Zahran Elsayed M, Bhattacharyya Dibakar, Bachas Leonidas G
Department of Chemistry, University of Kentucky, Lexington, KY, 40506, USA.
Department of Chemical and Material Engineering, University of Kentucky, Lexington, KY, 40506, USA.
J Mater Chem. 2011 Jul 28;21(28):10454-10462. doi: 10.1039/c1jm11435b. Epub 2011 Jun 11.
We described the synthesis and characterization of a new class of bimetallic nanotubes based on Pd/Fe and demonstrated their efficacy in the dechlorination of PCB 77, a polychlorinated biphenyl. Onedimensional iron metal nanotubes of different diameters were prepared by electroless deposition within the pores of PVP-coated polycarbonate membranes using a simple technique under ambient conditions. The longitudinal nucleation of the nanotubes along the pore walls was achieved by mounting the PC membrane between two halves of a U-shape reaction tube. The composition, morphology, and structure of the Pd/Fe nanotubes were characterized by transmission electron microscopy, scanning electron microscopy, inductively coupled plasma-atomic emission spectroscopy, and X-ray powder diffraction spectroscopy. The as-prepared Pd/Fe bimetallic nanotubes were used in dechlorination of 3,3',4,4'-tetrachlorobiphenyl (PCB 77). In comparison with Pd/Fe nanoparticles, the Pd/Fe nanotubes demonstrated higher efficiency and faster dechlorination of the PCB.
我们描述了一类基于钯/铁的新型双金属纳米管的合成与表征，并证明了它们在多氯联苯之一的77号多氯联苯脱氯中的功效。采用简单技术在环境条件下通过化学镀在聚乙烯吡咯烷酮涂层聚碳酸酯膜的孔内制备了不同直径的一维铁金属纳米管。通过将聚碳酸酯膜安装在U形反应管的两半之间，实现了纳米管沿孔壁的纵向成核。通过透射电子显微镜、扫描电子显微镜、电感耦合等离子体原子发射光谱和X射线粉末衍射光谱对钯/铁纳米管的组成、形态和结构进行了表征。将制备好的钯/铁双金属纳米管用于3,3',4,4'-四氯联苯（77号多氯联苯）的脱氯。与钯/铁纳米颗粒相比，钯/铁纳米管对多氯联苯的脱氯效率更高、速度更快。
