吸附
双酚A
BETA(编程语言)
化学
化学工程
核化学
有机化学
材料科学
计算机科学
工程类
环氧树脂
程序设计语言
作者
Ștefan Bucur,Aurel Diacon,Ionel I. Mangalagiu,Alexandra Mocanu,Florica Rizea,Adrian Dinescu,Adi Ghebaur,Aurelian Cristian Boscornea,Georgeta Voicu,Edina Rusen
出处
期刊:Nanomaterials
[MDPI AG]
日期:2021-12-23
卷期号:12 (1): 39-39
被引量:6
摘要
This study presents the synthesis of silica particles bearing two beta-cyclodextrin (BCD) (beta-cyclodextrin-BCD-OH and diamino butane monosubstituted beta-cyclodextrin-BCD-NH2). The successful synthesis of the BCD-modified silica was confirmed by FT-IR and TGA. Using contact angle measurements, BET analysis and SEM characterization, a possible formation mechanism for the generation of silica particles bearing BCD derivatives on their surface was highlighted. The obtained modified silica displayed the capacity to remove bisphenol A (BPA) from wastewater due to the presence of the BCD moieties on the surface of the silica. The kinetic analysis showed that the adsorption reached equilibrium after 180 min for both materials with qe values of 107 mg BPA/g for SiO2-BCD-OH and 112 mg BPA/g for SiO2-BCD-NH2. The process followed Ho’s pseudo-second-order adsorption model sustaining the presence of adsorption sites with different activities. The fitting of the Freundlich isotherm model on the experimental results was also evaluated, confirming the BCD influence on the materials’ adsorption properties.
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