Optical properties of cerium oxide (CeO2) nanoparticles synthesized by hydroxide mediated method

2018 ◽  
Author(s):  
Mawlood Maajal Ali ◽  
Hadeel Salih Mahdi ◽  
Azra Parveen ◽  
Ameer Azam
Keyword(s):  
Optical Properties ◽  
Cerium Oxide ◽  
Ceo2 Nanoparticles

scholarly journals Synthesis of PVA/CeO2 Based Nanocomposites with Tuned Refractive Index and Reduced Absorption Edge: Structural and Optical Studies

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1570
Author(s):  
Shujahadeen B. Aziz ◽  
Elham M. A. Dannoun ◽  
Dana A. Tahir ◽  
Sarkawt A. Hussen ◽  
Rebar T. Abdulwahid ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Absorption Edge ◽  
Ceo2 Nanoparticles ◽  
Poly Vinyl Alcohol ◽  
Optical Parameters ◽  
Single Oscillator Model ◽  
Vis Spectroscopy ◽  
The Impact ◽  
Host Polymer

In the current study, polymer nanocomposites (NCPs) based on poly (vinyl alcohol) (PVA) with altered refractive index and absorption edge were synthesized by means of a solution cast technique. The characterization techniques of UV–Vis spectroscopy and XRD were used to inspect the structural and optical properties of the prepared films. The XRD patterns of the doped samples have shown clear amendments in the structural properties of the PVA host polymer. Various optical parameters were studied to get more insights about the influence of CeO2 on optical properties of PVA. On the insertion of CeO2 nanoparticles (NPs) into the PVA matrix, the absorption edge was found to move to reduced photon energy sides. It was concluded that the CeO2 nanoparticles can be used to tune the refractive index (n) of the host polymer, and it reached up to 1.93 for 7 wt.% of CeO2 content. A detailed study of the bandgap (BG) was conducted using two approaches. The outcomes have confirmed the impact of the nanofiller on the BG reduction of the host polymer. The results of the optical BG study highlighted that it is crucial to address the ɛ” parameter during the BG analysis, and it is considered as a useful tool to specify the type of electronic transitions. Finally, the dispersion region of n is conferred in terms of the Wemple–DiDomenico single oscillator model.

Synthesis and Characterization of Cerium Oxide (CeO2) Nanoparticles

2009 ◽  
Vol 609 ◽  
pp. 189-194 ◽  
Author(s):  
C. Benmouhoub ◽  
A. Kadri ◽  
N. Benbrahim ◽  
S. Hadji
Keyword(s):  
Crystallite Size ◽  
Cerium Oxide ◽  
Ceo2 Nanoparticles ◽  
Precipitation Method ◽  
Synthesis And Characterization

Nanoparticles of cerium oxide (CeO2) are synthesized with cerium (III) nitrates (Ce(NO3)3, 6H2O) by precipitation method in ammonium hydroxyl solution (NH4OH). The influence of several parameters such as nature of the solvent, synthesizing temperature and the calcination on the crystallite size is studied by XRD, TEM and BET methods. The results show that both calcinations and synthesizing temperature affect the particles size. Also, the nature of solvent has a great effect on the morphology of CeO2 nanoparticles.

scholarly journals Structural and optical properties of cerium oxide doped barium bismuth borate glasses

2018 ◽  
Vol 499 ◽  
pp. 183-188 ◽  
Author(s):  
Silvia Barbi ◽  
Consuelo Mugoni ◽  
Monia Montorsi ◽  
Mario Affatigato ◽  
Corrado Gatto ◽  
...  
Keyword(s):  
Optical Properties ◽  
Cerium Oxide ◽  
Borate Glasses ◽  
Structural And Optical Properties ◽  
Bismuth Borate ◽  
Barium Bismuth

Performance and Emission Analysis of Compression Ignition Engine With Neem Methyl Ester Mixed With Cerium Oxide (CeO2) Nanoparticles

