MXene/Cellulose Hydrogel Composites: Preparation and Adsorption Properties of Pb2

Qiang Yang; Jia Zhang; Hairong Yin; Junkang Guo; Shenghua Lv; Yaofeng Li

doi:10.3390/polym16020189

MXene/Cellulose Hydrogel Composites: Preparation and Adsorption Properties of Pb²

Polymers (Basel). 2024 Jan 8;16(2):189. doi: 10.3390/polym16020189.

Authors

Qiang Yang¹, Jia Zhang^{2

3}, Hairong Yin², Junkang Guo⁴, Shenghua Lv⁵, Yaofeng Li³

Affiliations

¹ Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, China.
² School of Materials Science & Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
³ College of Chemistry and Materials Science, Weinan Normal University, Weinan 714099, China.
⁴ School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
⁵ College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.

Abstract

In this work, acrylic cellulose hydrogel, a typical natural polymer adsorbent, was modified using MXene through in situ polymerization to create a synthetic inorganic-polymer composite known as MXene/cellulose hydrogel. FTIR, XRD, SEM, and thermogravimetric analyses were applied to characterize the chemical structure and micromorphology. The MXene/cellulose hydrogel was utilized for the removal of Pb²⁺ from wastewater. Under optimal experimental conditions (initial Pb²⁺ concentration of 0.04 mol/L, adsorption time of 150 min, pH = 5.5, and MXene doping content of 50% at 30 °C), a maximum adsorption capacity of 410.57 mg/g was achieved. The MXene/cellulose hydrogel corresponded with the pseudo-second-order kinetic equation model and exhibited a better fit with the Freundlich isotherm model.

Keywords: MXene; adsorbent; adsorption isotherm; cellulose hydrogel.

Grants and funding

Doctoral Start-up Fund of Weinan Normal University (20RC07), Yulin City science and technology plan project (190), Scientific Research Program of Shaanxi Provincial Education Department (No. 20JK0628), Shaanxi provincial college students innovation and entrepreneurship training program (S2020107230070), Natural Science Basic Research Project of Shaanxi Province (No. 2021JQ-825), National Science Foundation of China (31670593), Basic Research Program of Natural Science of Shaanxi Province (2021JQ-839), Innovation and Entrepreneurship Training Program for Chinese College Students (S202222396037).