Facile synthesis of Cu-BDC metal organic framework with Ag-TiO2 nanocomposites for enhanced photocatalytic solar fuel production

Document Type

Conference Proceeding

Publication Title

Iop Conference Series Earth and Environmental Science

Abstract

For the conversion of CO2 to hydrocarbons using sunlight, the development of visible-light active photocatalysts is highly desirable. In this work, we report the copper-benzene dicarboxylate metal-organic frameworks (MOF) with silver-doped titanium oxide that has been modified with varying percentages of Ag-TiO2. The synthesis involves a simple impregnation method to integrate Ag and TiO2 nanoparticles onto Cu-BDC. High quantum efficiency, stability and selectivity are provided by the nanocomposites. Characterization techniques such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Field emission scanned electron microscope (FE-SEM), Transmission electron microscope (TEM), Photoluminescence spectroscopy (PL) and others were carried out. Photocatalytic activity is evaluated under simulated solar light irradiation, demonstrating enhanced CO2 reduction efficiency compared to pure TiO2 and Cu-BDC. The highest methanol yield observed with Ag-TiO2(1%)/Cu-BDC was 16 μmolg-1catL-1 which indicates an optimal balance between Ag-TiO2 nanoparticles and Cu-BDC porous structure, facilitating efficient charge separation and maximizing catalytic activity. The Ag-TiO2/Cu-BDC nanocomposite observed in the study did not undergo degradation since Cu-BDC possesses a stable and robust crystalline structure.

DOI

10.1088/1755-1315/1500/1/012029

Publication Date

1-1-2025

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