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Artículos de revistas sobre el tema "Citratos precursores"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 14 de febrero de 2022

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1

Bernardes, Aline M., Ariadne C. Eduardo, Yagly G. dos S. Gomes, Lidianne D. de Alvarenga, Rosana de F. Gonçalves, and Mario J. Godinho. "Influência do Método de Síntese e do Tratamento Térmico na Fotoluminescência de Nanocompósitos de Céria Dopada com Gadolínio/Zircônia." Revista Processos Químicos 13, no. 26 (2020): 81–88. http://dx.doi.org/10.19142/rpq.v13i26.543.

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Neste trabalho, os nanocompósitos de interesse foram preparados, utilizando-se o Método dos Precursores Poliméricos, por meio do qual se prepararam os citratos de céria dopados com 10, 15 e 20% de gadolínio, e encapsularam-se com 3% em mol de ZrO2, em diferentes temperaturas. Para a caracterização dos materiais obtidos, utilizaram-se as técnicas de Difração de Raios X e Emissão Fotoluminescente. Verifiou-se que a alta concentração do dopante ocasiona tanto a melhoria na emissão, pela adição de defeitos, quanto a diminuição, pelo quenching da emissão. O aumento na temperatura de tratamento térm
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2

Pessoa, R. C., M. C. Nasar, R. S. Nasar, M. C. Rezende, and M. K. Hwang. "Atenuação da radiação incidente em compósito de ferrita de NiZn dopado com magnésio e cobre em epóxi." Cerâmica 59, no. 349 (2013): 59–64. http://dx.doi.org/10.1590/s0366-69132013000100007.

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Foi sintetizada uma ferrita espinélio de NiZnFe2O4 dopada com magnésio e cobre pelo método dos citratos precursores, para pesquisar a influência desses íons na refletividade do pó. Os pós calcinados a 350, 500 e 900 ºC foram caracterizados por difração de raios X, microscopia eletrônica de varredura, magnetômetro de amostra vibrante e refletividade do pó. O pó obtido a 350 ºC é nanométrico e apresentou baixa magnetização e menos de 10% de absorção de radiação. A magnetização e a absorção de radiação aumentaram com o aumento do tamanho de partículas (> 0,4 μm), que causou aumento do volume d
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3

Vargas, R. A., R. Chiba, M. Andreoli та E. S. M. Seo. "Síntese e caracterização de La1-X SrX MnO3±δ e La1-X SrX Co1-Y FeY O3-δ utilizados como catodo em células a combustível de óxido sólido". Cerâmica 54, № 331 (2008): 366–72. http://dx.doi.org/10.1590/s0366-69132008000300016.

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Na síntese de materiais, muitos desafios estão relacionados com propriedades requeridas, levando pesquisadores a buscarem materiais alternativos que possuam características adequadas para funcionarem como componentes nas células a combustível de óxido sólido. Atualmente, os materiais mais estudados como catodos são os óxidos mistos La1-X SrX MnO3±δ e La1-X SrX Co1-Y FeY O3-δ. Neste trabalho utilizaram-se como precursores os nitratos dos respectivos elementos químicos. O objetivo é apresentar algumas características físicas, químicas e microestruturais desses materiais, obtidos pela técnica dos
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4

Rajendran, M., and M. Subba Rao. "Strontium and calcium zirconyl citrates as precursors for the low-temperature synthesis of SrZrO3 and CaZrO3 fine powders." Journal of Materials Research 12, no. 10 (1997): 2665–72. http://dx.doi.org/10.1557/jmr.1997.0356.

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Synthesis and the thermal decomposition behavior of new molecular precursors, strontium, and calcium zirconyl citrates are presented. The pathway to the metazirconate formation has been found to proceed through a multistep process. The precursors yield SrZrO3 and CaZrO3 fine powders at temperatures as low as 650 °C. Physico-chemical, spectroscopic, thermoanalytical, and microscopic techniques have enabled the identification of the sequence of events leading to the perovskite formation and proposition of a thermolysis scheme. Retention of the molecular level mixing of the metal ions during the
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5

Narendar, Yeshwanth, and Gary L. Messing. "Effect of phase separation in metal carboxylate gels on perovskite lead magnesium niobate crystallization." Journal of Materials Research 14, no. 10 (1999): 3921–31. http://dx.doi.org/10.1557/jmr.1999.0531.

