Preparation of CrO2 nanoparticles via oxidation method
文献类型：期刊论文
| 作者 | Pei, Zhenzhao1; Xu, Hongbin2; Zhang, Yi2 |
| 刊名 | MATERIALS LETTERS
 |
| 出版日期 | 2012-06-01 |
| 卷号 | 76期号:0页码:205-207 |
| 关键词 | CrO2 Nanoparticles X-ray technique Microstructure |
| ISSN号 | 0167-577X |
| 通讯作者 | Pei, ZZ |
| 英文摘要 | Nanoparticles of CrO2 were obtained by oxidation method under high pressure of oxygen with raw materials of Cr(OH)(3)center dot 1.1H(2)O in a closed system. Reaction temperature, time and initial oxygen pressure were 350 degrees C, 10 min and 6 MPa, respectively. The sizes of nanoparticles were from 55 nm to 89 nm, and the magnetization (Ms) of the nanosized CrO2 was 35.522 emu/g. The specific surface area of Cr(OH)(3)center dot 1.1H(2)O was 124 m(2)/g after ball milling method and the sizes of particles were very small. Very small particles of the precursor Cr(OH)(3)center dot 1.1H(2)O led to the formation of CrO2 nanoparticles under the preparation conditions of CrO2. The phase purity and composition were verified by X-ray technique, and the microstructure was observed by field emission scanning electron microscope. Among the four factors influencing the sizes of CrO2, the degree sequence was arranged as follows: reaction temperature > mass of H2O > initial pressure of O-2 > reaction time. (C) 2012 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Materials Science, Multidisciplinary ; Physics, Applied |
| 研究领域[WOS] | Materials Science ; Physics |
| 关键词[WOS] | CHROMIUM DIOXIDE ; PARTICLES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000303623000059 |
| 公开日期 | 2013-10-18 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3815]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Hebei Univ Engn, Dept Chem, Handan 056038, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pei, Zhenzhao,Xu, Hongbin,Zhang, Yi. Preparation of CrO2 nanoparticles via oxidation method[J]. MATERIALS LETTERS,2012,76(0):205-207. |
| APA | Pei, Zhenzhao,Xu, Hongbin,&Zhang, Yi.(2012).Preparation of CrO2 nanoparticles via oxidation method.MATERIALS LETTERS,76(0),205-207. |
| MLA | Pei, Zhenzhao,et al."Preparation of CrO2 nanoparticles via oxidation method".MATERIALS LETTERS 76.0(2012):205-207. |
入库方式： OAI收割
来源：过程工程研究所
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