任云,刘慧敏,史志铭.柠檬酸三钠和纳米Al203胶体体系吸附性和稳定性的研究[J].表面技术,2007,36(4):22-24.
REN Yun,LIU Hui-min,SHI Zhi-ming.Study on Absorption and Stability of Sodium Citrate ori Nario-A1203 Colloform System[J].Surface Technology,2007,36(4):22-24 |
| 柠檬酸三钠和纳米Al203胶体体系吸附性和稳定性的研究 |
| Study on Absorption and Stability of Sodium Citrate ori Nario-A1203 Colloform System |
| 投稿时间：2007-04-02 修订日期：2007-08-10 |
| DOI： |
| 中文关键词: 定量吸附 柠檬酸三钠 紫外光谱 纳米Al2 03粉体 |
| 英文关键词:Absorption quantity Sodium citrate UV spectrum Nano-alumina powder |
| 基金项目:教育部“春晖计划”及2004年教育部“新世纪优秀人才支持计划”( NCET-040263) |
|
|
|
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 为了降低纳米A1203粉体的表面活性，充分发挥其纳米性能，通过黏度和沉降试验定性地表征了柠檬酸三钠在A1203粉体上的吸附情况，并且用紫外一可见分光光度计研究了在pH =10时柠檬酸三钠在纳米A1203粉体上的定量吸附情况，测量波长为198nm。用透射电镜观察吸附前后的形貌。结果表明：当浆料的pH= 10时，柠檬酸三钠在纳米A1203粉体上的吸附满足Langmuir单层吸附，最大吸附量为1.583mg/mL，此时，柠檬酸的量相对于A1203粉体为2.5%，恰好黏度最低，沉降速度也最小，即胶体的稳定性和吸附性同时达到最佳。 |
| 英文摘要: |
| In order to reduce surfacation active of nano-alumina, make full use of its nano advantage , adsorption characteristic of sodium citrate on nano-alumina was analyzed qualitatively by sedimentation and viscosity experiments. And adsorption quantity of sodium citrate on nano-alumina was measured under pH = 10 by UV spectrum. The wavelength was 198nm. Adsorption images were observed by TEM. The results show that adsorption behaviors accord with langmuir monolayer adsorption. The maximum of adsorption is l. 583mg/mL. When pH value is 10 and the amount of sodium citrate relative to nano-alumina is 2. 5 percent, the viscosity and the sedimentation velocity can get the lowest value. That is to say, stability and adsorptive capability reach optimal effect, together. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
渝公网安备 50010702501715号