Chemoselective photocatalytic oxidation of alcohols to aldehydes and ketones by nitromethane on titanium dioxide under violet 400 nm LED light irradiation

2020 ◽  
Vol 18 (12) ◽  
pp. 2326-2330 ◽  
Author(s):  
Azam Rahimi Niaraki ◽  
Mohammad Reza Saraee ◽  
Foad Kazemi ◽  
Babak Kaboudin

In this study, for the first time, nitroalkanes, especially nitromethane, have been used as electron acceptors for the highly chemoselective oxidation of alcohols in the presence of a TiO2 photocatalyst under 400 nm LED irradiation.

2008 ◽  
Vol 112 (32) ◽  
pp. 12425-12431 ◽  
Author(s):  
Shu Yin ◽  
Bin Liu ◽  
Peilin Zhang ◽  
Takeshi Morikawa ◽  
Ken-ichi Yamanaka ◽  
...  

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107233-107238 ◽  
Author(s):  
Xiaohui Wang ◽  
Dahu Baiyila ◽  
Xiaotian Li

A novel macroporous photocatalyst Au@Pd@TiO2has been reported and showed excellent catalytic activity and stability in the aerobic oxidation of alcohols in water at ambient temperature when using air as the oxidizing agent under visible light irradiation.


2016 ◽  
Vol 4 (3) ◽  
pp. 1052-1059 ◽  
Author(s):  
Dan Wu ◽  
Wei Wang ◽  
Tsz Wai Ng ◽  
Guocheng Huang ◽  
Dehua Xia ◽  
...  

Zinc oxysulfide (ZnO0.6S0.4) nanoparticles were prepared and used as an effective visible-light-driven (VLD) photocatalyst for the inactivation of Escherichia coli K-12 for the first time.


2019 ◽  
Vol 15 (2) ◽  
pp. 291-297 ◽  
Author(s):  
Siti Hajar Alias ◽  
Nurul Najidah Mohamed ◽  
Leaw Wai Loon ◽  
Sheela Chandren

Carbon self-doped titanium dioxide (C/TiO2) photocatalyst was synthesized by a simple sol-gel method using titanium isopropoxide as both the titanium precursor and carbon source. The effects of calcination temperatures in the range of 300 to 700 °C to the structure and physicochemical properties of the C/TiO2 were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) coupled with energy dispersive X-ray (EDX), Fourier transform infrared (FTIR) spectroscopy, UV-visible diffuse reflectance (UV-Vis DR) spectroscopy, photoluminescence spectroscopy, N2 adsorption-desorption and X-ray photoelectron spectroscopy (XPS). XPS results proved the presence of self-doped carbon at the interstitial and substitutional lattice of TiO2. The C/TiO2 calcined at 300 and 400 °C (C/TiO2-300 and C/TiO2-400, respectively) showed mesoporous characteristic and large surface area of about 100 m2 g-1. The C/TiO2 photocatalysts were then tested in the photo-oxidation of styrene under visible light irradiation with aqueous hydrogen peroxide as the oxidizing agent. The C/TiO2 photocatalysts were successfully activated under the irradiation of visible light, where C/TiO2-300 and C/TiO2-400 showed the highest total concentration of products (benzaldehyde and styrene oxide) at 1.1 mmol and 1.0 mmol, respectively.For video presentation, kindly please visit this link:


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