PVDF膜载Pd/Fe催化剂制备及性能研究  

Study on performance and preparation of PVDF membrane-immobilized Pd/Fe catalyzer

作　　者：刘岩[1] 孟昭虹[1,2] 刘惠玲[1] 王向宇[1] 陈超[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]哈尔滨师范大学地理科学学院,哈尔滨150025

出　　处：《哈尔滨商业大学学报（自然科学版）》2009年第6期672-676,共5页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：采用对PVDF膜载体亲水化处理后涂敷方法和直接原位聚合方法制备不同的PVDF膜载纳米Pd/Fe双金属催化剂,通过扫描电镜(SEM)对膜的表面形态进行表征结果表明,亲水化处理与交联处理影响了复合膜上纳米钯/铁双金属颗粒的分散状态,膜载铁量的测定进一步证明,经过亲水化处理涂敷方法比原位聚合方法在载铁量上更具有优势,不同膜对一氯乙酸脱氯研究表明,Pd/Fe还原膜对微量一氯乙酸均具有一定的降解能力,相比原位聚合工艺的降解率60.5%,涂敷方法降解率可达77%.就本实验条件对比发现,浸涂工艺具有一定的实际应用前景,经改性后的PVDF膜载纳米Pd/Fe双金属体系对于降解含氯有机物也具有一定的实用价值.In this paper, two kinds of modified PVDF membrane-immobilized Pd/Fe nanoparticles by hydrophilization dip-coating method, in situ method respectively are prepared and characterized, two kinds of modified PVDF membrane-immobilized Pd/Fe nanoparticles are used to dechlorinate monochloroacetic acid, the morphology of membrane-immobilized Pd/Fe by scanning electron microscope （SEM） is characterized. Through the research, it is found that the distribution of Pd/Fe nanoparticles is best and the dechlorination effect of monochloracetic acid is the highest in hydrophilization PVDF membrane-immobilized Pd/Fe nanoparticles. Compares to in situ process of the degradation rate of 60.5%, degradation rate of hydrophilization dip-coating method is up to 77%. Modified PVDF membrane-immobilized Pd/Fe nanoparticles by hydrophilization dip-coating method for the degradation of chlorinecontaining organic compounds also have some practical value.

关 键 词：PVDF 膜载纳米Pd/Fe PAA 一氯乙酸 

分 类 号：X131[环境科学与工程—环境科学]