熔盐中多级孔碳的合成及其在染料吸附中的应用。
Synthesis of Hierarchical Porous Carbon in Molten Salt and Its Application for Dye Adsorption.
作者信息
Li Saisai, Zhang Haijun, Hu Shiya, Liu Jie, Zhu Qing, Zhang Shaowei
机构信息
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China.
College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK.
出版信息
Nanomaterials (Basel). 2019 Jul 31;9(8):1098. doi: 10.3390/nano9081098.
Hierarchical porous carbon was successfully synthesized from glucose in a molten salt at 800 °C for 2 h. It was amorphous and contained numerous oxygen containing functional groups on its surface. The porous carbon with 1.0 wt% Fe(NO)·9HO oxidizing agent showed the highest specific surface area of 1078 m/g, and the largest pore volume of 0.636 cm/g, among all of the samples. Raman and TEM results revealed that it had more defects and pores than other as-prepared carbon materials. The adsorption capacities of as-prepared porous carbon for methylene blue (MB) and methyl orange (MO) were 506.8 mg/g and 683.8 mg/g, respectively. The adsorption isotherms fit the Langmuir model and the adsorption kinetics followed the pseudo-second-order kinetic model.
通过在800℃的熔盐中以葡萄糖为原料成功合成了分级多孔碳，反应时间为2小时。它是非晶态的，表面含有大量含氧官能团。在所有样品中，添加1.0 wt% Fe(NO)·9HO氧化剂的多孔碳具有最高的比表面积，为1078 m/g，最大孔容为0.636 cm/g。拉曼和透射电子显微镜结果表明，与其他制备的碳材料相比，它具有更多的缺陷和孔隙。制备的多孔碳对亚甲基蓝（MB）和甲基橙（MO）的吸附容量分别为506.8 mg/g和683.8 mg/g。吸附等温线符合朗缪尔模型，吸附动力学遵循准二级动力学模型。
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