氯-和CO 3 2-不影响吸附过程。这些结果表明，掺S的MMC可以作为一种有效的吸附剂，用于去除废水中的MO。
更新日期：2021-01-05
中文翻译：
S掺杂的磁介孔碳可有效吸附水溶液中的甲基橙
开发了一种简单，快速的软模板与单罐溶剂热法相结合的方法，以合成S掺杂的磁介孔碳（S掺杂的MMC）。在这种方法中，酚醛树脂用作碳前体，Pluronic共聚物P123作为模板，2,5-二巯基-1,3,4-噻二唑用作硫源。制备的S掺杂MMC处理高比表面积的Fe 3 O 4颗粒良好地嵌入具有强磁响应的中孔碳壁中，水合硝酸铁的负载量为0.808 g最佳。分批吸附实验是在不同的pH，初始浓度，温度和接触时间下进行的S掺杂MMC吸附甲基橙（MO）的实验。拟二阶模型比拟一阶模型更适合吸附过程的动力学数据。与Freundlich模型相比，Langmuir模型更适合平衡数据。包括ΔG 0，ΔH 0和ΔS 0的热力学参数表明吸附是可行，自发和吸热的过程。最后，发现PO的共存4 3-，NO 3 -，SO 4 2-，氯-和CO 3 2-不影响吸附过程。这些结果表明，掺S的MMC可以作为一种有效的吸附剂，用于去除废水中的MO。
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