Morphologies and magnetic properties of La-doped CeO2 nanoparticles by the solvothermal method in a low magnetic field

Yang, Zhigang; Zhu, Yin; Zhao, Zhijia; Yu, Jianbo; Li, Jingyun; Ren, Zhongming; Yu, Gang

doi:10.1016/j.matchemphys.2019.122148

Cited by 17 publications

(16 citation statements)

References 33 publications

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“…Additionally, morphology changes in these nanocrystals can affect their magnetic properties. This phenomenon has been confirmed by our research for Co-or La-doped CeO 2 nanoparticles prepared in a magnetic field [21,22]. Meanwhile, it was reported that the introduction of Fe into CeO 2 nanoparticles led to weak ferromagnetic behavior, and that increasing the Fe concentration promotes increase in saturated magnetization [23].…”

Section: Introductionsupporting

confidence: 83%

Magnetic field-assisted solvothermal synthesis and the magnetic properties of Fe-doped CeO2 nanoparticles

Yang

Zhu

et al. 2020

Journal of Asian Ceramic Societies

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Fe-doped CeO 2 powders were prepared by the magnetic field-assisted solvothernal synthesis method. These powders were characterized using X-ray diffraction (XRD), scan electron microscopy (SEM), transmission electron microscopy (TEM) and magnetization measurement as a function of the field. The results showed that in the nanoparticles prepared without a magnetic field, increasing the Fe doping concentration caused morphological evolution. In pure CeO 2 , the morphology showed a hollow sphere-like structure. In doped CeO 2 with 5 wt% Fe, the morphology showed a loose sphere-like structure which was self-assembled by many small, round, sheet-like grains. In doped CeO 2 with 30 wt% Fe, the morphology showed a cross flowerlike structure composed of many plate-like grains. When a magnetic field of 0.8 T was introduced, the sphere-like structure became more looser at a 5 wt% Fe concentration and a larger number of nanowires were formed. At a 30 wt% Fe concentration, cluster flower-like grains composed of many regular plate-like grains were observed. Additionally, the Fe-doped CeO 2 nanoparticles showed weak ferromagnetism behavior at room temperature. Increasing the Fe doping concentration improved the ferromagnetism of nanoparticles. At a 30 wt% Fe doping concentration, applying a magnetic field of 0.8 T promoted the improvement of ferromagnetism.

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Section: Introductionsupporting

confidence: 83%

Magnetic field-assisted solvothermal synthesis and the magnetic properties of Fe-doped CeO2 nanoparticles

Yang

Zhu

et al. 2020

Journal of Asian Ceramic Societies

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“…Mixtures of additives have also been investigated, such as polyvinylpyrrolidone, HCl, KClO 3 and N,N-dimethylformamide [132], octadecylamine, ethanol and ethylenediamine [133] or 6-amino hexanoic acid and tert-butylamine [134], and non-aqueous solvents have been studied, such as ethylene glycol [135][136][137][138], ethanol [139] and triethylene glycol [140]. In some cases, the choice of combination of additive and solvent has led to some striking crystal morphologies; for example, the combination of epigallocatechin-3-gallate in ethanol as a solvent allowed the formation of hierarchical nanostructures of Eu-containing CeO 2 with flower-like shapes of intergrown plates, microns in thickness, Figure 17 [141].…”

Section: Rare Earth-substituted Ceriamentioning

confidence: 99%

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

et al. 2021

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We review the solution-based synthesis routes to cerium oxide materials where one or more elements are included in place of a proportion of the cerium, i.e., substitution of cerium is performed. The focus is on the solvothermal method, where reagents are heated above the boiling point of the solvent to induce crystallisation directly from the solution. This yields unusual compositions with crystal morphology often on the nanoscale. Chemical elements from all parts of the periodic table are considered, from transition metals to main group elements and the rare earths, including isovalent and aliovalent cations, and surveyed using the literature published in the past ten years. We illustrate the versatility of this synthesis method to allow the formation of functional materials with applications in contemporary applications such as heterogeneous catalysis, electrodes for solid oxide fuel cells, photocatalysis, luminescence and biomedicine. We pick out emerging trends towards control of crystal habit by use of non-aqueous solvents and solution additives and identify challenges still remaining, including in detailed structural characterisation, the understanding of crystallisation mechanisms and the scale-up of synthesis.

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“…Recently, the solvothermal method, a microwave-mediated end-capping of alcohols such as ethylene glycol, could synthesize CeO 2 -NPs co-doped with Co 2+ and La 3+ , which presented a certain weak magnetism, different shapes, and controllable sizes. 68,69 The study on the application of magnetic nanoparticles to the drug delivery system started early. 70 Alzheimer's disease model has witnessed the application of magnetic CeO 2 -NPs constitution to the magnetic separation of amyloid-beta (A-beta) peptides; Moreover, the magnetic CeO 2 -NPs constitution could enhance the magnetic resonance imaging (MRI) in the treatment for cerebral hemorrhage.…”

Section: Alternate Methods Of Synthesismentioning

confidence: 99%

<p>The Advances of Ceria Nanoparticles for Biomedical Applications in Orthopaedics</p>

Li¹,

Xia²,

S³

et al. 2020

IJN

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The ongoing biomedical nanotechnology has intrigued increasingly intense interests in cerium oxide nanoparticles, ceria nanoparticles or nano-ceria (CeO 2-NPs). Their remarkable vacancy-oxygen defect (VO) facilitates the redox process and catalytic activity. The verification has illustrated that CeO 2-NPs, a nanozyme based on inorganic nanoparticles, can achieve the anti-inflammatory effect, cancer resistance, and angiogenesis. Also, they can well complement other materials in tissue engineering (TE). Pertinent to the properties of CeO 2-NPs and the pragmatic biosynthesis methods, this review will emphasize the recent application of CeO 2-NPs to orthopedic biomedicine, in particular, the bone tissue engineering (BTE). The presentation, assessment, and outlook of the orthopedic potential and shortcomings of CeO 2-NPs in this review expect to provide reference values for the future research and development of therapeutic agents based on CeO 2-NPs.

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Morphologies and magnetic properties of La-doped CeO2 nanoparticles by the solvothermal method in a low magnetic field

Cited by 17 publications

References 33 publications

Magnetic field-assisted solvothermal synthesis and the magnetic properties of Fe-doped CeO2 nanoparticles

Magnetic field-assisted solvothermal synthesis and the magnetic properties of Fe-doped CeO2 nanoparticles

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

<p>The Advances of Ceria Nanoparticles for Biomedical Applications in Orthopaedics</p>

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