Structuring Au nanoparticles on two-dimensional MoS2 nanosheets for electrochemical glucose biosensors

Parlak, Onur; İncel, Anıl; Uzun, Lokman; Turner, Anthony; Tiwari, Ashutosh

doi:10.1016/j.bios.2016.03.024

Cited by 184 publications

(99 citation statements)

References 24 publications

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“…In Srivastava's work, dodecanethiol-protected MoS 2 nanosheets and dodecanethiol-capped CuInS 2 quantum dots were simply mixed together to produce hybrids via their hydrophobic interaction, exhibiting an efficient charge separation and transfer between quantum dots and nanosheets with 20% and 50% enhancement in photocurrent compared with pure quantum dots and pristine MoS 2 nanosheets . [112] In addition, GaTe sheets were vertically stacked on MoS 2 nanosheets via van der Waals interaction to form p-n junctions. It is noted that hydrogen evolution was not observed by using WS 2 nanosheets alone.…”

Section: Surface Hybridization With Other Nanostructuresmentioning

confidence: 99%

Functionalized Hybridization of 2D Nanomaterials

Guan

Han

2019

Advanced Science

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The discovery of graphene and subsequent verification of its unique properties have aroused great research interest to exploit diversified graphene‐analogous 2D nanomaterials with fascinating physicochemical properties. Through either physical or chemical doping, linkage, adsorption, and hybridization with other functional species into or onto them, more novel/improved properties are readily created to extend/expand their functionalities and further achieve great performance. Here, various functionalized hybridizations by using different types of 2D nanomaterials are overviewed systematically with emphasis on their interaction formats (e.g., in‐plane or inter plane), synergistic properties, and enhanced applications. As the most intensely investigated 2D materials in the post‐graphene era, transition metal dichalcogenide nanosheets are comprehensively investigated through their element doping, physical/chemical functionalization, and nanohybridization. Meanwhile, representative hybrids with more types of nanosheets are also presented to understand their unique surface structures and address the special requirements for better applications. More excitingly, the van der Waals heterostructures of diverse 2D materials are specifically summarized to add more functionality or flexibility into 2D material systems. Finally, the current research status and faced challenges are discussed properly and several perspectives are elaborately given to accelerate the rational fabrication of varied and talented 2D hybrids.

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Section: Surface Hybridization With Other Nanostructuresmentioning

confidence: 99%

Functionalized Hybridization of 2D Nanomaterials

Guan

Han

2019

Advanced Science

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“…The fast and reliable determination of glucose is very important in the analysis of the food industry and medical applications. However, the proposed materials generally suffer from low sensitivity and low current response due to the poor mass transport . Different nanomaterial such as graphene, rGO, and carbon nanotubes have been widely used to develop glucose biosensors thanks to their good biocompatibility to enzymes, high specific surface area, and high electron transfer rate .…”

Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide/Pt Nanoparticles/Zn‐MOF‐74 Nanomaterial for a Glucose Biosensor Construction

Uzak

Atiroğlu

et al. 2019

Electroanalysis

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In this study, a new glucose biosensor was fabricated by immobilizing glucose oxidase (GOx) on platinum nanoparticles (Pt NPs) decorated reduced graphene oxide (rGO)/Zn‐MOF‐74 hybrid nanomaterial. Herein, the biosensor fused the advantages of rGO with those of porous Zn‐MOF and conductive Pt NPs. This has not only enlarged the surface area and porosity for the efficient GOx immobilization and faster mass transport, but also provided favorable electrochemical features such as high current density, remarkable electron mobility through metal nanoparticles, and improved electron transfer between the components. The GOx‐rGO/Pt NPs@Zn‐MOF‐74 coated electrode displayed a linear measurement range for glucose from 0.006 to 6 mM, with a detection limit of 1.8 μM (S/N: 3) and sensitivity of 64.51 μA mM−1 cm−2. The amperometric response of the enzyme biosensor demonstrated the typical behavior of Michaelis‐Menten kinetics. The obtained satisfying sensitivity and measurement range enabled fast and accurate glucose measurement in cherry juice using the fabricated biosensor. The water‐stable Zn‐MOF‐74 demonstrated higher enzyme loading capacity and can be potent supporting material for biosensor construction.

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“…Studies have shown that the incorporation of gold nanopartuciels (AuNPs) at the interfaces of nanohybrids leads to an increase in the electrobiocatalytic activities of such devices . This is due to the introduction of current amplification features by the AuNPs at the interface, and the synergistic effect of the smart nano‐hybrid combinations leading to improved conductivity, good stability and high electrocatalytic activity . It is a known fact that the presence of oxygenated functional groups in the graphene oxide (GO), (though enhances biocompatibility through improved hydrophilicity) leads to decreased conductivity .…”

Section: Introductionmentioning

confidence: 71%

Hierarchically Assembled Two‐dimensional Hybrid Nanointerfaces: A Platform for Bioelectronic Applications

et al. 2018

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We introduce a hybrid two‐dimensional nanointerface structure for bioelectronic systems. We fabricated smart hierarchically self‐assembled 2D electrobiocatalytic interface system based on the combination of gold nanoparticles doped graphene oxide (GO)‐molybdenum disulfide (MoS2) layered nanohybrid, conjugated with poly (N‐isopropylacrylamide, PNIPAAm) resulting in GO/AuNPs/MoS2/PNIPAAm interface. Horseradish peroxidase (HRP) was subsequently immobilized on the GO/AuNPs/MoS2/PNIPAAm interface through electrostatic interactions giving GO/AuNPs/MoS2/PNIPAAm/Peroxidase electrobiocatalytic interface system as a platform for electrobiocatalysis reactions for biosensing and bioelectronic applications. The electrobiocatalytic activity of the nanohybrid interface structure was studied using hydrogen peroxide (H2O2) as a model analyte. Cyclic Voltammetry showed diffusion controlled electron transfer properties at the interface. The fabricated bioelectrode exhibits a wide linear response to the detection of H2O2 from 1.57 to 11.33 mM, with a detection limit of 3.34 mM (S/N=3) and a capacitance of 8.6 F/cm2.

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Structuring Au nanoparticles on two-dimensional MoS2 nanosheets for electrochemical glucose biosensors

Cited by 184 publications

References 24 publications

Functionalized Hybridization of 2D Nanomaterials

Functionalized Hybridization of 2D Nanomaterials

Reduced Graphene Oxide/Pt Nanoparticles/Zn‐MOF‐74 Nanomaterial for a Glucose Biosensor Construction

Hierarchically Assembled Two‐dimensional Hybrid Nanointerfaces: A Platform for Bioelectronic Applications

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