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Recent trends and technical advancements in biosensors and their emerging applications in food and bioscience

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Food Bioscience 2022年第3期47卷 1023-1050页

作者： Oluwatosin E.Bankole Deepak Kumar Verma Mónica L.Chávez González Juan Guzmán Ceferino JoséSandoval-Cortés Cristóbal N.Aguilar Department of Chemical Sciences Faculty of Science and Science EducationAnchor UniversityLagos StateNigeria Agricultural and Food Engineering Department Indian Institute of Technology KharagpurKharagpur721302West BengalIndia Bioprocesses Research Group Food Research DepartmentSchool of ChemistryUniversidad Autonoma de CoahuilaUnidad Saltillo25280CoahuilaMexico Los Ríos Multidisciplinary Academic Division Universidad Juárez Autónoma de TabascoTabascoMexico Department of Analytical Chemistry School of ChemistryUniversidad Autonoma de CoahuilaUnidad Saltillo25280CoahuilaMexico

Biosensor development has recently advanced as a result of their strong and indisputable uses as analytical methods in a variety of sectors,including medicine,food industry,environmental monitoring,metabolism,agriculture,military,and *** popularity of biosensors as devices for a variety of applications may be ascribed to their distinct advantages of fast or rapid analysis,high sensitivity,minimal sample demand and preparation,and no need for the specific skill of operation that traditional analytical procedures *** attempted to update earlier studies in this study by incorporating other materials that have been in use but have received less attention,such as carbon nano-onions(CNOs),metal-organic frameworks(MOFs),and biopolymers for biosensor manufacturing and design based on their unique *** assessment also took into account applicable applications in many *** considerable progress has been made in the application of biosensors,there is still a need for research development and enhancement,particularly in transforming most of the laboratory experiments that have already been published into portable on-site and implementable in the public domains.

关键词： Biosensors nanotechnology nano-materials Food quality and safety Food snd biomedical industry Industrial application

Synthesis and Characterization of Copper Substituted Nickel nano-Ferrites by Citrate-Gel Technique

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Advances in materials Physics and Chemistry 2012年第3期2卷 192-199页

作者： R. Sridhar Dachepalli Ravinder K. Vijaya Kumar Department of Physics Jawaharlal Nehru Technological University Hyderabad College of Engineering Hyderabad India Department of Physics Osmania University Hyderabad India Vignan’s Institute of Technology & Aeronautical Engineering College Deshmukhi India

Mixed Copper substituted Nickel nano-ferrites having the chemical formula Ni1-xCuxFe2O4 (where x = 0, 0.2, 0.4, 0.6, 0.8, 0.9 and 1.0) were synthesized by citrate gel technique. The crystal structure characterization and morphology were investigated by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). An elemental composition of the samples were studied by energy dispersive X-ray Spectroscopy (EDS). Lattice parameter, X-ray density, Volume of the Unit Cell and The values of the hopping length for octahedral (dB) and tetrahedral (dA) sites were calculated. The observed results can be explained on the basis of composition.

关键词： Ferrites nano-materials X-Ray Diffraction SEM EDS

Fine Control of Metal Assembly in Dendrimers

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复旦学报（自然科学版） 2007年第5期46卷 737-738页

作者： Kimihisa Yamamoto Department of Chemistry Keio University

1 Results Dendrimers are highly branched organic macromolecules with successive layers or "generations" of branch units surrounding a central *** inorganic hybrid versions have also been produced,by trapping metal ions or metal clusters within the voids of the *** unusual,tree-like topology endows these nanometre-sized macromolecules with a gradient in branch density from the interior to the exterior,which can be exploited to direct the transfer of charge and energy from the dendri...

关键词： dendrimer metal assembly nano-materials metal clusters

Organic-inorganic Polymer nano-hybrids Based on Sol-gel Reaction

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复旦学报（自然科学版） 2007年第5期46卷 556-页

作者： Yoshiki Chujo Department of Polymer Chemistry Kyoto University

1 Results nano-ordered composite materials consisting of organic polymers and inorganic materials have been attracting attention for the purpose of the creation of high-performance or high-functional polymeric materials. Especially,the word of "polymer hybrid" claims the blends of organic and inorganic components at nano-level dispersion. By using this idea,an enhancement of mechanical strength of organic polymers with silica particles is *** transparency of this material is another important ...

关键词： polymer hybrids nano-materials sol-gel reaction

Effect of PVP, PVA and POLE surfactants on the size of iridium nanoparticles

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Open Journal of Inorganic Chemistry 2012年第3期2卷 67-73页

作者： Anjali Goel Neetu Rani Department of Chemistry Kanya Gurukul Mahavidyalaya Gurukul Kangri University Hardwar (U.K) India

Commonly transition metal nano particle are synthesized by physical, chemical or electrochemical methods. In the present work colloidal iridium nanoparticles were synthesized by chemical oxidation method with different surfactants like poly vinyl pyrrolidone (PVP), poly vinyl alcohol (PVA) and poly oxyethylene lauryl ether (POLE). It was found that shape and size of Ir-nano particles resulted were related to kind of capping agent (surfactant) used. The characterization of the synthesized nano particle has been carried out by UV-vis, X-ray diffraction (XRD), FT-IR, scanning electron microscopy (SEM) and transmission electron microscopic (TEM) techniques. UV-vis and FT-IR confirm the oxidation of IrCl3 into IrO2 while XRD confirms the amorphous nature of the iridium nanoparticles synthesized. The morphology and size of the particle were confirmed by TEM. The average particle size determined by Scherrer equation was about 4.12 nm to 4.23 nm with PVP, 2.74 to 3.36 nm with PVA and 20.41 to 42.25 nm with POLE. Poly oxyethylene lauryl ether particles were not further analyzed because of their large size and less stability. Further particle size was confirmed with TEM, which was 4.5 nm with PVP and 7.0 nm with PVA. The particles are spherical with no agglomeration tendency.

关键词： nano-materials Surfactant Agglomeration PVP PVA POLE

Experimental Research on Toluene Degradation in Plasma as the Driving Force of nanomaterials

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Open Journal of Applied Sciences 2015年第10期5卷 586-594页

作者： Tao Zhu Xiaoyang Li Wenjuan Zhao Ni Xia Xiaojia Wang School of Chemical & Environmental Engineering China University of Mining & Technology Beijing China

Plasma technology has some shortcomings, such as higher energy consumption and byproducts produced in the reaction process. However non-thermal plasma associated with catalyst can resolve these problems. So this kind of technology was paid more and more attention to treat waste gas. In this paper, we make use of this technology to decompose toluene under different electric field and packed materials. At the same time, the mechanism of toluene decomposition using plasma and catalyst is discussed. The experimental results show toluene decomposition increases with electric field strength increasing and flow velocity and initial concentration decreasing. There are four conditions in plasma: without packed materials (1);with packed materials (2);with BaTiO3 in the surfaces of packed materials (3);and with nanometer Ba0.8Sr0.2Zr0.1Ti0.9O3 (4). Toluene decomposition represents a obvious trend, that is, η(4) > η(3) > η(2) > η(1). The best decomposition efficiency of toluene arrives at 95%.

关键词： Non-Thermal Plasma Toluene Decomposition Efficiency nano-materials