Enhanced UV emission and supercapacitor behavior of Zn doped CeO2 quantum dots

Ponnar, M.; Sathya, M.; Pushpanathan, K.

doi:10.1016/j.cplett.2020.138087

Cited by 21 publications

(4 citation statements)

References 58 publications

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“…In the case of different morphologies of CeO 2 , the lattice parameter decreased in the order mixed phase > cube > rod. The expansion of the lattice depends on the reduction of Ce 4+ to form Ce 3+ and the number of oxygen vacancies. , The crystallite size of metal-doped CeO 2 samples was derived from the (111) peak. The crystallite sizes of CeO 2 , 11%Ni/CeO 2 , 9.4%Cu/CeO 2 , and 10.5%Zn/CeO 2 are 9.3, 9.0, 8.8, and 7.8 nm, respectively (Table ).…”

Section: Resultsmentioning

confidence: 97%

Zn-Doped CeO₂ Nanorods for Glycerol Carbonylation with CO₂

Kulal

Vetrivel

Krishna

et al. 2021

ACS Appl. Nano Mater.

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The chemical industry is facing a major challenge in the design of heterogeneous catalysts for CO2 activation and valorization. The modification of CeO2 nanorods with divalent transition metal ions (M = Zn, Cu, and Ni) resulted in the enhancement of oxygen vacancies, which improved the activation of CO2. The results revealed that based on the electronic properties of dopants and their coordination with the support, the nature of active sites can be tuned on the surface of the catalyst. Zn-doped CeO2 nanorods exhibited significantly higher activity for glycerol carbonate synthesis as Zn enhances the surface reducibility of Ce4+. 2-cyanopyridine (dehydrating agent) reacts with water to give 2-picolinamide, which influences the conversion of glycerol. The catalysts were characterized extensively by X-ray diffraction, transmission electron microscopy, N2-sorption, X-ray photoelectron spectroscopy, H2-temperature programmed reduction, Raman spectroscopy, and NH3–CO2 temperature programmed desorption techniques. Under optimized conditions; 90.4% glycerol conversion and 89.5% yield towards glycerol carbonate were achieved.

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Section: Resultsmentioning

confidence: 97%

Zn-Doped CeO₂ Nanorods for Glycerol Carbonylation with CO₂

Kulal

Vetrivel

Krishna

et al. 2021

ACS Appl. Nano Mater.

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“…The absorption edge of the sample gradually decreased from 650 to 600 nm, which may be attributed to the quantum size effect of the PLNPs. 47 Fig. S1 (ESI†) shows the energy band gap spectra corresponding to the UV-vis diffuse reflectance of PLNPs, SCN, and PLNP/SCN, and the corresponding band gaps calculated according to ( αhν ) 1/2 = B ( hν − E g ).…”

Section: Resultsmentioning

confidence: 99%

PLNPs/SCN heterojunction composites with a green afterglow for photocatalytic hydrogen production

Abulimiti,

Yan,

Niu

et al. 2024

New J. Chem.

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“…Ponnar et al. found that the nanoparticle size of Zn‐doped CeO 2 decreases to 4 from 12 nm of CeO 2 with the increase of the Zn dopant content [72] . For small‐sized RE‐based nanoparticles, spontaneous aggregation caused by the high surface energy needs to be solved.…”

Section: Morphology Controlmentioning

confidence: 99%

“…[70,71] Ponnar et al found that the nanoparticle size of Zn-doped CeO 2 decreases to 4 from 12 nm of CeO 2 with the increase of the Zn dopant content. [72] For small-sized RE-based nanoparticles, spontaneous aggregation caused by the high surface energy needs to be solved. The combination of smallsized RE-based nanoparticles and other electroactive materials is provided as one of the countermeasures.…”

Section: Zero-dimensional Nanostructuresmentioning

confidence: 99%

Rare Earth‐Based Nanomaterials for Supercapacitors: Preparation, Structure Engineering and Application

Zhou

2022

ChemSusChem

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Supercapacitors (SCs) can effectively alleviate problems such as energy shortage and serious greenhouse effect. The properties of electrode materials directly affect the performance of SCs. Rare earth (RE) is known as “modern industrial vitamins”, and their functional materials have been listed as key strategic materials. In the past few years, the number of scientific reports on RE‐based nanomaterials for SCs has increased rapidly, confirming that adding RE elements or compounds to the host electrode materials with various nanostructured morphologies can greatly enhance their electrochemical performance. Although RE‐based nanomaterials have made rapid progress in SCs, there are very few works providing a comprehensive survey of this field. In view of this, a comprehensive overview of RE‐based nanomaterials for SCs is provided here, including the preparation methods, nanostructure engineering, compounds, and composites, along with their capacitance performances. The structure–activity relationships are discussed and highlighted. Meanwhile, the future challenges and perspectives are also pointed out. This Review can not only provide guidance for the further development of SCs but also arouse great interest in RE‐based nanomaterials in other research fields such as electrocatalysis, photovoltaic cells, and lithium batteries.

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Enhanced UV emission and supercapacitor behavior of Zn doped CeO2 quantum dots

Cited by 21 publications

References 58 publications

Zn-Doped CeO₂ Nanorods for Glycerol Carbonylation with CO₂

Zn-Doped CeO₂ Nanorods for Glycerol Carbonylation with CO₂

PLNPs/SCN heterojunction composites with a green afterglow for photocatalytic hydrogen production

Rare Earth‐Based Nanomaterials for Supercapacitors: Preparation, Structure Engineering and Application

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Enhanced UV emission and supercapacitor behavior of Zn doped CeO2 quantum dots

Cited by 21 publications

References 58 publications

Zn-Doped CeO2 Nanorods for Glycerol Carbonylation with CO2

Zn-Doped CeO2 Nanorods for Glycerol Carbonylation with CO2

PLNPs/SCN heterojunction composites with a green afterglow for photocatalytic hydrogen production

Rare Earth‐Based Nanomaterials for Supercapacitors: Preparation, Structure Engineering and Application

Contact Info

Product

Resources

About

Zn-Doped CeO₂ Nanorods for Glycerol Carbonylation with CO₂

Zn-Doped CeO₂ Nanorods for Glycerol Carbonylation with CO₂