Triple-enzyme mimetic activity of nickel–palladium hollow nanoparticles and their application in colorimetric biosensing of glucose

Wang, Qingqing; Zhang, Lingling; Shang, Changshuai; Zhang, Zhiquan; Dong, Shaojun

doi:10.1039/c6cc00194g

Cited by 146 publications

(70 citation statements)

References 26 publications

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“…The fluorescence intensity gradually decreased as the concentration of SA Co-MoS 2 continued to increase (Fig. 2d), which further indicated that the introduction of SA Co exhibited ·OH scavenging properties rather than generating ·OH [46][47][48].…”

Section: The Peroxidase-like Activity Of Sa Co-mosmentioning

confidence: 77%

Revealing the Intrinsic Peroxidase-Like Catalytic Mechanism of Heterogeneous Single-Atom Co–MoS2

et al. 2019

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HIGHLIGHTS• Single-atom Co-MoS 2 (SA Co-MoS 2 ) is prepared successfully to serve as a proof-of-concept nanozyme model, which exhibits peroxidase-like performance comparable to that of natural enzymes.• The different mechanisms between the single-atom metal center and the support are investigated experimentally and theoretically.ABSTRACT The single-atom nanozyme is a new concept and has tremendous prospects to become a next-generation nanozyme. However, few studies have been carried out to elucidate the intrinsic mechanisms for both the single atoms and the supports in single-atom nanozymes. Herein, the heterogeneous single-atom Co-MoS 2 (SA Co-MoS 2 ) is demonstrated to have excellent potential as a high-performance peroxidase mimic. Because of the well-defined structure of SA Co-MoS 2 , its peroxidase-like mechanism is extensively interpreted through experimental and theoretical studies. Due to the different adsorption energies of substrates on different parts of SA Co-MoS 2 in the peroxidase-like reaction, SA Co favors electron transfer mechanisms, while MoS 2 relies on Fenton-like reactions. The different catalytic pathways provide an intrinsic understanding of the remarkable performance of SA Co-MoS 2 . The present study not only develops a new kind of single-atom catalyst (SAC) as an elegant platform for understanding the enzyme-like activities of heterogeneous nanomaterials but also facilitates the novel application of SACs in biocatalysis.

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Section: The Peroxidase-like Activity Of Sa Co-mosmentioning

confidence: 77%

Revealing the Intrinsic Peroxidase-Like Catalytic Mechanism of Heterogeneous Single-Atom Co–MoS2

et al. 2019

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“…Herein, ZIF‐8 was chosen as a support for enzyme immobilization to establish a mimic multi‐enzyme system. NiPd hollow nanoparticles, which exhibiting outstanding peroxidase‐like catalytic activity, were successfully immobilized both inside of the ZIF‐8 crystal lattices and on the outer surfaces. The obtained ZIF‐8(NiPd) also possessed excellent property of peroxidase mimic.…”

Section: Figurementioning

confidence: 99%

GOx@ZIF‐8(NiPd) Nanoflower: An Artificial Enzyme System for Tandem Catalysis

et al. 2017

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We report af acile approacht op repare an artificial enzyme system for tandem catalysis.N iPd hollown anoparticles and glucose oxidase (GOx) were simultaneously immobilizedo nt he zeolitic imidazolate framework 8( ZIF-8) via ac o-precipitation method. The as-prepared GOx@ZIF-8-(NiPd) nanoflower not only exhibited the peroxidase-like activity of NiPd hollown anoparticles but also maintained the enzymatic activity of GOx. Ac olorimetric sensor for rapid detection of glucose was realized through the GOx@ZIF-8(NiPd) based multi-enzyme system. Moreover,t he GOx@ZIF-8(NiPd) modified electrode showed good bioactivity of GOx and high electrocatalytic activity for the oxygen reduction reaction (ORR), which could also be used for electrochemical detection of glucose.

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“…[8] Herein, ZIF-8 was chosen as as upport for enzyme immobilization to establish am imic multi-enzyme system. NiPd hollow nanoparticles,w hich exhibiting outstanding peroxidase-like catalytic activity, [9] were successfully immo-bilized both inside of the ZIF-8 crystal lattices and on the outer surfaces.T he obtained ZIF-8(NiPd) also possessed excellent property of peroxidase mimic. With glucose oxidase (GOx) and NiPd hollow nanoparticles being immobilized simultaneously on ZIF-8, an artificial enzyme system GOx@ZIF-8(NiPd) nanoflower was prepared for tandem catalysis.T he cascade reaction for the visual detection of glucose was successfully combined into one step.Inaddition, due to the competition reactions of electro-catalytic oxygen reduction and glucose oxidation, the GOx@ZIF-8(NiPd) modified glassy carbon electrode (GCE) exhibits quiet different electrochemical performance toward H 2 O 2 and glucose.…”

mentioning

confidence: 99%

GOx@ZIF‐8(NiPd) Nanoflower: An Artificial Enzyme System for Tandem Catalysis

et al. 2017

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We report a facile approach to prepare an artificial enzyme system for tandem catalysis. NiPd hollow nanoparticles and glucose oxidase (GOx) were simultaneously immobilized on the zeolitic imidazolate framework 8 (ZIF-8) via a co-precipitation method. The as-prepared GOx@ZIF-8(NiPd) nanoflower not only exhibited the peroxidase-like activity of NiPd hollow nanoparticles but also maintained the enzymatic activity of GOx. A colorimetric sensor for rapid detection of glucose was realized through the GOx@ZIF-8(NiPd) based multi-enzyme system. Moreover, the GOx@ZIF-8(NiPd) modified electrode showed good bioactivity of GOx and high electrocatalytic activity for the oxygen reduction reaction (ORR), which could also be used for electrochemical detection of glucose.

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Triple-enzyme mimetic activity of nickel–palladium hollow nanoparticles and their application in colorimetric biosensing of glucose

Cited by 146 publications

References 26 publications

Revealing the Intrinsic Peroxidase-Like Catalytic Mechanism of Heterogeneous Single-Atom Co–MoS2

Revealing the Intrinsic Peroxidase-Like Catalytic Mechanism of Heterogeneous Single-Atom Co–MoS2

GOx@ZIF‐8(NiPd) Nanoflower: An Artificial Enzyme System for Tandem Catalysis

GOx@ZIF‐8(NiPd) Nanoflower: An Artificial Enzyme System for Tandem Catalysis

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