Sonochemically recovered silver oxide nanoparticles from the wastewater of photo film processing units as an electrode material for supercapacitor and sensing of 2, 4, 6-trichlorophenol in agricultural soil samples

Elaiyappillai, Elanthamilan; Kogularasu, Sakthivel; Chen, Shen‐Ming; Akilarasan, Muthumariappan; Joshua, Christy Ezhilarasi; Johnson, Princy Merlin; Ali, M. Ajmal; Al-Hemaid, Fahad M.A.; Elshikh, Mohamed S.

doi:10.1016/j.ultsonch.2018.09.029

Cited by 50 publications

(22 citation statements)

References 46 publications

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“…The peaks in the XRD pattern of Ag oxide sputter deposited on FTO (Figure b), located at 26.5°, 32.5°, 33.8, 38.1°, and 64.56° corresponds to Miller indices of (110), (111), (003), (200), and (220), respectively, matching with the cubic phase of Ag 2 O (JCPDS card number 76-1393). − The peak at 44.3° matches with (132) crystal planes of AgO. Peak at 33.8° also matches with (202) crystal planes of AgO phase.…”

Section: Resultsmentioning

confidence: 99%

Hybrid Nanostructure of Sputter Decorated Nanodots of Ag₂O/AgO over Flower-like Mn–Co–Cu Ternary Metal Oxide for Electrocatalytic Oxygen Evolution Reaction

Raghav

Deepak

Roy

et al. 2023

ACS Appl. Energy Mater.

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Hybrid nanostructures of quaternary-composite metal oxide catalyst consisting of silver oxide nanodots over flower-like nanostructures of ternary metal oxide (MnCoCuO x ) were synthesized by a hydrothermal method, followed by DC magnetron sputtering. Multimetal ions in spinel structures are efficient OER catalysts as they have large number of active sites, enhancing the electron transfer process. The sputter decorated silver oxide nanodots enhances the electrochemically active surface area (ECSA) of the electrode, which further enhances the OER performance. X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), X-ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared Spectroscopy (FTIR), and Raman spectroscopy were used to validate the structure and composition of synthesized material. Oxygen evolution reaction (OER) activities of the synthesized catalysts were investigated by conducting linear scan voltammetry (LSV) at sweeping rate of 5 mV/s, electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and galvanostatic charge−discharge (GCD). Quaternary-composite metal oxide catalysts were synthesized at various plasma powers, keeping other sputtering parameters fix. Silver oxide nanodots sputter decorated at 45 W over MnCoCuO x, showed the best catalytic properties for OER, having an overpotential of 83 mV via anodic scan and 110 mV via cathodic scan, Tafel slope of 65 mVdec −1 , ECSA of 826 cm 2 , mass activity of 143.7 A g −1 , and a turn over frequency (TOF) of 0.039 s −1 . The symmetric device fabricated using the best performing electrode as cathode and anode displayed efficient water splitting activity, achieving a current density of 10 mA/cm 2 at 1.37 V vs RHE, which is close to thermodynamic value of 1.23 V.

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Section: Resultsmentioning

confidence: 99%

Hybrid Nanostructure of Sputter Decorated Nanodots of Ag₂O/AgO over Flower-like Mn–Co–Cu Ternary Metal Oxide for Electrocatalytic Oxygen Evolution Reaction

Raghav

Deepak

Roy

et al. 2023

ACS Appl. Energy Mater.

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“…The mass of the active material (ZrW 2 O 8 NPs) was found to be 2 mg. The C sp values were calculated using Equations () and () for CV and GCD measurement respectively 30,31 . Also, the Electrochemical Impendence Spectroscopic analysis (EIS) of the as‐fabricated electrode was recorded in the frequency of 0.1 to 100 kHz at 10 mV AC.

{normalC}_{sp} = \frac{\int idv}{S . ∆ v . m}

{normalC}_{sp} = \frac{I . ∆ t}{m . ∆ v}

where,

\int idV

, S, ∆ V , I , m , and ∆ t denote the integral area of one complete CV cycle, scan rate (mVs −1 ), potential window (V), discharge current (A), mass of the active material (mg), discharge time (s) respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The C sp values were calculated using Equations ( 1) and ( 2) for CV and GCD measurement respectively. 30,31 Also, the Electrochemical Impendence Spectroscopic analysis (EIS) of the asfabricated electrode was recorded in the frequency of 0.1 to 100 kHz at 10 mV AC.…”

Section: Electrode Fabrication and Electrochemical Measurementsmentioning

confidence: 99%

Facile synthesis of platelet‐like zirconium tungstate nanostructures for high‐performance supercapacitors

