نتایج جستجو برای: cerium oxide nanocrystals

تعداد نتایج: 188099  

Journal: :Journal of Alloys and Compounds 2021

Metal molybdate compounds have attracted considerable attention due to their technological applications. Herein, we demonstrate the controllable synthesis of cerium (Ce2(MoO4)3) nanocrystals via co-precipitation method followed by microwave-assisted hydrothermal (MAH) treatment at 150 °C during different times (15, 30 and 60 min). The effect MAH time on microstructural, optical, ozone gas-sensi...

Journal: :Chemical communications 2014
Andrey Seliverstov Carsten Streb

The first example of a molecular cerium vanadium oxide photocatalyst is presented. A cerium vanadium oxide cluster, (nBu4N)2[(Ce(dmso)3)2V(IV)V(V)11O33Cl] × 2DMSO (1), was obtained by bottom-up self-assembly. The compound exhibits high visible-light photooxidative activity towards indigo with quantum efficiencies >10%. Initial mechanistic studies of the photooxidation reaction are presented. Th...

Journal: :Nanoscale 2015
Sergey M Kozlov Ilker Demiroglu Konstantin M Neyman Stefan T Bromley

Experimentally, Ce2O3 films are used to study cerium oxide in its fully or partially reduced state, as present in many applications. We have explored the space of low energy Ce2O3 nanofilms using structure prediction and density functional calculations, yielding more than 30 distinct nanofilm structures. First, our results help to rationalize the roles of thermodynamics and kinetics in the prep...

Journal: :American journal of translational research 2013
Melissa S Wason Jihe Zhao

The diverse abilities of cerium oxide nanoparticles (CONPs) have encouraged researchers to pursue CONPs as a therapeutic agent to treat a number of diseases, including cancer. In vitro and in vivo studies have shown CONPs to be toxic to cancer cells, inhibit invasion, and sensitize cancer cells to radiation therapy. However, CONPs display minimal toxicity to normal tissues and provide protectio...

Journal: :physica status solidi (RRL) - Rapid Research Letters 2016

Journal: :OncoTargets and Therapy 2014

Journal: :Catalysis Communications 2021

A series of the mixed oxides iron and cerium, with an iron(III) oxide content ranging from 0 wt% to 100 were tested as oxygen carriers in chemical looping dry reforming methane (CL-DRM). The reactivity during CL-DRM significantly increased when cerium are forming a oxide. By careful control Fe2O3/CeO2 mass ratio, initial oxidation state reaction time activity carrier material can be adjusted so...

2017
Z. Adabavazeh W. S. Hwang Y. H. Su

Intra-granular Acicular Ferrite (IAF), as one of the most well-known desirable microstructure of ferrite with a chaotic crystallographic orientation, can not only refine the microstructure and retard the propagation of cleavage crack but also provide excellent combination of strength and toughness in steel. The effect of adding cerium on microstructure and controlling proper cerium-based inclus...

Journal: :Dalton transactions 2012
Mohammad Mahdi Najafpour Fahimeh Rahimi Mojtaba Amini Sara Nayeri Mojtaba Bagherzadeh

Nano-sized particles of manganese oxides have been prepared by a very simple and cheap process using a decomposing aqueous solution of manganese nitrate at 100 °C. Scanning electron microscopy, transmission electron microscopy and X-ray diffraction spectrometry have been used to characterize the phase and the morphology of the manganese oxide. The nano-sized manganese oxide shows efficient cata...

2016
Jingxia Yang Johannes Ofner Bernhard Lendl Ulrich Schubert

Raman and IR investigations indicated the presence of reduced graphene oxide (rGO)-like residues on ceria nanoparticles after solvothermal treatment in ethanol. The appearance of such structures is closely related to cerium tert-butoxide as precursor and ethanol as solvothermal solvent. The rGO-like residues improve the catalytic CO oxidation activity. This was also confirmed by introduction of...

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