Studies of Surface Functional Modification of α-Al₂O₃ Nanoparticles Using Organic Chain Dicarboxylic Acid Containing Trimellitylimido-Amino Acid-Based Diacids Via Post Modification Method

Abstract

With the rapid development of nanoscience and nanotechnology, wide use of metal oxide nanoparticles (NPs) has been reported. Thus, improving the dispersion stability of NPs in various liquids is essential for those applications. The authors describe the surface modification of aluminum oxide NPs using dicarboxylic acids (DCAs) containing natural amino acids such as L-phenylalanine, S-valine, L-methionine, L-leucine, and L-alanine through the ultrasonic method. The successful production of the modified α-Al₂O₃ NPs was verified by different techniques. The results of analyses proved that the DCAs as biomodifiers are grafted onto the surface of α-Al₂O₃ NPs.

Keywords:

• surface modification
• α-Al₂O₃ nanoparticles
• dicarboxylic acids
• ultrasonic irradiation
• natural amino acids

Funding

The authors wish to acknowledge the partial financial support of the Research Affairs Division of Isfahan University of Technology (IUT), Isfahan. Further financial support from Iran Nanotechnology Initiative Council (INIC), National Elite Foundation (NEF), and Center of Excellency in Sensors and Green Chemistry Research (IUT) is gratefully acknowledged.