Refluxing synthesis of Mn-doped ZnO nanoparticles and their applications in dielectric ceramics

Micro & nano letters

article

Ye Zhao¹  Fan Tong¹  Rong Yang¹  Xiao Qu¹  Mao-Hua Wang¹ 

[1] School of Petrochemical Engineering, Changzhou University

关键词: nanofabrication;    X-ray chemical analysis;    manganese;    nanoparticles;    transmission electron microscopy;    II-VI semiconductors;    sintering;    powders;    semiconductor growth;    semiconductor doping;    zinc compounds;    permittivity;    X-ray diffraction;    scanning electron microscopy;    ceramics;    dielectric losses;    wide band gap semiconductors;    Fourier transform infrared spectra;    Mn-doped ZnO nanoparticles;    X-ray powder diffraction;    energy-dispersive X-ray spectroscopy;    pure ZnO nanoparticles;    (101) diffraction peaks position;    pure ZnO powders;    ZnO crystal lattice;    Mn doping;    doping concentration;    ZnO nanocrystal;    Mn-doped ZnO ceramics;    dielectric loss;    dielectric constant;    manganese -doped zinc oxide nanoparticles;    Fourier transform infrared spectroscopy;    transmission electron microscopy;    EDS;    time 2.0 hour;    temperature 125.0 degC;    temperature 1000.0 degC;    ZnOMn;   

DOI  :  10.1049/mnl.2018.5397

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Rheumatoid arthritis (RA) is a chronic inflammatory disease associated with decreased antioxidant state .This study aim to investigate the status of oxidant/antioxidant in a sample of  Iraqi patients with RA and the role of peroxynitrite and its natural scavenger uric acid in them .This case-controlled study was conducted at Baghdad teaching hospital /Baghdad from December 2010-May 2011 . Twenty-five patients with mean age 39 years and 25 apparently healthy subject as controls with mean age 29 years were included in the study .Investigations include estimation of serum levels of nitric oxide (NO)  ,peroxynitrite (PN) , malondialdehyde (MDA)  , and uric acid (UA) .Serum PN levels were significantly elevated in RA patients as compared with control subjects , UA levels were found significantly lowered in RA patients as compared with control subjects.  No significant differences were found between NO and MDA among  patients and controls group .In conclusion :this study demonstrated decreased serum uric acid levels in patients with RA accompanied by decreased its effect as a natural scavenger of PN. Key word :   Rheumatoid arthritis ,Peroxynitrite ,Uric acid.

【 授权许可】

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