改性MCM-41分子筛的合成与亚甲基蓝吸附性能

doi:10.11962/1006-4990.2019-0366

Abstract

Abstract:

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

CLC Number:

O634.41

Chong Yanzhu,Zhang Aiwen. 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.

Figures/Tables 7

References 8

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质量浓度/（mg·L^-1）	吸光度A	质量浓度/（mg·L^-1）	吸光度A
0.5	0.100	4	0.739
1	0.188	8	1.391
2	0.383	10	1.735

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Ressearch on preparation of modified amino-functionalized MCM-41 molecular sieve and adsorption capability of methylene blue

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