Characterization of Functionalized Multiwalled Carbon Nanotubes for Use in an Enzymatic Sensor

Guadarrama-Fernández, Leonor; Chanona-Pérez, Jorge; Manzo-Robledo, A.; Calderón‐Domínguez, Georgina; Martinez-Rivas, Adrian; Ortíz-López, J.; Vargas-Garcı́a, J.R.

doi:10.1017/s143192761401304x

Cited by 17 publications

(3 citation statements)

References 32 publications

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“…To study the conductive behavior of multiwalled carbon nanotubes (CNTs, Graphistrength CW2‐45; Lacq, France) onto the CA, two approaches were performed. In the first approach, CNTs were previously carboxylic acid functionalized as Guadarrama‐Fernández et al 33 reported, then a proportion of 1 mg/mL of CNTs was added to the solution of CA. This hydrogel solution (CA1) was immersed in ethanol at room temperature (24 ± 3°C) for 15 min and washed several times with distilled water to exchange ethanol.…”

Section: Experimental Section/methodsmentioning

confidence: 99%

Development of a facile aerogel‐based ion‐selective electrode using cellulose and carbon nanotubes as transducer materials for potentiometric application

Gallegos-Cerda

Chanona-Pérez

Hernández‐Varela

et al. 2023

J of Applied Polymer Sci

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Facile, lightweight, and sustainable aerogels have been a growing interest in their applications as support matrixes in the current environmental and energy challenges. In this study, a cellulose aerogel (CA) is fabricated using a homogeneous dispersion of cellulose fibers in an alkali‐urea aqueous solution and a carbon nanotube ink (CNT‐ink) to increase its electrical and conductive behavior in a potentiometric analysis. The physicochemical and morphological properties of the resultant composite aerogels (CA, CA1, and CA2) are investigated by thermal, water resistance, mechanical, FTIR, and SEM analysis. The prepared material exhibits a structured solid network that is visualized through SEM in which fibers are functionalized with CNTs. The results from compressive tests reveal that CA2 has excellent mechanical properties. A saturated CA with CNT‐ink can turn on a white LED and potentiometric measurements by preparing an aerogel‐based ion‐selective electrode (CA2 ‐ ISE) with a potassium ion‐selective membrane (K+ − ISM) reveal good sensitivity at room temperature for the detection in a specific electrolyte solution.

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Section: Experimental Section/methodsmentioning

confidence: 99%

Development of a facile aerogel‐based ion‐selective electrode using cellulose and carbon nanotubes as transducer materials for potentiometric application

Gallegos-Cerda

Chanona-Pérez

Hernández‐Varela

et al. 2023

J of Applied Polymer Sci

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“…TEM transmission electron microscopy, SEM scanning electron microscopy, XPS X-ray photoelectron spectroscopy cation as a biosensor, the capacitance of CNT in each step of the functionalization process was determined using cyclic voltammetry. The changes in the capacitance values show that this functionalization process allows having an active enzyme immobilized onto the CNT surface that can be used in the construction of a sensor (Guadarrama-Fernández et al 2014).…”

Section: Applicationsmentioning

confidence: 99%

Food Nanoscience and Nanotechnology

Hernández‐Sánchez¹,

Fidel²,

Gutiérrez-Ĺopez³

2015

Food Engineering Series

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Springer's Food Engineering Series is essential to the Food Engineering profession, providing exceptional texts in areas that are necessary for the understanding and development of this constantly evolving discipline. The titles are primarily reference-oriented, targeted to a wide audience including food, mechanical, chemical, and electrical engineers, as well as food scientists and technologists working in the food industry, academia, regulatory industry, or in the design of food manufacturing plants or specialized equipment. This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. Printed on acid-free paper PrefaceFood nanoscience and nanotechnology are emergent disciplines that have grown enormously in the last years due to the attractive properties that a number of foodrelated materials have at the nanoscale. Understanding basic principles of such properties constitutes the basis for building a robust knowledge base for developing products with improved and novel characteristics.Understanding fundamentals of food nanotechnology represents a huge challenge for universities, industries and the public sector. The complex mechanisms involved in the research, development, production and legislation of food nanoproducts are studied under multi-and inter-disciplinary scopes. Bearing this in mind, this book was conceived.This book aims to contribute to basic and applied knowledge on these fields by presenting recent advances in selected topics of food nanoscience and nanotechnology, and is divided into a total of 17 chapters. The first chapter presents an overview to the field; the following chapter discusses general techniques for studying foodrelated nanomaterials, followed by six chapters on specific techniques for preparing food nanomaterials while the next contribution on dispersed systems illustrates this important and vast field. The book continues with three chapters on food nanocomposites, including those for packing purposes, and two chapters on advanced aspects of food nan...

