Hollow MnFeO oxide derived from MOF@MOF with multiple enzyme-like activities for multifunction colorimetric assay of biomolecules and Hg2+

Lü, Zhiwei; Dang, Yang; Dai, Changlian; Zhang, Yan; Zou, Ping; Du, Hongguang; Zhang, Yi; Sun, Mengmeng; Rao, Hanbing; Wang, Yanying

doi:10.1016/j.jhazmat.2020.123979

Cited by 81 publications

(32 citation statements)

References 37 publications

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“…To better evaluate the enzyme-like catalytic activities of NiCo 2 O 4 , the steady-state kinetic tests were conducted by changing the initial concentration of TMB in the absence and presence of H 2 O 2 . As shown in Figure a,b, the reaction velocities were positively associated with the TMB concentration.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, the colorimetric assay based on the 3,3′,5,5′-tetrame thylbenzidine (TMB) color reaction system has attracted increasing attention in the areas related to food safety and environmental detection due to its unique advantages of being simple, rapid, and sensitive. , In general, the color reaction principle is that the colorless TMB can be converted to oxidation state TMB (namely oxTMB) by •OH generated from H 2 O 2 in the presence of catalase, thereby resulting in color variations. , Apparently, the catalase plays a major role in the TMB color reaction system, and thus, various natural enzymes with high activity have been widely employed for the decomposition of H 2 O 2 . Nevertheless, the preparation of natural enzymes is mainly achieved through fermentation, the cost of which is high.…”

Section: Introductionmentioning

confidence: 99%

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Newly Constructed NiCo₂O₄ Derived from ZIF-67 with Dual Mimic Enzyme Properties for Colorimetric Detection of Biomolecules and Metal Ions

Zhao

Liu

et al. 2021

ACS Appl. Mater. Interfaces

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Integration of novel bio-/nanostructures as effective sensing platforms is still of great significance for robust and rapid analysis. Herein, a novel metal−organic framework-derived NiCo 2 O 4 was synthesized via a feasible templating method. Significantly, redox couples of both Ni 3+ /Ni 2+ and Co 3+ /Co 2+ provided richer oxidation−reduction reactions, thereby leading to an enhanced catalytic activity. Furthermore, NiCo 2 O 4 as an enzyme mimic with peroxidase-like activity and oxidase-like activity could oxidize colorless thylbenzidine (TMB) to blue oxTMB in the absence of H 2 O 2 . Thus, a sensitive chromogenic sensing platform for detecting Fe 2+ , thiourea, cysteine (Cys), and epigallocatechin-3-gallate (EGCG) was proposed. The colorimetric detection methods exhibited great features of low limit of detection (LOD) and broad linear range. Owing to the complexation reaction, the chromogenic sensing system of TMB + NiCo 2 O 4 + Cys achieved effective detection of Cu 2+ and Mn 2+ with the LODs of 0.0022 and 0.0181 mM, respectively. Developed detection methods with wide linear ranges of 0.008−0.1 mM for Cu 2+ and 0.08−1 mM for Mn 2+ had excellent practical potential. Similarly, the reaction system of TMB + NiCo 2 O 4 + EGCG could achieve the colorimetric detection of Cu 2+ and Fe 3+ . The great chromogenic sensing performance for detecting Cu 2+ and Fe 3+ with a broad linear range and a low LOD could be also realized.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Newly Constructed NiCo₂O₄ Derived from ZIF-67 with Dual Mimic Enzyme Properties for Colorimetric Detection of Biomolecules and Metal Ions

Zhao

Liu

et al. 2021

ACS Appl. Mater. Interfaces

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“…With the help of a colorimetric/SERS dual-mode probe integrated with the advantages of facile detection by colorimetric analysis and a high-sensitivity trace assay by SERS, Au@AgPt NPs achieved the limit of detections (LODs) of colorimetric analysis of 0.52 μM and by SERS assay of 0.28 nM. Besides the noble metal examples provided, metal oxides nanomaterials can also be used to detect Hg 2+ [ 138 ].…”

Section: Nanozymes and Their Potential Applications In Biosensingmentioning

confidence: 99%

Nanozymes—Hitting the Biosensing “Target”

Darland

Zhao

2021

Sensors

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Nanozymes are a class of artificial enzymes that have dimensions in the nanometer range and can be composed of simple metal and metal oxide nanoparticles, metal nanoclusters, dots (both quantum and carbon), nanotubes, nanowires, or multiple metal-organic frameworks (MOFs). They exhibit excellent catalytic activities with low cost, high operational robustness, and a stable shelf-life. More importantly, they are amenable to modifications that can change their surface structures and increase the range of their applications. There are three main classes of nanozymes including the peroxidase-like, the oxidase-like, and the antioxidant nanozymes. Each of these classes catalyzes a specific group of reactions. With the development of nanoscience and nanotechnology, the variety of applications for nanozymes in diverse fields has expanded dramatically, with the most popular applications in biosensing. Nanozyme-based novel biosensors have been designed to detect ions, small molecules, nucleic acids, proteins, and cancer cells. The current review focuses on the catalytic mechanism of nanozymes, their application in biosensing, and the identification of future directions for the field.

