Construction of a colorimetric sensor array based on the coupling reaction to identify phenols

Zhong, Haotian; Xue, Yuting; Liu, Bin; Chen, Zhengbo; Li, Kai; Zuo, Xia

doi:10.1039/d1ay02076e

Cited by 2 publications

(2 citation statements)

References 51 publications

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“…Therefore, various nanomaterials with peroxidase-mimicking features have been created to develop colorimetric assays of phenols. [99][100][101][102][104][105][106]122,123 For example, Hou and co-workers designed a peroxidasemimicking hybrid via the assembly of covalent organic frameworks (COF) on magnetic Fe 3 O 4 @ZIF-8. 99 The obtained Fe 3 O 4 @ZIF-8@COF presented much enhanced activity to catalyze the reaction of 4-AAP, phenol, and H 2 O 2 , which was further employed to detect phenol.…”

Section: Detection Of Phenolic Pollutantsmentioning

confidence: 99%

Nanozymes: powerful catalytic materials for environmental pollutant detection and degradation

Diao,

Chen,

Tang

et al. 2024

Environ. Sci.: Nano

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Section: Detection Of Phenolic Pollutantsmentioning

confidence: 99%

Nanozymes: powerful catalytic materials for environmental pollutant detection and degradation

Diao,

Chen,

Tang

et al. 2024

Environ. Sci.: Nano

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“…Polycyclic aromatic hydrocarbons (PAHs) are well-known persistent organic pollutants owing to their high mutagenicity, teratogenicity, and carcinogenicity, , among which, aromatic amines and phenols are two typical types of pollutants. − Aromatic amines could be specifically and catalytically oxidized by oxidase mimics in proper buffer solution, which is used for designing sensor array to identifying multiple aromatic amines . And also, phenols could be catalytically oxidized by laccase mimics (a kind of oxidase mimics), which are usually utilized to degrade phenols and to design sensors for detecting a single phenol (catechol, hydroquinone, 2-chlorophenol, 4-chlorophenol, and phenol) and even as a sensor array for multiple phenols − because multiple phenols are possibly coexisting in most cases. − As important synthetic industrial chemicals and intermediary products, aromatic amines and phenols are usually coexisting in water, , while the strategy that can simultaneously identify aromatic amines and phenols is rarely reported. Thus, it is urgent and essential to develop an efficient approach for the simultaneous detection of aromatic amines and phenols.…”

Section: Introductionmentioning

confidence: 99%

Buffer Concentration-Dependent Catalytic Performance of Cu-Adenine Oxidase Mimic for Constructing Sensor Array for Identifying Aromatic Amines and Phenols

Gao,

Zhang,

Fang

et al. 2023

J. Phys. Chem. C

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Oxidase-mimicking nanozymes are some of the most important nanozymes, which are investigated in various buffer concentrations. However, buffer concentration-dependent catalytic performance is rarely investigated. Herein, with o-phenylenediamine (OPD) as a substrate, the catalytic performance of Cu-Adenine oxidase mimic (fabricated with Cu 2+ as an active center and adenine as a ligand) gradually decreases upon Tris−HCl buffer concentration (C Tris−HCl ) increasing from 10 to 200 mM, exhibiting buffer concentration-dependent catalytic activity. Such buffer concentration-dependent catalytic activity is believed to be because Tris−HCl and OPD competitively bind with Cu-Adenine, leading to differences in catalytic activity. Similarly, with 2,4-dichlorophenol (2,4-DP) as a substrate and 4-aminoantipyrine (4-AP) as a chromogenic agent, the same results are obtained. However, with 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 3,3′,5,5′tetramethylbenzidine (TMB) as substrates, the catalytic oxidation cannot be observed at C Tris−HCl ≥ 50 mM. Tris−HCl and substrate competitively binding with Cu-Adenine produces buffer concentration-dependent catalytic performance. Subsequently, substrates are successfully expanded to other aromatic amines (p-phenylenediamine (PPD), 1,5-naphthalenediamine (1,5-NDA), 1,8-naphthalenediamine (1,8-NDA)) and phenols (phenol, 3-cresol, 1-naphthol). Based on the results, with 50 and 150 mM Tris− HCl buffer solutions as sensing channels, a Cu-Adenine-based colorimetric sensor array is constructed for discriminating four representative aromatic amines (OPD, PPD, 1,5-NDA, 1,8-NDA) and four phenols (2, phenol, as low as 50 μM. The performance is further validated through accurately identifying binary, quaternary, and even senary and octonary mixtures. Finally, the designed sensor array is successfully applied for identifying eight representative aromatic amines and phenols in river water, seawater, and sewage water, presenting great potential and valuable applications for large-scale scanning levels of aromatic amines and phenols in water samples.

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Construction of a colorimetric sensor array based on the coupling reaction to identify phenols

Abstract: Phenols are harmful to human body and the environment. Since there are a variety of phenols in the actual samples, this requires a sensor to possess the ability to simultaneously...

Cited by 2 publications

References 51 publications

Nanozymes: powerful catalytic materials for environmental pollutant detection and degradation

Nanozymes: powerful catalytic materials for environmental pollutant detection and degradation

Buffer Concentration-Dependent Catalytic Performance of Cu-Adenine Oxidase Mimic for Constructing Sensor Array for Identifying Aromatic Amines and Phenols

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