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Phase separation during the synthesis and decomposition of lead magnesium niobate (PMN)–ethylenediaminetetraacetic acid (EDTA) and PMN–citrate gels strongly affects perovskite Pb(Mg1/3Nb2/3)O3 phase formation. The PMN–EDTA gel was synthesized from a solution containing Pb–EDTA, Mg–EDTA, and peroxo–citrato–niobium complexes at pH 8. Pb–EDTA precipitation was avoided by using Pb:EDTA in the mole ratio >1:2.5 and flash pyrolyzing the PMN–EDTA solution at 225 °C. Consequently, the PMN yield increased from 80 to 98 wt%. The sequential decomposition of Pb–EDTA, Mg–EDTA, and peroxo–citrato–Nb in t
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6

Devi, P. Sujatha, Yongjae Lee, Joshua Margolis, et al. "Comparison of citrate–nitrate gel combustion and precursor plasma spray processes for the synthesis of yttrium aluminum garnet." Journal of Materials Research 17, no. 11 (2002): 2846–51. http://dx.doi.org/10.1557/jmr.2002.0413.

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The influence of synthesis conditions on the formation of yttrium aluminum garnet (YAG) powders starting from the same solution precursors was investigated by employing a citrate–nitrate gel combustion process and a precursor plasma spraying technique. YAG powders were formed at ≥500 °C, through the citrate–nitrate gel combustion process, without any intermediate phase formation. Time-resolved x-ray experiments were performed for the first time on these citrate–nitrate precursor materials to understand their mode of decomposition. The in situ data confirmed a single-step conversion to YAG from
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7

Djuriš, Katarina, G. Branković, Z. Branković, et al. "Synthesis of Pure and Doped LaMnO3 Powders from Citrate Precursors." Materials Science Forum 555 (September 2007): 237–42. http://dx.doi.org/10.4028/www.scientific.net/msf.555.237.

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In this work pure and doped LMO were prepared using modified Pechini method from lanthanum and manganese citrates. Lanthanum citrate was prepared starting from La2O3, while manganese citrate was prepared from Mn(NO3)2. Valence state of the manganese was controlled by adjusting pH value of the solution and confirmed by EPR and UV/VIS analysis. Thermal treatment conditions for preparation of LMO powders were determined from TG/DTA of dried precursors. XRD results confirmed that pure perovskite phase was successfully prepared in single LMO and Cadoped LMO. SEM and measurements of specific surface
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8

Rajendran, M., and Subba M. Rao. "Synthesis and characterization of barium bis(citrato) oxozirconate(IV) tetrahydrate: A new molecular precursor for fine particle BaZrO3." Journal of Materials Research 9, no. 9 (1994): 2277–84. http://dx.doi.org/10.1557/jmr.1994.2277.

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Barium metazirconate (BaZrO3) fine powder has been produced by thermally decomposing a molecular precursor, barium bis(citrato)oxozirconate(IV) tetrahydrate at about 700 °C. The precursor, Ba[ZrO(C6H6O7)2] · 4H2O (BZO) has been synthesized and characterized by employing a combination of spectroscopic and thermoanalytical techniques. The precursor undergoes thermal decomposition in three major stages: (i) dehydration to give an anhydrous barium zirconyl citrate, (ii) decomposition of the anhydrous citrate in a multistep process to form an ionic oxycarbonate intermediate, Ba2Zr2O5CO3, and (iii)
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9

Marinšek, Marjan, Klementina Zupan, and Jadran Maček. "Citrate-nitrate gel transformation behavior during the synthesis of combustion-derived NiO-yttria-stabilized zirconia composite." Journal of Materials Research 18, no. 7 (2003): 1551–60. http://dx.doi.org/10.1557/jmr.2003.0214.

