<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Han, C.</style></author><author><style face="normal" font="default" size="100%">Doepke, A.</style></author><author><style face="normal" font="default" size="100%">Cho, W.</style></author><author><style face="normal" font="default" size="100%">V. Likodimos</style></author><author><style face="normal" font="default" size="100%">de la Cruz, A.A.</style></author><author><style face="normal" font="default" size="100%">Back, T.</style></author><author><style face="normal" font="default" size="100%">Heineman, W.R.</style></author><author><style face="normal" font="default" size="100%">Halsall, H.B.</style></author><author><style face="normal" font="default" size="100%">Shanov, V.N.</style></author><author><style face="normal" font="default" size="100%">Schulz, M.J.</style></author><author><style face="normal" font="default" size="100%">P. Falaras</style></author><author><style face="normal" font="default" size="100%">Dionysiou, D.D.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A multiwalled-carbon-nanotube-based biosensor for monitoring microcystin-LR in sources of drinking water supplies</style></title><secondary-title><style face="normal" font="default" size="100%">Advanced Functional Materials</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.scopus.com/inward/record.uri?eid=2-s2.0-84875866942&amp;doi=10.1002%2fadfm.201201920&amp;partnerID=40&amp;md5=496de3eded9b5adf54a407709a29fe96</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">14</style></number><volume><style face="normal" font="default" size="100%">23</style></volume><pages><style face="normal" font="default" size="100%">1807-1816</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A multiwalled carbon nanotube (MWCNT)-based electrochemical biosensor is developed for monitoring microcystin-LR (MC-LR), a toxic cyanobacterial toxin, in sources of drinking water supplies. The biosensor electrodes are fabricated using vertically well-aligned, dense, millimeter-long MWCNT arrays with a narrow size distribution, grown on patterned Si substrates by water-assisted chemical vapor deposition. High temperature thermal treatment (2500 °C) in an Ar atmosphere is used to enhance the crystallinity of the pristine materials, followed by electrochemical functionalization in alkaline solution to produce oxygen-containing functional groups on the MWCNT surface, thus providing the anchoring sites for linking molecules that allow the immobilization of MC-LR onto the MWCNT array electrodes. Addition of the monoclonal antibodies specific to MC-LR in the incubation solutions offers the required sensor specificity for toxin detection. The performance of the MWCNT array biosensor is evaluated using micro-Raman spectroscopy, including polarized Raman measurements, X-ray photoelectron spectroscopy, cyclic voltammetry, optical microscopy, and Faradaic electrochemical impedance spectroscopy. A linear dependence of the electron-transfer resistance on the MC-LR concentration is observed in the range of 0.05 to 20 μg L-1, which enables cyanotoxin monitoring well below the World Health Organization (WHO) provisional concentration limit of 1 μg L-1 for MC-LR in drinking water. An highly sensitive Faradaic electrochemical impedance biosensor for monitoring microcystin-LR (MC-LR) in sources of drinking water supplies is developed using millimeter-long multiwalled carbon nanotube (MWCNT) arrays grown by water-assisted chemical vapor deposition with vertical alignment. A linear sensing response shows a wide microcystin-LR concentration range that is below the World Health Organization (WHO) provisional guideline limit of 1 μg L-1 for MC-LR in drinking water. Copyright © 2013 WILEY-VCH Verlag GmbH &amp;amp; Co. KGaA, Weinheim.</style></abstract><notes><style face="normal" font="default" size="100%">cited By 63</style></notes></record></records></xml>