Bifunctional nanozyme of copper organophyllosilicate for the ultrasensitive detection of hydroquinone

Li, Rui; Sun, Shi-Yong; Liu, Jin; Wang, Ke; Golubev, Yevgeny A.; Dong, Faqin; Kotova, O. B.; Kotova, E. L.; Nie, Xiaoqin

doi:10.1007/s00216-021-03728-3

Cited by 11 publications

(4 citation statements)

References 33 publications

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“…The above results indicated that the constructed Au/ Cu Hop nanozymes had similar catalytic activity to laccases. Furthermore, compared with previous reports (Table S1), such as CH-Cu [50], and Cu-CAP [63], Au/Cu Hop nanozymes had lower K m and higher V max , indicating that Au/Cu Hops had the higher PPO-like catalytic activity. In conclusion, the PPO-like catalytic performance and higher activity of Au/Cu Hops were associated with the presence of reduced copper species and large multi-level pore nanostructures (Figs 1 and 2).…”

Section: Evaluation Of the Ppo-like Catalytic Activity Of Au/cu Hop N...contrasting

confidence: 53%

Construction of Au/Cu hierarchically organized particles with dual-functional enzyme-like activity

Zhang

Wang

et al. 2023

Sci. China Mater.

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Nanozymes are defined as mimic enzymes with both unique nanostructures and catalytic activity. Inspired by natural enzymes, herein, we reported a dual-functional nanozyme of Au/Cu hierarchically organized particles (Hops) with excellent polyphenol oxidase-like (PPO-like) and peroxidase-like (POD-like) activities, which could rapidly oxidize refractory toxic phenolic pollutants and serve as a sensitive tool to detect biologically energy-supplying substances. Au/Cu Hop nanozymes exhibited excellent catalytic activity and recyclability and were stable under extreme conditions. Notably, Au/Cu Hop nanozymes had higher substrate affinity and 6.37 times higher V max compared with natural laccase for hydroquinone oxidation reaction at the same mass concentration. Furthermore, the cascade reaction system was constructed based on the POD-like activity of Au/Cu Hops to detect glucose concentration with a low detection limit of 5 μmol L −1 . Significantly, we demonstrated the formation of dual-catalytic active sites by Cu-S clusters on the surface of Au/Cu Hops by the molecular dynamics simulations and revealed the mimic enzyme catalysis pathway by the density functional theory calculation. This work has important implications for the construction and application of dual-functional mimetic enzymes.

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Section: Evaluation Of the Ppo-like Catalytic Activity Of Au/cu Hop N...contrasting

confidence: 53%

Construction of Au/Cu hierarchically organized particles with dual-functional enzyme-like activity

Zhang

Wang

et al. 2023

Sci. China Mater.

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“…Compared with natural enzymes, nanozymes have low cost, are easy to modify, have adjustable catalytic activity, and combine the advantages of natural enzymes and nanomaterials. In addition, artificial enzymes have higher stability under harsh conditions of existence; simultaneously, there are multiple enzyme activities, − synergies, and cascading reactions , that have been widely used in cancer treatment, , biosensing, , anti-inflammatory, , antibacterial treatment, , etc. By integrating photodynamic, photothermal, and peroxidase-mimicking activities, Yang’s team created a covalent organic framework (COF) with a conjugated donor–acceptor system for efficient photoinduced bacteriostasis.…”

Section: Introductionmentioning

confidence: 99%

CoSe₂ Nanoparticles with Multienzymic Activities for Antibacterial Applications

Zuo

Zhong

Huang

et al. 2023

ACS Appl. Nano Mater.

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Increasing bacterial resistance has led to the aggravation of diseases caused by microbial infections, posing a significant threat to human health. The multicascade approach is more efficient than a single treatment for resistant bacteria. Here, we describe the simple method of fabricating CoSe 2 nanoparticles, which operate as a single-component, multienzyme-mimicking nanoplatform for multiple ROS production. The nanoplatform simultaneously exhibits multienzymatic activities that mimic intrinsic catalase, peroxidase, and oxidase. Furthermore, under the synergistic action of 808 nm NIR, the multienzyme cascade action and ROS produced by photodynamics play a stronger role against drug-resistant extended-spectrum β-lactamase-producing Escherichia coli. Therefore, this study reveals the potential of CoSe 2 nanoparticles as efficient antimicrobial reagents, providing a promising alternative nanozyme for biomedical use.

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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%

“…33−36 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. 26 And also, phenols could be catalytically oxidized by laccase mimics 37 usually utilized to degrade phenols 38 and to design sensors for detecting a single phenol (catechol, 39 hydroquinone, 40 2chlorophenol, 41 4-chlorophenol, 42 and phenol 43 ) and even as a sensor array for multiple phenols 44−47 because multiple phenols are possibly coexisting in most cases. 48−50 As important synthetic industrial chemicals and intermediary products, aromatic amines and phenols are usually coexisting in water, 51,52 while the strategy that can simultaneously identify aromatic amines and phenols is rarely reported.…”

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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Bifunctional nanozyme of copper organophyllosilicate for the ultrasensitive detection of hydroquinone

Cited by 11 publications

References 33 publications

Construction of Au/Cu hierarchically organized particles with dual-functional enzyme-like activity

Construction of Au/Cu hierarchically organized particles with dual-functional enzyme-like activity

CoSe₂ Nanoparticles with Multienzymic Activities for Antibacterial Applications

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

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Bifunctional nanozyme of copper organophyllosilicate for the ultrasensitive detection of hydroquinone

Cited by 11 publications

References 33 publications

Construction of Au/Cu hierarchically organized particles with dual-functional enzyme-like activity

Construction of Au/Cu hierarchically organized particles with dual-functional enzyme-like activity

CoSe2 Nanoparticles with Multienzymic Activities for Antibacterial Applications

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

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Product

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CoSe₂ Nanoparticles with Multienzymic Activities for Antibacterial Applications