Construction of a Two-Dimensional GO/Ti<sub>3</sub>C<sub>2</sub>T<sub>X</sub> Composite Membrane and Investigation of Mg<sup>2+</sup>/Li<sup>+</sup> Separation Performance
Zhenhua Feng,
Chengwen Liu,
Binbin Tang,
Xiaojun Yang,
Wenjie Jiang,
Peng Wang,
Xianjun Tang,
Hongshan Wang,
Xiangdong Zeng,
Guangyong Zeng
Affiliations
Zhenhua Feng
Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province, Chengdu Mineral Resources Supervision and Testing Center, Ministry of Land and Resources, Chengdu 610081, China
Chengwen Liu
College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
Binbin Tang
Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province, Chengdu Mineral Resources Supervision and Testing Center, Ministry of Land and Resources, Chengdu 610081, China
Xiaojun Yang
Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province, Chengdu Mineral Resources Supervision and Testing Center, Ministry of Land and Resources, Chengdu 610081, China
Wenjie Jiang
Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province, Chengdu Mineral Resources Supervision and Testing Center, Ministry of Land and Resources, Chengdu 610081, China
Peng Wang
Sichuan Salt Geology Drilling Team (Sichuan Mineral Salt Mining Engineering Technology Research Center), Zigong 643000, China
Xianjun Tang
Sichuan Salt Geology Drilling Team (Sichuan Mineral Salt Mining Engineering Technology Research Center), Zigong 643000, China
Hongshan Wang
College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
Xiangdong Zeng
College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
Guangyong Zeng
College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
Graphene oxide (GO) two-dimensional (2D) membranes with unique layer structures and tunable layer spacing have special advantages and great potential in the field of water treatment. However, GO membranes face the issues of weak anti-swelling ability as well as poor permeability. We prepared GO/Ti3C2TX 2D composite membranes with 2D/2D structures by intercalating Ti3C2TX nanosheets with slightly smaller sizes into GO membranes. Ti3C2TX intercalation can effectively expand the layer spacing of GO, thereby substantially enhancing the flux of the composite membrane (2.82 to 6.35 L·m−2·h−1). Moreover, the GO/Ti3C2TX composite membrane exhibited a good Mg2+/Li+ separation capability. For the simulated brine, the separation factor of M2 was 3.81, and the salt solution flux was as high as 5.26 L·m−2·h−1. Meanwhile, the incorporation of Ti3C2TX nanosheets significantly improved the stability of GO/Ti3C2TX membranes in different pH environments. This study provides a unique insight into the preparation of highly permeable and ion-selective GO membranes.
