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Al掺杂 KIT-6材料的合成及其亚甲基蓝吸附性能.
- Source :
-
Journal of Functional Materials / Gongneng Cailiao . 2023, Vol. 54 Issue 6, p06184-06193. 10p. - Publication Year :
- 2023
-
Abstract
- KIT-6 is a typical three-dimensional ordered mesoporous silica, which has a wide range of applications in the fields of catalysis and adsorption. By doping the framework Al to endow the KIT-6 material with acid sites, the adsorption performance of the Al-KIT-6 material for basic dye molecules can be significantly improved. However, it is difficult to controllably synthesize Al-KIT-6 with inorganic silicon and aluminum sources. In this study, a series of Al-KIT-6 materials were directly synthesized by a pH-controlled hydrothermal method with fly ash-based sodium silicate, which can induce Al atoms doping into the KIT-6 silicon framework. The texture properties of Al-KIT-6 were characterized by N2-physical adsorption, XRD, TEM, Al NMR, XPS and NH3-TPD. The results showed that the synthesized Al-KIT-6 material had an ordered mesoporous structure. Al was mainly doped into the framework of KIT-6 material, thereby significantly increasing the acid content and acid strength. The adsorption experiments of the synthesized Al-KIT-6 materials on basic methylene blue molecules showed that the adsorption capacity of the Al-KIT-6 materials increased with the increase of Al incorporation. The adsorption kinetic experiments showed that the adsorption process conformed to the pseudo-second-order kinetics, and the adsorption isotherm model fitting results showed that the adsorption process conformed to the Langmuir adsorption model. [ABSTRACT FROM AUTHOR]
Details
- Language :
- Chinese
- ISSN :
- 10019731
- Volume :
- 54
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Functional Materials / Gongneng Cailiao
- Publication Type :
- Academic Journal
- Accession number :
- 164948985
- Full Text :
- https://doi.org/10.3969/ji.ssn.1001-9731.2023.06.024