التفاصيل البيبلوغرافية
| العنوان: |
Preparation and characterization of Pd/Fe bimetallic nanoparticles immobilized on Al2O3/PVDF membrane: Parameter optimization and dechlorination of dichloroacetic acid. |
| المؤلفون: |
Lijuan Zhang1, Zhaohong Meng1 mengzhaohong1973@163.com, Shuying Zang1 |
| المصدر: |
Journal of Environmental Sciences (Elsevier). May2015, Vol. 31, p194-202. 9p. |
| مصطلحات موضوعية: |
*METAL nanoparticles, *POLYVINYLIDENE fluoride, *POLYMERIC membranes, *PARAMETER estimation, *DECHLORINATION (Chemistry), *CHLOROACETIC acids |
| مستخلص: |
Using a liquid-solid phase inversion method, a hybrid matrix poly(vinylidene fluoride) (PVDF) membrane was prepared with alumina (Al2O3) nanoparticle addition. Pd/Fe nanoparticles (NPs) were successfully immobilized on the Al2O3/PVDF membrane, which was characterized by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The micrographs showed that the Pd/Fe NPs were dispersed homogeneously. Several important experimental parameters were optimized, including the mechanical properties, contact angle and surface area of Al2O3/PVDF composite membranes with different Al2O3 contents. At the same time, the ferrous ion concentration and the effect of hydrophilization were studied. The results showed that the modified Al2O3/PVDF membrane functioned well as a support. The Al2O3/PVDF membrane with immobilized Pd/Fe NPs exhibited high efficiency in terms of dichloroacetic acid (DCAA) dechlorination. Additionally, a reaction pathway for DCAA dechlorination by Pd/Fe NPs immobilized on the Al2O3/PVDF membrane system was proposed. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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