Electrochemical Sensor Based on Carbon Nanotubes for the Simultaneous Detection of Phenolic Pollutants

Maduraiveeran, Govindhan; Lafleur, Todd; Adhikari, Bal-Ram; Chen, Aicheng

doi:10.1002/elan.201400608

Cited by 83 publications

(38 citation statements)

References 52 publications

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“…AuNPs (alone or as composites) have been employed for the detection of a variety of analytes including hydrogen peroxide, hydrazine and nitrite . On the other hand, the recent intense interest in the carbon based nanomaterials (such as multiwalled carbon nanotubes, MWCNTs) has also made a significant impact in the electrocatalytic detection of a wide range of analytes of environmental and biomedical importance , as well as oxygen reduction reactions among others. Carbon nanotubes promote electron transfer in electrochemical reactions and improve sensitivity , hence are employed in electrode modification in this work.…”

Section: Introductionmentioning

confidence: 99%

Characterization and Electrocatalytic Activity of Nanocomposites Consisting of Nanosized Cobalt Tetraaminophenoxy Phthalocyanine, Multi‐walled Carbon Nanotubes and Gold Nanoparticles

Shumba

Nyokong

2016

Electroanalysis

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Glassy carbon electrodes were modified with composites containing cobalt tetraaminophenoxy phthalocyanine nanoparticles (CoTAPhPcNP), multi‐walled carbon nanotubes (MWCNT) and gold nanorods (AuNRs). The modified electrodes were studied for their electrocatalytic behavior towards the reduction of hydrogen peroxide. Phthalocyanine nanoparticles significantly improved electron transfer kinetics as compared to phthalocyanines which are not in the nanoparticle form when alone or in the presence of multiwalled carbon nanotubes (MWCNTs). CoTAPhPcNP‐MWCNT‐GCE proved to be suitable for hydrogen peroxide detection with a catalytic rate constant of 3.45×103 M−1 s−1 and a detection limit of 1.61×10−7 M. Adsorption Gibbs free energy ΔGo was found to be −19.22 kJ mol−1 for CoTAPhPcNP‐MWCNT‐GCE.

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Section: Introductionmentioning

confidence: 99%

Characterization and Electrocatalytic Activity of Nanocomposites Consisting of Nanosized Cobalt Tetraaminophenoxy Phthalocyanine, Multi‐walled Carbon Nanotubes and Gold Nanoparticles

Shumba

Nyokong

2016

Electroanalysis

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“…Therefore, a simple and real time detection of trace levels of CC in environmental samples is of great importance. To date, different analytical methods have been successfully used for the detection of CC such as high performance liquid chromatography6, flow-injection analysis7, chemiluminescence8, gas chromatography-mass spectrometry9 and electrochemical methods10. The traditional chromatographic methods are highly sensitive towards CC, yet they are required sample pretreatment, expensive, not portable and often time consuming when compared with electrochemical methods10.…”

mentioning

confidence: 99%

“…To date, different analytical methods have been successfully used for the detection of CC such as high performance liquid chromatography6, flow-injection analysis7, chemiluminescence8, gas chromatography-mass spectrometry9 and electrochemical methods10. The traditional chromatographic methods are highly sensitive towards CC, yet they are required sample pretreatment, expensive, not portable and often time consuming when compared with electrochemical methods10. Till date, different nano and micromaterials have been utilized in electrochemical methods for the sensitive detection of CC, such as carbon nanomaterials, metal and metal alloy nanoparticles, metal oxides, conducting polymers and so on11121314.…”

mentioning

confidence: 99%

A novel Laccase Biosensor based on Laccase immobilized Graphene-Cellulose Microfiber Composite modified Screen-Printed Carbon Electrode for Sensitive Determination of Catechol

