Selective formation of benzo[c]cinnoline by photocatalytic reduction of 2,2′-dinitrobiphenyl using TiO2 and under UV light irradiation

2015 ◽  
Vol 51 (40) ◽  
pp. 8500-8503 ◽  
Author(s):  
Jaspreet Kaur ◽  
Bonamali Pal
Keyword(s):  
Uv Light ◽  
Argon Atmosphere ◽  
Photocatalytic Reduction ◽  
Light Irradiation ◽  
Uv Light Irradiation ◽  
Selective Formation

Photocatalytic reduction of 2,2′-dinitrobiphenyl (25 μmol) using P25-TiO2 under an argon atmosphere and 20 h UV light irradiation selectively produced 23.8 μmol of benzo[c]cinnoline (95%), and 2,2′-biphenyldiamine (5%).

Photocatalytic reduction of Cr(VI) from agricultural soil column leachates using zinc oxide under UV light irradiation

2012 ◽  
Vol 33 (23) ◽  
pp. 2673-2680 ◽  
Author(s):  
R. Delgado-Balderas ◽  
L. Hinojosa-Reyes ◽  
J. L. Guzmán-Mar ◽  
M. T. Garza-González ◽  
U. J. López-Chuken ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Agricultural Soil ◽  
Uv Light ◽  
Soil Column ◽  
Photocatalytic Reduction ◽  
Light Irradiation ◽  
Uv Light Irradiation

Effects of Inorganic Anions on TiO2 Photocatalytic Reduction of BrO3

2012 ◽  
Vol 428 ◽  
pp. 69-72 ◽  
Author(s):  
Rong Shu Zhu ◽  
Fei Tian ◽  
Wen Yi Dong ◽  
Feng Ouyang ◽  
Ling Ling Zhang
Keyword(s):  
Reduction Potential ◽  
Uv Light ◽  
Radical Scavenging ◽  
Inorganic Anions ◽  
Photocatalytic Reduction ◽  
Light Irradiation ◽  
Uv Light Irradiation

The effects of various inorganic anions (SO42−, NO3−, HCO3−/CO32−, Cl− and I−) on the photocatalytic reduction of BrO3- were investigated under UV light irradiation. The effects of the inorganic anions depend strongly on the property of radical scavenging and adsorption. At the concentration of 1.56 μmol/L, NO3−, SO42−, HCO3−/CO32−, Cl− and I− exhibit the property of radical scavenging and promote the reduction of bromate. At higher concentration than 1.56 μmol/L, NO3−, SO42−, and HCO3−/CO32− exhibit the property of adsorption and decrease the promotion of the reduction of bromate. Cl− has little effect on the reduction of bromate, it is due to the ability of the radical scavenging is lower than that of Br−. Only I− has a higher promotion of the reduction of bromate at higher concentration than 15. 64 μmol/L, it is due to the strongly reduction potential E0(•I/ I−).

scholarly journals TiO2-Powdered Activated Carbon (TiO2/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water

Water ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1622
Author(s):  
Xiao-Pin Guo ◽  
Peng Zang ◽  
Yong-Mei Li ◽  
Dong-Su Bi
Keyword(s):  
Activated Carbon ◽  
Natural Organic Matter ◽  
Uv Light ◽  
Sol Gel ◽  
Light Irradiation ◽  
Nano Tio2 ◽  
Uv Light Irradiation ◽  
Adsorption Capacities ◽  
Taste And Odor ◽  
Composite Photocatalysts

2-methylisoborneol (2-MIB) is a common taste and odor compound caused by off-flavor secondary metabolites, which represents one of the greatest challenges for drinking water utilities worldwide. A TiO2-coated activated carbon (TiO2/PAC) has been synthesized using the sol-gel method. A new TiO2/PAC photocatalyst has been successfully employed in photodegradation of 2-MIB under UV light irradiation. In addition, the combined results of XRD, SEM-EDX, FTIR and UV-Vis suggested that the nano-TiO2 had been successfully loaded on the surface of PAC. Experimental results of 2-MIB removal indicated that the adsorption capacities of PAC for 2-MIB were higher than that of TiO2/PAC. However, in the natural organic matter (NOM) bearing water, the removal efficiency of 2-MIB by TiO2/PAC and PAC were 97.8% and 65.4%, respectively, under UV light irradiation. Moreover, it was shown that the presence of NOMs had a distinct effect on the removal of MIB by TiO2/PAC and PAC. In addition, a simplified equivalent background compound (SEBC) model could not only be used to describe the competitive adsorption of MIB and NOM, but also represent the photocatalytic process. In comparison to other related studies, there are a few novel composite photocatalysts that could efficiently and rapidly remove MIB by the combination of adsorption and photocatalysis.

Photocatalytic performance of Cu-doped titania thin films under UV light irradiation

2021 ◽  
Vol 553 ◽  
pp. 149535
Author(s):  
Elisa Moretti ◽  
Elti Cattaruzza ◽  
Cristina Flora ◽  
Aldo Talon ◽  
Eugenio Casini ◽  
...  
Keyword(s):  
Thin Films ◽  
Photocatalytic Performance ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation ◽  
Doped Titania
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