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NiO-yttria-stabilized zirconia powder mixtures were prepared from reactive citrate-nitrate gels using the combustion technique. The influence of the fuel/oxidant molar ratio in the precursor on the combustion rate and its thermal characteristics was studied by thermal analysis and evolved gas analysis. It was found that the precursor thermal decomposition properties depended strongly on the citrate/nitrate ratio prior to the combustion. Intermediate precursors and final powder ashes were also analyzed by x-ray diffraction.
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10

Petrova, Nikolina, Dimitar Todorovsky, and Veselinka Vasileva. "Synthesis and characterization of Mn-, La-Mn- and La-Ca-Mn-citrates as precursors for LaMnO3 and La1−xCaxMnO3." Open Chemistry 3, no. 2 (2005): 263–78. http://dx.doi.org/10.2478/bf02475995.

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AbstractMn-, LaMn- and LaCaMn-citrates were synthesized at 60–120°C in ethylene glycol medium using chlorides or nitrates as metal sources. Their composition, IR spectra and thermal decomposition were studied. Equimolar La/Mn ratio has been established in the complex, prepared from chloride solution with the same initial composition of the metals. In the isolated three-metallic complex the molar ratio of the metals deviates from the composition in the initial solution. The final products of the heating of Mn- and mixed-metal LaMn-citrates at 1000°C are phase-homogeneous Mn3O4 (hausmannite) and
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11

Louër, D., J. M. Criado, M. J. Dianez, and L. A. Perez-Maqueda. "X-ray powder diffraction study of the thermal behavior of barium titanium citrate hydrate." Powder Diffraction 12, no. 3 (1997): 180–84. http://dx.doi.org/10.1017/s0885715600009684.

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The thermal decomposition of barium bis(citrato)oxotitanate citrate heptahydrate, a molecular precursor of BaTiO3 fine powders is studied by temperature-dependent x-ray powder diffraction and thermogravimetry. A thorough investigation of the dehydration stage is presented. Three crystalline phases containing seven, three, and two water molecules, respectively, are identified from their powder diffraction pattern. The results of pattern indexing are presented and discussed in terms of parameter relationships.
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12

Kassabova-Zhetcheva, Violeta. "Characterization of the citrate precursor, used for synthesis of nanosized Mg-Zn ferrites." Open Chemistry 7, no. 3 (2009): 415–22. http://dx.doi.org/10.2478/s11532-009-0054-7.

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AbstractThe citrate precursor has been used to synthesize nanocrystalline Mg-Zn-ferrites. The nature of the prepared precursor is characterized and compared with those of the precursors studied earlier, prepared by the same process. The study has been performed by inorganic and organic elemental analyses, Fourier Transformed Infrared Spectroscopy (FTIR), Mössbauer spectroscopy, X-ray Photoelectron Spectroscopy (XPS), Electron Paramagnetic Resonance (EPR), Electronic absorption spectrometry in the UV-VIS region, Differential Thermal analysis/ Thermogravimetry (DTA-TG) analyses, and X-ray diffra
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13

Okun, M. M., T. G. Warren, and D. Shields. "In-vitro biosynthesis of multiple preproglucagons results from acetylation of the primary translation products." Journal of Molecular Endocrinology 2, no. 2 (1989): 137–44. http://dx.doi.org/10.1677/jme.0.0020137.

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ABSTRACT In-vitro translation of anglerfish islet mRNA revealed three glucagon precursors (preproglucagons): one with Mr 16 000 and two with Mr 14 000. The two Mr 14 000 precursors were well separated upon isoelectric focusing gels (pI values of 7·2 and 7·3), but had identical peptide maps. Translation of hybrid-selected Mr 14 000 preproglucagon mRNA in the presence of microsomal vesicles revealed that both precursors were processed to the same proglucagon. Northern blot analysis detected two mRNA species encoding Mr 14 000 precursor. A full-length Mr 14 000 preproglucagon cDNA was subcloned i
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14

Chen, Liang Yan, Li Zhang, Hao Zhang, Fan Yang, Zhi Ming Luo, and Chao Fang. "ZnSe Quantum Dot Films Deposition from Modified Chemical Solution with Sodium Citrate." Advanced Materials Research 690-693 (May 2013): 1707–10. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.1707.

