Enhancing the peroxidase-like activity of MIL-88B by ligand exchange with polydopamine

Hu, Changzhi; Xiong, Yuhao; Liang, Ling; Zuo, Wei; Ye, Fanggui; Zhao, Shulin

doi:10.1039/d1dt03832j

Cited by 7 publications

(2 citation statements)

References 31 publications

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“…XRD patterns in Figure A show that parent MIL-88B has characteristic peaks at 9.1, 9.6, 10.6, 16.9, and 21.6°, corresponding to the (001), (100), (101), (103), and (211) facets, respectively . These diffraction peaks are consistent with the literature. , Cu@MIL-88B maintained similar characteristic peaks with MIL-88B, supporting the fact that the crystalline structure of MIL-88B was well preserved after the loading of the copper. The characteristic peaks of CuCl and CuCl 2 were also found in the XRD patterns of Cu@MIL-88B and their intensity increased with Cu loading, indicating the increase of the CuCl and CuCl 2 crystal particle size.…”

Section: Resultssupporting

confidence: 85%

Effects and Mechanisms of Cu Species in Fe-MOFs on Fenton-Like Catalytic Activity and Stability

Song

Han

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Fe-based MOFs (Fe-MOFs) are deemed promising Fenton-like catalysts due to their well-developed pores and accessible active sites. However, their inferior catalytic activity, iron leaching, and low H2O2 utilization always hinder their application as Fe-based MOF catalysts. In this work, we manipulated the structure of Fe-oxo nodes in MIL-88B(Fe) via a CuI species substitution method, affording a mixed-valence (Cu-incorporated Fe-MOFs) with highly improved Fenton-like performance. It is found that the CuI serves as a shuttle to promote transfer between FeII/FeIII, inducing the formation of a larger amount of stable FeII sites, which was proven by experimental and DFT calculation results. A linear relationship was observed for the Fenton-like performance and the amount of CuI species for the catalysts. The corresponding value of the •OH formation is 2.17 eV for Cu-incorporated MIL-88B(Fe), which is significantly lower than that of MIL-88B(Fe) (2.69 eV). Meanwhile, the enriched CuI species suppress Fe species leaching during the catalytic reaction. The Fe-ion leakage of 0.4Cu@MIL-88B is very tiny (0.01–0.03 mg/L), significantly less than that of MIL-88B (2.00–3.02 mg/L). At the same time, H2O2 utilization for 0.4Cu@ MIL-88B(Fe) is 88%, which is almost 4.4 times that of pure MIL-88B(Fe). This work provides insights into the rational design of Fe-MOFs as promising Fenton-like catalysts for wastewater treatment.

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Section: Resultssupporting

confidence: 85%

Effects and Mechanisms of Cu Species in Fe-MOFs on Fenton-Like Catalytic Activity and Stability

Song

Han

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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“…As the fact that the catalytic reactions of nanozymes occur on the surfaces of nanoparticles, improving the surface catalytic microenvironment is crucial for regulating the catalytic activity. , To date, various functional groups have been used to modify the surfaces of nanozymes, including anions, , nucleoside triphosphates, , dextran, , and amino acids, , among others. − These previous studies have demonstrated that surface modification is an effective means to regulate the catalytic activities of nanozymes. However, most studies carried out to date have focused on peroxidase- and oxidase-like redox-type nanozymes.…”

Section: Introductionmentioning

confidence: 99%

Dipeptide Surface Modification and Ultrasound Boosted Phosphatase-Like Activity of the Ceria Nanozyme: Dual Signal Enhancement for Colorimetric Sensors

Xiong

Zhang

et al. 2022

ACS Sustainable Chem. Eng.

