Comparative study on structural and optical features of undoped and Eu3+ doped Pr6O11 synthesized via sol-gel and flame spray pyrolysis

Aritman, Idil; Gergeroglu, Hazal; Sakar, Neslihan

doi:10.1016/j.oceram.2020.100038

Cited by 5 publications

(1 citation statement)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Addition of Pr6O11 was complicated by its nature of various oxidation states. While it is well-known that Pr6O11 is the most common and stable form at normal atmospheric environment, it can be rewritten as Pr2O3.4PrO2 which is a mixed oxide with Pr oxidation states of 3+ and 4+ [18]. The Pr:ZrSiO4 pigment was reported to be a substitutional solid solution of Pr 3+ cation in a zircon crystal structure [11] or Pr 4+ (0.96 Å) with zircon (Zr 4+ , 0.84 Å) lattice [4].…”

Section: Compositionmentioning

confidence: 99%

Synthesis of zircon pigments from rice husk ash and their performance in ceramic glaze

2023

View full text Add to dashboard Cite

ZrSiO4-based pigments have been known to be very stable in ceramic glazes but require a high firing temperature required for phase formation. This study examined the feasibility of using rice husk waste as a substitute for crystalline SiO2. The amorphous form of silica with some impurities was obtained by calcining the rice husk at 800℃. The general chemical formula were (Zr0.9M0.1)SiO4, where M = V, Pr, Fe and Cr. The solid-state processing was achieved by firing at 1300℃ for 12 h with NaF (5 wt%). X-ray Diffraction revealed a lower relative fraction between ZrO2 (secondary phase) and ZrSiO4 in the RHA systems compared to the oxide system for all dopants. Amorphousness of RHA did help enhance phase formability. The particle sizes were in the 3 µm to 5 µm range. Elemental analysis revealed some areas with intense signals of zirconium, indicating unreacted ZrO2 particles. Colorations appeared to be blue, yellow, brown and green for dopants of V, Pr, Fe and Cr, respectively. Technological performance was tested in a practical ceramic glaze and frequently used raw materials fired at its maturation point. The results of this study hold huge potential for using rice husks for sustainable manufacturing of pigments as green products.

show abstract

Section: Compositionmentioning

confidence: 99%

Synthesis of zircon pigments from rice husk ash and their performance in ceramic glaze

2023

View full text Add to dashboard Cite

show abstract

Seeding Layer Effect on the Microstructure of Hydrothermally Grown α‐Manganese Dioxide Nanowires on Three‐Dimensional Graphene Foam

Feyza Yavuz,

Güneş,

Bartu Aydın

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

Hydrothermal synthesis is a straightforward approach for producing high‐yield manganese dioxide (MnO2) nanostructures with efficient morphological control at low temperatures. This study investigates the microstructural dependency of hydrothermally grown α‐MnO2 nanowires (NWs) on pre‐treatment conditions on the substrate surface. Within this scope, α‐MnO2 NWs were synthesized on chemical vapor deposition (CVD)‐based graphene foam (GF) substrates pre‐treated via potassium permanganate (KMnO4) solution as a seeding layer with different concentrations (0.025, 0.050, 0.075, 0.1 M). A direct α‐MnO2 NWs growth (without pre‐treatment) was also performed on GF by hydrothermal method. The seeding layer effect on the NWs growth was elaborated to comprehend the process‐structure correlations by characterizing the resultant graphene foam/α‐MnO2 nanowires (GF/α‐MnO2 NWs) nanocomposites through Scanning Electron Microscopy (SEM), Raman Spectroscopy, X‐Ray Diffraction (XRD), and X‐Ray Photoelectron Spectroscopy (XPS). SEM, XRD, and Raman Spectroscopy revealed the successful acquisition of highly crystalline α‐MnO2 in one‐dimensional nanowire morphology on the high‐quality GF. Moreover, XPS results confirmed that all nanocomposites comprise α‐MnO2 and graphene without chemical degradation. Consequently, slight changes in solution concentration of seeding layers caused a noticeable alteration in the nanowire's structure, which could ensure effective control of nanocomposite properties without sacrificing the high purity of each component.

show abstract

Effect of Pr6O11 rare-earth oxide on the structural characteristics and optical parameters of polyvinyl alcohol film

Soliman,

Elkalashy,

Hessien

2024

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Comparative study on structural and optical features of undoped and Eu3+ doped Pr6O11 synthesized via sol-gel and flame spray pyrolysis

Cited by 5 publications

References 57 publications

Synthesis of zircon pigments from rice husk ash and their performance in ceramic glaze

Synthesis of zircon pigments from rice husk ash and their performance in ceramic glaze

Seeding Layer Effect on the Microstructure of Hydrothermally Grown α‐Manganese Dioxide Nanowires on Three‐Dimensional Graphene Foam

Effect of Pr6O11 rare-earth oxide on the structural characteristics and optical parameters of polyvinyl alcohol film

Contact Info

Product

Resources

About