Review of Recent Studies on Solution Combustion Synthesis of Nanostructured Catalysts

Thoda, Olga; Xanthopoulou, Galina; Vekinis, G.; Chroneos, A.

doi:10.1002/adem.201800047

Cited by 88 publications

(37 citation statements)

References 195 publications

(203 reference statements)

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“…Solution combustion synthesis (SCS) is a convenient synthesis route to obtain perovskite-type materials [1][2][3][4]. In SCS, a fast heat-induced chemical chain reaction propagates through a gel network between the oxidizing agents, namely metal nitrates (which represent also the source of metal cations), and the reducing organic molecules (fuel) with chelating properties towards the metal cations [2].…”

Section: Introductionmentioning

confidence: 99%

Sucrose-Assisted Solution Combustion Synthesis of Doped Strontium Ferrate Perovskite-Type Electrocatalysts: Primary Role of the Secondary Fuel

et al. 2020

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The methodologies and experimental conditions used for the synthesis of cathode materials for electrochemical devices strongly influence their electrocatalytic performance. In particular, solution combustion synthesis is a convenient and versatile methodology allowing a fine-tuning of the properties of the material. In this work, we used for the first time a sucrose assisted-solution combustion synthesis for the preparation of Cerium and Cobalt-doped SrFeO3–δ electrocatalysts and we investigated the effect of polyethylene glycol (PEG) addition as a secondary fuel on their structural, microstructural, redox and electrochemical properties. The perovskite-type powders were characterized by X-ray diffraction coupled with Rietveld refinement, scanning, and high-resolution transmission electron microscopies, thermogravimetric analysis, nitrogen adsorption measurements, and temperature-programmed reduction. Electrical conductivity and overpotential measurements were performed after the deposition of the powders onto a Gd-doped ceria electrolyte pellet. Stable high-valence B-site cations were detected in the powders prepared from sucrose-PEG fuel mixtures, although a substantial improvement of the conductivity and a decrease of the overpotential values were obtained only with high molecular weight PEG. The superior electrochemical performance obtained using PEG with high molecular weight has been ascribed to a faster interaction of the powder with the oxygen gas phase favored by the nanometer-sized crystalline domains.

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Section: Introductionmentioning

confidence: 99%

Sucrose-Assisted Solution Combustion Synthesis of Doped Strontium Ferrate Perovskite-Type Electrocatalysts: Primary Role of the Secondary Fuel

et al. 2020

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“…This is mainly due to the formation of impurity phases. Given that when burning a glycine-nitrate mixture, the main gaseous reaction products are N2, CO2 and H2O [19], the overall empirical redox reaction can be expressed as follows:…”

Section: Resultsmentioning

confidence: 99%

SYNTHESIS AND STUDY OF THE PROPERTIES OF MAGNETICALLY SEPARABLE NANOPHOTOCATALYST BiFeO3

Orudzhev¹,

Алиханов²,

Рабаданов³

et al. 2018

Chemical Problems

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The magnetically separable nanophotocatalyst BiFeO3 were synthesis via facile one-step the selfpropagating combustion of solutions method. It is shown that this method can be used to synthesize a phase homogeneous and nanosized powder with a BiFeO3 phase purity 99%. The effect of heat treated temperature on the morphology, structure and optical properties of BiFeO3 is investigated. The optimal parameters of heat treating temperature for the application of BiFeO3 as a photocatalyst are established. Using Mulliken's electronegativity theory, a possible mechanism of methyl orange (MO) decomposition was established. It is shown that the most probable is the oxidation of MO by hydroxyl radicals.

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“…It is an exothermic process and is characterized by redox reactions in a water solution containing metal nitrates as oxidizers and various organic compounds as reducers [17,18] At a pre-heating temperature range of 300-600 • C, the water is evaporated and the remaining reactants dry and heat up rapidly. Within, at most, a few minutes, they ignite and sustain a rapid exothermic reaction which results in foam-like, nano-structured, powder-form [19] SCS products with a pronounced three-dimensional dendritic structure which occurs due to the formation of hydrates when the nitrates are heated in water and the extensive gas generation during SCS [20,21].…”

Section: Solution Combustion Synthesismentioning

confidence: 99%

Effects of Precursor Concentration in Solvent and Nanomaterials Room Temperature Aging on the Growth Morphology and Surface Characteristics of Ni–NiO Nanocatalysts Produced by Dendrites Combustion during SCS

et al. 2019

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The morphology and surface characteristics of SCS(Solution Combustion Synthesis)-derived Ni–NiO nanocatalysts were studied. The ΤΕΜ results highlighted that the nanomaterial’s microstructure was modified by changing the reactants’ concentrations. The dendrites’ growth conditions were the main factors responsible for the observed changes in the nanomaterials’ crystallite size. Infrared camera measurements demonstrated a new type of combustion through dendrites. The XPS analysis revealed that the NiO structure resulted in the bridging of the oxygen structure that acted as an inhibitor of hydrogen adsorption on the catalytic surface and, consequently, the activity reduction. The RF-IGC indicated three different kinds of active sites with different energies of adsorption on the fresh catalyst and only one type on the aged catalyst. Aging of the nanomaterial was associated with changes in the microstructure of its surface by a gradual change in the chemical composition of the active centers.

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Review of Recent Studies on Solution Combustion Synthesis of Nanostructured Catalysts

Cited by 88 publications

References 195 publications

Sucrose-Assisted Solution Combustion Synthesis of Doped Strontium Ferrate Perovskite-Type Electrocatalysts: Primary Role of the Secondary Fuel

Sucrose-Assisted Solution Combustion Synthesis of Doped Strontium Ferrate Perovskite-Type Electrocatalysts: Primary Role of the Secondary Fuel

SYNTHESIS AND STUDY OF THE PROPERTIES OF MAGNETICALLY SEPARABLE NANOPHOTOCATALYST BiFeO3

Effects of Precursor Concentration in Solvent and Nanomaterials Room Temperature Aging on the Growth Morphology and Surface Characteristics of Ni–NiO Nanocatalysts Produced by Dendrites Combustion during SCS

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