| 纳米四氧化三铁表面酸碱性质研究 |
| |
| 引用本文： | 孙中溪,郭淑云.纳米四氧化三铁表面酸碱性质研究[J].高等学校化学学报,2006,27(7):1351-1354. |
| |
| 作者姓名： | 孙中溪 郭淑云 |
| |
| 作者单位： | 济南大学化学化工学院,济南,250022 |
| |
| 基金项目： | 济南大学校科研和教改项目 |
| |
| 摘 要： | 制备了纳米Fe3O4, 并对其进行了表征和表面酸碱行为研究. 实验结果表明, Fe3O4表面在水溶液中有非常明显的酸碱性质. 随着纳米Fe3O4加入量的增多, 溶液pH缓冲能力增强, 二者之间成正比, 据此可定量地测定H+在纳米氧化铁表面的吸附量. 运用MEDUSA和WINSGW计算软件计算了表面组分在溶液中的分布， 并讨论了表面电荷对表面组分分布的影响.
|
| 关 键 词： | Fe3O4纳米粒子 表面酸碱性质 Gran图 |
| 文章编号： | 0251-0790（2006）07-1351-04 |
| 收稿时间： | 01 26 2006 12:00AM |
| 修稿时间： | 2006-01-26 |
Surface Acid-base Properties of Magnetite Nanoparticles |
| |
| SUN Zhong-Xi,GUO Shu-Yun.Surface Acid-base Properties of Magnetite Nanoparticles[J].Chemical Research In Chinese Universities,2006,27(7):1351-1354. |
| |
| Authors: | SUN Zhong-Xi GUO Shu-Yun |
| |
| Institution: | School of Chemistry &; Chemical Engineering, Jinan University, Jinan 250022,
China |
| |
| Abstract: | In this paper,the synthesis and acid-base properties of magnetite nanoparticles were studied.The testing results show that the surface of the magnetite nanoparticles possessed an obvious acid-base property.With increasing the amount of magnetite nanoparticles in the suspension,the pH buffer capacity of solution increased dramatically.There is a proportional relationship between the amount of magnetite nanoparticles added and solution pH buffer capacity.According to this,the adsorption quantity of proton on the surfaces can be determined.The effect of surface charge on the surface speciation was discussed by using computer program MEDUSA and WINSGW to establish the distribution diagram in magnetite suspension. |
| |
| Keywords: | Fe_3O_4 nanoparticles Surface acid-base properties Gran plot |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《高等学校化学学报》浏览原始摘要信息 |
| 点击此处可从《高等学校化学学报》下载免费的PDF全文 |
|
