[1]杨振东,郭玉莹,孙中溪*.纳米氧化硅的制备及其对Cu2+的吸附行为[J].武汉工程大学学报,2009,(03):1-3.
YANG Zhen dong,GUO Yu ying,SUN Zhong xi.The synthesis of nanoscale silica and its adsorption behaviors for Cu2+[J].Journal of Wuhan Institute of Technology,2009,(03):1-3.
点击复制
纳米氧化硅的制备及其对Cu2+的吸附行为()
《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]
- 卷:
-
- 期数:
-
2009年03期
- 页码:
-
1-3
- 栏目:
-
化学与化学工程
- 出版日期:
-
2009-03-28
文章信息/Info
- Title:
-
The synthesis of nanoscale silica and its adsorption behaviors for Cu2+
- 文章编号:
-
16742869(2009)03000103
- 作者:
-
杨振东; 郭玉莹; 孙中溪*
-
济南大学化学化工学院,山东 济南 250022
- Author(s):
-
YANG Zhendong; GUO Yuying; SUN Zhongxi
-
School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China
-
- 关键词:
-
正硅酸乙酯水解法; 纳米氧化硅; Cu2+; 吸附
- Keywords:
-
solgas method; surface acidbase properties; Cu2+ adsorption
- 分类号:
-
O614
- DOI:
-
-
- 文献标志码:
-
A
- 摘要:
-
采用正硅酸乙酯水解法,根据溶胶凝胶的原理,制备了纳米氧化硅;并用BET、TEM等方法表征其比表面积,粒径大小及形貌;用电位滴定的方法研究了SiO2的表面酸碱性质;用分光光度法测定出不同条件(包括pH值、SiO2的用量等)下SiO2对Cu2+的吸附百分率.研究结果表明纳米氧化硅对H+有很强的吸附能力,在pH为3~5范围内,SiO2对Cu2+的吸附百分率随着pH值的不同有明显改变,在pH为4.5,浓度大于10 g/L时,SiO2 对Cu2+的吸附率达到最佳状态.
- Abstract:
-
In this paper nanoscalesilica were prepared by the hydrolysis of tetraethoxysilane (TEOS) using the solgel method. The specific surface area,particle size and morphology of synthesized nanoparticles were characterized with BET and TEM techniques. By means of potentiometric titration techniques,the surface acidbase properties of SiO2 were investigated. Testing results demonstrated that the synthesized silica possess very high adsorption capacity for H+. In addition,the influence of various variables such as the solution pH,quantities of SiO2 for adsorption of Cu2+ were studied. It was revealed that the adsorption percentage at silica surfaces change dramatically under pH value of 3~5 and at the pH equals 4.5 and the concentration of silica is more than 10 g/L,the adsorption of copper ions at silica surface reaches an optimum state.
参考文献/References:
[1]Kota S R,Khalil E,Tsutomu K,et al.A novel method for synthesis of silica nanoparticles [J]. Journal of Colloid and Interface Science,2005:125131.
[2]聂海龙,何晓晓,霍希琴,等. 不同功能化集团修饰的硅壳纳米颗粒分散性研究[J]. 高等化学学报,2008,29(3): 477481.
[3]党文修,亓贯林,李晶,等. 纳米介孔二氧化硅中空纤维的合成[J]. 济南大学学报(自然科学版),2006,20 (1): 1618.
[4]Robert O J,Thomas W H. Adsorption of hydrolysable metal ions at the oxidewater interface [J]. Journal of Colloid and Interface Science,1972,40(1): 4252.
[5]陈志和,方红卫,陈明洪. 泥沙颗粒表面吸附铜离子的分布特征的实验研究[J]. 水利学报,2008,39 (5): 633636.
[6]吕长和,刘俊生,王耀棠. 无机有机杂化材料的制备及其对Cu2+吸附性能的研究 [J]. 合肥学院学报,2008,18 (1): 3841.
[7]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):13511354.
[8]Schindler P W,Fiirst B,Dick R. Ligand properties of surface silanol groups,I. Surface complex formation with Fe3+,Cu2+,Cd2+ and Pb2+[J].Colloid and Inter Sci,1976,55:469475.
[9]Du Qing,Sun Zhongxi,Forsling W. Adsorption of copper at aqueous illite surfaces[J]. Colloid and Interface Science,1997,187:232242.
[10]Du Qing,Sun Zhongxi,Forsling W.Acidbase properties of aqueous illite surfaces[J]. Colloid and Interface Science,1997,187:221231.
[11]Sun Zhongxi,Su Fenwei,Forsling W.Surface characteristics of magnetite in aqueous suspension[J]. Colloid and Interface Science,1998,197:151159.
备注/Memo
- 备注/Memo:
-
收稿日期:20081027基金项目:国家自然科学基金(NO.20677022)和国家自然科学重点基金(NO.20537020)
作者简介:杨振东(1985),男,山东济南人,硕士研究生.研究方向:固/液界面化学. 指导老师:孙中溪,教授,博士,博士研究生导师.研究方向:固/液界面化学.
更新日期/Last Update: