Facile chemical synthesis of cobalt tungstates nanoparticles as high performance supercapacitor

Adib, Kourosh; Rahimi‐Nasrabadi, Mehdi; Rezvani, Zolfaghar; Pourmortazavi, Seied Mahdi; Ahmadi, Farhad; Naderi, Hamid Reza; Ganjali, Mohammad Reza

doi:10.1007/s10854-016-4329-4

Cited by 93 publications

(29 citation statements)

References 31 publications

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“…9 shows the Nyquist impedance plots (imaginary part, Z 0 , versus real part, Z 00 ) over the frequency range of 0.01e10 5 Hz, for the Si wafer, PS, Pd/PS and GO-Pd/PS electrodes in 3.0 M H 2 SO 4 solutions. The measured impedance spectra of the electrodes were fitted using the complex nonlinear least square (CNLS) fitting method [29,30]. The inset in Fig.…”

Section: Impedance Spectroscopymentioning

confidence: 99%

Electrochemical hydrogen storage in Pd-coated porous silicon/graphene oxide

Honarpazhouh

Astaraei

Naderi

et al. 2016

International Journal of Hydrogen Energy

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Section: Impedance Spectroscopymentioning

confidence: 99%

Electrochemical hydrogen storage in Pd-coated porous silicon/graphene oxide

Honarpazhouh

Astaraei

Naderi

et al. 2016

International Journal of Hydrogen Energy

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“…As an instance, simultaneous optimization techniques are used for planning experiments in terms of predetermined arrays, the results of which are used to determine the optimum conditions through building a response surface or by retention mapping . Using such approaches, the number experiments required, which dramatically increases upon increasing the number of variables, can be lowered effectually .…”

Section: Resultsmentioning

confidence: 99%

“…Considering this column, and the SEM images of samples illustrated in Figure , it can be proved that the thickness of Tb 2 (MoO 4 ) 3 plates is a function of the operating conditions. The average thickness of Tb(III) molybdate plates correspond to the effect of each parameter under any level was computed as illustrated and the results are shown in Figure . The curves presented in this figure reveal how the level of the parameters effect on the thickness of Tb 2 (MoO 4 ) 3 plates.…”

Section: Resultsmentioning

confidence: 99%

Optimizing the synthesis of terbium(III) molybdate nanoplates through an orthogonal array design

Pourmortazavi

Rahimi‐Nasrabadi

Aghazadeh

et al. 2018

Env Prog and Sustain Energy

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The study focuses on the application of orthogonal array design for optimizing of the experimental parameters influencing the synthesis of terbium(III) molybdate nano‐plates through the direct precipitation method (DPM). The method conditions, included the concentrations of the cation and anion solutions (Cx and Cy), flow rate of adding the cation solution to that of the anion (Fx), and reactor temperature (Tz), were optimized in terms of the thickness of the produced nanoplates. Performing the analysis of variance (ANOVA) on the results revealed that the synthesis procedure can be optimized through using proper concentrations of the solutions (0.005 and 0.01 mol/L one‐to‐one for Tb(III) and MoO42−) as well as the reactor temperature (0 °C). The morphology and purity of the optimal product were also evaluated through X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and fourier transform infrared spectroscopy (FT‐IR) spectroscopy. The results displayed that the thickness of the deposited terbium(III) molybdate nano‐plates is about 26 nm. The optimal product was also tested and found to be an efficient catalyst in the UV‐induced degradation of methyl orange (MO) by degrading about 97% MO after 80 min. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13091, 2019 Highlights Terbium(III) molybdate nanoplates were fabricated via chemical precipitation route. Nanomaterial was synthesized without any surfactant, template, or catalyst. Synthesis process was optimized by Taguchi design to prepare nanoplates. Product nanoplate were characterized by TEM, XRD, FT‐IR, and DRS. Nanoplates were examined as photocatalyst to degrade organic pollution in water.

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“…Recently, metal tungstates have paid much more interest owing to their potential applications in scintillation detectors, optical fibres, laser host material, photoelectrolysis, supercapacitors, photocatalyst . Particularly, cerium basedtungstates (Ce 2 W x O x ) has widely investigated as a luminescent material because of its electron transitions within the 4 f shell and low‐cost material when compared with other rare earth elements .…”

Section: Introductionmentioning

confidence: 99%

A Novel Cerium Tungstate Nanosheets Modified Electrode for the Effective Electrochemical Detection of Carcinogenic Nitrite Ions

Kumar¹,

Karthik

Chen

et al. 2017

Electroanalysis

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In this present scenario, for the first time, we propose a facile and simple wet chemical approach for the fabrication of two‐dimensional (2D) cerium tungstate (CeW2O9;CeW) nanosheets and evaluated as an electrochemical sensor for the detection of nitrite ions. The successful formation of CeW2O9 nanosheets was confirmed by various physicochemical techniques such as X‐ray diffraction, Fourier transform infrared spectroscopy, Raman, Scanning electron microscope, Transmission electron microscope and Energy dispersive X‐ray studies. The electrochemical properties of the CeW nanosheets were studied by using cyclic voltammograms (CV) and chronoamperometric techniques. As an electrochemical sensor, the CeW nanosheets modified glassy carbon electrode (GCE) showed superior electrocatalytic activity in the oxidation of nitrite in terms of higher anodic peak current and lower oxidation potential when compared with unmodified GCE. CeW nanosheets based electrochemical sensor has been fabricated which detect nitrite in wide linear response range, good sensitivity and very low detection limit of 0.02–986 μM, 2.85 μA μM−1 cm−2 and 8 nM, respectively. Moreover, the CeW nanosheets modified GCE exhibited excellent selectivity even in the presence of common metal ions and biologically co‐interfering compounds. For the practical viability of the prepared amperometric sensor has been utilized in various water samples such as tap, lake and drinking water and the obtained recoveries are appreciable.

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Facile chemical synthesis of cobalt tungstates nanoparticles as high performance supercapacitor

Cited by 93 publications

References 31 publications

Electrochemical hydrogen storage in Pd-coated porous silicon/graphene oxide

Electrochemical hydrogen storage in Pd-coated porous silicon/graphene oxide

Optimizing the synthesis of terbium(III) molybdate nanoplates through an orthogonal array design

A Novel Cerium Tungstate Nanosheets Modified Electrode for the Effective Electrochemical Detection of Carcinogenic Nitrite Ions

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