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Zinc selenide (ZnSe) quantum dot thin films have been deposited onto microscope glass through chemical bath deposition both from original amonia free alkaline precursors and modified precursors with the adding of sodium citrate as complexing agents. The growth and optical properties of samples from original and modified precursors have been investigated. Its shown that the samples obtained with sodium citrate precursors are uniform and with stable index of refraction. And with the adding of sodium citrate, there is an increase in transmittance.
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15

Sileo, Elsa E., and Silvia E. Jacobo. "Gadolinium–Nickel ferrites prepared from metal citrates precursors." Physica B: Condensed Matter 354, no. 1-4 (2004): 241–45. http://dx.doi.org/10.1016/j.physb.2004.10.002.

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16

Yang, Si Woo, Seung Ho Lee, Dae Ho Lim, Dong Jun Yoo, and Yong Kang. "Synthesis Characteristics of ZnO Powder from Precursors Composed of Nitrate-Citrate Compounds." Korean Chemical Engineering Research 54, no. 3 (2016): 299–304. http://dx.doi.org/10.9713/kcer.2016.54.3.299.

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17

Luo, Shirui, Ruosong Chen, Lan Xiang, and Jing Wang. "Hydrothermal Synthesis of (001) Facet Highly Exposed ZnO Plates: A New Insight into the Effect of Citrate." Crystals 9, no. 11 (2019): 552. http://dx.doi.org/10.3390/cryst9110552.

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In this work, two synthesis routes were applied to investigate the effect of citrates on the construction of the ZnO structure. Well-dispersed ZnO plates with (001) facet highly exposed were prepared via one-step hydrothermal route, while ZnO nanoparticles were obtained via two-step route. In one-step route, citrates were added before the formation of Zn(OH)2 precursor, while citrates were added after the formation of Zn(OH)2. For the first time, the interaction between citrates and the Zn(OH)2 precursor was investigated and citrates that participated in the formation of Zn(OH)2 were the main
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18

Dimitrova, Mariela T., and Sasho V. Vassilev. "Synthesis of Nanosized Powders for Lead–Acid Battery Pastes by Recycling of Used Batteries." Materials Proceedings 4, no. 1 (2020): 78. http://dx.doi.org/10.3390/iocn2020-07853.

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In the present work we have investigated the oxysulfate fraction of spent lead–acid battery pastes in search of an optimal method for its recycling. For this purpose, desulfurization and leaching were performed in one step by simultaneously adding aqueous solutions of sodium citrate and citric acid at varying temperatures (25–100 °С) and heat treatment times (1–2 h) in order to obtain a lead citrate precursor for direct application in the production of lead oxide powder. Two types of lead citrate were obtained: Pb(C6H6O7).H2O and Pb3(C6H5O7)2.3H2O. After calcination at low temperature (300 °C)
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19

Poolsri, Wan-angkan, Phornpun Phokrai, Somrudee Suwankulanan, et al. "Combination of Mitochondrial and Plasma Membrane Citrate Transporter Inhibitors Inhibits De Novo Lipogenesis Pathway and Triggers Apoptosis in Hepatocellular Carcinoma Cells." BioMed Research International 2018 (2018): 1–15. http://dx.doi.org/10.1155/2018/3683026.

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Increased expression levels of both mitochondrial citrate transporter (CTP) and plasma membrane citrate transporter (PMCT) proteins have been found in various cancers. The transported citrates by these two transporter proteins provide acetyl-CoA precursors for the de novo lipogenesis (DNL) pathway to support a high rate of cancer cell viability and development. Inhibition of the DNL pathway promotes cancer cell apoptosis without apparent cytotoxic to normal cells, leading to the representation of selective and powerful targets for cancer therapy. The present study demonstrates that treatments
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20

Maurizi, L., F. Bouyer, M. Ariane, R. Chassagnon, and N. Millot. "Fast and continuous synthesis of nanostructured iron spinel in supercritical water: influence of cations and citrates." RSC Adv. 4, no. 86 (2014): 45673–78. http://dx.doi.org/10.1039/c4ra08562k.

