Bulk synthesis of nanocrystalline urania powders by citrate gel-combustion method

Kumar, Dinesh; Ananthasivan, K.; Krishnan, R.; Amirthapandian, S.; Dasgupta, Arup

doi:10.1016/j.jnucmat.2015.10.054

Cited by 19 publications

(2 citation statements)

References 63 publications

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“…The important gas release during combustion can explain that a brittle material was obtained with this distinctive morphology. Therefore, based on the characterization results, it can be concluded that this powder is consistent with the literaturereported properties of combustion-synthesized actinide oxide powders 24,36 . Indeed, powders of uranium oxide obtained by solution combustion synthesis have been extensively studied in the scientific literature.…”

Section: Resultssupporting

confidence: 88%

“…Indeed, powders of uranium oxide obtained by solution combustion synthesis have been extensively studied in the scientific literature. Based on scanning electron microscopy images found in the literature, the morphology of powders resulting from solution combustion synthesis of uranium oxide can be described as highly porous and irregularly shaped 36 . They reveal the presence of numerous spherical and irregularly shaped particles with rough surfaces and varying sizes ranging from a few microns to tens of microns.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis of plutonium dioxide by citric acid-assisted solution combustion synthesis

Hautecouverture,

Estevenon,

Rey

et al. 2023

Journal of Nuclear Materials

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Synthesis of plutonium dioxide by citric acid-assisted solution combustion synthesis

Hautecouverture,

Estevenon,

Rey

et al. 2023

Journal of Nuclear Materials

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Nanocrystalline Manganese Iron Oxide as a Charge Storage Electrode

Soni

Pal

2016

Electroanalysis

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Energy is one of the main issues in this century. The demand of energy for usage of modern electronic accessories has attracted lot of attention towards energy storage devices such as batteries and supercapacitors. Supercapacitors have the greater potential for providing good cyclability, high power density and energy density as compared with the batteries [1][2][3]. The synthesis of advanced electrode materials for charge storage is the key issue in the development of supercapacitors. It has been found that pseudocapacitors are more efficient than electric double layer capacitors (EDLCs) and exhibit 10 times more capacitance-per-unit surface area for a given electrode material [4]. The energy density and power density of pseudocapacitors are usually several times larger than those of EDLCs [5]. RuO 2 was the first candidate that was employed as a pseudocapacitor which exhibited a capacitance of about 700 F g À1 , however showed limited application due to its scarcity and high cost [6]. Recently, the approach of combining battery electrode materials and electrochemical supercapacitors known as hybrid electrochemical supercapacitors (HESC) is being studied. They have been studied both in aqueous and non-aqueous electrolytes. Advantage of non-aqueous medium being a wide operating potential window (upto~4 V) as compared to aqueous (~1 V) [7]. [43] have been studied for supercapacitor and HESC. Different methodologies for synthesizing binary oxide of distinct morphologies have been reported [33][34][35][36][37][38][39][40][41][42][43]. Morphology affects the chemical, physical and electrochemical properties of the material. Solution combustion synthesis has the advantage of producing fine and homogeneous powder of high purity in a single step self propagating process at low temperature with high exothermicity [44][45][46][47]. Citric acid is used as fuel as it is inexpensive and is a more effective complexing agent. It is often accompanied with the addition of certain amounts of NH 4 OH which help to overcome drying stresses and contribute to the porosity and strength of the solÀgel network [44]. In this present study manganese iron oxide Abstract: Phase pure nanocrystalline manganese iron oxide [(Mn 0.37 Fe 0.63 ) 2 O 3 ] was synthesized by combustion technique based on propellant chemistry principle employing citric acid as fuel. The synthesized powder was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), BET, BJH analysis and electrochemical studies for possible application as a charge storage electrode. The average crystallite size was found to be 18.6 nm from XRD analysis. BET analysis yielded the surface area and specific pore volume of the powder to be 22.96 m 2 g À1 and 0.0098 cm 3 g À1 respectively. The specific capacitance from cyclic voltammetric studies at scan rate 5 mV s À1 was found to be about 30 F g À1 cm À2 while from charge discharge studies was found to be 27 AE 1 Fg À1 cm À2. In addition, the material showed appreciable stability during charge-discharge cycling.

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Evaluation of long chain monoamide extractants for the reprocessing of U–Pu–Zr metallic fuel solution

Prathibha

Selvan

Venkatesan

2019

J Radioanal Nucl Chem

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Bulk synthesis of nanocrystalline urania powders by citrate gel-combustion method

Cited by 19 publications

References 63 publications

Synthesis of plutonium dioxide by citric acid-assisted solution combustion synthesis

Synthesis of plutonium dioxide by citric acid-assisted solution combustion synthesis

Nanocrystalline Manganese Iron Oxide as a Charge Storage Electrode

Evaluation of long chain monoamide extractants for the reprocessing of U–Pu–Zr metallic fuel solution

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