Raman and FTIR spectra of CeO 2 and Gd 2 O 3 in iron phosphate glasses

Lai, Yuanming; Liang, Xiaojuan; Yang, Shiyuan; Liu, Pei; Zeng, Yiming; Hu, Changyi

doi:10.1016/j.jallcom.2014.08.051

Cited by 57 publications

(17 citation statements)

References 25 publications

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“…Higher vibrational frequencies of peaks around 1100 cm −1 for glasses 7Ga and 7Ce suggest greater packing density . Moreover, the intensity of these peaks increases with an increase in dopant level . Glasses doped with Ga show shifts of peaks around 900 cm −1 into a higher wavenumber range with increasing gallium content, whereas the same peak does not change its position with an increase in Ce content.…”

Section: Resultsmentioning

confidence: 94%

“…[47] Moreover, the intensity of these peaks increases with an increase in dopant level. [56] Glasses doped with Ga show shifts of peaks around 900 cm À1 into a higher wavenumber range with increasing gallium content, whereas the same peak does not change its position with an increase in Ce content. However, the intensity of these peaks increases suggesting high asymmetric stretching modes of P─O─P.…”

Section: Ftirmentioning

confidence: 93%

“…[56] Incorporation of Ce into a PG network causes an increase in the glass cross-linking density and chemical durability. [56] Only nominal decreases in degradation kinetics due to increased levels of Ce could suggest an optimal level of cerium oxide, beyond which it does not disturb the PG structure. Cerium oxide can exist in two oxidation states in the glass network, namely as Ce 4þ or/and Ce 3þ .…”

Section: Degradation Testmentioning

confidence: 99%

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Gallium‐ and Cerium‐Doped Phosphate Glasses with Antibacterial Properties for Medical Applications

et al. 2020

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Novel cerium‐ (Ce) and gallium (Ga)‐doped phosphate glasses (PGs) are successfully obtained by the peroxidation method. The new glasses are characterized using Fourier‐transform infrared spectroscopy (FTIR), Raman spectroscopy, X‐ray diffraction, inductively coupled plasma‐optical emission spectroscopy (ICP‐OES), and pH measurements. A strong correlation between glass properties and their composition is found. The incorporation of Ga/Ce in the glass structure is confirmed by peak shifts in Raman and FTIR spectra. Degradation tests conducted in water confirm the soluble character of the PGs and reveal the influence of Ga and Ce on the degradation rate. Ga‐doped glasses are found to be less soluble than Ce‐doped ones (43%, 33%, 21%, and 16% of dry mass remained after 7 weeks for 7Ga, 5Ga, 5Ce, and 7Ce, respectively). Biological evaluation using ST‐2 cells shows adequate cell response with a cell viability of 80% measured using the indirect contact method depending on the composition. The cell viability decreases with an increase in Ga content and increases with Ce content. The antibacterial character of Ga/Ce‐doped PGs is confirmed by turbidity measurements against Escherichia coli and Staphylococcus carnosus. The novel Ce/Ga‐doped PGs exhibiting antibacterial properties and biocompatibility reported here are interesting for tissue engineering and wound healing applications.

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Section: Resultsmentioning

confidence: 94%

Section: Ftirmentioning

confidence: 93%

Section: Degradation Testmentioning

confidence: 99%

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Gallium‐ and Cerium‐Doped Phosphate Glasses with Antibacterial Properties for Medical Applications

et al. 2020

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“…Figure shows the Raman spectra of the CeO 2 , PANI–CeO 2 , MBT–PANI–CeO 2 , and PAA–MBT–PANI–CeO 2 pigments. The Raman active F 2 g mode of the CeO 2 nanoparticles was observed at the peak at 459 cm −1 . The characteristic peaks of PANI [as shown in Figure (b)] were at 1241, 1399, and 1547 cm −1 and were due to the CH bending of the quinoid ring and CN and CN stretching vibrations, respectively .…”

