本文采用水热合成法,以十六烷基三甲基溴化铵为模板剂,正硅酸乙酯为硅源,2-巯基苯并噻唑为嫁接试剂,合成了新型功能介孔二氧化硅材料.利用X-射线衍射、扫描电镜、傅里叶红外等分析手段对样品进行了测试和表征.该材料形貌规则,具有高度有序的晶体结构和孔道结构,其晶面距离为4.7 nm.以2-巯基苯并噻唑修饰的功能介孔材料吸附处理30 mg/L的铅溶液,在pH值为5时,去除率达97.8％以上,平衡吸附时间为20 min.利用该材料处理含铅废水,去除率达99.0％以上,残留铅离子浓度低于国家污水排放标准.
参考文献
| [1] | 靳昕,方心灵,赵卫峰.MCM-41中孔分子筛吸附含重金属离子废水的实验研究[J].现代测量与实验室管理,2006(04):22-24,64. |
| [2] | Beck J S;Vartuli J E;Roth W J.A new family of mesoporous molecular sieves prepared with liquid crystal templates[J].American Chemical Society,1992(114):10834. |
| [3] | 吴胜举,吴翠荣,李风亭.新型介孔吸附剂的制备及吸附性能[J].环境科学学报,2009(09):1897-1904. |
| [4] | 焦华 .MCM-41型介孔分子筛的表面修饰及其吸附性能研究[D].西北大学,2007. |
| [5] | 杨虹 .功能化介孔硅材料的合成及其吸附特性研究[D].同济大学,2008. |
| [6] | Mahitti P;Fuangfa U.Preparation and use of chemically modified MCM-41 and silica gel as selective adsorbents for Hg(Ⅱ)ions[J].Journal of Hazardous Materials,2008(154):578587. |
| [7] | Salah A. Idris;Christine M. Davidson;Colm McManamon;Michael A. Morris;Peter Anderson;Lorraine T. Gibson .Large pore diameter MCM-41 and its application for lead removal from aqueous media[J].Journal of hazardous materials,2011(2/3):898-904. |
| [8] | Cui YM;Chang XJ;Zhai YH;Zhu XB;Zheng H;Lian N .ICP-AES determination of trace elements after preconcentrated with p-dimethylaminobenzaldehyde-modified nanometer SiO2 from sample solution[J].Microchemical Journal: Devoted to the Application of Microtechniques in all Branches of Science,2006(1):35-41. |
| [9] | 林品言,周方钦,亓俊霞,栾杰,李晶.介孔分子筛SBA-15分离富集-火焰原子吸收光谱法测定矿样中铅[J].冶金分析,2010(11):25-29. |
| [10] | Yan L;Zhanchao L;Jie G.Selective adsorption behavior of Pb(Ⅱ)by mesoporous silica SBA 15-supported Pb(Ⅱ)-imprinted polymer based on surface molecularly imprinting technique[J].Journal of Hazardous Materials,2011(186):197-205. |
| [11] | 陈永厚;蒙宽宏;刘际洲 .水体中常见重金属污染物及其检测方法和排放标准[J].黑龙江生态工程职业学院学报,2008,21(04):5-6. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%