Optimised Co-Precipitation synthesis condition for oxalate-derived zirconia nanoparticles

Foo, Yuan Teng; Abdullah, Ahmad Zuhairi; Horri, Bahman Amini; Salamatinia, Babak

doi:10.1016/j.ceramint.2019.07.336

Cited by 20 publications

(9 citation statements)

References 36 publications

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“…The absorbance spectra of these composite films show prominent peaks near 204 nm and 215 nm, which correspond to P -P* electronic transition and unsaturated carbonyl groups (-CO-(CQC)-) with the presence of a significant amount of contaminated polar ethylene groups in pure PVA. 43,44 The existence of foreign carbonyl groups within the pristine PVA has been confirmed earlier by FTIR spectroscopy. It is clearly observable from Fig.…”

Section: Uv-visible Absorbance Spectra and The Effect Of Applying Ext...supporting

confidence: 55%

Tunable, reversible resistive switching behavior of PVA-zirconia nanocomposite films and validation of the trap-assisted switching mechanism by the selective application of external bias voltages

Karmakar

Das

Dutta

et al. 2023

Phys. Chem. Chem. Phys.

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Section: Uv-visible Absorbance Spectra and The Effect Of Applying Ext...supporting

confidence: 55%

Tunable, reversible resistive switching behavior of PVA-zirconia nanocomposite films and validation of the trap-assisted switching mechanism by the selective application of external bias voltages

Karmakar

Das

Dutta

et al. 2023

Phys. Chem. Chem. Phys.

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“…The synthesis of oxides through the precipitation of a metal ion by oxalic acid, followed by the calcination of the insoluble salt produced, is a method widely used in catalysis, electrolyte materials fabrication, etc. − One of the main advantages of this process is the possibility to gain fine control of the physical characteristics of the final oxide through the optimization of the precipitation and thermal treatment conditions. Moreover, the limited number of steps involved leads to an easy implementation at the industrial scale.…”

Section: Introductionmentioning

confidence: 99%

Oxidation as an Early Stage in the Multistep Thermal Decomposition of Uranium(IV) Oxalate into U₃O₈

et al. 2020

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The thermal decomposition of actinides oxalates greatly depends on the oxidation state of the cation, the gas involved and the physical characteristics of the precursor. In the actinides series, uranium(IV) oxalate U(C 2 O 4 ) 2 .6H 2 O can be viewed as a peculiar case, as its sensibility towards oxidation leads to a specific series of reactions when heating under oxygen atmosphere. In order to clarify the disagreements existing in the literature, particularly concerning potential carbonate intermediates and the possible transitory existence of UO 3 , we show here an extended characterization of the different intermediates through a combination of X-Ray diffraction, vibrational spectroscopies and X-Ray absorption near edge spectroscopy.In this frame, uranium oxidation was found to occur at low temperature (200°C) concomitantly to the onset of oxalate groups decomposition, leading to an amorphous oxo-oxalato compound. Pursuing the thermal conversion up to 350°C led to complete oxidation of U(IV) into U(VI), then to the formation of amorphous UO 3 still bearing adsorbed carbonates. The first pure oxide formed during the thermal conversion was further identified to sub-stoichiometric UO 3- after heating at 550°C. Finally, U 3 O 8 was obtained as the final stable phase after heating above 660°C. The mechanism of thermal conversion of uranium(IV) oxalate into oxide under oxygen is then driven by a complex interplay between redox reactions and decomposition of the organic fractions. Such chemical reactions were also found to significantly modify the morphology of the powder through HT-ESEM observations : decomposition led the size of the aggregates to reduce by 20% while uranium oxidation clearly promoted growth within the agglomerates.

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“…The benefits of the coprecipitation method are listed as follows. 46,130,132,133 • Low calcination temperature • Controllable particle size and composition • Simple and rapid preparation • Cost-effectiveness • High phase-purity product • Absence of harmful chemicals, such as alkoxides • Good chemical homogeneity • Minimum agglomeration • Fine-grain size However, this method is time-consuming, not applicable to various types of metal oxides, and has different precipitation rates. 130 Moreover, the co-precipitation approach cannot deliver satisfactory results when the reactants have different solubilities.…”

Section: Co-precipitation Methodsmentioning

confidence: 99%

A review on the preparation of anode materials and anode films for solid oxide fuel cell applications

Hadi

Somalu

Osman

et al. 2021

Intl J of Energy Research

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The primary components of SOFCs are the anode, cathode, and the electrolyte. Anode is critical in achieving the effective electrochemical oxidation of fuel; thus, its performance can be improved using homogenous powder synthesized through an appropriate method. Various synthesis methods, including solidstate reaction and wet chemical methods have been used to synthesize anode materials. However, each technique has several advantages and disadvantages.Given that anode is a porous electrode, few criteria, such as high conductivity, tolerance towards carbon deposition, chemical stability, and thermal stability, must be fulfilled. Researchers also modified the existing synthesis method to improve the performance of the anode. In addition, various anode fabrication techniques including physical and colloidal deposition techniques are briefly discussed to understand their effect on the performance of the deposited layers.The aim of this review is to discuss the various anode synthesis and deposition techniques and their influence on the properties and performance of SOFCs.

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Optimised Co-Precipitation synthesis condition for oxalate-derived zirconia nanoparticles

Cited by 20 publications

References 36 publications

Tunable, reversible resistive switching behavior of PVA-zirconia nanocomposite films and validation of the trap-assisted switching mechanism by the selective application of external bias voltages

Tunable, reversible resistive switching behavior of PVA-zirconia nanocomposite films and validation of the trap-assisted switching mechanism by the selective application of external bias voltages

Oxidation as an Early Stage in the Multistep Thermal Decomposition of Uranium(IV) Oxalate into U₃O₈

A review on the preparation of anode materials and anode films for solid oxide fuel cell applications

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Optimised Co-Precipitation synthesis condition for oxalate-derived zirconia nanoparticles

Cited by 20 publications

References 36 publications

Tunable, reversible resistive switching behavior of PVA-zirconia nanocomposite films and validation of the trap-assisted switching mechanism by the selective application of external bias voltages

Tunable, reversible resistive switching behavior of PVA-zirconia nanocomposite films and validation of the trap-assisted switching mechanism by the selective application of external bias voltages

Oxidation as an Early Stage in the Multistep Thermal Decomposition of Uranium(IV) Oxalate into U3O8

A review on the preparation of anode materials and anode films for solid oxide fuel cell applications

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Oxidation as an Early Stage in the Multistep Thermal Decomposition of Uranium(IV) Oxalate into U₃O₈