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Abstract

Novel Photocatalytic Reduction of CO2 into Solar Fuel Under a Continuous Flow Photoreactor Using Nano-Engineered Slag Catalyst †

by
Kingsley Safo
1,2,*,
Hussien Noby Badry
3 and
Ahmed H. El-Shazly
2
1
Department of Chemical and Biomolecular Engineering, College of Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
2
Department of Chemical and Petrochemicals Engineering, Egypt-Japan University of Science and Technology, New Borg Al-Arab City 21934, Egypt
3
Department of Mechanical Engineering, Faculty of Energy Engineering, Aswan University, Sahara City 81528, Egypt
*
Author to whom correspondence should be addressed.
Presented at the 3rd International Electronic Conference on Processes—Green and Sustainable Process Engineering and Process Systems Engineering (ECP 2024), 29–31 May 2024; Available online: https://sciforum.net/event/ECP2024.
Proceedings 2024, 105(1), 154; https://doi.org/10.3390/proceedings2024105154
Published: 28 May 2024
The biggest contribution to the global warming phenomenon is a rise in carbon dioxide, which causes climate change. The need for a novel and low-cost composite catalyst to capture and convert CO2 from the atmosphere into solar fuel is in high demand. Slag waste from a steel-making company is one of the low-cost raw materials. This slag was synthesized in this study using a solvothermal preparation technique to produce a steel slag nanocomposite catalyst. The chemical and elemental composition, morphology, crystallographic structure, and band gap were evaluated using EDX, SEM, TEM, FTIR, XRD, and UV-vis spectroscopy, respectively. The result reveals that the EAF-SSNC exhibited nanocomposite behavior with a band gap of 1.67 eV. The prepared slag nanocomposite was utilized under a continuous flow photo-reactor for CO2 reduction with water for the first time. The resulting product was analyzed using total organic carbon (TOC) analyzer and gas chromatography–mass spectrometry (GC-MS). Based on the gas chromatography analysis of the liquid products, it was revealed that CH3OH was the predominant product, whereas HCHO was the minor one. EAF-SSNC achieved 37 mg/L TOC concentration in CO2 reduction. This work showed that steel slag nanocomposites might be effectively used for CO2 reduction and will reduce the overall cost of using pure chemicals.

Author Contributions

Conceptualization, K.S.; Methodology, K.S.; validation, K.S.; formal analysis K.S.; investigation, K.S.; writing-original draft, K.S.; writing-review & editing, K.S., H.N.B. and A.H.E.-S.; supervision, H.N.B. and A.H.E.-S. All authors have read and agreed to the published version of the manuscript.

Funding

This research received no external funding.

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

No new data were created.

Acknowledgments

The authors want to express their appreciation to the Chemical and Petrochemical Engineering Department (CPE) and Egypt-Japan University of Science and Technology (E-JUST) for providing technical support.

Conflicts of Interest

The authors declare no conflicts of interest.
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Share and Cite

MDPI and ACS Style

Safo, K.; Badry, H.N.; El-Shazly, A.H. Novel Photocatalytic Reduction of CO2 into Solar Fuel Under a Continuous Flow Photoreactor Using Nano-Engineered Slag Catalyst. Proceedings 2024, 105, 154. https://doi.org/10.3390/proceedings2024105154

AMA Style

Safo K, Badry HN, El-Shazly AH. Novel Photocatalytic Reduction of CO2 into Solar Fuel Under a Continuous Flow Photoreactor Using Nano-Engineered Slag Catalyst. Proceedings. 2024; 105(1):154. https://doi.org/10.3390/proceedings2024105154

Chicago/Turabian Style

Safo, Kingsley, Hussien Noby Badry, and Ahmed H. El-Shazly. 2024. "Novel Photocatalytic Reduction of CO2 into Solar Fuel Under a Continuous Flow Photoreactor Using Nano-Engineered Slag Catalyst" Proceedings 105, no. 1: 154. https://doi.org/10.3390/proceedings2024105154

APA Style

Safo, K., Badry, H. N., & El-Shazly, A. H. (2024). Novel Photocatalytic Reduction of CO2 into Solar Fuel Under a Continuous Flow Photoreactor Using Nano-Engineered Slag Catalyst. Proceedings, 105(1), 154. https://doi.org/10.3390/proceedings2024105154

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