Preparation and Characterization of Amino-Modified Mxene Intermediate Layer Bipolar Membranes
Bipolar membrane electrodialysis has been widely used in environmental engineering, resource recovery, energy storage and conversion. As one of the core components of bipolar membrane electrodialysis, the performance of bipolar membrane electrodialysis is very important. Here, the amino-modified MXene (MXene-NH2) was prepared through the re-action of (3-aminopropyl) -triethoxysilane with MXene Ti3C2Tx. Characterization results of XRD, EDS, XPS etc. showed that MXene-NH2 was successfully prepared. Using MXene-NH2 as the intermediate layer, sulfonated polyphenyl ether (SP-PO) as the cation exchange layer, and quaternary ammonium polyphenyl ether (QPPO) as the anion exchange layer, bipo-lar membranes were prepared and characterized by I-V curve, stability, electrodialysis, etc. Results showed that the alkali production rate of the bipolar membrane was fast when the additive amount of MXene-NH2 was 0.3％. After 180 min opera-tion, the alkali concentration in the alkali chamber increased by 0.0788 mol/L. When the addition amount of MXene-NH2 is 0.5％, the hydrolysis ionization is low and the stability is excellent.
万方数据
维普
