Adsorption of Thiol-Protected Gold Nanoparticles on TiO2and Their Behavior under UV Light Irradiation

2008 ◽  
Vol 112 (15) ◽  
pp. 5816-5824 ◽  
Author(s):  
Igor Dolamic ◽  
Cyrille Gautier ◽  
Julien Boudon ◽  
Natallia Shalkevich ◽  
Thomas Bürgi
Keyword(s):  
Gold Nanoparticles ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation

scholarly journals Orientation of Chiral Schiff Base Metal Complexes Involving Azo-Groups for Induced CD on Gold Nanoparticles by Polarized UV Light Irradiation

Symmetry ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1094
Author(s):  
Nobumitsu Sunaga ◽  
Tomoyuki Haraguchi ◽  
Takashiro Akitsu
Keyword(s):  
Gold Nanoparticles ◽  
Schiff Base ◽  
Uv Light ◽  
Light Irradiation ◽  
Spatial Features ◽  
Dipole Interactions ◽  
Uv Light Irradiation ◽  
Linearly Polarized ◽  
Chiral Species ◽  
Schiff Base Metal Complexes

In this study, we report the synthesis, characterization, and chiroptical properties of azo-group-containing chiral salen type Schiff base Ni(II), Cu(II), and Zn(II) complexes absorbed on gold nanoparticles (AuNPs) of 10 nm diameters. Induced circular dichroism (CD) around the plasmon region from the chiral species weakly adsorbed on the surface of AuNP were observed when there were appropriate dipole–dipole interactions at the initial states. Spectral changes were also observed by not only cis-trans photoisomerization of azo-groups but also changes of orientation due to Weigert effect of azo-dyes after linearly polarized UV light irradiation. Spatial features were discussed based on dipole-dipole interactions mainly within an exciton framework.

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

Amino acid-templated zinc phosphites: low-dimensional structures, fluorescence, and nonlinear optical properties

2021 ◽  
Author(s):  
Yumei Mao ◽  
Xuehua Dong ◽  
Yuandan Deng ◽  
Jing Li ◽  
Ling Huang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Amino Acid ◽  
Nonlinear Optical ◽  
Uv Light ◽  
Nonlinear Optical Properties ◽  
Light Irradiation ◽  
Blue Fluorescence ◽  
Structure Directing Agent ◽  
Uv Light Irradiation ◽  
Low Dimensional

Two new zinc phosphites were prepared using the amino acid alanine as structure-directing agent. They have tubular and ladder-like structures exhibiting blue fluorescence upon UV light irradiation. Notably, the tubular...

Photodegradation of Polychlorinated Dibenzo-p-dioxins in Liquid Samples by Near UV Light Irradiation

1996 ◽  
Vol 54 (4) ◽  
pp. 331-337 ◽  
Author(s):  
M.Perla Colombini ◽  
Fabio Di Francesco ◽  
Roger Fuoco
Keyword(s):  
Uv Light ◽  
Light Irradiation ◽  
Liquid Samples ◽  
Uv Light Irradiation

scholarly journals Synthesis of Amorphous CS2 by UV Light Irradiation

1997 ◽  
Vol 105 (1219) ◽  
pp. 272-274
Author(s):  
Yutaka TAKAHASHI ◽  
Shigeo KOTAKE ◽  
Toshihiko OHTA ◽  
Akihito MATSUMURO ◽  
Masafumi SENOO
Keyword(s):  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation

CO2gas detection properties of a TIO2/Al2O3heterostructure under UV light irradiation

2015 ◽  
Vol 90 (5) ◽  
pp. 055802 ◽  
Author(s):  
Irmak Karaduman ◽  
Mehmet Demir ◽  
Dilber Esra Yıldız ◽  
Selim Acar
Keyword(s):  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation
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