Harnessing sunlight as photothermal hydrogenation of CO2 via ZIF-67 derived Co3O4 and Ni supported on TiO2
Kamran KAMRAN, Muhammad TAHIR
Abstract: Atmospheric carbon dioxide is concentrated to the point of prompting worldwide interest to recover this greenhouse gas to value added products in forms of fuels and chemicals. CO2 hydrogenation is one of the possible ways to solve the problem whose solutions include renewable energy as a driving force. Here photothermal catalysis, with its integration of solar-induced photonic and thermal processes, becomes an attractive means of selective and efficient conversion of CO2 at low temperatures. This research describes a Co3O4-Ni/TiO2 nanocomposite that synergistically blends the redox property of Co3O4. It has high-capacity hydrogenation property of Ni and the strong light capturing and efficient electron hole separation capacity of TiO2. The results showed that 10 wt.% Co3O4 and 10 wt.% Ni presented highest selectivity of 81%. MOF-derived composites exhibited significant CH4 yield in comparison with that of uncalcined MOF nanocomposites. Preparation of ternary composite has more reducibility and produced low valence oxidation/metallic form of Co-Ni-Ti. It has contributed to noteworthy oxygen vacancy density. An optimal reaction conditions including temperature of 350°C and 5mlmin-1 flow rate has indicated a good interaction of the reactants and transformation of the CO2 into CH4. In this way, the MOF-templated ternary nanocomposite demonstrated a convenient approach to controlling of the structure of the MOF derivatives and enhancing strong interfacial interactions to make the efficient renewable fuel generation.
Keywords
Hydrogenation, Photothermal, Carbon Dioxide, Methanation
Published online 6/20/2026, 6 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Kamran KAMRAN, Muhammad TAHIR, Harnessing sunlight as photothermal hydrogenation of CO2 via ZIF-67 derived Co3O4 and Ni supported on TiO2, Materials Research Proceedings, Vol. 67, pp 355-360, 2026
DOI: https://doi.org/10.21741/9781644904176-48
The article was published as article 48 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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