天津工业大学学报2017，Vol.36Issue(4)：1-7,7.DOI:10.3969/j.issn.1671-024x.2017.04.001
PVDF/PAA@Pd催化膜的制备及性能表征
Preparation and property characterization of PVDF/PAA@Pd catalytic membrane
摘要
Abstract
In order to provide the PVDF membrane with good catalytic performance, the PVDF was modified. PAA microspheres were synthesized through free radical polymerization. Then, PVDF/PAA blend membrane was prepared by blending PAA microspheres with PVDF powders. Finally, PVDF/PAA@Pd catalytic membrane was prepared by loading the Pd nanoparticles in blend membrane via in-situ reduction method. The catalytic membranes were characterized through FTIR, SEM and EDX. The catalytic performance of PVDF/PAA@Pd catalytic membrane was studied through the reduction reaction of 4-nitrophenol by NaBH4. The results indicated that the PAA and Pd nanoparticles were successfully immobilized in PVDF membrane. The reaction rate is controlled by the chemical reation occurring on the surface of Pd nanoparticles, and increases with increasing the amount of Pd nanoparticles in catalytic membrane. Meanwhile, with the operating pressure increasing, the reaction rate firstly increases (≤0.3 MPa) and then decreases (≥0.3 MPa). In the recycle test, the conversion rates of 1-5 times are 100%, and those of 6-10 times are more than 96%, and this indicates that the catalytic membrane has good catalytic stability.关键词
Pd纳米粒子/PVDF膜/催化/4-硝基苯酚Key words
Pd nanoparticles/PVDF membrane/catalytic/4-nitrophenol分类
化学化工引用本文复制引用
陈熙,董华琳,马胜奎,袁千玄,王爽,王文强..PVDF/PAA@Pd催化膜的制备及性能表征[J].天津工业大学学报,2017,36(4):1-7,7.基金项目
国家自然科学基金资助项目(51003076,51403149) （51003076,51403149）
天津市自然科学基金资助项目(14JCZDJC38100) （14JCZDJC38100）