Palanisamy

Ramaraj²,

Yang

et al. 2017

Sci Rep

118

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In the present work, we demonstrate the fabrication of laccase biosensor to detect the catechol (CC) using laccase immobilized on graphene-cellulose microfibers (GR-CMF) composite modified screen printed carbon electrode (SPCE). The direct electrochemical behavior of laccase was investigated using laccase immobilized different modified SPCEs, such as GR/SPCE, CMF/SPCE and GR-CMF/SPCE. Compared with laccase immobilized GR and CMF modified SPCEs, a well-defined redox couple of CuI/CuII for laccase was observed at laccase immobilized GR-CMF composite modified SPCE. Cyclic voltammetry results show that the as-prepared biosensor has 7 folds higher catalytic activity with lower oxidation potential towards CC than SPCE modified with GR-CMF composite. Under optimized conditions, amperometric i-t method was used for the quantification of CC, and the amperometric response of the biosensor was linear over the concertation of CC ranging from 0.2 to 209.7 μM. The sensitivity, response time and the detection limit of the biosensor for CC is 0.932 μMμA−1 cm−2, 2 s and 0.085 μM, respectively. The biosensor has high selectivity towards CC in the presence of potentially active biomolecules and phenolic compounds. The biosensor also accessed for the detection of CC in different water samples and shows good practicality with an appropriate repea.

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“…Non‐covalent imprinting has a wider range of uses than covalent methods . In recent years, MIT has been widely used in many fields such as chromatographic separation, solid phase extraction, simulated enzyme catalysis, electrochemical sensors and optical sensors . Among these, silane has been more favourable viewed for forming ideal recognition sites due to its good stability, biocompatibility and non‐toxicity, and especially its high crosslinked rigid matrix structure.…”

Section: Introductionmentioning

confidence: 99%

Novel fluorescent sensor using molecularly imprinted silica microsphere‐coated CdSe@CdS quantum dots and its application in the detection of 2,4,6‐trichlorophenol from environmental water samples

et al. 2019

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In this study, a high fluorescence sensitivity and selectivity, molecularly imprinted nanofluorescent polymer sensor (MIP@SiO 2 @QDs) was prepared using a reverse microemulsion method. 2,4,6-Trichlorophenol (2,4,6-TCP) was detected using fluorescence quenching. Tetraethyl orthosilicate (TEOS), quantum dots (QDs) and 3aminopropyltriethoxysilane (APTS) were used as cross-linker, signal sources and functional monomer respectively. The sensor (MIP@SiO 2 @QDs) and the non-imprinted polymer sensor (NIP@SiO 2 @QDs) were characterized using infra-red (IR) analysis, X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The selectivity of MIP@SiO 2 @QDs was examined by comparing 2,4,6-TCP with other similar functional substances including 2,4-dichlorophenol (2,4-DCP), 2,6-dichlorophenol (2,6-DCP) and 4-chlorophenol (4-CP). Results showed that MIP@SiO 2 @QDs had better selectivity for 2,4,6-TCP than the other compounds.Fluorescence quenching efficiency displayed a good linear response at the 2,4,6-TCP concentration range 5-1000 μmol/L. The limit of detection (LOD) was 0.9 μmol/L (3σ, n = 9). This method was equally applicable for testing actual samples with a recovery rate of 98.0-105.8%. The sensor had advantages of simple pretreatment, good sensitivity and selectivity, and wide linear range and could be applied for the rapid detection of 2,4,6-TCP in actual samples. Sample 2,4,6-TCP spiked (μmol L −1 ) Detected concentration ( x¯± s n ¼ 3 ð Þμmol L −1 ) Recovery (%)

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Electrochemical Sensor Based on Carbon Nanotubes for the Simultaneous Detection of Phenolic Pollutants

Cited by 83 publications

References 52 publications

Characterization and Electrocatalytic Activity of Nanocomposites Consisting of Nanosized Cobalt Tetraaminophenoxy Phthalocyanine, Multi‐walled Carbon Nanotubes and Gold Nanoparticles

Characterization and Electrocatalytic Activity of Nanocomposites Consisting of Nanosized Cobalt Tetraaminophenoxy Phthalocyanine, Multi‐walled Carbon Nanotubes and Gold Nanoparticles

A novel Laccase Biosensor based on Laccase immobilized Graphene-Cellulose Microfiber Composite modified Screen-Printed Carbon Electrode for Sensitive Determination of Catechol

Novel fluorescent sensor using molecularly imprinted silica microsphere‐coated CdSe@CdS quantum dots and its application in the detection of 2,4,6‐trichlorophenol from environmental water samples

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