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Комплексний підхід до розуміння механізму адсорбції амінокислот на неорганічних поверхнях: гліцин на кремнеземі

Sahan M. Godahewa1, Aashani Tillekaratne1
Affiliation: 
1 Department of Chemistry, University of Colombo, Colombo 03, Sri Lanka taashani@sci.cmb.ac.lk
DOI: 
https://doi.org/10.23939/chcht17.02.253
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PDF icon full_text.pdf999.79 KB
Abstract: 
Досліджено адсорбцію гліцину на поверхні аморфного кремнезему з метою показати каталітичну активність поверхонь кремнезему щодо утворення пептидних зв’язків на пребіотичній землі. Наночастинки кремнезему були син-тезовані за допомогою мікрохвильового методу й охарак-теризовані СЕМ. Гліцин з водного розчину адсорбували на одержаних наночастинках, а адсорбційну поведінку характеризували за допомогою аналізів FTIR і ТГА. За концентрації гліцину 0,5 М і за pH=7 спостерігалася сприятлива адсорбція, яка підпорядковувалася моделі ізотерми Ленгмюра. Утворення пептидного зв’язку підтверджено FTIR аналізом. Зроблено висновок, що адсорбція гліцину відбувається через електростатичну взаємодію та утворення водневих зв’язків між поверхнею кремнезему і молекулами гліцину.
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