Preparation And Characterization Of Nano-structured Materials

There has been considerable interest in preparing nano—structures materials such as nano。tubes,nano。wires,etc．Among various nano—material fabrication strategies,template synthesis as an important method has successfully played a crucial role in nano—areas．Among the different kinds of templates,the AAO template compared with other templates has proved to be a versatile approach and an inexpensive technique,and the used AAO template controlled the size shapes and structural properties of the synthesized material．Especially the electronic conductivity of the polymer prepared by template-synthesized method has over an order of magnitude compared to bulk samples(e．g．powders,or thin films)of the same polymer．However,the quanti~of yield is less by the AAO template than other methods,and the template-synthesized method needs the template—removi ng steps．So,it is the key to develop a method,which can fabricate not only the nano—tubes or nano．wires but alsO nO template-removing steps needed． In this paper,we prepared the aniline／o-toluidine conducting copolymer and Ni(OH)2 nano-tube using the AAO template—synthesis method．These materials were characterized bv scanning electron microscopy(SEM),transmission electron microscopy(TEM),Fourier transfer infrared(FT-IR)and UV-VIS／NIR spectra,etc．Furthermore,different doping polyaniline(PANI-CSA,PANI-NSA,poly(AN!一C0一OABSA))nano—tubes or nano—wires have been fabricated by interfaciaI polylllerization(1P)witlloul t11e need for tempiates．Experiments on their mOrphology,strLlcture and characterization Were carrled out．The main resuits may be liSted as below: 1.The aniline and O-toluidine copolymer nano-tubes were fabricated by using AAO template,and the conductiVily is Iower than of the PANI,but the solubility greatlymproVement.HoweVer,the obtained copolYmers nano-tubes in AAO can sharply improve theconductivity tO l7.4 S cm-1．which has two order of magnitude compared to copolymer particle(only to 9.62×10-2S cm-1)in the same ratio．So,it can make up for the flaw caused by the-CH3 group． 2．The Ni(OH)2 nano-tubes were fabricated in AAO template by a electrochemical method． Firstly,the nickel electrode was oxidized to Ni2+．which turned into the NiHCNFe with the K3Fe(CN)6 in the AAO template．Secondly,the NiHCNFe／AAO Was immersed into NaOH solution to dissolved the template,at same time the NiHCNFe take the reaction with the NaOH to Ni(OH)2,which was characterized by SEM,TEM,IR and XRD spectra． 3．On the base of template-synthesized method,we fabricated different doping PANI nano-tubes(including the PANI-CSA,PANI-NSA,poly(ANl-CO-OABSA))using the IP method, and discussed the formation mechanism of the tubular morphology．It is found that the lower monomer concentration is liable to the formation of nano-tube．Furthermore,the nano．tubular materials have better electrochemical capacitance performance compared tO the granular materials． 4．Furthermore,we fabricated a water-soluble conductive copolymer(poly(pyrrolyl methane)),which characterized by SEM,IR and UV-Vis spectra,and the conductivity of copolymer was measured．It is found the copolymer has the conductive characterization．Although conductivity of the copolymer is lower than that of PANI,the copolymer solved the insolubility of some conductive polymers．...