کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5348879 | 1503636 | 2015 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation, characterization and selective recognition for vanillic acid imprinted mesoporous silica polymers
ترجمه فارسی عنوان
آماده سازی، مشخص کردن و تشخیص انتخابی برای پلیمرهای سیلیکا مزوپور با اسید وانیلیک
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
پلیمر سیلیکا مزوپور به صورت مولکولی ثبت شده است. اسید وانیلیک، شناخت مولکولی، وارد کردن سطح،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
A vanillic acid imprinted mesoporous silica polymer (MIPs) was prepared by copolymerizing a modified mesoporous silica molecular sieve with template molecule, functional monomer and cross-linker in present work. Interaction between the template and functional monomer was investigated by ultraviolet/visible spectrophotometry. These MIPs were characterized by Fourier transmission infrared spectrometry (FTIR) and scanning electron microscopy (SEM). Adsorption dynamics and thermodynamic behavior of MIPs was explored and the selective recognition capability evaluated. Also, the applicability for the MIPs as solid phase extraction media was tested. Results indicated the 1:1 (mole ratio) complex of vanillic acid-4-vinylpyridine might predominate in the pre-polymerization mixture and the MIPs obtained possessed rapid binding dynamics and higher affinity toward template molecules, reaching adsorption equilibrium within 230 min with the highest adsorption amount of 50.7 mg gâ1. Freundlich model was shown best to describe isotherm adsorption for the MIPs. The MIPs could selectively bind template molecule with selectivity coefficients of 1.36-1.50. In addition, a higher enrichment capability when using it for gathering target compound from methanol extract of Artemisia stelleriana and a good reusability during adsorption-desorption recycling use could be observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 328, 15 February 2015, Pages 649-657
Journal: Applied Surface Science - Volume 328, 15 February 2015, Pages 649-657
نویسندگان
Hui Li, Miaomiao Xu, Susu Wang, Cuimei Lu, Zhiping Li,