Preparation and Characterization of Mg/TiO2 for Visible Light Photooxidative-Extractive Deep Desulfurization

Yee, Cia Yin; Kait, Chong Fai; Fatimah, Hayyiratul; Wilfred, Cecilia Devi; Taha, Mohd Faisal; Yunus, Normawati M.

doi:10.17576/jsm-2017-4603-18

Cited by 2 publications

(4 citation statements)

References 32 publications

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Section: Characterization Of Mgs-tio2supporting

confidence: 85%

“…Both samples exhibit peaks at 1650 and 3450 cm −1 , corresponding to O-H stretching and bending. An absorption band between 400 and 1000 cm −1 was attributed to Ti-O stretching vibrations, where the same absorption band correlation was found in the study by Yee et al (2017) [20]. MgS-TiO 2 showed a significant decrease in the transmittance peak compared to TiO 2 within 1000-2300 cm −1 wavelength range.…”

Section: Characterization Of Mgs-tio2supporting

confidence: 83%

“…al. (2017) [20]. MgS-TiO2 showed a significant decrease in the transmittance peak compared to TiO2 within 1000-2300 cm −1 wavelength range.…”

Section: Characterization Of Mgs-tio2mentioning

confidence: 90%

“…Modification of TiO 2 with the addition of metal doping has shown to be able to improve its photocatalytic performance under light radiation. Furthermore, the photocatalysts were able to be recycled up to five photocatalytic activity cycles [20]. Mg doping has received attention recently due to the ionic radius of Mg that was similar to Ti.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Effect of Metal Sulfide Doping (MgS-TiO2) Nanostructure Catalyst on Photocatalytic Reduction of CO2 to Methanol

et al. 2023

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The conversion of CO2 gas from the global emission to methanol can be a route to look at in addressing greenhouse gas (GHG) issues. Photocatalysis has been attracting attention in the conversion of CO2 to methanol, as it is seen to be one of the most viable, economic, and sustainable strategies. The biggest hindrance to the use of metal oxide photocatalysts was the poisoning by sulfur content in the CO2 gas feedstock. Therefore, in the development of photocatalysts using metal oxide-based additives, the metal needs to be in the form of metal sulfides to avoid catalyst poisoning due to the presence of H2S. The magnesium sulfide-based TiO2 (MgS-TiO2) photocatalyst has not been synthesized and studied for its photocatalytic potential. In this study, a novel MgS-TiO2 photocatalyst was synthesized using a combination of wet impregnation and hydrothermal method and characterized to determine the physical and chemical properties of the photocatalyst. Characterization results have shown the presence of MgS on the native TiO2 photocatalyst. The optimization of MgS-TiO2 formulation was conducted, wherein the MgS and TiO2 ratio of 0.5 wt % has been shown to give the highest methanol yield of 229.1 μmol/g·h. The photocatalytic parameter optimization results showed that temperature and catalyst loading were the most important factors that impacted the photocatalytic process. In contrast, reaction time had the least significant effect on the CO2 photocatalytic reduction to methanol. This concludes that the MgS-TiO2 photocatalyst has potential and can be used for the photocatalytic reduction of CO2 to methanol.

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Section: Characterization Of Mgs-tio2supporting

confidence: 85%

Section: Characterization Of Mgs-tio2supporting

confidence: 83%

“…al. (2017) [20]. MgS-TiO2 showed a significant decrease in the transmittance peak compared to TiO2 within 1000-2300 cm −1 wavelength range.…”

Section: Characterization Of Mgs-tio2mentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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Enhanced Effect of Metal Sulfide Doping (MgS-TiO2) Nanostructure Catalyst on Photocatalytic Reduction of CO2 to Methanol

et al. 2023

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Desulfurization through Photocatalytic Oxidation: A Critical Review

et al. 2020

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Fuel oil, the most important strategic resource, has been widely used in industrial applications. However, the sulfur‐containing compounds in fuel oil also present humanity with huge environmental issues and health concerns due to the hazardous combustion waste. To address this problem, the low vulcanization of fuel production technology has been intensively explored. Compared with traditional hydrodesulfurization technology, the newly emerged photocatalytic desulfurization has the advantages of milder operating conditions, lower energy consumption, and higher efficiency, holding great prospect to achieve deep desulfurization. Though great efforts have been made, the desulfurization catalysts still suffer from inferior light absorption, fast recombination of photocarriers, and poor structure modification. This Review summarizes recent development of photocatalytic desulfurization, including the desulfurization principle, current desulfurization challenges, and corresponding solutions. Particularly, the roles of defect engineering, hybrid coupling, and structure modifications in the enhancement of photocatalytic performance are emphasized. In addition, the photocatalytic desulfurization mechanism is also introduced with the .OH and .O2− radicals as main active species. Finally, some perspectives on the photocatalytic desulfurization are provided, which can further optimize the desulfurization efficiency and guide future photocatalyst design.

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Preparation and Characterization of Mg/TiO2 for Visible Light Photooxidative-Extractive Deep Desulfurization

Cited by 2 publications

References 32 publications

Enhanced Effect of Metal Sulfide Doping (MgS-TiO2) Nanostructure Catalyst on Photocatalytic Reduction of CO2 to Methanol

Enhanced Effect of Metal Sulfide Doping (MgS-TiO2) Nanostructure Catalyst on Photocatalytic Reduction of CO2 to Methanol

Desulfurization through Photocatalytic Oxidation: A Critical Review

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