Synthesis of a silver nanoparticle ink for fabrication of reference electrodes

Oliveira, Ana Elisa Ferreira; Pereira, Arnaldo César; Resende, Mayra Asevedo Campos de; Ferreira, Lucas Franco

doi:10.1016/j.talo.2022.100085

Cited by 18 publications

(12 citation statements)

References 57 publications

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“…Figure b(I) shows the XRD pattern of carbon black (CB) and ethyl cellulose (EC) on silver conductive ink coated on the paper substrate. It exhibits four main characteristic peaks associated with a silver cubic (FCC) crystal structure at 2θ angles of 28.2, 44.3, 64.5, and 77.5° corresponding to the (111), (200), (220), and (311) planes . The broad diffraction 2θ region (∼5–28°) can be attributed to the amorphous structures of ethyl cellulose and carbon black.…”

Section: Resultsmentioning

confidence: 99%

Paper Supercapacitor Developed Using a Manganese Dioxide/Carbon Black Composite and a Water Hyacinth Cellulose Nanofiber-Based Bilayer Separator

Beg,

Alcock,

Titus Mavelil

et al. 2023

ACS Appl. Mater. Interfaces

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Flexible and green energy storage devices have a wide range of applications in prospective electronics and connected devices. In this study, a new eco-friendly bilayer separator and primary and secondary paper supercapacitors based on manganese dioxide (MnO2)/carbon black (CB) are developed. The bilayer separator is prepared via a two-step fabrication process involving freeze–thawing and nonsolvent-induced phase separation. The prepared bilayer separator exhibits superior porosity of 46%, wettability of 46.5°, and electrolyte uptake of 194% when compared with a Celgard 2320 trilayer separator (39%, 55.58°, and 110%). Moreover, lower bulk resistance yields a higher ionic conductivity of 0.52 mS cm–1 in comparison to 0.22 mS cm–1 for the Celgard separator. Furthermore, the bilayer separator exhibits improved mean efficiency of 0.44% and higher specific discharge capacitance of 13.53%. The anodic and cathodic electrodes are coated on a paper substrate using MnO2/CB and zinc metal-loaded CB composites. The paper supercapacitor demonstrates a high specific capacitance of 34.1 mF cm–2 and energy and power density of 1.70 μWh cm–2 and 204.8 μW cm–2 at 500 μA, respectively. In summary, the concept of an eco-friendly bilayer cellulose separator with paper-based supercapacitors offers an environmentally friendly alternative to traditional energy storage devices.

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Section: Resultsmentioning

confidence: 99%

Paper Supercapacitor Developed Using a Manganese Dioxide/Carbon Black Composite and a Water Hyacinth Cellulose Nanofiber-Based Bilayer Separator

Beg,

Alcock,

Titus Mavelil

et al. 2023

ACS Appl. Mater. Interfaces

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“…Preparation of Nano-silver printable ink.-The Nano-Ag ink was prepared following the procedure reported by 28 after slight modifications in the technique. Briefly, 1.02 gm of AgNO 3 was dissolved into 60 ml of EG by sonication for 10 min and left on a magnetic stirrer for 10 min; then, the resulting solution was held into a burette (solution A) for the next step.…”

Section: Methodsmentioning

confidence: 99%

Miniaturized Chip Integrated Ecological Sensor for the Quantitation of Milnacipran Hydrochloride in the Presence of Its Impurities in Dosage Form and Human Plasma

Mostafa

Elsonbaty

Attala

et al. 2023

J. Electrochem. Soc.

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Modifications of sensor composition provides a way to achieve the utmost sensitivity and selectivity. Molecular imprinting, together with conducting polymers and graphite derivatives, represents a robust composite that attains better sensor performance. In addition, miniaturization of potentiometric sensors is advantageous to the sensitivity and greenness of the developed sensors due to their smaller portable size, lower sample volume, and lower waste. These advantages provide a fast track toward developing wearable versions of ion-selective sensors, which are valuable in point-of-care services in different clinical settings. Here, we report on the first recyclable on-chip miniaturized potentiometric sensors integrated by a printed Ag/AgCl quasi-reference electrode for the quantitation of milnacipran hydrochloride (MLN) in its dosage form and human plasma in the presence of its impurities. The sensing module of the sensor is modified by a molecularly imprinted conducting polymer (polyaniline), which is computationally optimized to achieve maximum selectivity towards MLN in the presence of its impurities. Moreover, the designated sensor composition is optimized by a self-validated ensemble modeling experimental design seeking the composition leading to optimal sensor performance. The proposed on-chip sensor successfully achieved a LOD value of (7.94 x 10-7 M) with a green analytical profile.

