In situ synthesis of novel peroxo-functionalized Ti3C2Tx adsorbent for aqueous pollutants removal: Role of oxygen-containing terminal groups

Zhifeng Li; Jie Li; Jie Tan; Mengyun Jiang; Shuhan Fu; Tingting Zhang; Xiaohui Wang

doi:10.1016/j.chemosphere.2021.131801

In situ synthesis of novel peroxo-functionalized Ti₃C₂T_x adsorbent for aqueous pollutants removal: Role of oxygen-containing terminal groups

Chemosphere. 2022 Jan;286(Pt 2):131801. doi: 10.1016/j.chemosphere.2021.131801. Epub 2021 Aug 4.

Authors

Zhifeng Li¹, Jie Li¹, Jie Tan¹, Mengyun Jiang¹, Shuhan Fu¹, Tingting Zhang², Xiaohui Wang³

Affiliations

¹ Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
² Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China. Electronic address: zhangtt@mail.buct.edu.cn.
³ Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China; Beijing Engineering Research Center of Environmental Material for Water Purification, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China. Electronic address: xhwang@mail.buct.edu.cn.

PMID: 34371352
DOI: 10.1016/j.chemosphere.2021.131801

Abstract

A novel peroxo-functionalized Ti₃C₂T_x adsorbent with abundant surface termination groups was facilely prepared in situ to remove aqueous anionic and cationic dyes. The adsorption behavior of methylene blue on peroxo-functionalized Ti₃C₂T_x was systematically investigated by adsorption kinetics, isotherms, and thermodynamics. Compared with Ti₃C₂T_x, the adsorption capacities of peroxo-functionalized Ti₃C₂T_x for cationic dyes methylene blue (558.0 mg g^-1), rhodamine B (524.6 mg g^-1) and anionic dyes methyl orange (292.6 mg g^-1), congo red (258.2 mg g^-1) were increased at room temperature without adjustment of pH, background ions and humic acid, etc of the contaminant solution by 7.9, 5.3, 5.9 and 4.6 times, respectively. In addition, peroxo-functionalized Ti₃C₂T_x could well tolerate the effects of pH, ionic strength, and humic acid. As revealed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy, the adsorption mechanism of peroxo-functionalized Ti₃C₂T_x for anionic and cationic dyes was mainly attributed to the electrostatic interaction, hydrogen bonding interaction, and noncovalent surface-π attraction interaction. This study demonstrates a facile modification strategy for Ti₃C₂T_x adsorbent materials and aims to provide insights for the development of excellent Ti₃C₂T_x-based adsorbent materials.

Keywords: Adsorption mechanism; Dyes; Oxygen-containing terminal groups; Peroxo-functionalized Ti(3)C(2)T(x); Ti(3)C(2)T(x).

MeSH terms

Adsorption
Coloring Agents
Environmental Pollutants*
Hydrogen-Ion Concentration
Kinetics
Methylene Blue
Oxygen
Spectroscopy, Fourier Transform Infrared
Titanium
Water Pollutants, Chemical* / analysis

Substances

Coloring Agents
Environmental Pollutants
Water Pollutants, Chemical
Titanium
Oxygen
Methylene Blue