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Synthesis of molecularly imprinted sol-gel matrix for specific binding of creatinine

Synthesis of molecularly imprinted sol-gel matrix for specific binding of creatinine / Muhammad Helmi Zolkeflay
Sintesis polimer cap molekul (MIP) untuk pengecaman kreatinin telah dibangunkan melalui proses sol-gel. Tetraethylorthosilicate (TEOS) telah digunakan sebagai monomer berfungsi dan ditaut silang dengan aluminium klorida hexahydrate (AlCl3.6H2O) dan asid-2-akrilamido-2- metilpropanasulfonik (AMPS) dengan kehadiran kreatinin sebagai templat untuk pencetakan. Keputusan menunjukkan bahawa MIP yang dihasilkan dengan menggunakan AlCl3.6H2O sebagai bahan silang mempunyai tarikan yang lebih baik terhadap kreatinin berbanding dengan MIP yang dihasilkan dengan menggunakan AMPS sebagai bahan silang pada nisbah 1:5:5 (Cre:TEOS:Al3+ or AMPS). Kajian telah dilanjutkan dengan menghasilkan MIP yang berlainan nisbah molar untuk TEOS: Al3+ dan berlainan nisbah molar untuk Al3+: TEOS, AlCl3.6H2O sebagai bahan silang. Eksperimen penjerapan telah dijalankan untuk mengkaji ikatan spesifik MIP terhadap kreatinin. MIP telah dicirikan dengan spektroskopi inframerah transformasi Fourier (FTIR), FESEM, SEM, EDX, BET dan UV-Visible (UV-Vis) Spectrophotometer. Faktor pencetakan telah dikira dengan mengira kapasiti ikatan MIP dan NIP. Kesimpulannya, MIP yang disediakan pada nisbah 1:5:5 (Cre:TEOS:Al3+) lebih sesuai berbanding dengan nisbah lain dalam kajian ini. Berdasarkan kajian isoterma, penjerapan kreatinin oleh MIP 55 dengan nisbah 1:5:5 (Cre:TEOS:Al3+) meningkat apabila kepekatan kreatinin meningkat dan mengikuti model Freundlich yang menunjukkan bahawa penjerapan boleh dihuraikan dengan penjerapan berbilang lapisan. Model persamaan kinetik pseudo tertib kedua menyediakan huraian yang tepat tentang penjerapan kinetic kreatinin oleh MIP 55 seterusnya menyokong andaian tentang model tersebut bahawa penjerapan disebabkan oleh penjerapan kimia. _______________________________________________________________________________________________________ Synthesis of molecularly imprinted polymer (MIP) for recognition of creatinine using a sol-gel process has been developed. Tetraethoxysilane (TEOS) was used as functional monomer cross-linked with aluminium chloride hexahydrate (AlCl3.6H2O) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) respectively in the presence of creatinine, which was a template for the imprinting. The results showed that the MIP synthesized using AlCl3.6H2O as crosslinker have a better affinity towards creatinine compared to the MIP synthesized using AMPS as crosslinker at ratio 1:5:5 (Cre:TEOS:Al3+ or AMPS). Further studies were carried out by synthesizing MIP at different molar ratios of TEOS: Al3+ and at different molar ratios of Al3+: TEOS by using AlCl3.6H2O as a crosslinker. Adsorption experiments were carried out to investigate the specific binding of the MIPs towards creatinine. The MIP were characterized using Fourier transform infrared spectroscopy (FTIR), FESEM, SEM, EDX, BET and UV-Visible (UV-Vis) Spectrophotometer. The imprinting factor was calculated by calculating the binding capacity of MIPs and NIPs. It was concluded that the MIPs prepared at ratio 1:5:5 (Cre:TEOS:Al3+) was proper compared to other ratios studied. From isotherm study, the adsorption of creatinine by MIP 55 with 1:5:5 (Cre:TEOS:Al3+) ratio increased when the concentration of creatinine increased and followed a Freundlich isotherm model, which indicates the sorption can be described by multilayer sorption. The pseudo-second order kinetic model provides an accurate description of sorption kinetics of creatinine onto MIP 55, and thus supports the assumption behind the model that the adsorption is due to chemisorption.
Contributor(s):
Muhammad Helmi Zolkeflay - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875005620
Language:
English
Subject Keywords:
(MIP); sol-gel; Tetraethoxysilane
First presented to the public:
6/1/2015
Original Publication Date:
8/5/2020
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 117
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2020-08-05 11:56:39.757
Submitter:
Mohd Jasnizam Mohd Salleh

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