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“…It is revealed from the matched JCPDS data that the phase of the formed TiO 2 is anatase with a tetragonal 17,18 crystal system. The crystal structures of Fe 3 O 4 and Ag are found to be inverse cubic spinel 19 and cubic, 20 respectively. The dominance of Ag peaks indicates the rich crystalline properties and rich availability of Ag particles on the composite's surface, which also reveals that Ag is not occupied in the lattices of TiO 2 as silver ions.…”

Section: Structural Investigationsmentioning

confidence: 97%

Insights into the Photocatalytic Memory Effect of Magneto-Plasmonic Ag–Fe₃O₄@TiO₂ Ternary Nanocomposites for Dye Degradation and H₂ Production under Light and Dark Conditions

et al. 2022

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This study explores the preparation of Ag plasmons-sensitized magnetic-Fe 3 O 4 integrated TiO 2 (Ag−Fe 3 O 4 @TiO 2 ) ternary nanocomposites and their defectinduced electron storage properties to exploit their photocatalytic memory effect toward dye degradation and H 2 generation under light and dark conditions. The crystalline phase formation and elemental states of the individual materials and elements in the nanocomposite are analyzed using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. The existence of Ti and Fe ions with dual oxidation states of Ti 4+/3+ and Fe 3+/2+ , respectively, is observed by XPS, which revealed the presence of defects in the system. The observed red shift along with a distinct plasmonic band (corresponding to metallic Ag nanoparticles) in the UV−visible absorption spectrum and the observed modified radiative recombination emission in the PL spectrum confirmed the plasmon-driven visible light activity along with the improved carrier separation and transfer characteristics in the synthesized ternary composite. Accordingly, the Ag− Fe 3 O 4 @TiO 2 photocatalyst degraded almost 100% of MB (methylene blue) and RhB (rhodamine B) dyes under simulated solar light in 90 min, while it is found to be around 42% and 36% in 60 min under dark conditions, respectively (which is preirradiated for 60 min). Further, it produced H 2 at the rate of 911 μmol g −1 h −1 under light conditions and is decreased to ∼96 μmol g −1 h −1 under dark conditions which is preirradiated for 1 h. However, when the composite is preirradiated for 3 h, it showed a maximum H 2 evolution of 144 μmol g −1 h −1 under dark. Further, the photocurrent and electrochemical impedance under light and dark conditions suggested the mechanism of photocatalytic charge storage and transfer process in the composite. Although the photocatalytic memory effect of the composite is meager toward H 2 production due to the insufficient potential of the stored−released electrons to reduce the protons (2H + ) to H 2 under dark conditions, their degradation efficiency is considerably good.

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Synthesis of a silver nanoparticle ink for fabrication of reference electrodes

Cited by 18 publications

References 57 publications

Paper Supercapacitor Developed Using a Manganese Dioxide/Carbon Black Composite and a Water Hyacinth Cellulose Nanofiber-Based Bilayer Separator

Paper Supercapacitor Developed Using a Manganese Dioxide/Carbon Black Composite and a Water Hyacinth Cellulose Nanofiber-Based Bilayer Separator

Miniaturized Chip Integrated Ecological Sensor for the Quantitation of Milnacipran Hydrochloride in the Presence of Its Impurities in Dosage Form and Human Plasma

Insights into the Photocatalytic Memory Effect of Magneto-Plasmonic Ag–Fe₃O₄@TiO₂ Ternary Nanocomposites for Dye Degradation and H₂ Production under Light and Dark Conditions

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Synthesis of a silver nanoparticle ink for fabrication of reference electrodes

Cited by 18 publications

References 57 publications

Paper Supercapacitor Developed Using a Manganese Dioxide/Carbon Black Composite and a Water Hyacinth Cellulose Nanofiber-Based Bilayer Separator

Paper Supercapacitor Developed Using a Manganese Dioxide/Carbon Black Composite and a Water Hyacinth Cellulose Nanofiber-Based Bilayer Separator

Miniaturized Chip Integrated Ecological Sensor for the Quantitation of Milnacipran Hydrochloride in the Presence of Its Impurities in Dosage Form and Human Plasma

Insights into the Photocatalytic Memory Effect of Magneto-Plasmonic Ag–Fe3O4@TiO2 Ternary Nanocomposites for Dye Degradation and H2 Production under Light and Dark Conditions

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Product

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About

Insights into the Photocatalytic Memory Effect of Magneto-Plasmonic Ag–Fe₃O₄@TiO₂ Ternary Nanocomposites for Dye Degradation and H₂ Production under Light and Dark Conditions