scholarly journals Peroxidase-like activity of Fe3O4/carbon core-shell nanostructured : effects of carbon shell thickness for application to glucose biosensor

2021 ◽  
Vol 10 (2) ◽  
pp. 109-113
Author(s):  
Nghia Nguyen Duc ◽  
Chinh Huynh Dang ◽  
Hoang Tran Vinh ◽  
Vu Dao Hong
Keyword(s):  
Hydrogen Peroxide ◽  
High Selectivity ◽  
Glucose Biosensor ◽  
Core Shell ◽  
High Catalytic Activity ◽  
Blue Color ◽  
Carbon Coated ◽  
Peroxidase Enzyme ◽  
Enzymatic Biosensor ◽  
Carbon Core

In this study, we present a protocol for synthesis of carbon coated Fe3O4 nanoparticles with core-shell structured nanocomposite (FeC) following a two steps approach. The peroxidase-like acitivity of the synthesized FeC nanocomposite has been evaluated towards replacing of the horseradish peroxidase enzyme (HRP) in hydrogen peroxide enzymatic biosensor. In which, FeC has catalyzed for a redox reaction 5,5'-tetramethylbenzidine (TMB) and H2O2 to produce oxidized state of TMB with as a blue color. Results exhibited that FeC has a high catalytic activity accepting for fabrication of a high selectivity hydrogen peroxide (H2O2) colorimetric sensor with low detection of limit (LoD) of 0.02 mM H2O2. Based on this finding, we have used FeC and combined with glucose oxidase (GOx) enzyme to construct a new colorimetric glucose biosensor with high selectivity. 

Facile Synthesis of α- Fe2O3/Carbon Core-Shell Composite for Lithium Storage and Conversion

2018 ◽  
Vol 386 ◽  
pp. 301-304
Author(s):  
Denis P. Opra ◽  
Sergey V. Gnedenkov ◽  
Sergey L. Sinebryukhov ◽  
Valery G. Kuryavyi ◽  
Grigorii A. Zverev ◽  
...  
Keyword(s):  
Reversible Capacity ◽  
Core Shell ◽  
Facile Synthesis ◽  
Lithium Storage ◽  
Voltage Range ◽  
Structure Morphology ◽  
Carbon Coated ◽  
Carbon Core ◽  
Shell Composite ◽  
High Voltage Discharge

Carbon-coated hematite α-Fe2O3 core-shell structure had been synthesized by a facile method of pulsed high-voltage discharge. The structure, morphology, and phase composition of the material were characterized by SEM, TEM, and XRD methods. When carbon-coated α-Fe2O3 was galvanostatically cycled at 100 mA g–1 in the voltage range of 3.0–0.005 V, it exhibits a reversible capacity of 479 mAh g–1, assuming about three Li+ ions retrieval.

A sensitive hydrogen peroxide and glucose biosensor based on gold/silver core–shell nanorods

2013 ◽  
Vol 108 ◽  
pp. 39-44 ◽  
Author(s):  
Xuejuan Yang ◽  
Yinhu Wang ◽  
Yuwei Liu ◽  
Xiue Jiang
Keyword(s):  
Hydrogen Peroxide ◽  
Glucose Biosensor ◽  
Core Shell ◽  
Gold Silver ◽  
Silver Core

scholarly journals Carbon-coated Fe3O4 core–shell super-paramagnetic nanoparticle-based ferrofluid for heat transfer applications

2021 ◽  
Author(s):  
Mohd Imran ◽  
Nasser Zouli ◽  
Tansir Ahamad ◽  
Saad M. Alshehri ◽  
Mohammed Rehaan Chandan ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Thermal Conductivity ◽  
External Magnetic Field ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Carbon Coated ◽  
Core Shell Nanoparticles ◽  
Fe3o4 Core

Ferrofluids prepared by dispersing superparamagnetic Fe3O4@C core–shell nanoparticles in water exhibited exceptional enhancement in thermal conductivity without an external magnetic field.

scholarly journals Carbon-Coated Core Shell Structured Copper and Nickel Nanoparticles Synthesized in an Ionic Liquid.

ChemInform ◽  
2006 ◽  
Vol 37 (49) ◽  
Author(s):  
Davis S. Jacob ◽  
Isaschar Genish ◽  
Lior Klein ◽  
Aharon Gedanken
Keyword(s):  
Ionic Liquid ◽  
Nickel Nanoparticles ◽  
Core Shell ◽  
Carbon Coated

Carbon-Coated Core Shell Structured Copper and Nickel Nanoparticles Synthesized in an Ionic Liquid

2006 ◽  
Vol 110 (36) ◽  
pp. 17711-17714 ◽  
Author(s):  
David S. Jacob ◽  
Isaschar Genish ◽  
Lior Klein ◽  
Aharon Gedanken
Keyword(s):  
Ionic Liquid ◽  
Nickel Nanoparticles ◽  
Core Shell ◽  
Carbon Coated
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