Cerium oxide nanoparticles coated by surfactant sodium bis(2-ethylhexyl) sulphosuccinate (AOT): local atomic structures and X-ray absorption spectroscopic studies
Wu ZH(吴忠华); Guo L(郭林); Wu, ZH; Benfield, RE; Guo, L; Li, HJ; Yang, QL; Grandjean, D; Li, QS; Zhu, HS
刊名JOURNAL OF PHYSICS-CONDENSED MATTER
2001
卷号13期号:22页码:5269-5283
学科分类Physics
DOI10.1088/0953-8984/13/22/320
通讯作者Chinese Acad Sci, Inst High Energy Phys, BSRF, Beijing 100039, Peoples R China ; Univ Kent, Sch Phys Sci, Ctr Mat Res, Canterbury CT2 7NR, Kent, England ; Beijing Inst Technol, Coll Chem Engn & Mat Sci, Beijing 100081, Peoples R China
文章类型Article
英文摘要Cerium oxide nanoparticles coated by sodium bis(2-ethylhexyl) sulphosuccinate (AOT) were prepared by using a microemulsion method. Transmission electron microscopy revealed an average particle size of 2-3 nm. X-ray diffraction showed that the cerium oxide nanoparticles retain the CeF2-type cubic structures like the bulk crystal. The intermediate valence of formally tetravalent compounds had been detected by x-ray-absorption near-edge structure (XANES) spectra of Ce L-III absorption in bulk CeO2 and the cerium oxide nanoparticles. Two well resolved white lines can be assigned to the electron configurations of 4f(0)L and 4f(1)L, respectively, where L denotes a ligand hole. At the same time, the cerium oxide nanoparticles also showed the structural features of trivalent compounds, in comparison to the trivalent Ce(NO3)(3) 6H(2)O, Four Lorentzian functions and two arctan functions were used to fit the normalized XANES spectra. The extended x-ray-absorption fine-structure (EXAFS) technique was used to probe the local atomic structures around the absorber Ce. The multielectron excitation effect on the EXAFS spectra was eliminated. A core-shell model was used to deduce the near-neighbour structural parameters around cerium. Bulk CeO2 with eight oxygen atoms located at 2.343 Angstrom was used as the reference sample to extract the backscattering amplitude and phase shift of the Ce-O bond. One half of the atoms locate at the core part with the CeF2-type cubic structures (eight oxygens at 2.343 Angstrom around Ce), the other half of the atoms are amorphous phase located in the shell part (surface of the nanoparticles) with approximately Ce2O3 structural features (averaged seven oxygens at 2.50 Angstrom ,around Ce).
类目[WOS]Physics, Condensed Matter
研究领域[WOS]Physics
原文出处查看原文
语种英语
WOS记录号WOS:000169305400032
引用统计
被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240023
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Wu ZH,Guo L,Wu, ZH,et al. Cerium oxide nanoparticles coated by surfactant sodium bis(2-ethylhexyl) sulphosuccinate (AOT): local atomic structures and X-ray absorption spectroscopic studies[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2001,13(22):5269-5283.
APA 吴忠华.,郭林.,Wu, ZH.,Benfield, RE.,Guo, L.,...&Zhu, HS.(2001).Cerium oxide nanoparticles coated by surfactant sodium bis(2-ethylhexyl) sulphosuccinate (AOT): local atomic structures and X-ray absorption spectroscopic studies.JOURNAL OF PHYSICS-CONDENSED MATTER,13(22),5269-5283.
MLA 吴忠华,et al."Cerium oxide nanoparticles coated by surfactant sodium bis(2-ethylhexyl) sulphosuccinate (AOT): local atomic structures and X-ray absorption spectroscopic studies".JOURNAL OF PHYSICS-CONDENSED MATTER 13.22(2001):5269-5283.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
7501.pdf(384KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[吴忠华]的文章
[郭林]的文章
[Wu, ZH]的文章
百度学术
百度学术中相似的文章
[吴忠华]的文章
[郭林]的文章
[Wu, ZH]的文章
必应学术
必应学术中相似的文章
[吴忠华]的文章
[郭林]的文章
[Wu, ZH]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 7501.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。