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Title: Carbon Dioxide Pressure and Catalyst Quantity Dependencies in Artificial Photosynthesis of Hydrocarbon Chains on Nanostructured Co/CoO Surfaces

Journal Article · · Molecules

In this study, we investigated the influence of pressure and the quantity of Co/CoO catalyst on an artificial photosynthesis process that converts CO2 and H2O into hydrocarbons (CnH2n+2, where n ≤ 18). The adsorption of CO2 and H2O on Co/CoO surfaces proved to be pivotal in this photo-catalytic reaction. Photoexcited carbon dioxide and water molecules ((CO2)* and (H2O)*) generated by illuminating the catalyst surface led to the formation of alkene hydrocarbon molecules with carbon numbers following an approximate Poisson distribution. The optimal pressure was found to be 0.40 MPa. Pressure less than 0.40 MPa resulted in low CO2 adsorption, impeding excitation for photosynthesis. At greater pressure, oil/wax accumulation on Co/CoO surfaces hindered CO2 adsorption, limiting further photosynthesis reactions. The average number of carbon atoms in the hydrocarbons and hydrocarbon yield were correlated. The amount of Co/CoO was also found to affect the hydrocarbon yield. Our study contributes to the understanding of Co/CoO-catalyzed photosynthesis and suggests that an open-flow system could potentially enhance the productivity of long-chain hydrocarbons.

Research Organization:
University of Massachusetts, Amherst, MA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE
OSTI ID:
2470346
Journal Information:
Molecules, Journal Name: Molecules Journal Issue: 7 Vol. 29; ISSN 1420-3049
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

References (37)

Recent Progress on Photothermal Heterogeneous Catalysts for CO2 Conversion Reactions journal November 2021
Photocatalytic reduction of carbon dioxide to hydrocarbon using copper-loaded titanium dioxide journal August 1994
Freundlich's adsorption isotherm journal August 1973
History of gas chromatography journal September 2002
Kinetics of Fischer–Tropsch synthesis on titania-supported cobalt journal May 2000
Effect of reaction conditions and Kinetic study on the Fischer-Tropsch synthesis over fused Co-Ni/Al2O3 catalyst journal June 2014
Electrocatalytic syngas and photocatalytic long-chain hydrocarbon productions by CO2 reduction over ZnO and Zn-based electrodes journal January 2023
Adsorption isotherm models: Classification, physical meaning, application and solving method journal November 2020
Low-cost visible-light photosynthesis of water and adsorbed carbon dioxide into long-chain hydrocarbons journal January 2020
Carbon isotope effects in the artificial photosynthesis reactions catalyzed by nanostructured Co/CoO journal September 2020
An investigation of the kinetics and mechanism of Fischer–Tropsch synthesis on Fe–Co–Mn supported catalyst journal April 2012
Understanding the generation of long-chain hydrocarbons from CO2 and water using cobalt nanostructures and light journal October 2020
Decorating CdS with cobaltous hydroxide and graphene dual cocatalyst for photocatalytic hydrogen production coupled selective benzyl alcohol oxidation journal January 2024
Photosynthesis of hydrogen and methane as key components for clean energy system journal January 2007
Light and Mass Transport Computations Guide the Fabrication of 3D-Structured TiO2 and Au/TiO2 Aerogel Photocatalysts for Efficient Hydrogen Production in the Gas Phase journal May 2023
CO2-Free Hydrogen Production by Catalytic Pyrolysis of Hydrocarbon Feedstocks in Molten Ni–Bi journal November 2020
A Review on Advanced FeNi-Based Catalysts for Water Splitting Reaction journal November 2020
g-C3N4/α-Fe2O3 Supported Zero-Dimensional Co3S4 Nanoparticles Form S-Scheme Heterojunction Photocatalyst for Efficient Hydrogen Production journal December 2020
Review on Solar Hydrogen: Its Prospects and Limitations journal July 2021
Research Progress on CO2 Photocatalytic Reduction with Full Solar Spectral Responses journal November 2021
Rational Design of the CdS/Fe-MOF Hybrid for Enhanced Hydrogen Evolution Reaction Catalysis journal May 2023
Photocatalytic Reduction of Carbon Dioxide to Methanol: Carbonaceous Materials, Kinetics, Industrial Feasibility, and Future Directions journal May 2023
Molten Salt Synthesis of Mg-Doped Ta3N5 Nanoparticles with Optimized Surface Properties for Enhanced Photocatalytic Hydrogen Evolution journal October 2023
Surface Species in Photocatalytic Methanol Reforming on Pt/TiO 2 (110): Learning from Surface Science Experiments for Catalytically Relevant Conditions journal March 2020
Temperature Dependence of the Artificial Photosynthesis Reactions Catalyzed by Nanostructured Co/CoO journal December 2020
The development of the Arrhenius equation journal June 1984
Derivation of the Freundlich Adsorption Isotherm from Kinetics journal November 2009
Intrinsic kinetics of the Fischer-Tropsch synthesis on a cobalt catalyst journal January 1991
Vapor pressures of high-molecular-weight hydrocarbons journal July 1979
High-Rate Solar Photocatalytic Conversion of CO 2 and Water Vapor to Hydrocarbon Fuels journal February 2009
Photoelectrocatalytic reduction of carbon dioxide in aqueous suspensions of semiconductor powders journal February 1979
Integrating Co(OH)2 nanosheet arrays on graphene for efficient noble-metal-free EY-sensitized photocatalytic H2 evolution journal January 2023
Using metal nanostructures to form hydrocarbons from carbon dioxide, water and sunlight journal December 2011
Conversion of water and carbon dioxide into methanol with solar energy on Au/Co nanostructured surfaces journal March 2020
Nature-Like Photosynthesis of Water and Carbon Dioxide with Femtosecond Laser Induced Self-Assembled Metal Nanostructures journal December 2009
Recent Advances of Photocatalytic Hydrogenation of CO2 to Methanol journal January 2022
Electroplating Cobalt Films on Silicon Nanostructures for Sensing Molecules journal December 2022