Structural characterization and dielectric properties of ceria–titania nanocomposites in low ceria region

Ahmad, Tokeer; Shahazad, Mohd; Ubaidullah, Mohd; Ahmed, Jahangeer; Khan, Aslam; El‐Toni, Ahmed Mohamed

doi:10.1088/2053-1591/aa9c51

Cited by 9 publications

(6 citation statements)

References 46 publications

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“…It has been revealed that the high-frequency dielectric constant value of defective ceria remains stable from room temperature up to 350 °C. [66][67][68] Such results can be attributed to localized charge carriers that cannot hop at low temperatures. These highfrequency 3 0 values at 50-150 °C are ∼30-35, similar to the literature value of doped ceria 69,70 and slightly higher than that of undoped ceria ∼23-25.…”

Section: Resultsmentioning

confidence: 99%

Non-classical electrostriction in calcium-doped cerium oxide ceramics

Kabir,

Tinti,

Santucci

et al. 2024

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 99%

Non-classical electrostriction in calcium-doped cerium oxide ceramics

Kabir,

Tinti,

Santucci

et al. 2024

J. Mater. Chem. A

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“…Some focus is also bounded by surface reactivity analysis or through TEM. The elucidation of this area is must to simplify instrumentation acquaintance [128,129]. The powder XRD patterns of the CeO 2 nanorods, nanocubes and nanopolyhedra are of pure cubic phase shows its fluorite structure with lattice constants of 5.414(3), 5.436(3), and 5.405(3) Å, respectively (Figure 9a).…”

Section: Synthesis and Characterization Of Ceria Nanoparticlesmentioning

confidence: 99%

Ceria as an Efficient Nanocatalyst for Organic Transformations

Naaz¹,

Farooq²,

Ahmad³

2019

Nanocatalysts

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Valuable chemicals, fuels and pharmaceuticals obtained by the transformation of raw materials have fascinated a lot of researchers in past few decades. However, to reduce problems related to these transformations different green, sustainable and economic techniques have been developed to carry out such organic transformations. Development of nanostructured catalysts has been preferred to accomplish heterogeneous catalytic organic transformations because of greater number of surface-active sites for catalytic processes, high catalyst recovery rate, environment friendly nature and their ease of synthesis. Besides the advances in nanocatalysis, certain challenges including not well-defined morphologies due to loss of control over it and loss of catalytic activity during operation need to be addressed. Ceria is actively investigated in field of catalysis. As a ubiquitous component in catalytic system, its inception is like an irreplaceable component in organic transformations. In this chapter, we appropriately reported various fabricating approaches to synthesize Cerium and CeO 2-rooted nanoparticles and cerium nanoparticles supported on various support materials, accompanied with multimetallic schemes that show notable contribution to the field of catalysis. This comprehensive chapter will provide an improved understanding of nanostructured CeO 2 and will provide deeper insight in the catalysis of Ce-based nanostructured materials and further widen their ambit of applications.

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“…Therefore, exploiting nanocatalysts to carry out HER and CO 2 RR is instrumental to a scalable production of H 2 and carbon-based value-added chemicals. There are numerous fabrication techniques that have been explored for designing the nanostructures of advanced functional materials, such as the reverse micellar system [19][20][21][22], the polymeric precursor route [23], the hydrothermal/solvothermal method [24], etc.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Transition Metal Phosphide Nanocatalysts for H2 Evolution and CO2 Reduction

Shaheen,

Ali,

Mir

et al. 2023

Catalysts

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Green hydrogen energy has captivated researchers and is regarded as a feasible option for future energy-related aspirations. The emerging awareness of renewable energy-driven hydrogen generation and carbon dioxide reduction calls for the use of unconventional schematic tools in the fabrication of nanocatalyst systems. Transition metal phosphides are state-of-art, cost-effective, noble-metal-free materials that have been comprehensively examined for sustainable energy-driven applications. Recent reports on these advanced functional materials have cemented their candidature as high-performance catalytic systems for hydrogen production and for carbon dioxide conversion into value-added chemical feedstock. Bimetallic NiCoP (238.2 mmol g−1 h−1) exhibits top-notch catalytic competence toward photocatalytic HER that reveals the energy-driven application of a pristine class of TMPs, whereas heterostructured Ni2P/CdS was found to be fit for photochemical CO2 reduction, as well as for HER. On the other hand, pristine Ni2P was recently ascertained as an efficient electrocatalytic system for HER and CO2RR applications. A wide array of physicochemical modulations, such as compositional and structural engineering, defect generation, and facet control, have been used for improving the catalytic efficiency of transition metal phosphide nanostructures. In this review, we succinctly discuss the proficiency of transition metal phosphides in green hydrogen production and carbon dioxide conversion via photochemical and electrochemical pathways. We detail the significance of their structural properties and brief the readers about the synthetic advancements without deviating from our goal of summarizing the recent achievements in energy-driven applications.

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Structural characterization and dielectric properties of ceria–titania nanocomposites in low ceria region

Cited by 9 publications

References 46 publications

Non-classical electrostriction in calcium-doped cerium oxide ceramics

Non-classical electrostriction in calcium-doped cerium oxide ceramics

Ceria as an Efficient Nanocatalyst for Organic Transformations

Recent Advances in Transition Metal Phosphide Nanocatalysts for H2 Evolution and CO2 Reduction

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