Rapid synthesis of UiO-66 by means of electrochemical cathode method with electrochemical detection of 2,4,6-TCP

Zhang, Ting; Wei, Jin‐Zhi; Sun, Xiaojun; Zhao, Xue-Jing; Tang, Hongliang; Han, Yan; Zhang, Fengming

doi:10.1016/j.inoche.2019.107671

Cited by 45 publications

(18 citation statements)

References 53 publications

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“…1A and 2. Both materials exhibited almost all the signature diffraction peaks, which were in good agreement with those previously reported in the literatures [29,30]. Corresponding SEM images also confirmed that the upscaled UiO-66 exhibited well-defined octahedral crystal shapes, with a crystallite size of ∼500 nm.…”

Section: Characterization Of Zr-based Metal-organic Frameworksupporting

confidence: 89%

Defective Zr‐based metal–organic frameworks as sorbent for the determination of fungicides in environmental water samples by rapid dispersive micro‐solid‐phase extraction coupled to liquid chromatography/mass spectrometry

Zhang

Hua

Zhao

et al. 2021

J of Separation Science

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In this work, defective Zr‐based metal–organic framework was successfully synthesized and evaluated as a dispersive micro‐solid‐phase extraction sorbent for efficient preconcentration and determination of fungicides in complex water samples. The defective Zr‐based metal–organic framework crystal with increased adsorption capacity was successfully synthesized by employing formic acid as the modulator. The extraction conditions, including the pH, extraction time, desorption solvent and desorption time, were comprehensively investigated. Under optimum conditions, it was found that dispersive micro‐solid‐phase extraction method, coupled with liquid chromatography/mass spectrometry, exhibited a good linear relationship with correlation coefficients greater than 0.9980. The relative standard deviations of inter‐day and intra‐day precisions ranged from 2.6 to 9.2% and the limits of detection ranged from 0.004 to 0.036 μg/L. These merits, combined with their satisfactory recoveries (>80%), suggested the great potential of defective Zr‐based metal–organic framework as a new adsorbent for efficient extraction of trace fungicides. This method exhibits good application potential for the pretreatment of fungicides from environmental water samples.

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Section: Characterization Of Zr-based Metal-organic Frameworksupporting

confidence: 89%

Defective Zr‐based metal–organic frameworks as sorbent for the determination of fungicides in environmental water samples by rapid dispersive micro‐solid‐phase extraction coupled to liquid chromatography/mass spectrometry

Zhang

Hua

Zhao

et al. 2021

J of Separation Science

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show abstract

“…In Figure B, the Nyquist diagram is used to characterize the electrochemical performance of each modified electrode. The diameter of the semicircle at high frequency is the electron transfer resistance ( R ct ), which controls the electron transfer kinetics of the nanoprobe at the electrode interface . By gradually modifying the bare GCE, the R ct value is gradually reduced in Figure B, and the R ct value of Tri-AgNP/ l -Cys/MXene is significantly smaller than that of the bare electrode, indicating that the charge transfer rate of the nanoprobe is higher than that of the bare electrode.…”

Section: Results and Discussionmentioning

confidence: 99%

l-Cysteine-Terminated Triangular Silver Nanoplates/MXene Nanosheets are Used as Electrochemical Biosensors for Efficiently Detecting 5-Hydroxytryptamine

Chen

et al. 2021

Anal. Chem.

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5-Hydroxytryptamine (5-HT) is an important neurotransmitter, and its content in the human body is of great significance to human health. In this study, an L-cysteine-terminated triangular silver nanoplate loaded on a MXene (twodimensional transition metal carbide or nitride) (Tri-AgNP/L-Cys/MXene) electrochemical sensor was used to detect 5-HT. As an electrically active amino acid with a sulfhydryl group, L-cysteine (L-Cys) forms a more stable Ag−S bond with silver nanoparticles, which can selectively substitute trisodium citrate (TSC) in TSCcapped triangular silver nanoplates (Tri-Ag-NP/TSC). Due to the good conductivity, biocompatibility, and large surface area, MXenes provide a good platform for loading Tri-AgNP/L-Cys. Under optimized conditions, the concentration range for detecting 5-HT with the sensor is 0.5−150 μM, and the limit of detection (LOD) is 0.08 μM (S/N = 3). For detecting 5-HT in actual serum samples, the sensor also showed a good recovery rate (95.38−102.3%), and the relative standard deviation was 2.2−3.4%.

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“…UiO-66 (Universitetet i Oslo-66) is a Zirconium (IV) carboxylate MOF made up of inorganic Zr6-octahedra bounded to twelve terephthalates ligands, which offers a high surface area and porosity, excellent thermal conductivity, enrichment capability, and chemical stability [ 7 ]. Due to their affordable costs and superior electrocatalytic activity, transition metals-UiO-based nanostructure have recently been extensively studied for modifying electrochemical sensors [ [8] , [9] , [10] , [11] , [12] ]. However, the issue of UiO-66's low electrical conductivity should be addressed to expand the detection concentration range for the analyte and boost the sensor's adsorption capacity.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical immunosensor for rapid and highly sensitive detection of SARS-CoV-2 antigen in the nasal sample

Mehmandoust

Gümüş

Soylak

et al. 2022

Talanta

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A label-free electrochemical biosensing approach as an appropriate analysis technique for SARS-CoV-2 spike protein (SARS-CoV-2 S-protein) was investigated to facilitate the diagnosis of coronavirus in real samples. It is crucial to construct diagnostic features that can rapidly identify infected individuals to limit the spread of the virus and assign treatment choices. Therefore, a novel and selective method using SiO 2 @UiO-66 and a label-free electrochemical immunoassay for rapidly detecting spike protein. The development of innovative approaches for direct viral detection employing simplified and ideally reagent-free assays is a pressing and difficult topic. The absence of speedy and effective ways to diagnose viral diseases especially SARS-CoV-2 on demand has worsened the issue of combating the COVID-19 pandemic. The developed electrode illustrated a wide dynamic range of 100.0 fg mL −1 to 10.0 ng mL −1 with low limit detection. Therefore, the as-fabricated electrochemical SARS-CoV-2 S-protein sensor suggests an appropriate perspective in the point-of-care system, within 5.0 min, in nasal samples with satisfactory recovery.

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Rapid synthesis of UiO-66 by means of electrochemical cathode method with electrochemical detection of 2,4,6-TCP

Cited by 45 publications

References 53 publications

Defective Zr‐based metal–organic frameworks as sorbent for the determination of fungicides in environmental water samples by rapid dispersive micro‐solid‐phase extraction coupled to liquid chromatography/mass spectrometry

Defective Zr‐based metal–organic frameworks as sorbent for the determination of fungicides in environmental water samples by rapid dispersive micro‐solid‐phase extraction coupled to liquid chromatography/mass spectrometry

l-Cysteine-Terminated Triangular Silver Nanoplates/MXene Nanosheets are Used as Electrochemical Biosensors for Efficiently Detecting 5-Hydroxytryptamine

Electrochemical immunosensor for rapid and highly sensitive detection of SARS-CoV-2 antigen in the nasal sample

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