Synthesis and photocatalytic performance of yttrium-doped CeO2 with a hollow sphere structure

Xu, Bin; Zhang, Qitao; Yuán, Sàisài; Liu, Sixiao; Zhang, Ming; Ohno, Teruhisa

doi:10.1016/j.cattod.2016.06.049

Cited by 59 publications

(11 citation statements)

References 46 publications

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“…Photoluminescence is a property that has commonly been used to characterise rare earth-substituted ceria materials [111,114,117,144,[155][156][157][158][159][160], while Eu-substituted materials are of particular interest for their luminescent properties. Eu-CeO 2 materials prepared by solvothermal routes have provided some useful materials: this includes in applications such as solar cells, Figure 19 [116], and detection of fingerprints [141].…”

Section: Rare Earth-substituted Ceriamentioning

confidence: 99%

“…In a similar manner, Er-CeO 2 was loaded onto graphene oxide directly via in situ hydrothermal crystallisation, and then in a second hydrothermal step, CuO was co-loaded; these composite materials showed enhanced photocatalytic reduction of CO 2 to methanol compared to the individual components [163]. Xu et al used polystyrene microspheres as templates to produce hollow microspheres constructed from agglomerated crystallites of Y-substituted CeO 2 : these showed enhanced activity for the photocatalytic decomposition of acetaldehyde [158].…”

Section: Multi-element Substitutionsmentioning

confidence: 99%

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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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Section: Rare Earth-substituted Ceriamentioning

confidence: 99%

Section: Multi-element Substitutionsmentioning

confidence: 99%

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

et al. 2021

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“…An F 2g mode confirms the fluorite cubic structure of the prepared samples and also signifies the symmetrical stretching vibration of the CeO 8 vibrational unit. A broad and asymmetric mode at * 460 cm -1 is red shifted as compared to bulk form owing to oxygen defects, phonon confinement, size distribution, deviation in phonon relaxation and strain present in the sample (Xu et al 2017;Lopez et al 2015). The other modes at * 546 and 612 cm -1 are due to oxygen vacancies (intrinsic and extrinsic).…”

Section: Resultsmentioning

confidence: 94%

Fabricated CeO2 nanopowders as a novel sensing platform for advanced forensic, electrochemical and photocatalytic applications

Rohini

Nagabhushana

Darshan³

et al. 2017

Appl Nanosci

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In Forensic investigation, identification of various types of ridge details are essential in order to fix the criminals associated in various crimes. Even though several methods and labeling agents are available to visualize latent finger prints (LFPs) there is still simple, accurate, cost-effective, and non-destructive tool is required. In the present work, CeO 2 nanopowders (NPs) are prepared via simple solution combustion route using Tamarindus indica fruit extract as a fuel. The optimized NPs are utilized for visualization of LFPs on various surfaces by powder dusting method. Results revealed that visualized LFPs exhibit Level 3 features such as pores and ridge contours under normal light with high sensitivity and without background hindrance. The photometric characteristics of the prepared samples exhibit blue color emission and highly useful in warm light emitting diodes. The photocatalytic studies were carried out with different Methylene blue (MB) dye concentration and pH values. The obtained results reveal that the CeO 2 NPs exhibits an excellent catalytic properties which can act as a good catalytic reagent. The findings demonstrate that the prepared NPs are quite useful as a labeling agent for visualization of LFPs, efficient catalysts for dye degradation as well as solid-state lighting applications.

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“…Unfortunately, CeO 2 with indirect band gap energy (3.2 eV) is strictly limited in the photocatalytic system of the UV-light region. Hence, nonmetal or metal ions such as S, N, P, Er, Fe, Sm, and Y have been doped in CeO 2 to extend light harvesting to the visible-light region, leading to enhanced photocatalytic activity [34,35,36,37,38,39,40]. Apart from a doping strategy, noble metals such as Au and Ag loaded on CeO 2 have been confirmed to present much better photocatalytic activity [41].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Visible-Light Photocatalytic Activity of Ag QDs Anchored on CeO2 Nanosheets with a Carbon Coating

Zheng

Chen

et al. 2019

Nanomaterials

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Ag quantum dots (QDs) anchored on CeO2 nanosheets with a carbon coating (Ag/CeO2@C) (composites) were prepared via an in situ reduction approach for the photocatalytic degradation of Cr(VI) and tetracycline hydrochloride (TCH) in the visible-light region. The photocatalytic activity of Ag/CeO2@C was greatly affected by carbon content, Ag-doping content, Cr(VI) concentration, pH value, and inorganic ions. Enhanced photocatalytic activity was obtained by Ag/CeO2@C (compared to CeO2 and CeO2@C), of which 3-Ag/CeO2@C-2 with an Ag-doping content of 5.41% presented the best removal efficiency and the most superior stability after five cycles. ·O2− and ·OH radicals were crucial for the photocatalytic capacity of 3-Ag/CeO2@C-2. The combined effect of the surface plasma resonance (SPR) of Ag QDs, an electron trapper of carbon shells, and the redox activity of the Ce(III)/Ce(IV) coupling induced efficient charge transfer and separation, suppressing the recombination of electron–hole pairs.

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Synthesis and photocatalytic performance of yttrium-doped CeO2 with a hollow sphere structure

Cited by 59 publications

References 46 publications

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

Fabricated CeO2 nanopowders as a novel sensing platform for advanced forensic, electrochemical and photocatalytic applications

Enhanced Visible-Light Photocatalytic Activity of Ag QDs Anchored on CeO2 Nanosheets with a Carbon Coating

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