Sonochemical synthesis of magnetic Fe3O4/graphene nanocomposites for label-free electrochemical biosensors

Suhanto, R. N.; Harimurti, Suksmandhira; Septiani, Ni Luh Wulan; Utari, Listya; Anshori, Isa; Wasisto, Hutomo Suryo; Suzuki, Hiroaki; Suyatman,; Yuliarto, Brian

doi:10.1007/s10854-020-04102-2

Cited by 21 publications

(9 citation statements)

References 58 publications

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“…The Fe3O4 nanoparticle has been used widely as active material in many types of the sensor due to their active and high surface area to volume ratio [7], high electron exchange rate [8], excellent adsorption, and inherent electrical conductivity [9]. Those sensors are electrochemical sensors [7,[9][10][11], magnetic sensors [11][12][13][14], and optical sensors, such as surface plasmon resonance (SPR) based sensor [15][16][17]. The SPR-based sensor is commonly regarded as Otto and Kretschmann configuration.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of Fe₃O₄/Chitosan and Its Applications for Signal Amplifier in Surface Plasmon Resonance Sensor

Indrayana¹,

Tuny²,

Putra³

et al. 2021

Advances in Social Science, Education and Humanities Research

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The Fe3O4/chitosan nanocomposite is one of the attractive functional materials. It can be applied as active material in a sensor system for an instant Surface Plasmon Resonance (SPR) based sensor. This research aimed at investigating the optical properties of Fe3O4/chitosan and its effect on the SPR angle. The synthesis of nanoparticles used the coprecipitation method. Encapsulation was carried out at a temperature of 50 o C for about 60 minutes. The samples were characterized for their structural properties and phase composition by using X-ray diffraction (XRD) techniques. Their optical properties were characterized by using the Specular Reflectance UV-Vis Spectroscopy technique. The optical properties, such as absorbance (A), absorption coefficient (α), refractive index (n), extinction coefficient (k), optical gap energy (Eg), and Urbach energy (Eu) are investigated. The measurement of the SPR angle toward the ATR curve was carried out in a range of 30 o -60 o by using the Kretschmann configuration. The results show that encapsulation affects the optical properties of the nanoparticles. The SPR angle of prism/Au/Fe3O4/Air and prism/Au/Fe3O4-Chitosan/Air system is about 50.04 o and 50.93 o , consecutively. Chitosan affects an increase of the SPR signal toward the reflectivity where the SPR angle exists. These results imply a future prospective application of the Fe3O4/Chitosan as a signal amplifier material for the SPR sensor.

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Section: Introductionmentioning

confidence: 99%

Optical Properties of Fe₃O₄/Chitosan and Its Applications for Signal Amplifier in Surface Plasmon Resonance Sensor

Indrayana¹,

Tuny²,

Putra³

et al. 2021

Advances in Social Science, Education and Humanities Research

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“…The activity and large surface area of nanomaterials can improve the rate of electron transfer and even the stability of the sensor. They have thus attracted considerable attention in the domain of electrochemical sensors [ 61 , 62 ]. Suresh et al [ 63 ] coated fullerene–C 60 , polyaniline, and palladium nanoparticles in a layer by layer manner onto a glassy carbon electrode through the drop-in and electrodeposition methods.…”

Section: Biological Application Of Electrochemical Biosensorsmentioning

confidence: 99%

Point-of-care biochemical assays using electrochemical technologies: approaches, applications, and opportunities

et al. 2022

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Against the backdrop of hidden symptoms of diseases and limited medical resources of their investigation, in vitro diagnosis has become a popular mode of real-time healthcare monitoring. Electrochemical biosensors have considerable potential for use in wearable products since they can consistently monitor the physiological information of the patient. This review classifies and briefly compares commonly available electrochemical biosensors and the techniques of detection used. Following this, the authors focus on recent studies and applications of various types of sensors based on a variety of methods to detect common compounds and cancer biomarkers in humans. The primary gaps in research are discussed and strategies for improvement are proposed along the dimensions of hardware and software. The work here provides new guidelines for advanced research on and a wider scope of applications of electrochemical biosensors to in vitro diagnosis. Graphical abstract

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“…These differences are calculated in relative error percentages. Relative error percentages are obtained with Equation (9). The relative error percentages from 10 repeated measurements using CV method are obtained from this equation.…”

Section: Reproducibility and Selectivitymentioning

confidence: 99%

“…For developing non-enzymatic electrochemical biosensors, the sensing materials can be based on carbon materials [6,7], metal oxide-based materials [8,9], noble metals, or other electrocatalytic materials [10][11][12]. Carbon-based materials have been commonly used because of their low cost, good electron transfer kinetics, and biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/AgNP) nanocomposites as non-enzymatic electrochemical biosensors for dopamine detection

et al. 2021

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Dopamine (DA) is an important neurotransmitter in the kidney, cardiovascular system, and central nervous system, which abnormality is associated with many diseases. In this work, we synthesized a functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/ AgNP) nanocomposites as the biosensing material to detect DA. The SEM, EDS, and TEM characterizations indicated the success of the functionalization process with MWCNT as the base material. The values of the linear range, the limit of detection (LOD), and the selectivity of the nanocomposite were all obtained from the Differential Pulse Voltammetry (DPV) measurements. The obtained LOD value was 0.2778 mM in the linear range of 0-8 mM, which is lower than the required concentration value for detecting DA in human urine (0.3-3 mM). The biosensor's high selectivity on DA with the presence of other human-related biofluids was also reported. These results show that f-MWCNT/AgNP nanocomposites are a promising biosensor material for the detection of DA.

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Sonochemical synthesis of magnetic Fe3O4/graphene nanocomposites for label-free electrochemical biosensors

Cited by 21 publications

References 58 publications

Optical Properties of Fe₃O₄/Chitosan and Its Applications for Signal Amplifier in Surface Plasmon Resonance Sensor

Optical Properties of Fe₃O₄/Chitosan and Its Applications for Signal Amplifier in Surface Plasmon Resonance Sensor

Point-of-care biochemical assays using electrochemical technologies: approaches, applications, and opportunities

Functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/AgNP) nanocomposites as non-enzymatic electrochemical biosensors for dopamine detection

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Sonochemical synthesis of magnetic Fe3O4/graphene nanocomposites for label-free electrochemical biosensors

Cited by 21 publications

References 58 publications

Optical Properties of Fe3O4/Chitosan and Its Applications for Signal Amplifier in Surface Plasmon Resonance Sensor

Optical Properties of Fe3O4/Chitosan and Its Applications for Signal Amplifier in Surface Plasmon Resonance Sensor

Point-of-care biochemical assays using electrochemical technologies: approaches, applications, and opportunities

Functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/AgNP) nanocomposites as non-enzymatic electrochemical biosensors for dopamine detection

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Product

Resources

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Optical Properties of Fe₃O₄/Chitosan and Its Applications for Signal Amplifier in Surface Plasmon Resonance Sensor

Optical Properties of Fe₃O₄/Chitosan and Its Applications for Signal Amplifier in Surface Plasmon Resonance Sensor