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“…The FTIR spectrum (Figure S5, Supplementary Materials) of Mn-Fe PBA contains two bands of ν(CN), which are attributed to Mn III -NC-Fe II (around 2070 cm −1 ) and Mn II -NC-Fe III (around 2149 cm −1 ), indicating the existence of mixed phases in it [52]. After TGA treatment, the core of these cubic particles is first dissolved by TGA, while the shell remains intact [53], thus forming hollow Mn-Fe PBA cages (Figure S1B, Supplementary Materials). In XRD (Figure 1B), the diffraction peaks at 16.…”

Section: Synthesis and Characterization Of Hollow Mnfeomentioning

confidence: 99%

Ratiometric Colorimetric Detection of Nitrite Realized by Stringing Nanozyme Catalysis and Diazotization Together

et al. 2021

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Due to the great threat posed by excessive nitrite in food and drinking water to human health, it calls for developing reliable, convenient, and low-cost methods for nitrite detection. Herein, we string nanozyme catalysis and diazotization together and develop a ratiometric colorimetric approach for sensing nitrite in food. First, hollow MnFeO (a mixture of Mn and Fe oxides with different oxidation states) derived from a Mn-Fe Prussian blue analogue is explored as an oxidase mimic with high efficiency in catalyzing the colorless 3,3′,5,5′-tetramethylbenzidine (TMB) oxidation to blue TMBox, presenting a notable signal at 652 nm. Then, nitrite is able to trigger the diazotization of the product TMBox, not only decreasing the signal at 652 nm but also producing a new signal at 445 nm. Thus, the analyte-induced reverse changes of the two signals enable us to establish a ratiometric colorimetric assay for nitrite analysis. According to the above strategy, facile determination of nitrite in the range of 3.3–133.3 μM with good specificity was realized, providing a detection limit down to 0.2 μM. Compared with conventional single-signal analysis, our dual-signal ratiometric colorimetric mode was demonstrated to offer higher sensitivity, a lower detection limit, and better anti-interference ability against external detection environments. Practical applications of the approach in examining nitrite in food matrices were also verified.

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Hollow MnFeO oxide derived from MOF@MOF with multiple enzyme-like activities for multifunction colorimetric assay of biomolecules and Hg2+

Cited by 81 publications

References 37 publications

Newly Constructed NiCo₂O₄ Derived from ZIF-67 with Dual Mimic Enzyme Properties for Colorimetric Detection of Biomolecules and Metal Ions

Newly Constructed NiCo₂O₄ Derived from ZIF-67 with Dual Mimic Enzyme Properties for Colorimetric Detection of Biomolecules and Metal Ions

Nanozymes—Hitting the Biosensing “Target”

Ratiometric Colorimetric Detection of Nitrite Realized by Stringing Nanozyme Catalysis and Diazotization Together

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Hollow MnFeO oxide derived from MOF@MOF with multiple enzyme-like activities for multifunction colorimetric assay of biomolecules and Hg2+

Cited by 81 publications

References 37 publications

Newly Constructed NiCo2O4 Derived from ZIF-67 with Dual Mimic Enzyme Properties for Colorimetric Detection of Biomolecules and Metal Ions

Newly Constructed NiCo2O4 Derived from ZIF-67 with Dual Mimic Enzyme Properties for Colorimetric Detection of Biomolecules and Metal Ions

Nanozymes—Hitting the Biosensing “Target”

Ratiometric Colorimetric Detection of Nitrite Realized by Stringing Nanozyme Catalysis and Diazotization Together

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Product

Resources

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Newly Constructed NiCo₂O₄ Derived from ZIF-67 with Dual Mimic Enzyme Properties for Colorimetric Detection of Biomolecules and Metal Ions

Newly Constructed NiCo₂O₄ Derived from ZIF-67 with Dual Mimic Enzyme Properties for Colorimetric Detection of Biomolecules and Metal Ions