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分别用八羧基铜酞菁[CuPc(COOH)8]和四氨基铜酞菁(CuTAPc)改性海藻酸钠(SA)阳膜层和壳聚糖(CS)阴膜层,制备了CuPc(COOH)8-SA/CuTAPc-CS双极膜.实验结果表明,经八羧基铜酞菁和四氨基铜酞菁改性后,促进了双极膜中间层水的解离,增大了阳离子交换膜层和阴离子交换膜层的离子交换容量及H+和OH-的透过率.与Fe3+改性的Fe-SA/mCS双极膜相比,CuPc(COOH)8-SA/CuTAPc-CS双极膜的阻抗、电阻压降(即IR降)和溶胀度降低.当电流密度高达120 mA/cm2时,CuPc(COOH)8-SA/CuTAPc-CS双极膜的IR降仅为0.9 V.
CuPc (COOH) was prepared by modification of sodium alginate (SA) and chitosan (CS) layers with octacarboxy copper phthalocyanine [CuPc (COOH) 8] and tetraaminopiperazine phthalocyanine (CuTAPc) ) 8-SA / CuTAPc-CS bipolar membrane.The experimental results show that the modification of the octa-carboxyl copper phthalocyanine and the tetra-aminocopper phthalocyanine promotes the dissociation of the water in the bipolar membrane and increases the cation exchange membrane The ion exchange capacity and the H + and OH- transmittance of the layers and anion exchange membranes were comparable to that of CuPc (COOH) 8-SA / CuTAPc-CS bipolar membranes compared to the Fe3 + modified Fe-SA / (IR drop) and swelling degree of the bipolar CuPc (COOH) 8-SA / CuTAPc-CS bipolar membrane were only 0.9 V when the current density was as high as 120 mA / cm 2.