ZnO nanorods/Au hybrid nanocomposites for glucose biosensor

Wei, Yinyin; Li, Ying; Liu, Xiaoqian; Xian, Yuezhong; Shi, Guoyue; Jin, Litong

doi:10.1016/j.bios.2010.06.006

Cited by 112 publications

(46 citation statements)

References 41 publications

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“…Recently, magnetic nanoparticles modified with different materials have gained a lot of interest due to their potential applications. Instances contain their uses for cell separation, diagnostic magnetic resonance imaging, gene and drug delivery systems, and cancer treatments through hyperthermia [31][32][33]. Besides, iron oxide magnetic nanoparticles are of important interest for applications in catalysis, magnetic data storage, multimodal biomedical imaging, targeted drug delivery, cancer therapy and diagnosis.…”

Section: Introductionmentioning

confidence: 99%

Stability and enzyme activity of lysozyme in the presence of Fe3O4 nanoparticles

et al. 2015

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The goal of this work was investigation the effect of adsorption the Fe 3 O 4 as magnetic nanoparticle on lysozyme activity and thermal stability. The turbidimetric assay (activity) of lysozyme was followed by the decreased optical density of a turbid cell suspension (about 0.3 mg/cm 3 Micrococcus lysodeikticus) photometrically at 450 nm. In this study, the effect of nano-Fe 3 O 4 on lysozyme activity was investigated by UV-Vis spectrophotometry at pH = 7.25 at 35°C using sodium phosphate buffer. Measurements were carried out using 6 9 10 -8 M (0.1 mg/cm 3 ) concentration of lysozyme and a range of nano-Fe 3 O 4 concentrations between 0 and 0.06 mg/cm 3 . It was found that by increasing nanoFe 3 O 4 , the rate of M. lysodeikticus lyses (lysozyme activity) increases. The thermal stability of lysozyme was investigated in the presence of nano-Fe 3 O 4 over the temperature range of 293-363 K in sodium phosphate buffer and pH = 7.25. Results indicated that by increasing nano-Fe 3 O 4 , the thermal stability of lysozyme increases. Graphical abstract

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Section: Introductionmentioning

confidence: 99%

Stability and enzyme activity of lysozyme in the presence of Fe3O4 nanoparticles

et al. 2015

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“…Zinc oxide is also characterized by having excellent chemical stability, nontoxicity, and good electrical, optical, and piezoelectric properties [1]. As a result of these properties, ZnO can be used in solar cells [2], UV sensors [3], biosensors [4], and light emitting diodes [5][6][7]. Due to the correlation of the microstructure with physical properties, the synthesis of ZnO with the controlled structure and morphology is critical for scientific and technological applications.…”

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confidence: 99%

The morphology and optical properties of ZnO crystals fabricated by hydrothermal method under pulsed magnetic field

Zhong

et al. 2013

Phys. Status Solidi C

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In this study, ZnO crystals have been synthesized via hydrothermal method by adjusting the component of the precursor with the pulsed magnetic field. The effects of the molar ratio of the reactants and pulsed magnetic field applied in the synthesis process on the microstructure and optical properties of ZnO crystals were investigated systematically. The samples were characterized by X‐ray diffraction, scanning electron microscopy, UV‐Vis spectrophotometer and micro‐Raman scattering. The results demonstrate that pulsed magnetic field increases the defects concentration and reduces the band gap of ZnO. And it also promotes nucleation and crystal growth, the crystals obtained under pulsed magnetic field are more uniform and complete. The change of molar ratios influences the pH value so that the environment for the growth of ZnO crystals changed dramatically. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…Wei et al [58] grew Au nanocrystals on the surface of ZnO nanorods, via a facial hydrothermal route. The resulting composite was used as a matrix to entrap…”

Section: Zno-based Nanocomposites For Gox Immobilizationmentioning

confidence: 99%

ZnO nanostructures in enzyme biosensors

et al. 2015

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Biosensing has developed tremendously since it was demonstrated by Leland C. Clark Jr. in 1962. ZnO nanomaterials are attractive candidates for fabricating biosensors, because of their diverse range of nanostructures, high electron mobility, chemical stability, electrochemical activity, high isoelectric points which promote enzyme adsorption, biocompatibility, and piezoelectric properties. This review covers ZnO nanostructures applied in enzyme biosensors, in the light of electrochemical transduction and field effect transduction. Different assembly processes and immobilization methods have been used to load enzymes into various ZnO nanostructures, providing enzymes with favorable micro-environments and enhancing their sensing performance. We briefly describe recent trends in ZnO syntheses, and the analytical performance of the fabricated biosensors, summarize the advantages of using ZnO nanostructures in biosensors, and conclude with future challenges and prospects.

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ZnO nanorods/Au hybrid nanocomposites for glucose biosensor

Cited by 112 publications

References 41 publications

Stability and enzyme activity of lysozyme in the presence of Fe3O4 nanoparticles

Stability and enzyme activity of lysozyme in the presence of Fe3O4 nanoparticles

The morphology and optical properties of ZnO crystals fabricated by hydrothermal method under pulsed magnetic field

ZnO nanostructures in enzyme biosensors

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