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21

Bochenek, Dariusz, and Przemysław Niemiec. "Dielectric properties of the PFN ceramics obtained different chemical-wet technology and sintering by hot pressing method." MATEC Web of Conferences 242 (2018): 01002. http://dx.doi.org/10.1051/matecconf/201824201002.

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The paper shows three kinds of chemical-wet technology synthesis of the ferroelectric-ferrimagnetic PbFe1/2Nb1/2O3 materials and technology process of the ceramic samples sintered by hot pressing method. In the technological process of the PFN powders were used follows precursors: lead acetate trihydrate and niobium ethoxide while an iron-related components were changed: iron nitrate obtained by first sol-gel technology (PFN-n), iron oxalate obtained by second sol-gel technology (PFN-ox) and iron citrate obtained by third technology (PFN-c). XRD, SEM tests and temperature measurements of diele
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22

Kakimoto, Ken-ichi, Takeshi Ito, and Hitoshi Ohsato. "Synthesis of KNbO3Piezoelectric Ceramics Using Citrate Precursors." Japanese Journal of Applied Physics 47, no. 9 (2008): 7669–72. http://dx.doi.org/10.1143/jjap.47.7669.

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23

Zhecheva, E., R. Stoyanova, M. Gorova, F. R. Alcantara, J. Morales, and J. L. Tirado. "Ultrafine layered LiCoO2 obtained from citrate precursors." Ionics 3, no. 1-2 (1997): 1–15. http://dx.doi.org/10.1007/bf02375518.

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24

Rajendran, M., and M. Subba Rao. "Formation of BaTiO3 from Citrate Precursor." Journal of Solid State Chemistry 113, no. 2 (1994): 239–47. http://dx.doi.org/10.1006/jssc.1994.1366.

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25

Kotsyubynsky, V., A. Hrubiak, L. Mohnatska, M. Gasyuk, and V. Moklyak. "The Effect of Precursors Concentration on the Structure and Micromagnetic Properties of Ultrafine Iron Oxides Obtained by Sol-Gel Route." Journal of Vasyl Stefanyk Precarpathian National University 3, no. 1 (2016): 38–45. http://dx.doi.org/10.15330/jpnu.3.1.38-45.

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Nanodispersed composite materials -Fe2O3/-Fe2O3 were obtained by thermaldecomposition of iron citrate xerogel hydrate synthesized by iron nitrate and citrate acid solutionswith different colloidal solutions of Fe(NO3)39H2O and С6Н8О7 Н2О for different molar ratiobetween precursors. The influence of the precursors molar concentration and calcinationtemperature on the material phase composition, crystalline and magnetic microstructure, surfacecondition was studied. Methods of X-ray diffraction, Mössbauer spectroscopy, electron microscopyand IR - spectroscopy were used.
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26

Mazaki, Hiromasa, Masato Kakihana, and Hiroshi Yasuoka. "Synthesis of YBa2Cu4Oy from citrate sol-gel precursors." Journal of the Japan Society of Powder and Powder Metallurgy 38, no. 2 (1991): 211–14. http://dx.doi.org/10.2497/jjspm.38.211.

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27

Ruiz-Agudo, Encarnacion, Cristina Ruiz-Agudo, Fulvio Di Lorenzo, Pedro Alvarez-Lloret, Aurelia Ibañez-Velasco, and Carlos Rodriguez-Navarro. "Citrate Stabilizes Hydroxylapatite Precursors: Implications for Bone Mineralization." ACS Biomaterials Science & Engineering 7, no. 6 (2021): 2346–57. http://dx.doi.org/10.1021/acsbiomaterials.1c00196.

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28

KIM, Yang-Hoon, Jin-Seung PARK, Jae-Yong CHO, Kwang Myung CHO, Young-Hoon PARK, and Jeewon LEE. "Proteomic response analysis of a threonine-overproducing mutant of Escherichia coli." Biochemical Journal 381, no. 3 (2004): 823–29. http://dx.doi.org/10.1042/bj20031763.

