<?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%">Santos, L.a</style></author><author><style face="normal" font="default" size="100%">Silveira, C.M.b c</style></author><author><style face="normal" font="default" size="100%">Elangovan, E.d</style></author><author><style face="normal" font="default" size="100%">Neto, J.P.a</style></author><author><style face="normal" font="default" size="100%">Nunes, D.a</style></author><author><style face="normal" font="default" size="100%">Pereira, L.a</style></author><author><style face="normal" font="default" size="100%">Martins, R.a</style></author><author><style face="normal" font="default" size="100%">Viegas, J.d</style></author><author><style face="normal" font="default" size="100%">Moura, J.J.G.b</style></author><author><style face="normal" font="default" size="100%">Todorovic, S.c</style></author><author><style face="normal" font="default" size="100%">Almeida, M.G.b e</style></author><author><style face="normal" font="default" size="100%">Fortunato, E.a</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Synthesis of WO3 nanoparticles for biosensing applications</style></title><secondary-title><style face="normal" font="default" size="100%">Sensors and Actuators, B: Chemical</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Biosensors</style></keyword><keyword><style  face="normal" font="default" size="100%">Carbon</style></keyword><keyword><style  face="normal" font="default" size="100%">Cytochrome c nitrite reductase</style></keyword><keyword><style  face="normal" font="default" size="100%">Direct electron transfer</style></keyword><keyword><style  face="normal" font="default" size="100%">Electrochemical applications</style></keyword><keyword><style  face="normal" font="default" size="100%">Electrochemical electrodes</style></keyword><keyword><style  face="normal" font="default" size="100%">Electrochemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">Electrodes</style></keyword><keyword><style  face="normal" font="default" size="100%">Electron transitions</style></keyword><keyword><style  face="normal" font="default" size="100%">Enzyme electrodes</style></keyword><keyword><style  face="normal" font="default" size="100%">Heterogeneous electron transfer</style></keyword><keyword><style  face="normal" font="default" size="100%">Hydrothermal synthesis</style></keyword><keyword><style  face="normal" font="default" size="100%">Metal nanoparticles</style></keyword><keyword><style  face="normal" font="default" size="100%">Metal oxide nanoparticles</style></keyword><keyword><style  face="normal" font="default" size="100%">Metals</style></keyword><keyword><style  face="normal" font="default" size="100%">Michaelis-Menten constant</style></keyword><keyword><style  face="normal" font="default" size="100%">Nanoparticles</style></keyword><keyword><style  face="normal" font="default" size="100%">Nanostructures</style></keyword><keyword><style  face="normal" font="default" size="100%">Oxides</style></keyword><keyword><style  face="normal" font="default" size="100%">Rate constants</style></keyword><keyword><style  face="normal" font="default" size="100%">Synthesis (chemical)</style></keyword><keyword><style  face="normal" font="default" size="100%">Third-generation biosensors</style></keyword><keyword><style  face="normal" font="default" size="100%">Tungsten</style></keyword><keyword><style  face="normal" font="default" size="100%">Tungsten compounds</style></keyword><keyword><style  face="normal" font="default" size="100%">Tungsten oxide</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2016</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943150062&amp;doi=10.1016%2fj.snb.2015.09.046&amp;partnerID=40&amp;md5=e799ed9578d59925dbf3a914a9ef1faa</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Elsevier</style></publisher><volume><style face="normal" font="default" size="100%">223</style></volume><pages><style face="normal" font="default" size="100%">186-194</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Direct electron transfer with redox proteins, in third generation biosensors, is already proved to be favored on electrodes modified with nanoparticles. In this work, different crystallographic and morphologic structures of tungsten oxide (WO3) nanoparticles are modified by hydrothermal synthesis at 180°C. The electrochemical properties of WO3 nanoparticles deposit on ITO electrodes are investigated and the analytical performance of the nitrite biosensor is presented as proof of concept. Despite the inherent features of each nanostructure, the heterogeneous electron transfer with the WO3 nanoparticles modified electrodes is thoroughly improved and, very importantly, the cytochrome c nitrite reductase (ccNiR) enzyme is able to keep its biological function. When compared with bare commercial ITO electrodes, the exchange rate constant of WO3/ITO electrodes with cytochrome c increased one order of magnitude, while the analytical parameters of the ccNiR/WO3/ITO electrodes response to nitrite (the Michaelis-Menten constant is 47 μM and sensitivity of 2143 mA M-1 cm-2) are comparable to those reported for carbon based electrodes. Therefore, these metal oxide nanoparticles are good alternative materials for electrochemical applications, such as non-mediated biosensors. © 2015 Elsevier B.V. All rights reserved.</style></abstract><notes><style face="normal" font="default" size="100%">cited By 1</style></notes></record></records></xml>