Synthesis and characterization of metal organic framework-based photocatalyst and membrane for carbon dioxide conversion

Autor: Natasha Lydia Lewis, Shivy Mangal, S. Shanmuga Priya, Sneha Jonnalagadda
Rok vydání: 2018
Předmět:
Zdroj: Materials Today: Proceedings. 5:16378-16389
ISSN: 2214-7853
DOI: 10.1016/j.matpr.2018.05.134
Popis: The present work is an approach to study the photocatalytic conversion of carbon dioxide (CO 2 ) to methanol by using a novel MOF-based catalyst. A copper-based metal organic framework called Cu 3 BTC 2 where (BTC = benzene-1, 3, 5-tricarboxylate) was synthesized successfully by solvothermal and co-ordination modulation method. The MOF thus obtained exhibited a large surface area. It was further utilized as one of the reactants for the synthesis of an MOF-based photocatalyst containing TiO 2 . This photocatalyst, TiO 2 @Cu 3 BTC 2 , was obtained by the hydrolysis of Titanium (IV) isopropoxide under solvothermal conditions. The prepared MOF was then characterized by X-ray diffraction (XRD), Thermo-gravimetric analysis (TGA) and Brunauer–Emmett–Teller (BET) techniques. It was noted that TiO 2 @Cu 3 BTC 2 exhibits strong photocatalytic activity in comparison with TiO 2 nanoparticles and this modified form of the photocatalyst could be used in the conversion of carbon dioxide to methanol using visible light as a source of irradiation. Additionally, an MOF-based membrane was synthesized using soil and first dip coating procedure. After characterization of the membrane, it was observed that the nucleation density of MOF directly on a clay-based support was very low. Treatment of membrane with alumina could increase the coverage of MOF particles as it would provide a better-activated surface.
Databáze: OpenAIRE
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