Synthesis, Characterization, and Application of 1-D Cerium Oxide Nanomaterials: A Review

Lin, Kuen‐Song; Chowdhury, Sujan

doi:10.3390/ijms11093226

Cited by 142 publications

(64 citation statements)

References 73 publications

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“…At room temperature, the reaction of cerium(III) nitrate under basic conditions with ammonia results in the precipitation of gelatinous hydrous cerium(IV) oxide [7]. When ammonia is added to a cerium(III) precursor solution, immediate precipitation of Ce(OH) 3 is observed because of the low solubility constant of this compound (K sp = 7 × 10 −21 ) [13].…”

Section: Tentative Mechanism Of Particle Formationmentioning

confidence: 99%

“…Most of the advanced applications of CeO 2 generally appear in the nanosized regime, in which many physical properties are strongly size dependent and show significant quantum size effects. Many new potential applications for nanometric ceria-including solar cells, nanolasers, and other highly functional and effective devices-are under current discussion [7]. The synthesis of nanosized ceria particles have been achieved by many different methods.…”

Section: Introductionmentioning

confidence: 99%

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Surfactant-assisted formation of organophilic CeO2 nanoparticles

Tunusoğlu

Muñoz‐Espí

Akbey

et al. 2012

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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a b s t r a c tWe report a simple one-pot method to prepare organically functionalized CeO 2 nanoparticles by controlled chemical precipitation. The particles were nucleated by mixing aqueous solutions of Ce(NO 3 ) 3 ·6H 2 O and ammonia at room temperature. Different small organic molecules were chosen as capping agents and injected into the reaction medium at the beginning of the synthesis: 3-(mercaptopropyl) trimethoxy silane (MPS), hexadecyltrimethyl ammonium bromide (CTAB), 3-mercapto propionic acid (3-MPA), and thioglycolic acid (TGA). The resulting nanocrystals were quasi-spherical and had a narrow mean size distribution with an average size smaller than 10 nm. Dynamic nuclear polarization enhanced NMR (DNP-NMR) and FTIR measurements suggested a chemical grafting of the surfactant and a homogeneous surface modification. The colloidal stabilities were characterized by dynamic light scattering and zeta potential measurements. The stabilization by aliphatic groups was tested with a frequently used hydrophobic monomer, methyl methacrylate. According to the results, CTAB is the most effective of the used stabilizing surfactant. The mechanism of formation of the organophilic CeO 2 nanoparticles is discussed.

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Section: Tentative Mechanism Of Particle Formationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Surfactant-assisted formation of organophilic CeO2 nanoparticles

Tunusoğlu

Muñoz‐Espí

Akbey

et al. 2012

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Lin and Chowdhury [17] demonstrated the application of a well-known hydrothermal synthesis technique at a higher concentration of sodium hydroxide (pH >10). This method was conducted for 24 hours and successfully produced 1-D nanorod structure with 20-40 nm and 200-300 nm of diameter and length, respectively.…”

Section: +mentioning

confidence: 99%

Room Temperature Synthesis of Ceria by the Assisted of Cationic Surfactant and Aging Time

2018

MJAS

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This paper presents the synthesis of rare earth cerium(IV) oxide (ceria) via simple precipitation method under room temperature. The two aims of this research are to: (i) synthesise a ceria-based material using simple process and chemicals and (ii) modify the ceria-based material with environmentally friendly elements. In this study, cerium nitrate hexahydrate and sodium hydroxide were utilised as the precursor and precipitant, respectively, to attain desired crystallite size and shape, at a fixed reaction pH of 12. Besides that, common cationic surfactant, cetyl-tri-methyl-ammonium bromide (CTAB), was used to enhance ceria-based material's coveted properties. Furthermore, addition of surfactant and aging time (30 minutes, and 5, 10, 20, and 30 days) were also examined. Findings showed that as aging time increased, crystallite size decreased and production of large agglomerations were not observed. Then, optimum aging time was applied for synthesis of ceria material and modified ceria material, FeCeO 2 /TiO 2 , via impregnation method. These materials were subjected to X-ray diffraction (XRD), CO 2 -TemperatureProgrammed Desorption (CO 2 -TPD), and Field Emission Scanning Electron Microscopy (FESEM) to investigate the mutual effect of surfactant addition and aging time.Keywords: cationic, ceria, crystallite, precipitating, surfactant Abstrak Kajian ini menggambarkan sintesis salah satu unsur nadir bumi iaitu cerium(IV) oksida (ceria), melalui kaedah pemendakan pada suhu bilik. Matlamat kajian ini ialah: (i) sintesis bahan berasaskan ceria menggunakan proses dan bahan kimia yang mudah dan (ii) mengubahsuai bahan berasaskan ceria dengan penambahan unsur-unsur mesra alam. Dalam kajian ini, cerium nitrat heksahidrat dan natrium hidroksida telah digunakan sebagai bahan pemula dan agen pemendakan, supaya saiz dan bentuk yang dikehendaki dapat diperolehi pada pH yang telah ditetapkan iaitu pH 12. Selain itu, bahan tipikal surfaktan kation, cetil-tri-metilammonium bromida (CTAB), telah digunakan untuk memudahkan penghasilan bahan berasakan ceria dengan sifat-sifat yang dikehendaki. Di samping itu, penambahan surfaktan dan kadar masa penuaan (30 minit, dan 5, 10, 20, dan 30 hari) turut dikaji. Hasil penemuan menunjukkan bahawa, apabila kadar masa penuaan ditingkatkan, saiz kristal berkurangan dan penghasilan gumpalan besar tidak ditemui. Justeru, kadar masa penuaan optima dipilih untuk sintesis bahan ceria dan bahan ceria yang diubah suai, Fe-CeO 2 /TiO 2 , melalui kaedah impregnasi. Seterusnya, bahan-bahan ini dianalisis melalui sistem pembelauan sinar-X (XRD), program penjerap bersuhu-CO 2 (CO 2 -TPD), dan mikroskop elektron pengimbas pancaran medan (FESEM) untuk mengkaji kesan penambahan surfaktan dan kadar masa penuaan.Kata kunci: kation, ceria, kristal, pemendakan, surfaktan ISSN -2506Nor Aqilah et al: ROOM TEMPERATURE SYNTHESIS OF CERIA BY THE ASSISTED OF CATIONIC SURFACTANT AND AGING TIME 405 Introduction Rare earth elements are an interesting prospect for research due to its potential of application in ma...

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“…and other authors reported the similar red shift in wavelength with the increase in Ce 3+ concentration. [52][53][54] The band gap of undoped and europium doped CeO2 samples are calculated from UV-Vis spectra and listed in Table 2.…”

Section: Dopant Ion Concentration By Txrfmentioning

confidence: 99%