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Ressearch on preparation of modified amino-functionalized MCM-41 molecular sieve and adsorption capability of methylene blue
Received date: 2019-11-10
Online published: 2020-05-21
MCM-41 mesoporous molecular sieves was synthesized under basic conditions by using TEOS as silicon source in the presence of CTAB as surfactant.The MCM-41 materials was further modified with 3-aminopropyl trimethylsilane and the amino modified mesoporous material NH2-MCM-41 absorbent was obtained successfully.Then the NH2-MCM-41 was characterized by X-ray diffraction（XRD）.The adsorption capability of MCM-41 and NH2-MCM-41 on methylene blue（MB） in aqueous solution was investigated under various conditions,such as temperature,amount of adsorbent,pH,initial concentration of methylene blue.The structures of MCM-41 and the amino modified mesoporous material NH2-MCM-41 were both planar hexagonal mesoporous structures.The results showed that the temperature and pH was the crucial importance in determining the adsorption capability of MCM-41 and NH2-MCM-41.The adsorption capability of the materials will be improved as the the temperature increase.Furthermore,too much lower or higher pH would decrease the adsorption capability of the materials.
Key words： MCM-41; NH2-MCM-41; methylene blue; planar hexagonal mesoporous structure
Yanzhu Chong , Aiwen Zhang . Ressearch on preparation of modified amino-functionalized MCM-41 molecular sieve and adsorption capability of methylene blue[J]. Inorganic Chemicals Industry, 2020 , 52(5) : 90 -93 . DOI: 10.11962/1006-4990.2019-0366
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