为提高凹凸棒土对重金属离子的吸附能力以及改善其在有机溶剂中的分散性能，本研究以硅烷偶联剂KH-570为改性剂，对凹凸棒土进行初步有机改性后再与阴离子单体2-丙烯酰胺基-2-甲基丙磺酸(AMPS)进行双键加成反应，制备了1种新型有机改性凹凸棒土。利用红外光谱(FT-IR)、X射线光电子能谱(XPS)、透射电子显微镜(TEM)、X-射线衍射(XRD)、热重分析(TG)等手段对改性凹凸棒土进行了结构表征，并对其 Cd2＋吸附性能进行了研究。结果表明，该新型有机改性凹凸棒土在结构上未因改性而发生破坏，但其对重金属离子的吸附性能却有了很大幅度的提高，其中Cd2＋的吸附率可达66％，且在N-N二甲基甲酰胺、二甲基亚砜、甲醇等有机溶剂中的分散性明显提高。
A novel organic modified attapulgite (ATP-g-AMPS)composite was synthesized and investigated for adsorption of Cd2+ from aqueous solutions.To improve the adsorption capacity of heavy metal ions and disper-sion in organic solvent,the coupling reagent KH-570 was used to introduce ethylene groups onto the ATP sur-face before the graft polymerization was initiated,and the anionic monomer 2-Acrylamido-2-methyl propane sul-fonic (AMPS)was grafted by double bond addition reactions.Organic modified attapulgite was characterized by Fourier transform infrared spectroscopy (FT-IR),transmission electron microscopy (TEM),X-ray photoelec-tron spectroscopy (XPS),X-ray diffraction (XRD),and thermo-gravimetric analysis (TG).Adsorption of heavy metal ion Cd2+ onto the modified attapulgite was studied.The result shows that the anionic monomer was mainly grafted on the surface of ATP without changing its crystal structure.In addition,ATP-g-AMPS showed better adsorption properties for Cd2+ than the pure ATP.
参考文献
| [1] | Peng Liu.Polymer modified clay minerals: A review[J].Applied clay science,20071/2(1/2):64-76. |
| [2] | 周杰;刘宁;李云;马毅杰.凹凸棒石粘土的显微结构特征[J].硅酸盐通报,1999(6):50-55. |
| [3] | Jian-Liang Cao;Gao-Song Shao;Yan Wang.CuO catalysts supported on attapulgite clay for low-temperature CO oxidation[J].Catalysis Communications,200815(15):2555-2559. |
| [4] | Jianshe Shi;Xujie Yang;Qiaofeng Han;Xin Wang;Lude Lu.Synthesis and characterization of polyurethane-coated palygorskite[J].Applied clay science,20093(3):333. |
| [5] | Hao Cui;Yan Qian;Qin Li.Adsorption of aqueous Hg(II) by a polyaniline/attapulgite composite[J].Chemical engineering journal,2012:216-223. |
| [6] | 王平华;徐国永.原位聚合制备LDPE/凹凸棒土纳米复合材料[J].高分子材料科学与工程,2005(3):266-269. |
| [7] | 孙洪良;朱利中;朱建喜.双阳离子复合改性膨润土的吸附性能与构效关系[J].高等学校化学学报,2011(8):1825-1831. |
| [8] | Shouyong Zhou;Ailian Xue;Yijiang Zhao.Competitive adsorption of Hg~(2+), Pb~(2+) and Co~(2+) ions on polyacrylamide/attapulgite[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,20111/3(1/3):269-274. |
| [9] | Linhui Zhu;Lili Zhang;Yaoji Tang.Synthesis of Organo-montmorillonite/Sodium Alginate Graft Poly(acrylic acid -co-2-acrylamido-2-methyl-1-propane sulfonic acid) Superabsorbent Composite and its Adsorption Studies[J].Polymers & Polymer Composites,20144(4):417-422. |
| [10] | Y.H.Gad.Preparation and characterization of poly(2-acrylamido-2-methylpropane-sulfonic acid)/Chitosan hydrogel using gamma irradiation and its application in wastewater treatment[J].Radiation Physics and Chemistry,20089(9):1101-1107. |
