One-Pot Synthesis of Fe<sub>3</sub>O<sub>4</sub> Nanoparticle Loaded 3D Porous Graphene Nanocomposites with Enhanced Nanozyme Activity for Glucose Detection

Wang, Qingqing; Zhang, Xueping; Huang, Liang; Zhang, Zhiquan; Dong, Shaojun

doi:10.1021/acsami.6b16034

Cited by 190 publications

(87 citation statements)

References 56 publications

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“…Thanks to the development of nanotechnology, significant progress has been made in the design of various functional NPs as highly active enzyme‐like catalysts. [5b,12a,f,14] For instance, the synergistic effect of enhanced enzyme‐like activity was observed for g‐C 3 N 4 ‐AuNPs hybrid by growing AuNPs on ultrathin graphitic carbon nitride,[14i] Fe 3 O 4 [3c] and 3D porous grapheme, AuNPs@MIL‐101@GOx, and AuNPs@MIL‐101@LOx integrative nanozymes by assembling glucose oxidase (GOx) and lactate oxidase (LOx) onto AuNPs@MIL‐101 …”

Section: The Structure Of Nanozymesmentioning

confidence: 99%

Recent Advances in Nanozyme Research

2018

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inflammatory response to combat infections and can also react with many important biomolecules including proteins, lipids, and nucleic acid polymers (RNA and DNA). [7] Low dosage of ROS plays important roles in signal transduction, cell proliferation/migration/differentiation, and body defense against pathogen invasion. However, abnormally elevated ROS level can destroy redox homeostasis and cause oxidative stress and serious damage of structure and function of macromolecules in the cell. Research during the last decade has shown that oxidative stress could lead to diseases such as chronic inflammation and eventually diabetes, cancer, as well as cardiovascular, neurological, and pulmonary diseases. [8] Enzyme systems (e.g., superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase) are responsible for protecting cells from the detrimental effects of ROS by modulating the intracellular ROS level.Nanozyme can also modulate the ROS level in cells (Figure 2). [9] The ROS scavenging abilities of nanozymes largely originate from the SOD mimicking activities, which convert superoxide into H 2 O 2 and subsequently to O 2 and H 2 O, and thus reduce the intracellular ROS level and enhance cell viability. The generation of ROS originates from their peroxidases (POD) activities, which convert H 2 O 2 to OH· radicals, and oxidase activities, which convert O 2 to H 2 O 2 . Outside the cell, ROS can react with biologically active molecules (such as glucose, dopamine, glutathione, and adenosine triphosphate), organic compound (such as phenol and dyes), and pollutants from aqueous solutions. Thus the nanozymes could play important roles in in vitro test and environmental protection. [10] Earlier reports on nanozymes mainly focused on the aspect of experimental study and rarely focused on the theoretical work and mechanism clarification. In this progress report, we first introduce various nanozymes and highlight recent experimental development of new nanozymes that have been investigated to mimic various enzymes. Then we review their applications in various fields including biosensing, bioimaging, therapeutics, and environmental protection. At last, we summarize the catalytic mechanisms and address the challenges of experimental and computational research in this field. The Structure of NanozymesIssues of material design for high catalytical activity, selectivity, and durability are recently accentuated. Among them As a new generation of artificial enzymes, nanozymes have the advantages of high catalytic activity, good stability, low cost, and other unique properties of nanomaterials. Due to their wide range of potential applications, they have become an emerging field bridging nanotechnology and biology, attracting researchers in various fields to design and synthesize highly catalytically active nanozymes. However, the thorough understanding of experimental phenomena and the mechanisms beneath practical applications of nanozymes limits their rapid development. Herein, the progress of experimental and computational...

