Thermogravimetric study of the surfactant–diethanolamine–titanium isopropoxide system behavior

Athanasiou, Athanasios E.; Mitsionis, Anastasios; Skouras, G.; Todorova, N.; Trapalis, C.; Vaimakis, T.

doi:10.1007/s10973-013-3407-6

Cited by 6 publications

(3 citation statements)

References 29 publications

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“…Note that the use of additives in DMF-AA, DEA, and CA entails the formation of intermediates such as aconitic acid in CA 40 , 44 and modifies the covalency of the metal–ligand bonds, changing the decomposition temperatures of the different thermal events when compared to pure nitrate decomposition. 30 , 39 , 43 , 45 , 46 In addition, in the case of DEA, the strong exothermic DSC peak at 310 °C is related to the violent oxidative decomposition of diethanolamine to NH 3 and acetic and formic acid. 41 , 47 At temperatures above 320 °C, the decomposition of acetic acid into CH 4 and CO 2 48 and the condensation of La(NO 3 ) 3 and Sr(NO 3 ) 2 , which release gases such as H 2 O, NO x , and CO 2 , take place.…”

Section: Resultsmentioning

confidence: 99%

“…At these temperatures, according to the reported thermal decomposition of the individual metal nitrates, simultaneous phenomena occur including dehydration of metal nitrates to form concentrated salt solutions, the condensation of Cr(NO 3 ) 3 , and the elimination of NO x and CO 2 as reaction product gases. , The decomposition of the solvent 2-methoxyethanol into CO 2 and CO is expected to occur in the same temperature range. Note that the use of additives in DMF-AA, DEA, and CA entails the formation of intermediates such as aconitic acid in CA , and modifies the covalency of the metal–ligand bonds, changing the decomposition temperatures of the different thermal events when compared to pure nitrate decomposition. ,,,, In addition, in the case of DEA, the strong exothermic DSC peak at 310 °C is related to the violent oxidative decomposition of diethanolamine to NH 3 and acetic and formic acid. , At temperatures above 320 °C, the decomposition of acetic acid into CH 4 and CO 2 and the condensation of La(NO 3 ) 3 and Sr(NO 3 ) 2 , which release gases such as H 2 O, NO x , and CO 2 , take place . These events are related to the presence of endothermic peaks at temperatures of ∼400 °C and ∼600 °C, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Chemical Synthesis of La_0.75Sr_0.25CrO₃ Thin Films for p-Type Transparent Conducting Electrodes

et al. 2023

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The imperative need for highly performant and stable p-type transparent electrodes based on abundant metals is stimulating the research on perovskite oxide thin films. Moreover, exploring the preparation of these materials with the use of cost-efficient and scalable solution-based techniques is a promising approach to extract their full potential. Herein, we present the design of a chemical route, based on metal nitrate precursors, for the preparation of pure phase La0.75Sr0.25CrO3 (LSCO) thin films to be used as a p-type transparent conductive electrode. Different solution chemistries have been evaluated to ultimately obtain dense, epitaxial, and almost relaxed LSCO films. Optical characterization of the optimized LSCO films reveals promising high transparency with ∼67% transmittance while room temperature resistivity values are 1.4 Ω·cm. It is suggested that the presence of structural defects, i.e., antiphase boundaries and misfit dislocations, affects the electrical behavior of LSCO films. Monochromated electron energy loss spectroscopy allowed changes in the electronic structure in LSCO films to be determined, revealing the creation of Cr4+ and unoccupied states at the O 2p upon Sr-doping. This work offers a new venue to prepare and further investigate cost-effective functional perovskite oxides with potential to be used as p-type transparent conducting electrodes and be easily integrated in many oxide heterostructures.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Chemical Synthesis of La_0.75Sr_0.25CrO₃ Thin Films for p-Type Transparent Conducting Electrodes

et al. 2023

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“…Finally soft templates are removed during careful thermal treatment. Another mechanism is based on using stable micellar liquid crystal phase (surfactants) [17][18][19] which can take various morphologies (hexagonal, cubic, lamellar) and as in the former method, precursors are deposited with sol-gel process on a surface of the surfactants.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, microstructural properties and chemical stability of 3DOM structures of Sr1−xYxTiO3

Drożdż

Łańcucki

Łącz

2016

J Therm Anal Calorim

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Yttrium-doped strontium titanate is a perovskite with a great potential to act as an anode material for solid oxide fuel cells. Two different synthesis procedures have been used to modify and optimize perovskite morphology. First way involved usage of surfactant TX-100 and led to obtainment of irregular structure with pore diameter of 150-200 nm, whereas in the second one, spheres of poly (methyl methacrylate) acted as soft templates and led to attainment of highly regular hollow perovskite network with pore diameter of around 110 nm. The discussion concerning the influence of yttrium on thermal properties of material, thermal expansion coefficients and chemical stability (in water-carbon dioxide rich atmosphere) were presented. It was found that introduction of yttrium into the strontium titanate leads to the decrease of SrTiO 3 shrinkage temperature. Moreover, coupling TG measurements with mass spectrometry allowed to determinate behavior of pure and yttrium-doped strontium titanate in H 2 O and CO 2 containing atmosphere. It was observed that addition of yttrium into SrTiO 3 has no influence on materials stability.

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Studies on Diels–Alder thermoresponsive networks based on ether–urethane bismaleimide functionalized poly(vinyl alcohol)

Ursache¹,

Găină²,

Gaina³

et al. 2014

J Therm Anal Calorim

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Thermogravimetric study of the surfactant–diethanolamine–titanium isopropoxide system behavior

Cited by 6 publications

References 29 publications

Chemical Synthesis of La_0.75Sr_0.25CrO₃ Thin Films for p-Type Transparent Conducting Electrodes

Chemical Synthesis of La_0.75Sr_0.25CrO₃ Thin Films for p-Type Transparent Conducting Electrodes

Synthesis, microstructural properties and chemical stability of 3DOM structures of Sr1−xYxTiO3

Studies on Diels–Alder thermoresponsive networks based on ether–urethane bismaleimide functionalized poly(vinyl alcohol)

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Thermogravimetric study of the surfactant–diethanolamine–titanium isopropoxide system behavior

Cited by 6 publications

References 29 publications

Chemical Synthesis of La0.75Sr0.25CrO3 Thin Films for p-Type Transparent Conducting Electrodes

Chemical Synthesis of La0.75Sr0.25CrO3 Thin Films for p-Type Transparent Conducting Electrodes

Synthesis, microstructural properties and chemical stability of 3DOM structures of Sr1−xYxTiO3

Studies on Diels–Alder thermoresponsive networks based on ether–urethane bismaleimide functionalized poly(vinyl alcohol)

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Product

Resources

About

Chemical Synthesis of La_0.75Sr_0.25CrO₃ Thin Films for p-Type Transparent Conducting Electrodes

Chemical Synthesis of La_0.75Sr_0.25CrO₃ Thin Films for p-Type Transparent Conducting Electrodes