Effect of process parameters on combined EDTA–citrate synthesis of Ba0.5Sr0.5Co0.8Fe0.2O3−δ perovskite

Patra, H.; Rout, S. K.; Pratihar, Swadesh K.; Bhattacharya, Sanchari

doi:10.1016/j.powtec.2011.02.015

Cited by 73 publications

(52 citation statements)

References 45 publications

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“…The TG of the precursor has three mass-loss steps. In the first step the decomposition occurs between 60 ºC and 130 ºC associated with a weight loss of 2.5 % due to the elimination of residual water and ammonia from the gel 18 . There is also another abrupt weight loss (30 %) in the temperature range 250 -460 ºC, attributed to the decomposition of the chelates and formation of the organometallic complexes.…”

Section: Diffuse Reflectance Spectroscopy (Drs)mentioning

confidence: 99%

Synthesis and Characterization of Cerium Molybdate Semiconductor Nanoparticles

et al. 2017

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Cerium molybdate semiconductive nanoparticles were synthesized by the EDTA-citrate combined complexation method. Gel thermal degradation behavior, phase formation, morphology, composition and band gap of cerium molybdate powders were characterized by TG/DSC, XRD, SEM/EDS and DRS analysis, respectively. The nanoparticles were synthesized by fixing the pH of the reaction medium to 9, producing an organometallic gel which was heated to 230 ºC obtaining a precursor powder. The precursors were calcined in a temperature range of 450 -800 ºC for 3 h. The cerium molybdate powders were characterized and the phase evolution, morphology and band gap changes with the increase of calcining temperature were investigated. It was observed that the calcining temperature directly influences the formation of the crystalline structure, appearance of other phases in the materials and the particle size.

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Section: Diffuse Reflectance Spectroscopy (Drs)mentioning

confidence: 99%

Synthesis and Characterization of Cerium Molybdate Semiconductor Nanoparticles

et al. 2017

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“…Of the two routes, the one with EDTA and CA was deemed most promising, due to the suspected toxicity of DTPA. There are several modified Pechini syntheses of perovskites reported in the literature in which EDTA and CA are used in combination, and many of them involve basic cations, such as Sr, Ba and La (Ding et al 2008;Patra et al 2011). The application of these two complexing agents in combination is clearly favorable, but the actual mechanism is not understood.…”

Section: Phosphorsmentioning

confidence: 99%

Modified Pechini Synthesis of Oxide Powders and Thin Films

Sunde

Grande

Einarsrud

2016

Handbook of Sol-Gel Science and Technology

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The modified Pechini method has become one of the most popular synthesis methods for complex oxide materials due to its simplicity and versatility. The method can be applied to synthesize nano-crystalline powders, bulk materials as well as oxide thin films. Here, we present a comprehensive review of the method with focus on the chemistry through the three stages of the process; preparation of stable aqueous solution, poly-esterification to form a solid polymeric resin and finally decomposition/combustion of the resin to form an amorphous oxide followed by crystallization of the desired oxide phase. The review include

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“…There are several sol-gel syntheses of perovskites reported in the literature in which EDTA and CA are used in combination, and many of them involve basic cations, such as Sr, Ba and La [38][39][40][41][42][43]. The interaction of EDTA and CA is clearly favourable for the formation of metal-organic precursor gels for these perovskite materials, although the mechanism is not completely understood.…”

Section: Discussionmentioning

confidence: 99%

Luminescent Eu3+-doped NaLa(WO4)(MoO4) and Ba2CaMoO6 prepared by the modified Pechini method

Sletnes

Skjærvø

Lindgren

et al. 2015

J Sol-Gel Sci Technol

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Modified Pechini synthesis routes were developed for synthesis of the novel red phosphor materials NaLa(WO4)(MoO4):Eu 3+ and Ba2CaMoO6:Eu 3+ . Phase pure NaLa(WO4)(MoO4):Eu 3+ was obtained at calcination temperatures ≥ 600 °C using malic acid or tartaric acid as complexing agents. Phase pure Ba2CaMoO6:Eu 3+ was attained using EDTA and citric acid, at calcination temperatures ≥ 800 °C. Choice of complexing agents were discussed on the basis of the solubility of the precursors, metal complex stability constants and conformations of the complexes. The powder properties were characterised using X-ray diffraction, thermal analysis and electron microscopy. Photoluminescence emission intensity was studied as a function of the complexing agents used and calcination temperature of the powders. Maximum emission intensity for NaLa(WO4)(MoO4):Eu 3+ was obtained at a calcination temperature of 600 °C, whereas the maximum for Ba2CaMoO6:Eu 3+ was obtained after calcination at 1100 °C. Both materials displayed desirable optical properties for use as phosphors in white light emitting diodes.

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Effect of process parameters on combined EDTA–citrate synthesis of Ba0.5Sr0.5Co0.8Fe0.2O3−δ perovskite

Cited by 73 publications

References 45 publications

Synthesis and Characterization of Cerium Molybdate Semiconductor Nanoparticles

Synthesis and Characterization of Cerium Molybdate Semiconductor Nanoparticles

Modified Pechini Synthesis of Oxide Powders and Thin Films

Luminescent Eu3+-doped NaLa(WO4)(MoO4) and Ba2CaMoO6 prepared by the modified Pechini method

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