One-Step Synthesis of Au/PEDOT/beta-Fe3+O(OH, Cl) Nanospindles in Aqueous Solution
作者：Hui Mao, Xiaofeng Lu, Xincai Liu, Jun Tang, Ce Wang and Wanjin Zhang
關鍵字：SOLID-STATE SYNTHESIS; PEDOT/BETA-FE3+O(OH,CL) NANOSPINDLES; INTERFACIAL POLYMERIZATION; CHEMICAL-SYNTHESIS; POLYANILINE; NANOTUBES; 3,4-ETHYLENEDIOXYTHIOPHENE; NANOPARTICLES; POLYPYRROLE; NANOFIBERS
論文來源：期刊
具體來源：JOURNAL OF PHYSICAL CHEMISTRY C
發表時間：2010年
A kind of unique noble metal/polymer/inorganic compound nanostructured complex, poly(3,4-ethylenedioxythiophene) (PEDOT)/β-Fe3+O(OH, Cl) nanospindle containing Au nanoparticles (Au/PEDOT/β-Fe3+O(OH, Cl) composite nanospindle), was successfully synthesized in the presence of cetyltrimethylammonium bromide and poly(acrylic acid) in aqueous solution using only a one-step process. Their length and width were in the range of 190?280 and 30?50 nm, respectively. Transmission electron microscopy images and electron diffraction patterns of single Au/PEDOT/β-Fe3+O(OH, Cl) composite nanospindle indicated the existence of Au nanoparticles in the complex and highly ordered single crystals of beta-akaganeite (β-Fe3+O(OH, Cl)) in the nanospindles, which were further confirmed by X-ray diffraction patterns. Furthermore, on the basis of the results of different experiments, a possible mechanism concerning the formation of Au/PEDOT/β-Fe3+O(OH, Cl) composite nanospindles was also proposed. During the formation of PEDOT/β-Fe3+O(OH, Cl) nanospindles, the polymerization of 3,4-ethylenedioxythiophene (EDOT) and the hydrolyzation of FeCl3 occurred simultaneously in aqueous solution, and after the addition of HAuCl4·4H2O aqueous solution into the reaction system, Au nanoparticles were in situ reduced by unreacted EDOT monomer or PEDOT oligomers to form PEDOT/β-Fe3+O(OH, Cl) nanospindles. If PEDOT/β-Fe3+O(OH, Cl) nanospindles were synthesized first, Au nanoparticles could not be embedded into the nanospindles by postsynthesis method due to the highly ordered crystallinity of beta-akaganeite. This new kind of unique noble metal/polymer/inorganic compound nanostructured complex could act as a good steady electrode material due to its good repeatability of cyclic voltammetry responses for electrocatalytic oxidation of D-ascorbic acid.