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The proteomic response of a threonine-overproducing mutant of Escherichia coli was quantitatively analysed by two-dimensional electrophoresis. Evidently, 12 metabolic enzymes that are involved in threonine biosynthesis showed a significant difference in intracellular protein level between the mutant and native strain. The level of malate dehydrogenase was more than 30-fold higher in the mutant strain, whereas the synthesis of citrate synthase seemed to be severely inhibited in the mutant. Therefore, in the mutant, it is probable that the conversion of oxaloacetate into citrate was severely inh
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29

Constantinescu, F., R. Holiastou, D. Niarchos, et al. "Relation of starting precursors to the resulting high-Tc phases in the Pb and Sb doped Bi—Sr—Ca—Cu—O system." Journal of Materials Research 9, no. 2 (1994): 292–96. http://dx.doi.org/10.1557/jmr.1994.0292.

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The introduction of more reactive precursors for Pb and Sr (oxalates), as well as Ca (citrate) and the use of a Bi nitrate decomposition route, has increased the percentage of the high-Tc (2223) phase in the Bi—Sr—Ca—Cu—O (BSCCO) system. Partial substitution of Bi(Pb) with Sb gives an almost single (2223) phase sample. In addition, a single (2212) phase sample is obtained when high purity Bi2O3 is used as a precursor, whereas Bi acetate leads to semiconducting behavior. The morphology of the samples is studied with a scanning electron microscope (SEM), the stoichiometry with energy-dispersive
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Peys, Nick, Peter Adriaensens, Sabine Van Doorslaer, et al. "Aqueous citrato-oxovanadate(iv) precursor solutions for VO2: synthesis, spectroscopic investigation and thermal analysis." Dalton Trans. 43, no. 33 (2014): 12614–23. http://dx.doi.org/10.1039/c4dt01346h.

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Gajbhiye, N. S., U. Bhattacharya, and V. S. Darshane. "Thermal decomposition of zinc-iron citrate precursor." Thermochimica Acta 264 (October 1995): 219–30. http://dx.doi.org/10.1016/0040-6031(95)02331-u.

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Balagopal, N., H. K. Varma, K. G. K. Warrier, and A. D. Damodaran. "Citrate precursor derived alumina-ceria composite powders." Ceramics International 18, no. 2 (1992): 107–11. http://dx.doi.org/10.1016/0272-8842(92)90039-g.

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Mazaki, Hiromasa, Masato Kakihana, and Hiroshi Yasuoka. "Synthesis of Bi2Sr2Ca1-xYxCu2Oy from citrate sol-gel precursors." Journal of the Japan Society of Powder and Powder Metallurgy 38, no. 2 (1991): 229–32. http://dx.doi.org/10.2497/jjspm.38.229.

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Wang, N. H., C. M. Wang, H. C. I. Kao, D. C. Ling, H. C. Ku та K. H. Lii. "Preparation of 95 K Bi2CaSr2Cu2O8+δSuperconductor from Citrate Precursors". Japanese Journal of Applied Physics 28, Part 2, No. 9 (1989): L1505—L1507. http://dx.doi.org/10.1143/jjap.28.l1505.

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Mazaki, Hiromasa, Masato Kakihana, and Hiroshi Yasuoka. "Complex Susceptibility of Bi2Sr2Ca1-xYxCu2Oyfrom Citrate Sol-Gel Precursors." Japanese Journal of Applied Physics 30, Part 1, No. 1 (1991): 38–42. http://dx.doi.org/10.1143/jjap.30.38.

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Furcone, S. L., and Y. ‐M Chiang. "Spin‐on Bi4Sr3Ca3Cu4O16+xsuperconducting thin films from citrate precursors." Applied Physics Letters 52, no. 25 (1988): 2180–82. http://dx.doi.org/10.1063/1.99762.

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37

Qi, Lei Lei. "Study on Preparation of Porous ZnO Microspheres and Photocatalytic Performance." Applied Mechanics and Materials 686 (October 2014): 45–50. http://dx.doi.org/10.4028/www.scientific.net/amm.686.45.

