A facile hydrothermal synthesis of CeO2 nanocubes decorated ZnO nanostructures: optical and enhanced photocatalytic properties

Sahlevani, Saeed Farhang; Pandiyarajan, T.; Sanhueza, Felipe; Akbari‐Fakhrabadi, Ali; Mansilla, Héctor D.; Contreras, David; Mangalaraja, Ramalinga Viswanathan; Gracia-Pinilla, M.A.

doi:10.1007/s10854-019-01521-8

Cited by 6 publications

(1 citation statement)

References 35 publications

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“…By carefully selecting the synthesis method and meticulously optimizing experimental conditions, nanomaterials can be created, with precise control over their morphology; this includes the synthesis of nanocubes, nanorods, nanowires, nanooctahedra, and a variety of other shapes, as cited in the introduction [65][66][67][68][69][70]. Thus, synthesizing cerium oxide nanostructures has been successfully achieved through various methods, such as sol-gel, precipitation, electrochemical deposition, and hydrothermal processes [65].…”

Section: Main Synthetic Strategies For Shape-controlled Cerium Oxide ...mentioning

confidence: 99%

Tailoring Ceria-Based Nanocatalysts for Enhanced Performance in Steam Reforming Processes: Exploring Fundamentals and Morphological Modulations

Eduardo,

Mendonça,

Romano

et al. 2023

Hydrogen

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Ceria-based nanostructures, employed as catalytic supports for noble and non-noble metals, are well-known for their remarkable activity in steam-reforming reactions, exceptional resistance to degradation, and thermal stability. However, the catalytic activity and selectivity of such systems are strongly dependent on the size and shape of ceria, making it possible to tune the oxide properties, affecting catalyst design and performance. The rational manipulation of ceria nanostructures offers various features that directly impact steam-reforming transformations, including the possibility of tuning oxygen vacancies, redox properties, and oxygen storage capacity. Thus, the importance of shape control in ceria nanomaterials is highlighted herein, emphasizing how the surface atomic configurations (exposure of different facets) significantly impact their efficiency. Although the main focus of this review is to discuss how the catalyst design may affect the performance of hydrogen production, some other elemental studies are shown, when necessary, to exemplify the level of deepness (or not) that literature has reached. Thus, an overview of ceria properties and how the physicochemical control of nanostructures contributes to their tuning will be presented, as well as a discussion regarding elemental materials design and the most prominent synthetic procedures; then, we select some metals (Ni, Co, and Pt) to discuss the understanding of such aspects for the field. Finally, challenges and perspectives for nanoengineering catalysts based on shape-controlled ceria nanostructures will be described to possibly improve the performance of designed catalysts for steam-reforming reactions. Although there are other literature reviews on ceria-based catalysts for these reactions, they do not specifically focus on the influence of the size and shape of the oxide.

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Section: Main Synthetic Strategies For Shape-controlled Cerium Oxide ...mentioning

confidence: 99%

Tailoring Ceria-Based Nanocatalysts for Enhanced Performance in Steam Reforming Processes: Exploring Fundamentals and Morphological Modulations

Eduardo,

Mendonça,

Romano

et al. 2023

Hydrogen

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Pure and cerium‐doped zinc oxides: Hydrothermal synthesis and photocatalytic degradation of methylene blue under visible light irradiation

Đại

Lim

et al. 2020

J Chinese Chemical Soc

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Pristine and cerium-doped zinc oxides with a different dopant concentration between 1 and 5% were fabricated using the hydrothermal method. Prepared materials show direct bandgaps of comparable values. Cerium-doped materials show UV-Vis spectra with broad tails toward the visible light range. Pure zinc oxide displays the flower-like form, while cerium-doped materials possess rod-shaped morphologies. The materials were tested for the degradation performance of methylene blue under visible light irradiation. To elucidate the difference in their performance, further measurements and experiments were conducted. Overall, 3%-cerium doped zinc oxide shows the greatest photocatalytic performance. This is possibly attributed to its rod shape with good uniformity and to the enrichment of oxygen vacancies in its surface layers. Finally, trapping experiments reveal that positive holes and hydroxyl radicals were the predominant active species during the photocatalytic degradation process.

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ZIF-8-Induced CeO2/ZnO Nanobelts with Curled Edges Accelerating Cycling Efficiency of Ce3+/Ce4+ for Superior Photocatalytic Performance

Zhang

Guo

et al. 2022

J. Electron. Mater.

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A facile hydrothermal synthesis of CeO2 nanocubes decorated ZnO nanostructures: optical and enhanced photocatalytic properties

Cited by 6 publications

References 35 publications

Tailoring Ceria-Based Nanocatalysts for Enhanced Performance in Steam Reforming Processes: Exploring Fundamentals and Morphological Modulations

Tailoring Ceria-Based Nanocatalysts for Enhanced Performance in Steam Reforming Processes: Exploring Fundamentals and Morphological Modulations

Pure and cerium‐doped zinc oxides: Hydrothermal synthesis and photocatalytic degradation of methylene blue under visible light irradiation

ZIF-8-Induced CeO2/ZnO Nanobelts with Curled Edges Accelerating Cycling Efficiency of Ce3+/Ce4+ for Superior Photocatalytic Performance

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