Section: Resultsmentioning

confidence: 98%

Epoxy coating with self‐healing capability based on a 2‐mercaptobenzothiazole‐loaded CeO₂ nanocontainer

Hosseini

Aboutalebi

2018

J of Applied Polymer Sci

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In this study, we demonstrated a facile approach for the synthesis of nanocontainers using the encapsulation of a 2‐mercaptobenzothiazole (MBT) inhibitor; these nanocontainers were capable of responsively releasing a corrosion inhibitor and of self‐healing performances. The anticorrosive performance of the CeO2 nanocontainers was investigated with electrochemical impedance spectroscopy (EIS) measurement in a saline electrolyte via the incorporation of different weight percentages (0.5, 1, and 2 wt %) of synthesized nanocontainer in epoxy (EP) resin. The EIS results show that the loading of 1 wt % CeO2 nanocontainer containing MBT inhibitor in the epoxy (EP) coating [EP/NC MBT–CeO2 (1%)] provided the highest Rcoat, the lowest constant phase element of coating, and the optimum release of MBT at different operating pHs. The highest coating resistance Rcoat values of this coating (7.81 × 107 Ω cm2) were about 12 and 8573 times greater than those considered for EP–CeO2 and EP coatings, respectively. Different releases of the MBT inhibitor were detected at various pHs. We found that the coating operating in acidic media exhibited a better self‐healing performance. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47297.

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“…MoO 3 , 58 Cs 2 O, 59,60 and ZrO 2 . Li 61 and Lai62 et al reported that 6-10 mol.% (22-25 wt%) lanthanide (La, Nd, Sm, Gd) oxides can be dissolved in iron phosphate glasses, without significantly affecting the corrosion resistance of the glass, and homogeneous iron phosphate glasses with up to ~30 wt% MoO 3 have been reported 58. …”

mentioning

confidence: 99%

Iron polyphosphate glasses for waste immobilization

Brow

Kim

Reis³

2019

Int J of Appl Glass Sci

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Iron polyphosphate glasses resist attack by water, can dissolve large concentrations of species that are otherwise insoluble in borosilicate glass melts, and can be processed at relatively low temperatures (1000‐1200°C), and so are viable hosts for vitrifying hazardous and radioactive wastes. The properties of iron polyphosphate glasses depend on the distributions of phosphate anions and the nature of the bonds between those anions and various metal polyhedra, and quantitative information can be obtained about those structures using a variety of spectroscopic, diffraction, and chromatographic techniques. This structural information helps explain compositional trends in properties, including dissolution rates, electrical conductivity, thermal properties and crystallization tendency. Studies of waste forms made with low activity and high level wastes are reviewed and related back to an understanding of the structures and properties of simpler iron polyphosphate glasses.

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Raman and FTIR spectra of CeO 2 and Gd 2 O 3 in iron phosphate glasses

Cited by 57 publications

References 25 publications

Gallium‐ and Cerium‐Doped Phosphate Glasses with Antibacterial Properties for Medical Applications

Gallium‐ and Cerium‐Doped Phosphate Glasses with Antibacterial Properties for Medical Applications

Epoxy coating with self‐healing capability based on a 2‐mercaptobenzothiazole‐loaded CeO₂ nanocontainer

Iron polyphosphate glasses for waste immobilization

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Raman and FTIR spectra of CeO 2 and Gd 2 O 3 in iron phosphate glasses

Cited by 57 publications

References 25 publications

Gallium‐ and Cerium‐Doped Phosphate Glasses with Antibacterial Properties for Medical Applications

Gallium‐ and Cerium‐Doped Phosphate Glasses with Antibacterial Properties for Medical Applications

Epoxy coating with self‐healing capability based on a 2‐mercaptobenzothiazole‐loaded CeO2 nanocontainer

Iron polyphosphate glasses for waste immobilization

Contact Info

Product

Resources

About

Epoxy coating with self‐healing capability based on a 2‐mercaptobenzothiazole‐loaded CeO₂ nanocontainer