应用化学 ›› 2023, Vol. 40 ›› Issue (5): 749-757.DOI: 10.19894/j.issn.1000-0518.220406

• 研究论文 • 上一篇    下一篇

硫辛酸修饰钛酸纳米管吸附亚甲基蓝的性能

郝晨丽1, 丁庆伟1, 贾世昌1, 毛泱博2, 王松柏3, 马骏1()   

  1. 1.太原科技大学环境与资源学院,太原 030024
    2.太原科技大学重型机械教育部工程研究中心,太原 030024
    3.山西大学化学化工学院,太原 030006
  • 收稿日期:2022-12-16 接受日期:2023-03-28 出版日期:2023-05-01 发布日期:2023-05-26
  • 通讯作者: 马骏
  • 作者简介:第一联系人:共同第一作者
  • 基金资助:
    山西省回国留学人员科研项目(2021-011);山西省自然科学基金(201901D111249);太原科技大学博士科研启动基金(20192012);国家级山西省大学生创新创业训练计划项目资助(202210109014)

Adsorption of Methylene Blue on Titanate Nanotubes Modified with Lipoic Acid

Chen-Li HAO1, Qing-Wei DING1, Shi-Chang JIA1, Yang-Bo MAO2, Song-Bai WANG3, Jun MA1()   

  1. 1.School of Environment and Resources,Taiyuan University of Science and Technology,Taiyuan 030024,China
    2.Engineering Research Center of Heavy Machinery of Ministry of Education,Taiyuan University of Science and Technology,Taiyuan 030024,China
    3.School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,China
  • Received:2022-12-16 Accepted:2023-03-28 Published:2023-05-01 Online:2023-05-26
  • Contact: Jun MA
  • About author:junma0888@tyust.edu.cn
  • Supported by:
    Shanxi Scholarship Council of China(2021-011);the Natural Science Foundation of Shanxi Province(201901D111249);the Doctoral Starting up Foundation of Taiyuan University of Science and Technology(20192012);the College Student's Innovative Entrepreneurial Training Plan Program(202210109014)

摘要:

在水热法制备钛酸纳米管(Titanate nanotubes,TNTs)的基础上,再通过浸渍法将硫辛酸(Lipoic acid,LA)修饰到钛酸纳米管上,得到硫辛酸修饰的钛酸纳米管(TNTs-LA)。通过扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射(XRD)、X光电子能谱仪(XPS)和傅里叶变换红外光谱(FT-IR)等仪器对材料进行表征,并以亚甲基蓝(MB)的吸附实验评价其吸附性能。结果表明,TNTs-LA对MB的吸附主要集中于前30 min,60 min可达吸附平衡。MB的去除与溶液pH值有关,且符合二级反应动力学方程,吸附过程是一个多种机制共同作用的结果。Langmuir等温模型拟合得出TNTs-LA对MB的最大吸附量为216.98 mg/g,有较高的吸附能力。

关键词: 钛酸纳米管, 硫辛酸, 亚甲基蓝, 吸附

Abstract:

In this paper, titanate nanotubes (TNTs) are prepared by hydrothermal method, and then the titanate nanotubes (TNTs-LA) are modified with lipoic acid by impregnation method. The structure of TNTs-LA is characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and infrared spectroscopy (FT-IR), and the adsorption performance of methylene blue (MB) is evaluated. The results show that the adsorption performance of titanate nanotubes modified with lipoic acid is obviously enhanced. The removal of MB is also related to the pH of solution. The kinetic study shows that the adsorption kinetics of MB by titanate nanotubes accords with the second-order kinetic equation. The maximum adsorption capacity of MB on TNTs-LA is 216.98 mg/g by Langmuir adsorption isotherm model.

Key words: Titanate nanotubes, Lipoic acid, Methylene blue, Adsorption

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