Synthesis of a Superhydrophilic Self-Cleaning Material Based on Nanostructured Aluminum Titanite: Investigation of Surface Chemistry and Surface Energy

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Abdi, Nazanin | 2023

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 56922 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Madaah Hosseini, Hamid Reza
Abstract:
This research aims to enhance the wetting behavior of nanostructured aluminum titanate to improve adsorption and photocatalytic performance. In this study, heterogeneous nanostructures based on aluminum titanate were synthesized using the sol-gel method and modified with monohydrate citric acid. The stability of colloidal solutions was investigated by varying reaction conditions such as temperature, time, and modifier quantity. Analysis through FTIR and EDS confirmed the presence of carboxyl groups on the material's surface. XRD analysis indicated the existence of aluminum titanate, titanium oxide, and aluminum oxide phases. FESEM results revealed a significant population of agglomerates due to Ostwald ripening growth. WCA tests verified the superhydrophilicity of the surface-modified Tialite. The energy gap decreased from 4.5 electron volts for bulk Tialite to 2.95 electron volts for Tialite nanostructures. Photocatalytic assessments demonstrated a 26.8% increase in methylene blue dye adsorption, with a resultant photocatalytic efficiency of 69.6%
Keywords:
Surface Modification ; Aluminum Titanate ; Photocatalyst ; Superhydrophilic Surface ; Sol-Gel Method ; Surface Chemisty

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