2020 ◽  
Vol 142 (8) ◽  
Author(s):  
Mayank Kapoor ◽  
Narendra Kumar ◽  
Ajay Singh Verma ◽  
Gaurav Gautam ◽  
Aditya Kumar Padap
Keyword(s):  
Methyl Ester ◽  
Cerium Oxide ◽  
Desirability Function ◽  
Engine Performance ◽  
Ceo2 Nanoparticles ◽  
Performance Characteristics ◽  
Compression Ignition Engine ◽  
Emission Analysis ◽  
Performance And Emission ◽  
Harmful Emissions

Abstract This paper depicts Box-Behnken design (BBD) approach to optimize the performance and emission characteristics of adjustable compression ratio, single- cylinder diesel engine with nanoparticle-blended biofuel. Cerium oxide (CeO2) nanoparticles and diethyl ether (DEE) are mixed with neem methyl ester (NME) in corresponding ratios as per BBD experimental plan. Engine performance characteristics brake thermal efficiency (BTE), brake-specific fuel consumption (BSFC), and NOx, CO, HC, and CO2 emissions have been analyzed. To study the influence of input parameters, quadratic models are developed on each output response using analysis of variance (ANOVA). Desirability function approach has been used to optimize the performance of multi-response parameters. The results revealed that nanoparticles mixed blends of NME and DEE enhances the performance characteristics and reduce the harmful emissions.

scholarly journals Thin Coatings of Cerium Oxide Nanoparticles with Anti-Reflective Properties

2019 ◽  
Vol 9 (18) ◽  
pp. 3886 ◽  
Author(s):  
Laura J. Romasanta ◽  
Lauriane D’Alençon ◽  
Sara Kirchner ◽  
Christophe Pradère ◽  
Jacques Leng
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Cerium Oxide ◽  
Self Assembly ◽  
Large Scale ◽  
High Refractive Index ◽  
Thin Coatings ◽  
Excellent Candidate ◽  
Lossy Dielectrics ◽  
Uv Visible

Cerium oxide, in addition to its catalytic properties, is also known for its optical properties such as ultraviolet (UV) radiation filtering and a relatively high refractive index ( n > 2 ), which makes it an excellent candidate for multifunctional coatings. Here, we focus on the optical properties of thin deposits (≲2 μ m) of densely packed C e O 2 nanoparticles, which we assemble using two evaporation-based techniques: convective self-assembly (CSA, a type of very slow blade-coating) to fabricate large-scale coatings of controllable thickness—from tens of nanometres to a few micrometers—and microfluidic pervaporation which permits us to add some micro-structure to the coatings. Spectroscopic ellipsometry yields the refractive index of the resulting nano-porous coatings, which behave as lossy dielectrics in the UV-visible regime and loss-less dielectrics in the visible to infra-red (IR) regime; in this regime, the fairly high refractive index (≈1.8) permits us to evidence thickness-tunable anti-reflection on highly refractive substrates, such as silicon, and concomitant enhanced transmissions which we checked in the mid-IR region.

Luminescence and optical properties of cerium oxide nanoparticles

2019 ◽  
Vol 92 ◽  
pp. 136-142 ◽  
Author(s):  
I.N. Bazhukova ◽  
S.Yu. Sokovnin ◽  
V.G. Ilves ◽  
A.V. Myshkina ◽  
R.A. Vazirov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Cerium Oxide ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles

Structure and Optical Properties of CeO2 Nanoparticles Synthesized by Precipitation

2013 ◽  
Vol 42 (8) ◽  
pp. 2536-2541 ◽  
Author(s):  
I-Tsan Liu ◽  
Min-Hsiung Hon ◽  
Lay Gaik Teoh
Keyword(s):  
Optical Properties ◽  
Ceo2 Nanoparticles

Thermal and electro-optical properties of cerium-oxide-doped liquid-crystal devices

2016 ◽  
Vol 44 (3) ◽  
pp. 538-543 ◽  
Author(s):  
Hyo-Young Mun ◽  
Hong-Gyu Park ◽  
Hae-Chang Jeong ◽  
Ju Hwan Lee ◽  
Byeong-Yun Oh ◽  
...  
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Cerium Oxide ◽  
Liquid Crystal Devices
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