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This paper introduces the method of porous ZnO microspheres by sodium citrate assisted hydrothermal synthesis with a mild, economy: first, basic synthesis globose precursor of Zinc Carbonate Hydroxide, then followed by thermal decompose the precursor to obtain porous Zinc Oxide microspheres. The morphology and structure of the precursor and synthesized porous microspheres were characterize by a series of methods, and did a series of experiments by changing dosage and reaction time of the sodium citrate and urea, finally the paper discussed the formation mechanism of porous ZnO microspheres.
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38

Yang, Ting, Hao Wang, Jiantie Xu, et al. "Preparation of a Sb/Cu2Sb/C composite as an anode material for lithium-ion batteries." RSC Advances 6, no. 82 (2016): 78959–62. http://dx.doi.org/10.1039/c6ra14072f.

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39

Li, Jun Feng, Yang Gao, Liang Zhao Zhong, et al. "Facile Self-Assembly Synthesis of Hierarchical 3D Flowerlike Calcium Citrate Microspheres." Journal of Nano Research 45 (January 2017): 185–92. http://dx.doi.org/10.4028/www.scientific.net/jnanor.45.185.

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Three-dimensional (3D) flowerlike calcium citrate microspheres assembled from nanosheets were successfully synthesized through a soft chemical method. The phase structure, morphology and microstructure of the synthesized products were characterized by the SEM, XRD, infrared and Raman spectroscopy. The characterization results indicated that the well-organized products with the diameter ranging from 10 to 30μm were composed of nanosheet precursors (50~500nm-50~200nm-8~30nm). The (200) crystal plane was the preferential growth face in the self-assembly process and the sheet precursors could be p
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40

Liu, Jian, Isabella Römer, Selina Vi Yu Tang, Eugenia Valsami-Jones, and Richard E. Palmer. "Crystallinity depends on choice of iron salt precursor in the continuous hydrothermal synthesis of Fe–Co oxide nanoparticles." RSC Adv. 7, no. 59 (2017): 37436–40. http://dx.doi.org/10.1039/c7ra06647c.

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41

Santos, Andarair Gomes, Isabely Fernandes Costa, Francisco Santos, and Carlson Pereira de Souza. "EFEITO DO MÉTODO DE COMPLEXAÇÃO COMBINANDO EDTA - CITRATO E COPRECIPITAÇÃO EM MEIO OXALATO NA SÍNTESE DA SrCo0,8Fe0,2O3-d." HOLOS 3 (July 24, 2015): 30. http://dx.doi.org/10.15628/holos.2015.2160.

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Esta trabalho enfoca o método de síntese de coprecipitação para preparação da perovsquita SrCo0,8Fe0,2O3-d e suas caracterizações, desenvolvendo uma rota metodológica alternativa de síntese a partir da coprecipitação via meio oxalato. No intuito de verificar a influência do método, a perovsquita foi sintetizada também com base no método de complexação combinando EDTA - Citrato. Ambos os métodos de síntese permitiram obter pós monofásicos. A síntese com base no método via coprecipitação em meio oxalato permitiu obter tamanho de partículas na mesma ordem de grandeza que os obtidos a partir do mé
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42

Mariño Otero, Teobaldo, Yodalgis Mosqueda Laffita, Carlos Ricardo Milian Pila, and Eduardo Pérez Cappe. "L3xLa2/3-XTiO3 Nanoparticles Obtained from a Low Temperature Synthesis Route." Journal of Nano Research 14 (April 2011): 105–11. http://dx.doi.org/10.4028/www.scientific.net/jnanor.14.105.

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In this work, the synthesis of Li3xLa2/3-xTiO3 oxide is studied by thermal decomposition of citrate precursor at very low temperature which has not been yet reported in the literature for these compounds. The characterization of oxides and its precursor was realized by DRX, IR, ATD and TEM techniques. The results show the formation of a new chemical compound (precursor) as well as several advantages of the citrate method in relation to reported ones in the literature: the ostensible decreasing of temperature Li3xLa2/3-xTiO3 formation and the decreasing of particle size on the nanometric scale
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43

Luqian, Weng, Huang Dongsheng, and Jiang XinXiang. "Synthesis of aluminum nitride from aluminum citrate precursor." Materials Letters 18, no. 3 (1993): 159–62. http://dx.doi.org/10.1016/0167-577x(93)90118-h.

