Selective Photocatalytic Oxidation of Benzyl Alcohol to Benzaldehyde or C–C Coupled Products by Visible-Light-Absorbing Quantum Dots

2018 ◽  
Vol 2 (1) ◽  
pp. 92-96 ◽  
Author(s):  
Kevin P. McClelland ◽  
Emily A. Weiss
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Benzyl Alcohol ◽  
Photocatalytic Oxidation ◽  
Oxidation Of Benzyl Alcohol

Effect of Surface Treatment on the Selective Photocatalytic Oxidation of Benzyl Alcohol into Benzaldehyde by O2 on TiO2 Under Visible Light

2010 ◽  
Vol 53 (7-10) ◽  
pp. 578-583 ◽  
Author(s):  
Shinya Higashimoto ◽  
Kohei Okada ◽  
Tomoki Morisugi ◽  
Masashi Azuma ◽  
Hiroyoshi Ohue ◽  
...  
Keyword(s):  
Visible Light ◽  
Surface Treatment ◽  
Benzyl Alcohol ◽  
Photocatalytic Oxidation ◽  
Oxidation Of Benzyl Alcohol ◽  
Effect Of Surface

scholarly journals Visible-light Responsive Cu-MOF-NH 2 for Highly Efficient Aerobic Photocatalytic Oxidation of Benzyl Alcohol

2021 ◽  
Author(s):  
Samira Abdel-Azim ◽  
Delvin Aman ◽  
eric van steen ◽  
Howaida Abd El Salam
Keyword(s):  
Visible Light ◽  
Benzyl Alcohol ◽  
Photocatalytic Oxidation ◽  
Order Kinetic ◽  
Electron Hole ◽  
Oxidation Of Benzyl Alcohol ◽  
Order Kinetic Model ◽  
Ft Ir ◽  
Adsorption Desorption ◽  
Alcohol Conversion

Abstract The current study focuses on the photocatalytic oxidation of benzyl alcohol in acetonitrile under air bubbling conditions comparing titania-based materials, Cu-MOF, and Cu-MOF-NH2 as semiconductor photocatalysts. The catalysts were characterized by XRD, N2 adsorption-desorption, FT-IR, Raman spectroscopy, and TEM. The photocatalytic benzyl alcohol conversion reached ~ 100% after exposing the four prepared catalysts to a 125W mercury lamp for up to 240 min. Benzaldehyde is formed with a moderate selectivity (after a reaction time of 60 min. ca. 30% over the titania-based catalysts 37%, 45% over Cu-MOF, and Cu-MOF-NH2, respectively). The formation of electron-hole pairs at the surface of the semiconductor nanoparticles followed by oxidation reaction was the suggested mechanism. A first-order kinetic model was observed for the photocatalytic oxidation of the investigated alcohols, and the rate constants were calculated. According to preliminary research, decorating MOF linker by amine (MOF-NH2) could improve visible-light harvesting, charge separation, and electron transport of the resulting catalyst, resulting in increased photocatalytic activity. The current work offers some direction for the development of MOF-based photocatalysts for organic synthesis.

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