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)
作者单位
任云 内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051 
刘慧敏 内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051 
史志铭 内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051 
AuthorInstitution
REN Yun School of Materials Science and Engineering, Inner Mongolia University of Technology, Huhhot 010051, China 
LIU Hui-min School of Materials Science and Engineering, Inner Mongolia University of Technology, Huhhot 010051, China 
SHI Zhi-ming School of Materials Science and Engineering, Inner Mongolia University of Technology, Huhhot 010051, China 
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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.
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