Enhanced photocatalytic CO2 conversion using MOF and chalcogenide nanocomposites synthesised via an In-situ growth approach
Thillai LAKSHMI, S Shanmuga PRIYA, Lavanya MULKY, Muhammad TAHIR
Abstract. A highly effective photocatalyst ought to provide rich active sites, use enough light, and transfer photo-induced electron-hole pairs rapidly. This research work reports the successful preparation of a highly active, low-cost composite using an in-situ growth approach. The selected Metal-organic framework (MOF) enables active sites in the photocatalytic reduction process and provides adequate room for the chalcogenide nanoparticles to disperse due to its extremely uniform surface. Furthermore, the composite exhibits a greater capacity to absorb light when compared to pure MOF and chalcogenide. The rate of photo-generated carrier recombination is significantly reduced, speeding up the separation and transmission of photo-excited electron-hole pairs. The morphological, compositional, structural, and optical characteristics are thoroughly examined and analysed using characterisation techniques, such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Ultraviolet absorption (UV), and Photoluminescence spectroscopy (PL). The XRD pattern of the synthesised semiconductor matched well with the characteristic peaks corresponding to the Joint Committee on Powder Diffraction Standards (JCPDS) data. A gas-liquid-solid batch photoreactor setup with 250W UV light irradiation was used to perform a thorough analysis of photocatalytic reduction. A control experiment is conducted in the absence of both light and CO₂ to confirm that product formation occurs only under illuminated conditions. At a 30% addition rate of MOF, the optimal rate of ethanol production was 3730.29 µmolg-1h-1, demonstrating enhanced CO2 reduction efficiency compared to pure synthesised chalcogenide and MOF.
Keywords
MOF, Chalcogenide, Nanocomposite, Conversion, Solar Fuel
Published online 6/20/2026, 8 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Thillai LAKSHMI, S Shanmuga PRIYA, Lavanya MULKY, Muhammad TAHIR, Enhanced photocatalytic CO2 conversion using MOF and chalcogenide nanocomposites synthesised via an In-situ growth approach, Materials Research Proceedings, Vol. 67, pp 347-354, 2026
DOI: https://doi.org/10.21741/9781644904176-47
The article was published as article 47 of the book Climate Action and Sustainability
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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