Mahadi, Bahari and Che Rozid, Mamat and Aishah, Abdul Jalil and Shing, Lo Sook and Nurul Sahida, Hassan and F. F.A., Aziz and Alhassan, Mansur and Mohd Ghazali, Mohd Nawawi and Kamarizan, Kidam and Herma Dina, Setiabudi (2022) Enriching the methanol generation via CO2 photoconversion over the cockscomb-like fibrous silica copper. Fuel, 328 (125257). pp. 1-9. ISSN 0016-2361. (Published)
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Abstract
Carbon dioxide (CO2) photoconversion into methanol (CH3OH) was recognized as a beneficial approach to overcoming future energy and environmental issues. Here, CO2 photoconversion into CH3OH was intensively evaluated over fibrous silica-copper (FSCu) and copper-supported fibrous silica (CuO/KCC-1) generated through a microemulsion and incipient wetness impregnation approach, respectively. The physicochemical attributes of the generated photocatalysts were characterized via UV–vis spectroscopy, X-ray diffraction, N2 physisorption, Field-emission scanning electron microscopy, and Fourier-transform infrared spectroscopy analysis. Depiction of the characterization results revealed that FSCu possessed a considerable surface area (299.7 m2 g−1) as well as pore volume (0.70 cm3 g−1) than those of CuO/KCC-1 and CuO. Indeed, the excellent CuO dispersion and intense CuO-interaction resulted from the alternately aligned CuO and SiO2 in the fibrous framework. As a result of these great attributes, the FSCu photocatalyst recorded a superior yield of CH3OH (412.4 µmol gcat−1 h−1) with triethylamine assistance as a sacrificial reductant, followed by CuO (310.3 µmol gcat−1 h−1) and CuO/KCC-1 (189.6 µmol gcat−1 h−1). Additionally, the ideal bandgap position for FSCu compared to CuO/KCC-1 contributed to the greater yield of CH3OH. The parameter evaluations recorded that the highest yield of CH3OH for FSCu was acquired at a catalyst of 0.6 g L−1, 100 mL min−1 of CO2, and the amount of TEA of about 50 mL. This paper also proposes a photoconversion mechanism for synthesized photocatalysts, as well as a comparative assessment of their performance with recently developed CuO-based photocatalysts.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | CO2 photoconversion; Copper; Methanol; Silica support; Triethylamine |
| Subjects: | Q Science > QD Chemistry T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Chemical and Process Engineering Technology |
| Depositing User: | Mr Muhamad Firdaus Janih@Jaini |
| Date Deposited: | 07 Jan 2025 03:57 |
| Last Modified: | 07 Jan 2025 03:57 |
| URI: | http://umpir.ump.edu.my/id/eprint/42726 |
| Download Statistic: | View Download Statistics |
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