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Section: The Structure Of Nanozymesmentioning

confidence: 99%

Recent Advances in Nanozyme Research

2018

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“…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. As ar esult, an ovel electrochemical sensor for glucose detection could also be fabricated based on the obtained nanoflower.More importantly,our strategy was applicable to other nanozymes [10] and proteins such as Cyt ca nd horseradish peroxidase (HRP). As ar esult, an ovel electrochemical sensor for glucose detection could also be fabricated based on the obtained nanoflower.More importantly,our strategy was applicable to other nanozymes [10] and proteins such as Cyt ca nd horseradish peroxidase (HRP).…”

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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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“…The Fe3O4 NPs are soft-magnetic materials (Figures 6(a) and 6(b)), which is indicated by the narrow hysteresis curve area (Figure 6(a)). Even when wrapped with rGO as a core-shell, it is still softmagnetic [39], but its strong magnetization has dropped dramatically. Iron is a type of paramagnetic material, where the magnetization is positive (<10 5 order); and this magnetite material is a superparamagnetic type [51].…”

Section: Magnetic Properties By Vsm Of Fe3o4/rgo Nanoparticlesmentioning

confidence: 99%

“…It has the potential to be used in a sensor to detect the presence of arsenic in mineral water [35,36], and wastewater treatment [37]. Some methods of synthesis of Fe3O4@rGO composites are solvothermal [38], hydrothermal [28,29], one-pot hydrothermal [27,39], in-situ hydrothermal [22,26,39], in-situ chemical [24], and ex-situ chemical [40]. Each of these methods has its own advantages and, generally, the methods are simple.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Fe3O4/rGO Composites from Natural Sources: Application for Dyes Color Degradation in Aqueous Solution

Munasir

Kusumawati

et al. 2020

IJE

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A B S T R A C TThe magnetite (Fe3O4) nanoparticle and graphene oxide (GO) have become interesting materials due to their advanced applications. In this work, we investigated the fabrication of Fe3O4 nanoparticles (NPs) from iron sands and reduced graphene oxide (rGO) NPs from natural graphite. The core-shell fabrication of the Fe3O4/rGO was conducted by means of ex-situ method using ethanol as the medium. The crystal structure of Fe3O4/rGO was observed using X-ray diffraction (XRD) and functional groups were examined using Fourier transform infra-red (FTIR) spectroscopy. The characteristic of the disturbance originated by carbon atoms was investigated by Raman spectroscopy. The morphological, particle sizes and formation studied with transmission electron microscopy (TEM). The magnetic properties were analyzed using vibrating sample magnetometer (VSM). Furthermore, analysis of the adsorption performance, namely: dye-removal efficiency (DRE) and degradation rate (DR), as candidate materials absorbent were performed by means of UV-Vis spectroscopy. The data analysis of structure and phase of Fe3O4/rGO presented cubic spinel structure with crystallite size of 26-38 nm. The functional group analysis presented the existence of C-OH, C=O, C-O, and Fe-O. The micrograph analysis from the TEM image showed the particle size of the sample was in the range of 10 -30 nm. Along with the thickening shell, the saturation magnetization of Fe3O4/rGO decreased from 22.60 to 18.48 emu/g and decreased from 29.21 to 10.45 emu/g for Fe3O4. Finally, the rGO composition affects the shell wall, which encloses Fe3O4 as the core. Interestingly, an increase in absorption characteristic of natural dyes Fe3O4/rGO enhanced by the decrease of the shell thickness.

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One-Pot Synthesis of Fe₃O₄ Nanoparticle Loaded 3D Porous Graphene Nanocomposites with Enhanced Nanozyme Activity for Glucose Detection

Cited by 190 publications

References 56 publications

Recent Advances in Nanozyme Research

Recent Advances in Nanozyme Research

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

Characterization of Fe3O4/rGO Composites from Natural Sources: Application for Dyes Color Degradation in Aqueous Solution

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One-Pot Synthesis of Fe3O4 Nanoparticle Loaded 3D Porous Graphene Nanocomposites with Enhanced Nanozyme Activity for Glucose Detection

Cited by 190 publications

References 56 publications

Recent Advances in Nanozyme Research

Recent Advances in Nanozyme Research

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

Characterization of Fe3O4/rGO Composites from Natural Sources: Application for Dyes Color Degradation in Aqueous Solution

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One-Pot Synthesis of Fe₃O₄ Nanoparticle Loaded 3D Porous Graphene Nanocomposites with Enhanced Nanozyme Activity for Glucose Detection