Nanoparticulates Zr(OH)4 and ZrO2 prepared by low-temperature cathodic electrodeposition

Aghazadeh, Mustafa; Barmi, Abbas-Ali Malek; Hosseinifard, Mojtaba

doi:10.1016/j.matlet.2011.12.118

Cited by 40 publications

(33 citation statements)

References 21 publications

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“…(2) were 313 Fg −1 and 196 Fg −1 at the current density values of 1 Ag −1 and 32 Ag −1 (Figure b). These values exceed those of other works . Also the cerium tungstate electrodes had good cycling stability values based on the data obtained at 2 A g −1 (Figure c shows that the cerium tungstate electrode retained 91.8% of its original SC even after 4000 cycles).…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Supercapacitor Application of Cerium Tungstate Nanostructure

et al. 2019

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Cerium tungstate nanostructure was prepared through precipitation and characterized using field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR), as well as cyclic voltammetry (CV), galvanostatic charge-discharge, electrochemical impedance spectroscopy (EIS) and continuous cyclic voltammetry (CCV) in terms of structural and electrochemical properties. The electrochemical evaluations using cerium tungstate electrodes revealed that the electrode material has interesting supercapacitive properties including a specific capacitance (SC) of 348 F g À 1 at a potential scan rate of 2 mV s À 1 . Also CCV experiments proved that the material maintains 95.8% of its original capacitance after 4000 cycles. The properties make the nanostructures suitable for use as high-quality electroactive materials for supercapacitor applications.

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Section: Resultsmentioning

confidence: 99%

Synthesis and Supercapacitor Application of Cerium Tungstate Nanostructure

et al. 2019

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“…The peak observed at 1640 cm -1 is due to the bending vibrations of water molecules. Generally, the bands below 800 cm -1 are attributed to the metal-oxygen vibrational modes (Aghazadeh et al, 2012;Nyquist and Kagel, 1971). The broad band at 700 cm -1 -850 cm -1 is related to the double oxide Mg 2 Al 2 O 4 on the pre-treated AA2024 (Farmer).…”

Section: Resultsmentioning

confidence: 99%

Influence of pre-treatment on zirconium based conversion coating on AA2024

Zemanová

Lokaj

Karľová

et al. 2017

Acta Chimica Slovaca

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A comparison of the influence of two alloy pre-treatments and temperature treatments on the formation and composition of zirconium based conversion coating on the AA2024 alloy has been performed. The investigation employed mass changes, atomic force microscopy (AFM), XRD dispersive spectroscopy (EDX), infrared spectroscopy (IR) and electrochemical tests by open circuit potential (OCP) measurements. Pre-treatment using only alkaline etching is called alkaline pre-treatment. When alkaline etching is followed by de-oxidization in a phosphoric acid solution the process is called acidic pre-treatment. Conversion coatings were formed in Pragokor BL. IR analysis revealed the formation of a phosphate on the alloy surface. EDX analysis showed Mg dissolution. The Zr content increased with the temperature of the conversion coating formation. Both pre-treatment methods provided a phosphate layer on the alloy surface.

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“…The formation of hydrous CZPs from thermal hydrolysis of ZrOCl 2 can be explained by the chemical reaction equation (1) [7][8][9]. It is worthy to noted that, the conversion rate of hydrous zirconia (ZrO 2 .2H 2 O) from ZrOCl 2 is very fast with the addition of ammonia, and thus only microparticles can be obtained [3].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Monodisperse Hydrous Colloidal Zirconia Nanoparticles

Nguyen

Nguyen²,

Tham

et al. 2020

Comm. in Phys.

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The suspension of hydrous colloidal zirconia particles (CZPs) was prepared from zirconium oxychloride solutions via thermal hydrolysis at acidic condition and at boiling point of 110 ºC for 72 h. Characterization of the obtained suspension and dried solid ZrO2 was performed by DLS, FESEM, FTIR, XRD and TGA measurements. Purification via dialysis membrane can maintain the monodispersion of the colloidal suspension when stabilized at pH6. The suspension contained almost sheet-like colloidal particles with amorphous structure with size ranges from 70 to 140 nm in wide and about 40-60 nm in thickness. The formula of hydrous CZPs can be expressed as ZrO2.2H2O.

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Nanoparticulates Zr(OH)4 and ZrO2 prepared by low-temperature cathodic electrodeposition

Cited by 40 publications

References 21 publications

Synthesis and Supercapacitor Application of Cerium Tungstate Nanostructure

Synthesis and Supercapacitor Application of Cerium Tungstate Nanostructure

Influence of pre-treatment on zirconium based conversion coating on AA2024

Synthesis and Characterization of Monodisperse Hydrous Colloidal Zirconia Nanoparticles

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