Highly sensitive and reusable ion-sensor based on functionalized graphene
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Universidade Federal de Minas Gerais
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Artigo de periódico
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Some sub-products from the industrial activity are rich in metals, very often being highly toxic to human health and to the environment. Thus, the development of real-time and ultrasensitive techniques for metals detection is relevant. Herein, we report an ion-sensitive field-effect transistor (ISFET) based on l-phenylalanine functionalized graphene that detects Na+, Co2+, and Al3+ at the nanomolar range and Cu2+ at the picomolar range. Our sensor is prepared using a simple functionalization method and is reusable after a standard HCl cleaning process. Altogether, the ISFET is a promising device for real-time detection of metal ions at low concentrations.
Abstract
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Transistores, Grafeno, Íons
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Doping, Field effect transistors, Graphene, Reference electrodes, Ions and properties, Electrochemical sensors, Amino acid
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https://pubs.aip.org/aip/apl/article-abstract/117/3/033105/311908/Highly-sensitive-and-reusable-ion-sensor-based-on?redirectedFrom=fulltext