Synthesis of monodispersed nanosized CeO2 by hydrolysis of the cerium complex precursor

Liu, Kang-Qiang; Zhong, Ming

doi:10.1016/s1002-0721(09)60178-2

Cited by 18 publications

(8 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The difference of the two absorption bands (approx. 170 cm -1 ) is very close to 180 cm -1 , a typical value for bidentate nitrato chelating groups [29].…”

Section: Characterization Of the Initial Compounds And Final Productsupporting

confidence: 53%

“…Furthermore, the FTIR analysis of Ce−TEA−2 (Fig. 2 and [29]. The difference of the two absorption bands (approx.…”

Section: Characterization Of the Initial Compounds And Final Productmentioning

confidence: 98%

“…2). The presence of strong diffraction peaks at low angles (2θ<10º) can be attributed to a Ce(IV)−TEA compound [29]. The lack of absorption bands related to OH groups in as-grown Ce−TEA−1 compound indicates that TEA is deprotonated.…”

Section: Characterization Of the Initial Compounds And Final Productmentioning

confidence: 99%

See 2 more Smart Citations

Thermal decomposition of cerium triethanolamine complexes

et al. 2020

View full text Add to dashboard Cite

Thermal decomposition of cerium triethanolamine complexes to cerium oxide, CeO2, in inert and oxidative atmospheres has been investigated by thermogravimetry combined with infrared evolved gas analysis; the main volatiles formed during thermal decomposition have been identified. Intermediates and final products have been characterized by infrared spectroscopy, X-Ray diffraction and elemental analysis. Several overlapping steps occurring along decomposition path have been identified and plausible reaction pathways are presented. It will be shown that decomposition starts around 200ºC independently of the atmosphere, but the endset temperature depends on the gas composition: the more inert the atmosphere the higher the endset temperature. Finally, the effect of the temperature and amount of triethanolamine used during compound synthesis is discussed.

show abstract

“…The difference of the two absorption bands (approx. 170 cm -1 ) is very close to 180 cm -1 , a typical value for bidentate nitrato chelating groups [29].…”

Section: Characterization Of the Initial Compounds And Final Productsupporting

confidence: 53%

“…Furthermore, the FTIR analysis of Ce−TEA−2 (Fig. 2 and [29]. The difference of the two absorption bands (approx.…”

Section: Characterization Of the Initial Compounds And Final Productmentioning

confidence: 98%

See 1 more Smart Citation

Thermal decomposition of cerium triethanolamine complexes

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The crystalline structure consists of a cubic fluorite structure (Fm3m) with a cell parameter of 5.41 Å at room temperature and presents a high dielectric constant ɛ = 26, almost of silicon, that it makes use in spintronic devices with silicon microelectronic devices [9,10]. Synthesis of CeO 2 nanoparticles comprise various methods as: solvothermal [2,11,12], sol gel [2,13,14], sonochemical [2,15], hydrolysis [2,16], hydrothermal [2,17,18], precipitation [2,19] and reverse micelles [2,20]. The dual oxidation state mentioned above means that these nanoparticles have oxygen vacancies or defects [19].…”

Section: Introductionmentioning

confidence: 99%

Prototyping a Gas Sensors Using CeO2 as a Matrix or Dopant in Oxide Semiconductor Systems

Pîslaru‐Dănescu¹,

Ţelipan²,

Ion³

et al. 2019

Cerium Oxide - Applications and Attributes

View full text Add to dashboard Cite

In this chapter, two important aspects of using CeO 2 in the field of gas sensors are presented. Firstly, for CO 2 detection in the range of 0-5000 ppm, a binary semiconductor oxides CeO 2 -Y 2 O 3 was used. Secondly, as a dopants, in oxide semiconductor systems, used to detect the NO 2 . In this case, CeO 2 is used as a dopant in hybride composite, consisting of reduced graphene oxide/ZnO, in order to increase the sensibility in NO 2 detection at low concentration in the range of 0-10 ppm. The structural and morphological characterization of sensitive materials by X-ray diffraction, SEM, adsorption desorption isotherms, thermal analysis and RAMAN spectroscopy are presented. Also, the sensing element of the sensor that detects the NO 2 is achieved by depositing the nanocomposite material on the interdigital grid. The electronic conditioning signal from the sensing element is achieved by using a Wheatstone bridge together with an instrumentation operational amplifier.

show abstract

“…The unique properties (enhanced catalytic activity, enzyme-mimetic ability) of cerium oxide are attributed usually to its nanosized forms -nano-ceria. Various sophisticated procedures have been used to prepare the catalytically active forms of nano-ceria, including sol-gel methods (ANSARI et al, 2008), thermolysis and homogeneous hydrolysis (LIU and ZHONG, 2010). It was shown that conventional precipitation/calcination methods may be also adopted to produce a highly reactive material capable to destroy toxic organophosphates; a simple and easily scalable procedure involves the precipitation of sparingly soluble cerium carbonate (either with an ammonium bicarbonate solution or with a gaseous mixture of CO 2 and NH 3 ) with subsequent calcination in the presence of oxygen (air) (JANOŠ et al, 1989;JANOS et al, 2014b).…”

Section: Introductionmentioning

confidence: 99%

Some Environmentally Relevant Reactions of Cerium Oxide

Janoš¹,

Ederer²,

Došek³

2014

Nova Biotechnologica Et Chimica

View full text Add to dashboard Cite

Reactive forms of cerium oxide were prepared by a thermal decomposition of various precursors, namely carbonates, oxalates and citrates, commercially available nanocrystalline cerium oxide (nanoceria) was involved in the study for comparison. Scanning electron microscopy (SEM) and x-ray diffraction analysis (XRD) were used to examine the morphology and crystallinity of the samples, respectively, whereas the Brunauer-Emmett-Teller (BET) method of nitrogen adsorption was used to determine surface areas. Interactions of cerium oxide with some phosphorus-containing compounds were investigated. Some of the examined samples, especially those prepared by annealing from carbonate precursors, exhibited an outstanding ability to destroy highly toxic organophosphates, such as pesticides (parathion methyl), or nerve agents (soman, VX). There were identified some relations between the degradation efficiency of cerium oxides and their crystallinity. It was also shown that cerium oxide is able to destroy one of widely used flame retardants - triphenyl phosphate. A phosphatase-mimetic activity of various cerium oxides was examined with the aid of a standardized phosphatase test.

show abstract

Synthesis of monodispersed nanosized CeO2 by hydrolysis of the cerium complex precursor

Cited by 18 publications

References 13 publications

Thermal decomposition of cerium triethanolamine complexes

Thermal decomposition of cerium triethanolamine complexes

Prototyping a Gas Sensors Using CeO2 as a Matrix or Dopant in Oxide Semiconductor Systems

Some Environmentally Relevant Reactions of Cerium Oxide

Contact Info

Product

Resources

About