tailieunhanh - vFacile Fabrication of Uniform Polyaniline Nanotubes with Tubular Aluminosilicates as Templates"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Facile Fabrication of Uniform Polyaniline Nanotubes with Tubular Aluminosilicates as Templates | Nanoscale Res Lett 2008 3 299-302 DOI s11671-008-9155-z NANO EXPRESS Facile Fabrication of Uniform Polyaniline Nanotubes with Tubular Aluminosilicates as Templates Long Zhang Peng Liu Received 28 July 2008 Accepted 4 August 2008 Published online 17 August 2008 to the authors 2008 Abstract The uniform polyaniline PANI nanotubes with inner diameter outer diameter and tubular thickness of 40 60 and 10 nm respectively were prepared successfully by using natural tubular aluminosilicates as templates. The halloysite nanotubes were coated with PANI via the in situ chemical oxidation polymerization. Then the templates were etched with HCl HF solution. The PANI nanotubes were characterized using FTIR X-ray diffraction and transmission electron microscopy. The conductivity of the PANI nanotubes was found to be X 10-5 X-cm -1. Keywords Polyaniline nanotube Fabrication Halloysite nanotube Template Introduction Conducting polymer nanotubes have recently become the object of numerous investigations because of their great potential in device applications such as transistors 1 sensors 2 actuators 3 batteries 4 and so on. The conducting polymer nanotubes can be chemically or electrochemically synthesized by the soft and hard template method. In the first approaches the micelles or assemblies produced by the salts of the organic acids L. Zhang P. Liu El State Key Laboratory of Applied Organic Chemistry and Institute of Polymer Science and Engineering College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People s Republic of China e-mail pliu@ such as naphthalenesulfonic acids 5 camphorsulfonic acid 6 2-acrylamido-2-methyl-1-propanesulfonic acid 7 sulfoxy-terminated dendrons 8 and polymeric acids 9 and aniline act as the soft templates. The polymerization at template interfaces would give rise to polyaniline PANI nanotubes. The inner diameters of the PANI nanotubes by the soft templates were difficult to control and sometimes the .