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“…Functionalization of CNTs with different surface groups (e.g., −OH, −COOH, −NH 2 ) has been accomplished using various different methods (e.g., electrochemical oxidation, acid treatment, plasma treatment), which can greatly affect compound adsorption. − Adsorption of organic compounds to CNTs occurs by various mechanisms including electrostatic and hydrophobic interactions, hydrogen bonding, and electron-donor–acceptor (π–π) interactions. − Oxygenated CNTs decrease the hydrophobic adsorption of compounds but increase the formation of hydrogen bonding due to a higher content of oxygen groups on the CNTs. − Oxygenated CNTs also increase the strength of electrostatic attraction between deprotonated acid groups (e.g., −COO – ) and positively charged compounds. Functionalized CNTs have been extensively used to detect different analytes including lectin and gonadotropin. − …”

Section: Introductionmentioning

confidence: 99%

Selective Electrochemical Detection of Ciprofloxacin with a Porous Nafion/Multiwalled Carbon Nanotube Composite Film Electrode

Gayen

Chaplin

2016

ACS Appl. Mater. Interfaces

122

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This study focuses on the development of electrochemical sensors for the detection of Ciprofloxacin (CFX) in natural waters and wastewater effluents. The sensors are prepared by depositing a layer of multiwalled carbon nanotubes (MWCNTs) dispersed in a porous Nafion film on to a boron-doped diamond (BDD) electrode substrate. The porous-Nafion-MWCNT/BDD electrode enhanced detection of CFX due to selective adsorption, which was accomplished by a combination of electrostatic attraction at -SO3(-) sites in the porous Nafion film and the formation of charge assisted hydrogen bonding between CFX and -COOH MWCNT surface functional groups. By contrast, the bare BDD electrode did not show any activity for CFX oxidation. The sensors were selective for CFX detection in the presence of other antibiotics (i.e., amoxicillin) and other nontarget water constituents (i.e., Cl(-), Ca(2+), humic acid, sodium dodecylbenzenesulfonate, salicylic acid, 4-aminobenzoic acid, and 4-hydroxybenzoic acid). A limit of detection of 5 nM (S/N = 5.04 ± 0.26) in a 0.1 M KH2PO4 supporting electrolyte (pH = 4.5) was obtained using differential pulse voltammetry. The linear dynamic ranges with respect to CFX concentration were 0.005-0.05 μM and 0.05-10 μM, and the sensitivities were 41 ± 5.2 μA μM(-1) and 2.1 ± 0.22 μA μM(-1), respectively. Sensor fouling was observed at high concentrations of some organic compounds such as 1 mM 4-aminobenzoic acid and 4-hydroxybenzoic acid. However, a short cathodic treatment fully restores sensor response. The results indicate that these sensors have application in detecting CFX in natural waters and wastewater effluents.

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Characterization of Functionalized Multiwalled Carbon Nanotubes for Use in an Enzymatic Sensor

Cited by 17 publications

References 32 publications

Development of a facile aerogel‐based ion‐selective electrode using cellulose and carbon nanotubes as transducer materials for potentiometric application

Development of a facile aerogel‐based ion‐selective electrode using cellulose and carbon nanotubes as transducer materials for potentiometric application

Food Nanoscience and Nanotechnology

Selective Electrochemical Detection of Ciprofloxacin with a Porous Nafion/Multiwalled Carbon Nanotube Composite Film Electrode

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