Fabrication of ceria particles using glycine nitrate spray pyrolysis

Shih, Shao‐Ju; Tzeng, Wei-Lung; Kuo, Wei-Lun

doi:10.1016/j.surfcoat.2014.04.016

Cited by 20 publications

(9 citation statements)

References 30 publications

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“…Classes of microstructures in SCS-derived materials: ZnO (type A), NiO–Ni (type B), CeO 2 (type C), CuO (type D), and W 18 O 49 (type E). Reprinted with permission from above references.…”

Section: Fundamentals Of Solution Combustion Synthesismentioning

confidence: 99%

“…The type C microstructures (Figure ), hollow spheres, are usually obtained in the processes of spray pyrolysis. For example, Shih et al atomized solutions of cerium ammonium nitrate (NH 4 ) 2 Ce(NO 3 ) 6 and glycine into small droplets, and transferred them by air flow into a heated tubular reactor with three heating zones of 250, 650, and 350 °C …”

Section: Microstructural Characteristics Of Combustion-derived Nanoma...mentioning

confidence: 99%

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Solution Combustion Synthesis of Nanoscale Materials

Mukasyan²,

et al. 2016

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Solution combustion is an exciting phenomenon, which involves propagation of self-sustained exothermic reactions along an aqueous or sol-gel media. This process allows for the synthesis of a variety of nanoscale materials, including oxides, metals, alloys, and sulfides. This Review focuses on the analysis of new approaches and results in the field of solution combustion synthesis (SCS) obtained during recent years. Thermodynamics and kinetics of reactive solutions used in different chemical routes are considered, and the role of process parameters is discussed, emphasizing the chemical mechanisms that are responsible for rapid self-sustained combustion reactions. The basic principles for controlling the composition, structure, and nanostructure of SCS products, and routes to regulate the size and morphology of the nanoscale materials are also reviewed. Recently developed systems that lead to the formation of novel materials and unique structures (e.g., thin films and two-dimensional crystals) with unusual properties are outlined. To demonstrate the versatility of the approach, several application categories of SCS produced materials, such as for energy conversion and storage, optical devices, catalysts, and various important nanoceramics (e.g., bio-, electro-, magnetic), are discussed.

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Section: Fundamentals Of Solution Combustion Synthesismentioning

confidence: 99%

Section: Microstructural Characteristics Of Combustion-derived Nanoma...mentioning

confidence: 99%

Solution Combustion Synthesis of Nanoscale Materials

Mukasyan²,

et al. 2016

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“…A variety of methods to synthesize ceria have been reported until now, including precipitation [20], spray pyrolysis [21,22], thermal hydrolysis [23], micro-emulsion [24], combustion [25], sonochemical [26], hydrothermal [27], solvothermal [28,29], and sol-gel [30] techniques. It is a well-established fact that changing the synthesis parameters, such as temperature, pressure, pH, and crystallization time, produces different particle sizes and morphologies, which, in turn, alter the physical and chemical properties of ceria, as well as the catalytic performance of the ceria-supported catalysts.…”

Section: +mentioning

confidence: 99%

Effect of Microgravity on Synthesis of Nano Ceria

et al. 2015

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Cerium oxide (CeO2) was prepared using a controlled-precipitation method under microgravity at the International Space Station (ISS). For comparison, ceria was also synthesized under normal-gravity conditions (referred as control). The Brunauer-Emmett-Teller (BET) surface area, pore volume and pore size analysis results indicated that the ceria particles grown in space had lower surface area and pore volume compared to the control samples. Furthermore, the space samples had a broader pore size distribution ranging from 30-600 Å, whereas the control samples consisted of pore sizes from 30-50 Å range. Structural information of the ceria particles were obtained using TEM and XRD. Based on the TEM images, it was confirmed that the space samples were predominantly nano-rods, on the other hand, only nano-polyhedra particles were seen in the control ceria samples. The average particle size was larger for ceria samples synthesized in space. XRD results showed higher crystallinity as well as larger mean crystal size for the space samples. The effect of sodium hydroxide concentration on synthesis of ceria was also examined using 1 M and 3 M solutions. It was found that the control samples, prepared in 1 M and 3 M sodium hydroxide solutions, did not show a significant difference between the two. However, when the ceria samples were prepared OPEN ACCESSCatalysts 2015, 5 1307 in a more basic medium (3 M) under microgravity, a decrease in the particle size of the nano-rods and appearances of nano-polyhedra and spheres were observed.

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“…Numerous methods for synthesis of 3D porous CeO 2 with different morphologies have been developed, including spray pyrolysis, 4 precipitation methods, 5,6 combustion synthesis, 7 hydrothermal methods, [8][9][10] etc. However, among these methods, hazardous reagents and a series of energy consuming and tedious manipulations are usually needed.…”

Section: Introductionmentioning

confidence: 99%