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Adsorption of Bionanomolecule on Clay Minerals in Relevance to Chemistry-Biology Interfacial Phenomenon

Preeti Bhatt1, Chandra Kala Pant1, Hemlata2 and Satish Chandra Sati1

1. Department of Chemistry, DSB Campus, Kumaun University, Nainital 263002, Uttarakhand, India

2. Department of Chemistry, Govt. P.G. College, Ranikhet 263647, Almora, Uttarakhand, India


Abstract: The present work shed light upon the surface interaction of bionanomolecule i.e., U (uracil) on MMT (montmorillonite) clay surfaces demonstrating the utility of inorganic templets in presence or absence of metal ions akin to biological activity as well as prebiotic chemistry. The effectiveness of biomolecular interaction is dependent on interfacial properties of clay minerals involving biogenic metal ions. It has been observed through spectroscopic methods that metal ions inevitably enhance the adsorption efficiency of clay by providing good adsorbent sitesdepending upon the optimized conditions of pH, time, concentration and temperature. The nature of adsorption isotherm showed monolayer formation of bionanomolecule on clay surfaces. Langmuir isotherm parameters KL and Xm revealed the better affinity of transition metal ion in comparison with alkali metals. The transition metal ionencapsulated MMT clay represents a more plausible templet than MMT with alkali metals and MMT without metal ion, for decisive surface interaction.

Key words: Adsorption, metal ions, bionanomolecule, clay surfaces, Langmuir isotherm parameters.
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