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44

Kuzema, Pavlo, Yulia Bolbukh, Agnieszka Lipke, Marek Majdan, and Valentyn Tertykh. "Luminescent Sol-Gel Glasses from Silicate–Citrate–(Thio)Ureate Precursors." Colloids and Interfaces 3, no. 1 (2019): 11. http://dx.doi.org/10.3390/colloids3010011.

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Recent advancements in synthesis and analysis of the composites based on silica and carbon quantum dots have revealed great potential of such systems in bioimaging, sensor, as well as solid-state lighting applications. Most of the synthetic methods for obtaining such materials are still relatively complex and costly. The aim of this work was to study the luminescent properties of silica-based composites prepared by the simple sol-gel method using low-cost silicate–citrate–(thio)ureate precursors. The glassy composites were prepared by acid hydrolysis of ethyl silicate (40%) in aqueous solution
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45

Alcántara, R., P. Lavela, J. L. Tirado, R. Stoyanova, E. Kuzmanova, and E. Zhecheva. "Lithium−Nickel Citrate Precursors for the Preparation of LiNiO2Insertion Electrodes." Chemistry of Materials 9, no. 10 (1997): 2145–55. http://dx.doi.org/10.1021/cm970236a.

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46

Briskeby, Stein Trygve, Mikhail Tsypkin, Reidar Tunold, and Svein Sunde. "Preparation of electrocatalysts by reduction of precursors with sodium citrate." RSC Adv. 4, no. 83 (2014): 44185–92. http://dx.doi.org/10.1039/c4ra06639a.

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47

Ryu, Jeong Ho, Jong Won Yoon, Chang Sung Lim, and Kwang Bo Shim. "Microwave-Assisted Synthesis of MWO4 and MMoO4 (M = Ca, Ni) Nano-Powders Using Citrate Complex Precursor." Key Engineering Materials 317-318 (August 2006): 223–26. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.223.

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Nano-sized MWO4 and MMoO4 (M = Ca, Ni) powders, which have scheelite and wolframite type structure, were successfully synthesized at low temperatures by a modified citrate complex method assisted by microwave irradiation. The citrate complex precursors were heattreated at temperatures from 300 to 600 °C for 3 h. Crystallization of the MWO4 and MMoO4 precursors was detected at 400 °C and completed at a temperature of 500 °C. Most of the MWO4 and MMoO4 powders heat-treated between 300 and 600 °C showed primarily spherical and homogeneous morphology. The average crystallite sizes of MWO4 (M = Ca,
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48

Cho, Seungho, Ji-Wook Jang, Seung-Ho Jung, Bo Ram Lee, Eugene Oh, and Kun-Hong Lee. "Precursor Effects of Citric Acid and Citrates on ZnO Crystal Formation." Langmuir 25, no. 6 (2009): 3825–31. http://dx.doi.org/10.1021/la804009g.

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49

Gupta, Manik, Munish Gupta, Vivek Sheel Jaswal, and B. S. Randhawa. "Mössbauer studies on thermal decomposition of rubidium bis(citrato)ferrate(III) precursor prepared by precursor method." Journal of Analytical and Applied Pyrolysis 104 (November 2013): 73–76. http://dx.doi.org/10.1016/j.jaap.2013.09.006.

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50

Mahpudz, Aishah, Siu Ling Lim, Hitoshi Inokawa, Katsuki Kusakabe, and Ryuichi Tomoshige. "Layered double hydroxide supported cobalt nanocluster: size control and the effect in catalytic hydrogen generation." E3S Web of Conferences 287 (2021): 02009. http://dx.doi.org/10.1051/e3sconf/202128702009.

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Synthesizing metal nanoclusters with diameters smaller than 5nm is challenging, but desirable because of the high ratio of surface area to interior atom. However, in this report it was achieved by utilizing magnesium-aluminium layered double hydroxide (Mg/Al-LDH) as a host for cobalt citrate anion precursor, which was later reduced into cobalt nanoclusters (Co-NC). Size of the Co-NC was controlled by changing the concentration of cobalt-citrate (Co-citrate) precursor during anion exchange. XRD and FTIR showed that Co-citrate precursor was successfully intercalated on the LDH while nitrogen ads
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