نتایج جستجو برای: gdsm doped ceo2 nanoparticles

تعداد نتایج: 153583  

2017
Y. A. SYED

This present study has been described the synthesis, characterization and antibacterial activity of gadolinium doped cerium oxide nanoparticles. The nanoparticles were prepared by hydrothermal method with various concentrations of gadolinium ranges from 2 mol% to 8 mol%. The X-ray diffraction (XRD) pattern revealed the face-centered cubic structure with crystalline size of 58.3 nm to 57.4 nm wi...

Journal: :Physical chemistry chemical physics : PCCP 2008
Changjie Mao Yixin Zhao Xiaofeng Qiu Junjie Zhu Clemens Burda

Nitrogen-doped CeO2 nanoparticles were synthesized through a wet-chemical route. Nitrogen has been successfully incorporated into CeO2 nanoparticles and the nitrogen-doping level was also successfully controlled. The optical properties due to the different N-doping levels in CeO2 nanoparticles were characterized by UV-Vis diffuse reflectance spectroscopy (DRS), which showed a visible-light abso...

2014
D. Channei B. Inceesungvorn N. Wetchakun S. Ukritnukun A. Nattestad J. Chen S. Phanichphant

Undoped CeO2 and 0.50-5.00 mol% Fe-doped CeO2 nanoparticles were prepared by a homogeneous precipitation combined with homogeneous/impreganation method, and applied as photocatalyst films prepared by a doctor blade technique. The superior photocatalytic performances of the Fe-doped CeO2 films, compared with undoped CeO2 films, was ascribed mainly to a decrease in band gap energy and an increase...

2015
Joseph C. Bear Paul D. McNaughter Charles W. Dunnill Ramesh K. Guduru

Nickel-doped cerium dioxide nanoparticles exhibit room temperature ferromagnetism due to high oxygen mobility within the doped CeO2 lattice. CeO2 is an excellent doping matrix as it can lose oxygen whilst retaining its structure. This leads to increased oxygen mobility within the fluorite CeO2 lattice, leading to the formation of Ce3+ and Ce4+ species and hence doped ceria shows a high propensi...

2011
Hongying Liang Joan M. Raitano Guanghui He Austin J. Akey Irving P. Herman Lihua Zhang Siu-Wai Chan

Nanoparticles of palladium-doped cerium oxide (Pd–CeO2) have been prepared by aqueous co-precipitation resulting in a single phase cubic structure after calcination according to X-ray diffraction (XRD). Inhomogeneous strain, calculated using the Williamson–Hall method, was found to increase with palladium content, and the lattice contracts slightly, relative to nano-cerium oxide, as palladium c...

Journal: :Physical chemistry chemical physics : PCCP 2015
Yu-Lin Kuo Yu-Ming Su Hung-Lung Chou

This study describes the use of a composite nitrate salt solution as a precursor to synthesize CeO2 and Gd2O3-doped CeO2 (GDC) nanoparticles (NPs) using an atmospheric pressure plasma jet (APPJ). The microstructures of CeO2 and GDC NPs were found to be cubical and spherical shaped nanocrystallites with average particle sizes of 10.5 and 6.7 nm, respectively. Reactive oxygen species, detected by...

2016
H. Shi T. Hussain R. Ahuja T. W. Kang W. Luo

The magnetic properties and electronic structures of pure, doped and defective cerium oxide (CeO2) have been studied theoretically by means of ab initio calculations based on the density function theory (DFT) with the hybrid HF/DFT technique named PBE0. Carbon (C), nitrogen (N), phosphorus (P), sulphur (S), lanthanum (La) and praseodymium (Pr) doped in CeO2 and CeO2 containing oxygen vacancies ...

Journal: :Nanoscale 2015
Yan-Jie Wang Hao Dong Guang-Ming Lyu Huai-Yuan Zhang Jun Ke Li-Qun Kang Jia-Li Teng Ling-Dong Sun Rui Si Jing Zhang Yan-Jun Liu Ya-Wen Zhang Yun-Hui Huang Chun-Hua Yan

Due to their excellent anti-oxidation performance, CeO2 nanoparticles receive wide attention in pharmacological application. Deep understanding of the anti-oxidation mechanism of CeO2 nanoparticles is extremely important to develop potent CeO2 nanomaterials for anti-oxidation application. Here, we report a detailed study on the anti-oxidation process of CeO2 nanoparticles. The valence state and...

2015
Jingxia Yang Liliana Lukashuk Johanna Akbarzadeh Michael Stöger-Pollach Herwig Peterlik Karin Föttinger Günther Rupprechter Ulrich Schubert

Co3 O4 -modified CeO2 (Co/Ce 1:4) was prepared by a combination of sol-gel processing and solvothermal treatment. The distribution of Co was controlled by means of the synthesis protocol to yield three different morphologies, namely, Co3 O4 nanoparticles located on the surface of CeO2 particles, coexistent Co3 O4 and CeO2 nanoparticles, or Co oxide structures homogeneously distributed within Ce...

2015
Yasuo Morimoto Hiroto Izumi Yukiko Yoshiura Taisuke Tomonaga Takako Oyabu Toshihiko Myojo Kazuaki Kawai Kazuhiro Yatera Manabu Shimada Masaru Kubo Kazuhiro Yamamoto Shinichi Kitajima Etsushi Kuroda Kenji Kawaguchi Takeshi Sasaki

We performed inhalation and intratracheal instillation studies of cerium dioxide (CeO2) nanoparticles in order to investigate their pulmonary toxicity, and observed pulmonary inflammation not only in the acute and but also in the chronic phases. In the intratracheal instillation study, F344 rats were exposed to 0.2 mg or 1 mg of CeO2 nanoparticles. Cell analysis and chemokines in bronchoalveola...

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