| [11] | Xinliang Jin;Cui Yu;Yanfeng Li;Yongxin Qi;Liuqing Yang;Guanghui Zhao;Huaiyuan Hu.Preparation of novel nano-adsorbent based on organic-inorganic hybrid and their adsorption for heavy metals and organic pollutants presented in water environment[J].Journal of hazardous materials,20112/3(2/3):1672-1680. |
| [12] | A, V, Singh;Naresh Kumar Sharma.Synthesis, Characterization, and Applications of a New Ion Exchanger Tamarind 4-aminobenzoic Acid (TABA) Resin in Industrial Wastewater Treatment[J].International Journal of Polymeric Materials,20121/4(1/4):199-213. |
| [13] | Longxiang Zhu;Peng Liu;Aiqin Wang.High Clay-Content Attapulgite/Poly(acrylic acid) Nanocomposite Hydrogel via Surface-Initiated Redox Radical Polymerization with Modified Attapulgite Nanorods as Initiator and Cross-Linker[J].Industrial & Engineering Chemistry Research,20145(5):2067-2071. |
| [14] | Preparation and characterization of polyacrylamide/palygorskite[J].Applied clay science,20092(2):148-152. |
| [15] | 牛丽丹;傅相锴;刘素娟;杜秋亮.PAMPSLi/P（MMA-VAc）为基体的聚合物电解质[J].高等学校化学学报,2010(2):391-396. |
| [16] | Modification of palygorskite surface by organofunctionalization for application in immobilization of H_3PW_(12)O_(40)[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,201020(20):P.5911. |
| [17] | Lihua Wang;Jing Sheng.Preparation and properties of polypropylene/org-attapulgite nanocomposites[J].Polymer: The International Journal for the Science and Technology of Polymers,200516(16):6243-6249. |
| [18] | Peng Liu;Liping Jiang;Longxiang Zhu;Aiqin Wang.Novel approach for attapulgite/poly(acrylic acid) (ATP/PAA) nanocomposite microgels as selective adsorbent for Pb(Ⅱ) Ion[J].Reactive & functional polymers,2014Jan.(Jan.):72-80. |
| [19] | Hao Cui;Yan Qian;Qin Li;Zhongbo Wei;Jianping Zhai.Fast removal of Hg(II) ions from aqueous solution by amine-modified attapulgite[J].Applied clay science,2013Feb.(Feb.):84-90. |
| [20] | E. Koek Yetimoglu;M.V. Kahraman;OE. Ercan;Z.S. Akdemir;N. Kayaman Apohan.N-vinylpyrrolidone/acrylic acid/2-acrylamido-2-methylpropane sulfonic acid based hydrogels: Synthesis, characterization and their application in the removal of heavy metals[J].Reactive & functional polymers,20075(5):451-460. |
| [21] | Linhui Zhu;Lili Zhang;Yaoji Tang.Synthesis of Sodium Alginate Graft Poly (Acrylic Acid-Co-2-AcryIamido-2-Methyl-l-Propane Sulfonic Acid)/Attapulgite Hydrogel Composite and the Study of its Adsorption[J].Polymer-Plastics Technology and Engineering,20141/3(1/3):74-79. |
| [22] | Wang, Wenbo;Tian, Guangyan;Zhang, Zhifang;Wang, Aiqin.A simple hydrothermal approach to modify palygorskite for high-efficient adsorption of Methylene blue and Cu(II) ions[J].Chemical engineering journal,2015:228-238. |
| [23] | Guo, Na;Wang, Jin-Sheng;Li, Jian;Teng, Yan-Guo;Zhai, Yuan-Zheng.DYNAMIC ADSORPTION OF Cd2+ ONTO ACID-MODIFIED ATTAPULGITE FROM AQUEOUS SOLUTION[J].Clays and clay minerals,20145/6(5/6):415-424. |
| [24] | 姚超;张国庆;吴凤芹;李为民;李效棠;刘建平.硬脂酸钠对凹凸棒土有机表面改性的研究[J].非金属矿,2008(6):1-3. |
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