Experiment and theoretical insights into CuNi/CoMoO4 multi-functional catalyst with laccase-like: Catalysis mechanism, smartphone biosensing and organic pollutant efficient degradation

Sun, Mengmeng; Dang, Yang; Du, Ran; Lü, Zhiwei; Wang, Yanying; Wang, Xianxiang; Song, Chang; Liu, Tao; Wang, Guangtu; Ye, Jianshan; Rao, Hanbing

doi:10.1016/j.cej.2021.130586

Cited by 29 publications

(13 citation statements)

References 55 publications

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“…In the previous work, CoMoO 4 was successfully synthesized by the hydrothermal method. 9 Subsequently Ni/CoMoO 4 was synthesized by in situ chemical reduction. Briefly, 0.0387 g of NiCl 2 •6H 2 O and prepared CoMoO 4 (0.04 g) were dissolved in deionized water (20 mL), and the resulting solution was stirred for 3 h. Then NaHB 4 (10 mL, 10 mg•mL −1 ) was added slowly, and stirring was continued for 5 h. Finally, Ni/CoMoO 4 was gained through centrifugation and washing with ultrapure water and ethanol for three times and then drying at 80 °C.…”

Section: Methodsmentioning

confidence: 99%

“…In the previous work, CoMoO 4 was successfully synthesized by the hydrothermal method . Subsequently Ni/CoMoO 4 was synthesized by in situ chemical reduction.…”

Section: Methodsmentioning

confidence: 99%

“…In recent years, due to the shortcomings of natural enzymes, for instance their ease of inactivation and high storage cost, the development of nanozymes has been promoted. Nanozymes are a kind of nanomaterials with enzyme-like activity − which have attracted increasing interest and been widely used in analytical detection, medical diagnosis, and biosensing. − Inspired by natural enzymes, many nanomaterials have been proven to have the activities of oxidase, peroxidase, laccase, , and dehydrogenases, for example, metal organic frameworks (MOFs), metallic oxide, and metal molybdate compounds and their corresponding complexes . Unfortunately, due to the lack of predictable descriptors, the current exploration of nanozyme activity is mainly through trial-and-error strategies .…”

Section: Introductionmentioning

confidence: 99%

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Rational Construction of a Ni/CoMoO₄ Heterostructure with Strong Ni–O–Co Bonds for Improving Multifunctional Nanozyme Activity

Dang¹,

Wang²,

Su³

et al. 2022

ACS Nano

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Due to the lack of a general descriptor to predict the activity of nanomaterials, the current exploration of nanozymes mainly depended on trial-and-error strategies, which hindered the effective design of nanozymes. Here, with the help of a large number of Ni−O−Co bonds at the interface of heterostructures, a prediction descriptor was successfully determined to reveal the double enzyme-like activity mechanisms for Ni/CoMoO 4 . Additionally, DFT calculations revealed that interface engineering could accelerate the catalytic kinetics of the enzyme-like activity. Ni−O−Co bonds were the main active sites for enzyme-like activity. Finally, the colorimetric signal and intelligent biosensor of Ni/CoMoO 4 based on deep learning were used to detect organophosphorus and ziram sensitively. Meanwhile, the in situ FTIR results uncovered the detection mechanism: the target molecules could block Ni−O− Co active sites at the heterostructure interface leading to the signal peak decreasing. This study not only provided a well design strategy for the further development of nanozymes or other advanced catalysts, but it also designed a multifunctional intelligent biosensor platform. Furthermore, it also provided preferable ideas regarding the catalytic mechanism and detection mechanism of heterostructure nanozymes.

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Section: Methodsmentioning

confidence: 99%

“…In the previous work, CoMoO 4 was successfully synthesized by the hydrothermal method . Subsequently Ni/CoMoO 4 was synthesized by in situ chemical reduction.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Rational Construction of a Ni/CoMoO₄ Heterostructure with Strong Ni–O–Co Bonds for Improving Multifunctional Nanozyme Activity

Dang¹,

Wang²,

Su³

et al. 2022

ACS Nano

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“…Similar results have been reported in other studies that also found that laccase and its mimic enzyme have different catalytic effects on phenols. [55,56] The above conclusions and references fully prove that GMP-Cu has different effects on phenolic substances. Therefore, a colorimetric sensor may be developed to discriminate phenols.…”