Elaiyappillai

Rajkumar

Wang

et al. 2022

Intl J of Energy Research

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Increasing demand for electronic devices has sparked quantum of research work on energy storage systems. In the present work, we report the facile synthesis of platelet-like Zirconium tungstate (ZrW 2 O 8 NPs) binary metal oxide via co-precipitation method. The ZrW 2 O 8 NPs was confirmed by several physicochemical techniques. Furthermore, FESEM images proved the platelet-like morphology of ZrW 2 O 8 NPs. The as-prepared ZrW 2 O 8 NPs was used as electrode material in the fabrication of supercapacitors. ZrW 2 O 8 NPs @ Ni foil shows the specific capacitance (C sp ) maximum of 508 F g À1 at 5 mV/s and showed 91.3% of cyclic stability after 4000 GCD cycles. As a result, ZrW 2 O 8 NPs was utilized as an anode electrode material to construct an asymmetric device, ZrW 2 O 8 NPs jj Activated carbon (AC). The as-fabricated device showed the energy density of 9.65 Wh kg À1 related to the power density of 299.48 W kg À1 . The effective supercapacitive behavior might be due to the unique morphological features, occurrence of multiple redox sites, and enhanced electrical conductivity of ZrW 2 O 8 NPs. Thus, all these findings account for the applicability of ZrW 2 O 8 NPs as electrode material in highperformance supercapacitors.

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“…In general, the Nyquist plot is used to determine the important resistance phenomena such as solution resistance (R s ), charge transfer resistance (R ct ), and the equivalent series resistance (ESR) of the electrodes. 32,53 The intercept of the high-frequency semi-circle in the X-axis refers to R s , and the diameter of the circle in the highfrequency region refers to R ct . 43 The ESR value can be measured by combining the values of R s and R ct .…”

Section: Supercapacitor Measurement In Three-electrode Systemmentioning

confidence: 99%

A simple conversion of expired medicines into nontoxic activated carbon for energy storage applications

Elaiyappillai

Arumugam

Radha

et al. 2021

Intl J of Energy Research

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In this work, a simple, nontoxic, and eco-friendly method for recycling organic-based expired medicines into activated carbon was proposed. The formation, structural, and morphological features of the sample were proved by different physico-chemical tools such as Fourier transform infrared, Raman, X-ray diffraction, Brunauer-Emmett-Teller, thermogravimetric analysis, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and transmission electron microscopy analysis. Further, expired medicine-derived activated carbon (Em AC) was used as electrode material for supercapacitor devices, and its biocompatibility was studied. The cyclic voltammetry and galvanostatic charge-discharge measurement electrochemical impedance spectroscopic analysis were used to investigate the electrochemical properties of the fabricated Em AC@Ni foil electrode. The as-fabricated electrode delivered specific capacitance (C sp ) value of 480 F/g at the current density of 1 A/g. Also, the electrode exhibited superior cyclic stability and maintained 88% of its capacitance value upto the completion of 8000 GCD cycles at the current density of 2 A/g. Further, Em AC-based symmetric device achieved the energy density of 28.33 Wh kg À1 at the power density of 666.01 W kg À1 . Hence, the porous Em AC sample was identified as the promising electrode material for future energy storage devices without distracting any damage to the biological system.

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Sonochemically recovered silver oxide nanoparticles from the wastewater of photo film processing units as an electrode material for supercapacitor and sensing of 2, 4, 6-trichlorophenol in agricultural soil samples

Cited by 50 publications

References 46 publications

Hybrid Nanostructure of Sputter Decorated Nanodots of Ag₂O/AgO over Flower-like Mn–Co–Cu Ternary Metal Oxide for Electrocatalytic Oxygen Evolution Reaction

Hybrid Nanostructure of Sputter Decorated Nanodots of Ag₂O/AgO over Flower-like Mn–Co–Cu Ternary Metal Oxide for Electrocatalytic Oxygen Evolution Reaction

Facile synthesis of platelet‐like zirconium tungstate nanostructures for high‐performance supercapacitors

A simple conversion of expired medicines into nontoxic activated carbon for energy storage applications

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Sonochemically recovered silver oxide nanoparticles from the wastewater of photo film processing units as an electrode material for supercapacitor and sensing of 2, 4, 6-trichlorophenol in agricultural soil samples

Cited by 50 publications

References 46 publications

Hybrid Nanostructure of Sputter Decorated Nanodots of Ag2O/AgO over Flower-like Mn–Co–Cu Ternary Metal Oxide for Electrocatalytic Oxygen Evolution Reaction

Hybrid Nanostructure of Sputter Decorated Nanodots of Ag2O/AgO over Flower-like Mn–Co–Cu Ternary Metal Oxide for Electrocatalytic Oxygen Evolution Reaction

Facile synthesis of platelet‐like zirconium tungstate nanostructures for high‐performance supercapacitors

A simple conversion of expired medicines into nontoxic activated carbon for energy storage applications

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Product

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Hybrid Nanostructure of Sputter Decorated Nanodots of Ag₂O/AgO over Flower-like Mn–Co–Cu Ternary Metal Oxide for Electrocatalytic Oxygen Evolution Reaction

Hybrid Nanostructure of Sputter Decorated Nanodots of Ag₂O/AgO over Flower-like Mn–Co–Cu Ternary Metal Oxide for Electrocatalytic Oxygen Evolution Reaction