Preparation of single walled carbon nanotube-pyrene 3D hybrid nanomaterial and its sensor response to ammonia

Şenocak, Ahmet; Göl, Cem; Basova, Tamara V.; Demirbaş, E.; Durmuş, Mahmut; Al-Sagur, H.; Kadem, Burak; Hassan, Aseel

doi:10.1016/j.snb.2017.10.012

Cited by 34 publications

(15 citation statements)

References 23 publications

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“…TGA was utilized to calculate the amount of azide groups and SubPc molecules covalently bound to the surface of SWCNTs as described in the literature ( Figure d ) . The weight losses of CS hybrid, SWCNT‐N 3 , pristine SWCNT and SubPc at 700 °C were 30.54 %, 12.66 %, 4.69 % and 40.94 %, respectively.…”

Section: Resultsmentioning

confidence: 99%

Direct and Fast Electrochemical Determination of Catechin in Tea Extracts using SWCNT‐Subphthalocyanine Hybrid Material

et al. 2019

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In this study, single walled carbon nanotubes (SWCNTs) were covalently functionalized by terminal ethynyl bearing subphthalocyanine (SubPc) to obtain a new hybrid material, viz. SWCNT‐SubPc (CS), via “click” reaction for the first time. The structural characterization and study of the electrochemical sensor properties of the CS hybrid material to catechin were carried out. A convenient and fast analytical method was offered for the determination of catechin. It was shown that the deposition of CS on the surface of a glassy carbon electrode (GCE) led to a 2.2 and 8‐fold increase in the differential pulse voltammetry (DPV) responses to catechin in Britton‐Robinson (BR) buffer solution (a pH of 3) in comparison with SWCNT‐modified and bare GCE, respectively. The dynamic range, detection and quantification limits of catechin were determined to be 0.1–1.5 μM, 13 nM and 43 nM, respectively. Selectivity of the suggested CS/GCE sensor was investigated on addition of a number of interfering metal ions, antioxidants and biomolecules. The applicability of the modified electrode for the detection of catechin in real tea samples such as green, rosehip fruit, Turkish and Indian black tea was demonstrated with the standard addition method. Along with the ease in fabrication and low prices, the proposed CS/GCE sensor was reproducible, selective, stable and sensitive to catechin in major types of tea samples.

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Section: Resultsmentioning

confidence: 99%

Direct and Fast Electrochemical Determination of Catechin in Tea Extracts using SWCNT‐Subphthalocyanine Hybrid Material

et al. 2019

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“…are widely represented in sensors as the main material and/or a transducer modifier [ 199 , 200 , 201 ]. Currently, many reviews [ 39 , 202 , 203 ] and original papers [ 204 , 205 , 206 ] on various aspects of carbon nanomaterials application in sensors and biosensors have been published. These materials have a developed surface and high conductivity and mechanical strength.…”

Section: Methods Of Sensors Characteristics Improvementmentioning

confidence: 99%

Sensors Based on Bio and Biomimetic Receptors in Medical Diagnostic, Environment, and Food Analysis

et al. 2018

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Analytical chemistry is now developing mainly in two areas: automation and the creation of complexes that allow, on the one hand, for simultaneously analyzing a large number of samples without the participation of an operator, and on the other, the development of portable miniature devices for personalized medicine and the monitoring of a human habitat. The sensor devices, the great majority of which are biosensors and chemical sensors, perform the role of the latter. That last line is considered in the proposed review. Attention is paid to transducers, receptors, techniques of immobilization of the receptor layer on the transducer surface, processes of signal generation and detection, and methods for increasing sensitivity and accuracy. The features of sensors based on synthetic receptors and additional components (aptamers, molecular imprinted polymers, biomimetics) are discussed. Examples of bio- and chemical sensors’ application are given. Miniaturization paths, new power supply means, and wearable and printed sensors are described. Progress in this area opens a revolutionary era in the development of methods of on-site and in-situ monitoring, that is, paving the way from the “test-tube to the smartphone”.

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“…The number of azide groups on SWCNTs-N3 was calculated according to the literature [47,60,61] The amount of SiPc molecules in this hybrid is about four times larger than that in SWCNT-based hybrid obtained by covalent functionalization with other phthalocyanine molecules [36,37] and comparable with the amount of other linking molecules, viz. pyrene and coumarin, in similar cross-linked hybrid materials [45,61].…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

“…For instance, the covalent binding of CNT via 1,4-diethylbenzene and 4,4 -diethynyldiphenyl linkers was carried out by the Sonogashira reaction [44]. It was also shown [45][46][47] that 3D hybrid materials of single walled carbon nanotubes (SWCNT) with organic molecules could be obtained by the azide-alkyne cycloaddition reaction. In practical terms 3D-materials are usually considered as gas absorbers with high surface area [41,44,48].…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Nanomaterial Based on Single Walled Carbon Nanotubes Cross-Linked via Axially Substituted Silicon (IV) Phthalocyanine for Chemiresistive Sensors

et al. 2020

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In this work, the novel hybrid nanomaterial SWCNT/SiPc made of single walled carbon nanotubes (SWCNT) cross-linked via axially substituted silicon (IV) phthalocyanine (SiPc) was studied as the active layer of chemiresistive layers for the detection of ammonia and hydrogen. SWCNT/SiPc is the first example of a carbon-based nanomaterial in which an axially substituted phthalocyanine derivative is used as a linker. The prepared hybrid material was characterized by spectroscopic methods, thermogravimetry, scanning and transmission electron microscopies. The layers of the prepared hybrid were tested as sensors toward ammonia and hydrogen by a chemiresistive method at different temperatures and relative humidity as well as in the presence of interfering gases like carbon dioxide, hydrogen sulfide and volatile organic vapors. The hybrid layers exhibited the completely reversible sensor response to both gases at room temperature; the recovery time was 100–200 s for NH3 and 50–120 s in the case of H2 depending on the gas concentrations. At the relative humidity (RH) of 20%, the sensor response was almost the same as that measured at RH 5%, whereas the further increase of RH led to its 2–3 fold decrease. It was demonstrated that the SWCNT/SiPc layers can be successfully used for the detection of both NH3 and H2 in the presence of CO2. On the contrary, H2S was found to be an interfering gas for the NH3 detection.

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Preparation of single walled carbon nanotube-pyrene 3D hybrid nanomaterial and its sensor response to ammonia

Cited by 34 publications

References 23 publications

Direct and Fast Electrochemical Determination of Catechin in Tea Extracts using SWCNT‐Subphthalocyanine Hybrid Material

Direct and Fast Electrochemical Determination of Catechin in Tea Extracts using SWCNT‐Subphthalocyanine Hybrid Material

Sensors Based on Bio and Biomimetic Receptors in Medical Diagnostic, Environment, and Food Analysis

A Hybrid Nanomaterial Based on Single Walled Carbon Nanotubes Cross-Linked via Axially Substituted Silicon (IV) Phthalocyanine for Chemiresistive Sensors

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