Quantum conductance investigation on carbon nanotube–based antibiotic sensor

Sahihazar, Milad Moutab; Ahmadi, Mohammad Taghi; Nouri, Mehran; Rahmani, Meisam

doi:10.1007/s10008-019-04261-1

Cited by 16 publications

(12 citation statements)

References 45 publications

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“…They are divided into two main groups, the single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs), comprising three or more nanotubes in concentric circles [4,5]. Currently, both SWCNTs and MWCNTs are synthesized by high-temperature processes through chemical vapor deposition, electric arc discharge, and laser ablation which generates large amounts of impurities [5,6], such as metallic particles from the indispensable catalysts and, especially, amorphous carbon [7][8][9]. CNTs are among the most studied electrode-modifying agents in the field of electroanalytical techniques application [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Multi-walled carbon nanotube functionalization and the dispersing agents study applied for the glassy carbon electrode modification and voltammetric reduction of nitrofurazone

Brito

Ferreira

La-Scalea

2020

J Solid State Electrochem

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Multi-walled carbon nanotubes (MWCNTs) have structures characterized by remarkable mechanical and electronic properties. However, their applications can be hindered because of their hydrophobic nature, lack of homogeneity due to impurities, and their variable sizes. Thus, MWCNT was treated by acidic oxidation (H 2 SO 4 3:1 HNO 3 ), seeking out to evaluate the influence of this functionalization on the electrochemical reduction behavior of nitrofurazone applying cyclic voltammetry, the glassy carbon surface having been modified as working electrode. The MWCNT functionalization was characterized by using scanning electron microscopy, infrared and Raman spectroscopies, thermogravimetric analysis, and potentiometric titration. Differences between non-functionalized and functionalized MWCNT were observed, suggesting that carboxylic groups were introduced in the carbon nanotube walls. Moreover, the glassy carbon surface modification was also studied concerning the dispersing agents for functionalized MWCNT. Several solvents of different natures, hydrophilic and lipophilic, were evaluated. The best dispersion associated with electrochemical response of nitrofurazone was obtained with 1,3-dioxolane as dispersing agent, which presented higher affinity with MWCNT than the other solvents. The electrochemical response of the glassy carbon electrode modified with MWCNT was evaluated by nitrofurazone voltammetric behavior with emphasis on the R−NO 2 =R−NO Á− 2 couple generation and its kinetic stability.

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Section: Introductionmentioning

confidence: 99%

Multi-walled carbon nanotube functionalization and the dispersing agents study applied for the glassy carbon electrode modification and voltammetric reduction of nitrofurazone

Brito

Ferreira

La-Scalea

2020

J Solid State Electrochem

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“…[26] Chemiresistive sensors based on nanostructured carbon material (NSCM) are popular for detecting different analytes due to their high sensitivity, low cost and simple construction compared to conventional sensors. [27] Jablonski et al produced Al-p-Si-SiO 2 -Ta 2 O 5 -TMV modified EIS sensor and it is used for Penicillin G detection. [28] Scholl et al developed CNTs/enzyme-lipid LB films and detected Penicillin G. [29] A fluorescence-based fiber optic biosensor for the flow-injectıon analysis of penicillin was developed by Xie et al [30] Jalili et al reported the preparation of a ratiometric fluorescent sensor that contains different colored carbon dots (CDs) as dual fluorophores, and a mesoporous structured molecularly imprinted polymer as a receptor (B/ YCDs@mMIP) for PENÀ G detection in milk.…”

Section: The Determination Of Pen-g From Milk Samplementioning

confidence: 99%

“…[11][12][13] Sensors are analytical devices that have a combination of simple and convenient converter receptors containing biological recognition elements. [14] In the last years, electrochemical [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] and optical sensors based on fluorometric and colorimetric measurements [30][31][32][33] have been used for the estimation of penicillin antibiotics due to their high reactivity and selectivity. Surface plasmon resonance (SPR) is an optical technique based on the intensity of reflected light in a prism covered with a thin metal film.…”

Section: Introductionmentioning

confidence: 99%

Development of Molecularly Imprinted Polymer‐Based Optical Sensor for the Sensitive Penicillin G Detection in Milk

et al. 2021

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In this study, selective and sensitive Penicillin G (PEN−G) antibiotic detection from both aqueous solution and milk samples using molecular imprinting technique was performed by surface plasmon resonance sensor. For this purpose, PEN−G imprinted poly(2‐Hydroxyethyl methacrylate‐N‐methacroyl‐(L)‐cysteine methyl ester‐gold nanoparticles‐N‐methacryloyl‐L‐phenylalanine methyl ester (MIP‐AuNPs) nanosensor was prepared. Control experiments were carried out via the nanosensor without the addition of AuNPs (MIP) to examine the effect of gold nanoparticles (AuNPs) incorporated to increase the surface plasmon resonance signal response. Moreover, to evaluate the imprinting efficiency, non‐imprinted (NIP‐AuNPs) nanosensor was designed using the same polymerization recipe except the addition of the PEN−G molecule. Characterization studies of MIP, MIP‐AuNPs and NIP‐AuNPs nanosensors were performed with FTIR‐ATR spectrophotometer. Also, MIP‐AuNPs and NIP‐AuNPs nanosensors were characterized by atomic force microscopy, ellipsometer and contact angle measurements. Imprinting efficiency (I.F: 7.83) for the MIP‐AuNPs nanosensor was determined by comparing it with the NIP‐AuNPs nanosensor. The MIP‐AuNPs nanosensor was 9.87 times more selective for the target PEN−G molecule than amoxicillin, and 16.78‐times than ampicillin. In addition, the amount of PEN−G in milk selected as a real sample was measured by spiking 5 ppb PEN−G into the milk.

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“…Nanotubos de carbono (CNTs) são materiais amplamente utilizados no desenvolvimento de sensores eletroquímicos (BOZAL-PALABIYIK et al, 2013;CAÑETE-ROSALES et al, 2012;JI et al, 2010;MOUTAB SAHIHAZAR et al, 2019;PUMERA, 2012; PÉREZ-LÓPEZ; MERKOÇI, 2012). As características únicas dos CNTs, incluindo diâmetro na escala nanométrica, peso ultraleve e grande área superficial específica, potencial eletrostático neutro e capacidade de transporte de fármacos fazem deste material muito atrativo para este fim (MEHRA; JAIN, 2014).…”

Section: Nanotubos De Carbono (Cnts)unclassified

Avaliação dos efeitos da funcionalização por tratamento ácido no desempenho eletroanalítico de eletrodos modificados com nanotubos de carbono de paredes múltiplas

Stefano¹

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Quantum conductance investigation on carbon nanotube–based antibiotic sensor

Cited by 16 publications

References 45 publications

Multi-walled carbon nanotube functionalization and the dispersing agents study applied for the glassy carbon electrode modification and voltammetric reduction of nitrofurazone

Multi-walled carbon nanotube functionalization and the dispersing agents study applied for the glassy carbon electrode modification and voltammetric reduction of nitrofurazone

Development of Molecularly Imprinted Polymer‐Based Optical Sensor for the Sensitive Penicillin G Detection in Milk

Avaliação dos efeitos da funcionalização por tratamento ácido no desempenho eletroanalítico de eletrodos modificados com nanotubos de carbono de paredes múltiplas

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