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The development of innovative nanozymes with superior enzyme-mimicking activities for colorimetric sensor applications has attracted substantial attention in recent years; however, their application has remained challenging in sensitive colorimetric detection owing to their low catalytic activities. The construction of a more efficient nanozyme-based catalytic system would therefore be expected to improve the detection sensitivities of colorimetric sensors. Herein, we report the development of a highly reactive phosphatase-like nanozyme (carnosine-modified nanoceria, CMNC) engineered by introducing distal imidazole-containing amino acid residues onto the nanoceria surfaces to mimic the reaction microenvironment of the native phosphatase. The obtained results showed that CMNC presented a significantly enhanced catalytic activity compared to the bare nanoceria, furthermore discovering that ultrasonic stimulation significantly enhanced the phosphatase-like catalytic performance of CMNC. Based on these findings, as a proof-of-concept demonstration, two ultrasensitive nanozyme-based colorimetric immunoassays were developed for quantifying the C-reactive protein and prostate-specific antigen. Benefiting from the surface modification and ultrasound-enhanced phosphatase-like activity of CMNC, this dual signal-enhancing strategy improved the performances of the corresponding colorimetric sensors, and an approximately 50-fold higher sensitivity was achieved compared to that of the bare nanoceria without ultrasonic irradiation. These results pave the way for the use of nanozymes in highly sensitive biosensors.

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Copper Nanoclusters Imparted Metalloporphyrin Based Metal‐Organic Frameworks for Enhanced CO₂ Electroreduction

Wang,

Feng,

Rong

et al. 2024

Chemistry A European J

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Strategies that can introduce catalytic auxiliary into electrocatalysts to boost the performance of electrocatalytic CO2 reduction reaction (CO2RR) are meaningful in exploring hybrid electrocatalytic systems. Here, a series of hybrid elelctrocatalysts (Cu NCs@MOF‐545‐M, M = Fe, Co and Ni) have been prepared by assembly Cu NCs with MOF‐545‐M (M = Fe, Co and Ni) and successfully applied in electrocatalytic CO2RR. In the obtained MOF‐545‐M (M = Fe, Co and Ni), the integration of Cu NCs with MOF‐545‐M (M = Fe, Co and Ni) can create a hybrid electrocatalytic system that enhances the charge transfer efficiency and electrocatalytic CO2RR activity. Specifically, the optimal Cu NCs@MOF‐545‐Co achieves high FECO (100%), CO generation rate (10.9 mol m‐2 h‐1) and energy efficiency (69%), which is superior to Cu NCs and MOF‐545‐Co, and represented to be one of the best performances to date. This work demonstrates a facile approach to significantly improve the FECO by loading metal nanoclusters into MOFs, providing a valuable reference for future studies on hybridization strategies to enhance the performance of electrocatalysts.

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Enhancing the peroxidase-like activity of MIL-88B by ligand exchange with polydopamine

Abstract: Metal-organic framework (MOF) as nanozymes has been widely used in biosensing. However, MOF has inherent defects of easy agglomeration, leading to stacking of active surfaces. In addition, the low conductivity...

Cited by 7 publications

References 31 publications

Effects and Mechanisms of Cu Species in Fe-MOFs on Fenton-Like Catalytic Activity and Stability

Effects and Mechanisms of Cu Species in Fe-MOFs on Fenton-Like Catalytic Activity and Stability

Dipeptide Surface Modification and Ultrasound Boosted Phosphatase-Like Activity of the Ceria Nanozyme: Dual Signal Enhancement for Colorimetric Sensors

Copper Nanoclusters Imparted Metalloporphyrin Based Metal‐Organic Frameworks for Enhanced CO₂ Electroreduction

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Enhancing the peroxidase-like activity of MIL-88B by ligand exchange with polydopamine

Abstract: Metal-organic framework (MOF) as nanozymes has been widely used in biosensing. However, MOF has inherent defects of easy agglomeration, leading to stacking of active surfaces. In addition, the low conductivity...

Cited by 7 publications

References 31 publications

Effects and Mechanisms of Cu Species in Fe-MOFs on Fenton-Like Catalytic Activity and Stability

Effects and Mechanisms of Cu Species in Fe-MOFs on Fenton-Like Catalytic Activity and Stability

Dipeptide Surface Modification and Ultrasound Boosted Phosphatase-Like Activity of the Ceria Nanozyme: Dual Signal Enhancement for Colorimetric Sensors

Copper Nanoclusters Imparted Metalloporphyrin Based Metal‐Organic Frameworks for Enhanced CO2 Electroreduction

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Product

Resources

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Copper Nanoclusters Imparted Metalloporphyrin Based Metal‐Organic Frameworks for Enhanced CO₂ Electroreduction