Show simple item record

dc.contributor.authorDai, LZ
dc.contributor.author戴李宗
dc.contributor.authorXu, YT
dc.contributor.author许一婷
dc.contributor.authorGal, JY
dc.contributor.authorWu, HH
dc.contributor.author吴辉煌
dc.date.accessioned2012-05-13T01:26:42Z
dc.date.available2012-05-13T01:26:42Z
dc.date.issued2002
dc.identifier.citationCHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2002,23(7):1404-1408zh_CN
dc.identifier.issn0251-0790
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/12369
dc.description.abstractBy comparing the redox potentials of poly-2,5-dimethoxyaniline (PDMAn), poly-o-toluidine (POT) and poly-m-chloroaniline(PmClAn) membrane modified electrodes, the morphology and crystal face orientation of Pt deposited on these polymers and isopropanol oxidation behavior on the platinized polyaniline electrodes, the relation of electrochemical properties of polyanilines to ring-substituted groups in the polymers and the influence of different polyaniline on Pt deposition and the catalytic properties of platinized polyaniline modified electrodes were discussed in terms of the electronic and steric effects. The results indicated that among 3 polyanilines, the redx potential of PDMAn was the most negative, and that of POT was less negative, and that of PmClAn was the most positive. The electrodeposition mechanisms of Pt particles on POT and on PDMAn membranes were different from that on PmClAn membrane. The Pt particles deposited on polyanilines were inclined towards the preferred-orientation of Pt(200) crystal face, but the degree of preferred orientation depended on polymers. The preferred orientation on POT was stronger than that on PDMAn, and the weakest on PmClAn. The potentials of isopropanol oxidation on platinized polyaniline modified electrodes rely on the nature of polyanilines matrix. On POT modified electrode the isopropanol oxidation mainly occurs in the potential region where POT is electroactive, but on PDMAn and PmClAn modified electrodes it takes place in the potential region same as that on Pt. It follows that polymer matrix was not only as disperse media of Pt particles, but also exerts catalytic actions.zh_CN
dc.language.isozhzh_CN
dc.publisherHIGHER EDUCATION PRESSzh_CN
dc.subjectring-substituted polyanilineszh_CN
dc.subjectmetal-polymer compositezh_CN
dc.subjectisopropanol electrooxidationzh_CN
dc.subjectchemically modified electrodeszh_CN
dc.titleEffects of ring-substituted groups on the properties of metallized polyaniline membrane modified electrodezh_CN
dc.typeArticlezh_CN


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record