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.

Details

Title
Facile synthesis of Cu-BDC metal organic framework with Ag-TiO2 nanocomposites for enhanced photocatalytic solar fuel production
Author
Devanathan, M; T Lakshmi Ravi; Srinivasa, R Maddappa; N Abraham Thomas; Selvanathan, S
First page
012029
Publication year
2025
Publication date
May 2025
Publisher
IOP Publishing
ISSN
17551307
e-ISSN
17551315
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3216356311
Copyright
Published under licence by IOP Publishing Ltd. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.