A Facile and Sensitive Electrochemical Analysis Based on Flower-Like Nanocomposite Supported Teicoplanin as the Recognition Element for Tyrosine Enantiomers

Song, Jinyi; Ran, Peiyao; Mo, Fangjing; Wu, Jingling; Fu, Yingzi

doi:10.1149/2.0671906jes

Cited by 8 publications

(9 citation statements)

References 39 publications

(37 reference statements)

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“…The Rct of SWCNTs/GCE was the lowest, which can be attributed to the excellent electrocatalytic activity, high conductivity and large specific surface area of SWCNTs. 40 And the relatively higher Rct of MnO 2 -SWCNTs/GCE was due the composited MnO 2 with poor conductivity compared to that of SWCNTs/GCE. In comparison with the higher Rct of bare GCE, the lower Rct of MnO 2 -SWCNTs/GCE could be mainly attributed to the synergistic effects of MnO 2 and SWCNTs, which was beneficial to the electrontransfer reactions in the K 3 [Fe(CN) 6 ]-K 4 [Fe(CN) 6 ] system.…”

Section: Resultsmentioning

confidence: 99%

“…In recent years, single-walled CNTs (SWCNTs) have been used to construct new kinds of multi-functional nanodevices, sensors and metal-free catalysts due to their excellent electro-catalytic activity, high electrical conductivity and stability. [39][40][41] However, the preparation of MnO 2 -SWCNTs composite for detection of H 2 O 2 has not been widely reported. Hence, a novel, facile one-step, template-free hydrothermal method was used to prepare a petal-like hierarchical MnO 2 anchored SWCNTs (MnO 2 -SWCNTs) composite in an acidic environment.…”

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confidence: 99%

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Facile and Rapid Fabrication of Petal-like Hierarchical MnO₂ Anchored SWCNTs Composite and its Application in Amperometric Detection of Hydrogen Peroxide

Huang¹,

Zou²,

Yu³

2020

J. Electrochem. Soc.

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Hydrogen peroxide (H2O2) is a vital analyte, such as an intermediate in biological system and a widely used industrial oxidant. It is of great significance for sensitive and accurate detection of H2O2 in practical applications. In this study, petal-like hierarchical MnO2 anchored SWCNTs composite was prepared by a facile one-step, template-free hydrothermal method. Field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were used to observe the surface morphology, crystalline phase and chemical bonding state of MnO2-SWCNTs composite, respectively. Under the optimum conditions, the as-prepared nonenzymatic sensor (MnO2-SWCNTs/GCE) showed high sensitivity and selectivity for H2O2. The peak current was linearly dependent on the H2O2 concentration, and a linear calibration curve could be obtained in the H2O2 concentration range 15.0–2000 μM. The limit of detection (LOD) was calculated to be 1.0 μM (signal-to-noise ratio of 3, S/N = 3). The inter-day and intra-day precisions were estimated to be <5.0%. The recoveries of H2O2 in disinfectant at MnO2-SWCNTs/GCE were in the range of 96.7%–111.9%, and RSD were 2.15%–7.58%. The results demonstrated MnO2-SWCNTs/GCE had excellent stability, good reproducibility, and high selectivity. Hence, MnO2-SWCNTs/GCE can be a potential candidate for the practically quantitative detection of H2O2 in real samples.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Facile and Rapid Fabrication of Petal-like Hierarchical MnO₂ Anchored SWCNTs Composite and its Application in Amperometric Detection of Hydrogen Peroxide

Huang¹,

Zou²,

Yu³

2020

J. Electrochem. Soc.

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“…With appropriate detectors and transduction signals, various analysis instruments and techniques have been used for chirality detection or chiral separation. They include circular dichroism (CD) [9], nuclear magnetic resonance [10], Fourier transform infrared spectrometry (FTIR) [11], UV-vis absorption spectrometry [12], mass spectrometry (MS) [13], titration microcalorimetry [14], high-performance liquid chromatography (HPLC) [15], gas chromatography (GC), capillary electrophoresis (CE) [16], and electrochemical chiral sensors [17][18][19]. However, these methods still have drawbacks as they are time consuming, expensive, and unable to monitor real-time detection.…”

Section: Introductionmentioning

confidence: 99%

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

Ma¹,

Xiao²,

Ji³

2022

Beilstein J. Nanotechnol.

