<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Silveira, Celia M.</style></author><author><style face="normal" font="default" size="100%">Baur, Jessica</style></author><author><style face="normal" font="default" size="100%">Holzinger, Michael</style></author><author><style face="normal" font="default" size="100%">Moura, Jose J. G.</style></author><author><style face="normal" font="default" size="100%">Cosnier, Serge</style></author><author><style face="normal" font="default" size="100%">Gabriela Almeida, M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Enhanced Direct Electron Transfer of a Multihemic Nitrite Reductase on Single-walled Carbon Nanotube Modified Electrodes</style></title><secondary-title><style face="normal" font="default" size="100%">Electroanalysis</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Dec</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1002/elan.201000363</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">24</style></number><volume><style face="normal" font="default" size="100%">22</style></volume><pages><style face="normal" font="default" size="100%">2973-2978</style></pages><isbn><style face="normal" font="default" size="100%">1040-0397</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Single-walled carbon nanotubes (SWCNTs) deposits on glassy carbon and pyrolytic graphite electrodes have dramatically enhanced the direct electron transfer of the multihemic nitrite reductase from Desulfovibrio desulfuricans ATCC 27774, enabling a 10-fold increase in catalytic currents. At optimal conditions, the sensitivity to nitrite and the maximum current density were 2.4 +/- 0.1 A L mol(-1) cm(-2) and 1500 mu A cm(-2), respectively. Since the biosensor performance decreased over time, laponite clay and electropolymerized amphiphilic pyrrole were tested as protecting layers. Both coating materials increased substantially the bioelectrode stability, which kept about 90% and 60% of its initial sensitivity to nitrite after 20 and 248 days, respectively.&lt;/p&gt;
</style></abstract><accession-num><style face="normal" font="default" size="100%">WOS:000285397700013</style></accession-num><notes><style face="normal" font="default" size="100%">&lt;p&gt;Times Cited: 2&lt;/p&gt;
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