广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2014年
22期
47-50
,共4页
纳米二氧化钛%双极膜%改性%乙醛酸%丁二酸
納米二氧化鈦%雙極膜%改性%乙醛痠%丁二痠
납미이양화태%쌍겁막%개성%을철산%정이산
nano-TiO2%bipolar membrane%modification%glyoxylic acid%succinic acid
以聚乙烯醇(PVA)和羧甲基纤维素钠(CMC)混合制成阳膜层材料，以聚乙烯醇和壳聚糖(CS)混合制成阴膜层材料。分别用氯化铬、戊二醛对阳膜、阴膜进行交联改性，并在阴阳膜层间加入具有光催化活性的纳米二氧化钛，得mCMC/TiO2/mCS双极膜。该双极膜在紫外光照射下，具有高的水解离效率，优良的亲水性能，双极膜阻抗小，工作电压低，并将该膜应用于合成乙醛酸和丁二酸体系中。
以聚乙烯醇(PVA)和羧甲基纖維素鈉(CMC)混閤製成暘膜層材料，以聚乙烯醇和殼聚糖(CS)混閤製成陰膜層材料。分彆用氯化鉻、戊二醛對暘膜、陰膜進行交聯改性，併在陰暘膜層間加入具有光催化活性的納米二氧化鈦，得mCMC/TiO2/mCS雙極膜。該雙極膜在紫外光照射下，具有高的水解離效率，優良的親水性能，雙極膜阻抗小，工作電壓低，併將該膜應用于閤成乙醛痠和丁二痠體繫中。
이취을희순(PVA)화최갑기섬유소납(CMC)혼합제성양막층재료，이취을희순화각취당(CS)혼합제성음막층재료。분별용록화락、무이철대양막、음막진행교련개성，병재음양막층간가입구유광최화활성적납미이양화태，득mCMC/TiO2/mCS쌍겁막。해쌍겁막재자외광조사하，구유고적수해리효솔，우량적친수성능，쌍겁막조항소，공작전압저，병장해막응용우합성을철산화정이산체계중。
Polyvinyl alcohol solution and sodium carboxymethyl cellulose solution was mixed to be cation exchange membrane, while polyvinyl alcohol solution and chitosan solution was mixed to be anion exchange membrane. The mCMC/TiO2/mCS bipolar membrane was prepared by CMC and CS modified by glutaraldehyde and chromium chloride, respetively, and nano-TiO2 with photocatalytic activity between cation exchange membrane layer and anion exchange membrane layer. The BPM exhibited an excellent hydrophilic performance, lower impedance and working voltage with UV irradiation and the BPM was applied to the synthesis of glyoxalic acid and succinic acid in the system.