Section: Differences In Oxidation Of Phenols Using Gmp-cumentioning

confidence: 62%

An efficient differential sensing strategy for phenolic pollutants based on a nanozyme with polyphenol oxidase activity

et al. 2022

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To realize the efficient differential sensing of phenolic pollutants in sewage, a novel sensing strategy was successfully developed based on a nanozyme (GMP‐Cu) with polyphenol oxidase activity. Phenolic pollutants can be oxidized using GMP‐Cu, and the oxidation products reacts subsequently with 4‐aminoantipyrine to produce a quinone‐imine compound. The absorption spectra of final quinone‐imine products that resulted from different phenolic pollutants showed obvious differences, which were due to the interaction difference between GMP‐Cu and phenolic pollutants, as well as the different molecular structures of the quinone‐imine products from different phenolic pollutants. Based on the difference in the absorption spectra, a novel differential sensing strategy was developed. A genetic algorithm was used to select the characteristic wavelengths at different enzymatic reaction times. Hierarchical cluster analysis and PLS‐DA algorithms were utilized for the discriminant sensing of seven representative phenolic pollutants, including hydroquinone, resorcinol, catechol, resorcinol, phenol, p‐chlorophenol, and 2,4‐dichlorophenol. A scientific wavelength selection algorithm and a recognition algorithm resulted in the successful identification of phenolic pollutants in sewage with a discriminant accuracy of 100%, and differentiation of the phenolic pollutants regardless of their concentration. These results indicated that a sensing strategy can be used as an effective tool for the efficient identification and differentiation of phenolic pollutants in sewage.

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“…Moreover, Cu SSN showed good linearity in the epinephrine concentration range of 0.5–100 μg mL –1 with a 0.10 μg mL –1 limit of detection (LOD), which is lower than most currently reported epinephrine colorimetric biosensors (Table S4). − ,− …”

Section: Resultsmentioning

confidence: 99%

Solid Migration to Assemble a Flower-like Nanozyme with Highly Dense Single Copper Sites for Specific Phenol Oxidation

Chen

Zhang

Tian

et al. 2022

ACS Appl. Mater. Interfaces

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Nanozymes with high catalytic stability and sustainability have emerged as powerful competitors to natural enzymes for diverse biocatalytic applications. However, constructing a nanozyme with high specificity is one of their biggest challenges. Herein, we develop a facile solid migration strategy to access a flower-like single copper site nanozyme (Cu SSN) via direct transformation of copper foam activated by 2-methylimidazole. With highly clustered CuN3 sites whose local structure is similar to that of natural polyphenol oxidase, the Cu SSN exhibits excellent activity and specificity to oxidize phenols without peroxidase-like activity. Furthermore, the Cu SSN shows high sensitivity in the colorimetric detection of epinephrine with a low detection limit of 0.10 μg mL–1, exceeding that of most previously reported enzyme-mimicking catalysts. This work not only provides a simple method for the large-scale preparation of high-performance nanozymes but also offers an inspiration for the design of highly specific nanozymes by mimicking the synergy among sites in natural enzymes.

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Experiment and theoretical insights into CuNi/CoMoO4 multi-functional catalyst with laccase-like: Catalysis mechanism, smartphone biosensing and organic pollutant efficient degradation

Cited by 29 publications

References 55 publications

Rational Construction of a Ni/CoMoO₄ Heterostructure with Strong Ni–O–Co Bonds for Improving Multifunctional Nanozyme Activity

Rational Construction of a Ni/CoMoO₄ Heterostructure with Strong Ni–O–Co Bonds for Improving Multifunctional Nanozyme Activity

An efficient differential sensing strategy for phenolic pollutants based on a nanozyme with polyphenol oxidase activity

Solid Migration to Assemble a Flower-like Nanozyme with Highly Dense Single Copper Sites for Specific Phenol Oxidation

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Experiment and theoretical insights into CuNi/CoMoO4 multi-functional catalyst with laccase-like: Catalysis mechanism, smartphone biosensing and organic pollutant efficient degradation

Cited by 29 publications

References 55 publications

Rational Construction of a Ni/CoMoO4 Heterostructure with Strong Ni–O–Co Bonds for Improving Multifunctional Nanozyme Activity

Rational Construction of a Ni/CoMoO4 Heterostructure with Strong Ni–O–Co Bonds for Improving Multifunctional Nanozyme Activity

An efficient differential sensing strategy for phenolic pollutants based on a nanozyme with polyphenol oxidase activity

Solid Migration to Assemble a Flower-like Nanozyme with Highly Dense Single Copper Sites for Specific Phenol Oxidation

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Rational Construction of a Ni/CoMoO₄ Heterostructure with Strong Ni–O–Co Bonds for Improving Multifunctional Nanozyme Activity

Rational Construction of a Ni/CoMoO₄ Heterostructure with Strong Ni–O–Co Bonds for Improving Multifunctional Nanozyme Activity