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Quartz crystal microbalance (QCM) has been widely used for various sensing applications, including chirality detection due to the high sensitivity to nanogram or picogram mass changes, fast response, real-time detection, easy operation, suitability in different media, and low experimental cost. The sensing performance of QCM is dependent on the surface design of the recognition layers. Various strategies have been employed for studying the relationship between the structural features and the specific detection of chiral isomers. This review provides an overview of the construction of chiral sensing layers by various nanostructures and materials in the QCM system, which include organic molecules, supermolecular assemblies, inorganic nanostructures, and metal surfaces. The sensing mechanisms based on these surface nanostructures and the related potentials for chiral detection by the QCM system are also summarized.

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“…The chiral recognition of α-amino acids has attracted considerable interest because different enantiomeric amino acids show differences in their pharmacological activity, biological interaction and metabolic behavior in the biological system. [1][2][3] For instance, L-tryptophan (L-Trp) is one of the most important constituents of protein, as a precursor for serotonin and melatonin, L-Trp can be used to improve the appetite, mood, sleep and mental health. However, D-Tryptophan (D-Trp) cannot be found in proteins and no specific medicinal properties of D-Trp have been reported to date.…”

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confidence: 99%

An enzyme Biosensor Based on Organic Transistors for Recognizing α-Amino Acid Enantiomers

Zhang

et al. 2020

J. Electrochem. Soc.

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The chiral recognition of α-amino acids has attracted considerable interest because different enantiomeric amino acids show differences in their biological behavior and pharmacological activity. An organic electrochemical transistor (OECT)-based biosensor modified with L-amino acid oxidases (L-AAODX) was fabricated and successfully used as a biosensor for enantioselectively discriminating α-amino acids, such as D/L-tryptophan (D/L-Trp), D/L-tyrosine (D/L-Tyr) and D/L-phenylalanine (L-Phe) with high performance because L-AAODX selectively catalyzed the oxidation of L-Trp, L-Tyr, and L-Phe along with the amplification of OECT. The biosensor showed a sensitivity of 19.67 μA/μM with a LOD of 10 nM (S/N > 3) over the range of 10 nM to 30 μM for L-Trp, 16.71 μA/μM with a LOD of 2 nM (S/N >3) over the range of 2 nM to 30 μM for L-Tyr and 15.51 μA/μM with a LOD of 10 nM (S/N > 3) over the range of 30 nM to 30 μM for L-Phe. Furthermore, the biosensor can both be used for the chiral recognition of Trp, Tyr and Phe, and distinguish L-amino acids from its interferences (e.g., Glu, UA, L-Asp, L-Lys and L-Glu) and common metal ions (K+, Na+ and Fe3+).

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A Facile and Sensitive Electrochemical Analysis Based on Flower-Like Nanocomposite Supported Teicoplanin as the Recognition Element for Tyrosine Enantiomers

Cited by 8 publications

References 39 publications

Facile and Rapid Fabrication of Petal-like Hierarchical MnO₂ Anchored SWCNTs Composite and its Application in Amperometric Detection of Hydrogen Peroxide

Facile and Rapid Fabrication of Petal-like Hierarchical MnO₂ Anchored SWCNTs Composite and its Application in Amperometric Detection of Hydrogen Peroxide

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

An enzyme Biosensor Based on Organic Transistors for Recognizing α-Amino Acid Enantiomers

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A Facile and Sensitive Electrochemical Analysis Based on Flower-Like Nanocomposite Supported Teicoplanin as the Recognition Element for Tyrosine Enantiomers

Cited by 8 publications

References 39 publications

Facile and Rapid Fabrication of Petal-like Hierarchical MnO2 Anchored SWCNTs Composite and its Application in Amperometric Detection of Hydrogen Peroxide

Facile and Rapid Fabrication of Petal-like Hierarchical MnO2 Anchored SWCNTs Composite and its Application in Amperometric Detection of Hydrogen Peroxide

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

An enzyme Biosensor Based on Organic Transistors for Recognizing α-Amino Acid Enantiomers

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Product

Resources

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Facile and Rapid Fabrication of Petal-like Hierarchical MnO₂ Anchored SWCNTs Composite and its Application in Amperometric Detection of Hydrogen Peroxide

Facile and Rapid Fabrication of Petal-like Hierarchical MnO₂ Anchored SWCNTs Composite and its Application in Amperometric Detection of Hydrogen Peroxide