光催化双极膜水解离的研究  

Study of water splitting in interlayer of bipolar membrane by photo-catalyst

作　　者：陈强[1] 郑淑英[2] 陈晓[1] 郑曦[1] 陈震[1,2] 

机构地区：[1]福建师范大学化学与材料学院,福州350007 [2]宁德师范学院化学系,宁德352100

出　　处：《膜科学与技术》2011年第1期56-60,共5页Membrane Science and Technology

基　　金：福建省自然科学基金(D0710009)

摘　　要：在双极膜的中间层中涂布纳米尺寸的光催化剂TiO2和光敏剂蒽醌(Anthraquinone,缩写为Anth),制得三明治式的双极膜.用扫描电镜(SEM),电化学工作站等对制得的膜进行了表征.实验结果表明,在紫外光照射下,以TiO2-Anth修饰的双极膜表现出更高的水解离效率及氢离子和氢氧根离子的渗透率,阻抗减小,工作电压降低等特点.当工作电流密度达125 mA/cm2时,电槽工作电压小于5.0 V.How to promote water splitting at the intermediate layer and lower the IR drop of bipolar membrane （BPM） is the focus of BPM research. In the interlayer of bipolar membrane modified with nanometer sized TiO2 as a photo-catalyst and Anthraquinone （abbreviated as Anth） as a photosensitizer. SEM and electrochemical workstation were used to characterize the BPMs. Experimental results showed that, the sandwich-type BPM exhibited a several good properties： a higher efficiency for the water splitting in the in terlayer, a higher operation current density, lower impedance and working voltage. When the working current density is at 125 mA/cme, the working voltage is as low as 5.0 V under the UV illumination.

关 键 词：双极膜 羧甲基纤维素钠 壳聚糖 二氧化钛 蒽醌 光催化 

分 类 号：TQ028.8[化学工程]