Highly sensitive and reusable ion-sensor based on functionalized graphene

被引：9

作者：

Alves, Ana Paula P. ^{[1
]}

Meireles, Leonel M. ^{[1
,2
]}

Ferrari, Gustavo A. ^{[1
,3
]}

Cunha, Thiago Henrique R. ^{[1
]}

Paraense, Mariana O. ^{[1
]}

Campos, Leonardo C. ^{[1
]}

Lacerda, Rodrigo G. ^{[1
]}

机构：

[1] Univ Fed Minas Gerais, Dept Fis, Av Pres Antonio Carlos,6627 Pampulha, BR-31270901 Belo Horizonte, MG, Brazil

[2] Ctr Fed Educ Tecnol Minas Gerais CEFET MG, BR-35180008 Timoteo, MG, Brazil

[3] Inst Fed Minas Gerais, Campus Ouro Preto, BR-35400000 Ouro Preto, MG, Brazil

来源：

APPLIED PHYSICS LETTERS | 2020年 / 117卷 / 03期

关键词：

SIMULTANEOUS ELECTROCHEMICAL DETECTION; CARBON DOTS; PHENYLALANINE; OXIDE; CU2+; NANOCOMPOSITE; COMPOSITES; COPPER(II); METALS; CU(II);

D O I：

10.1063/5.0009555

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. Published under license by AIP Publishing.

引用

页数：5

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