scholarly journals Photocatalytic Activity of Vis-Responsive Ag-Nanoparticles/TiO2 Composite Thin Films Fabricated by Molecular Precursor Method (MPM)

Catalysts ◽  
2013 ◽  
Vol 3 (3) ◽  
pp. 625-645 ◽  
Author(s):  
Likius Daniel ◽  
Hiroki Nagai ◽  
Naoya Yoshida ◽  
Mitsunobu Sato
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Ag Nanoparticles ◽  
Precursor Method ◽  
Composite Thin Films ◽  
Molecular Precursor

Photocatalytic activity and stability of the ZnO-GO composite thin films

2021 ◽  
Author(s):  
C. Bogatu ◽  
S. Gheorghita ◽  
D. Perniu ◽  
C. Obreja ◽  
O. Buiu ◽  
...  
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Composite Thin Films

scholarly journals Photocatalytic Activity of Ag-TiO2 Composites Deposited by Photoreduction under UV Irradiation

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Carlos Díaz-Uribe ◽  
Jose Viloria ◽  
Lorraine Cervantes ◽  
William Vallejo ◽  
Karen Navarro ◽  
...  
Keyword(s):  
Thin Films ◽  
Raman Spectroscopy ◽  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Uv Irradiation ◽  
Ag Nanoparticles ◽  
Nitrate Solution ◽  
Physicochemical Characterization ◽  
Soda Lime Glass ◽  
X Ray

In this work, we synthesized Ag nanoparticles on TiO2 thin films deposited on soda lime glass substrates. Ag nanoparticles were synthesized by photoreduction under UV irradiation silver nitrate solution. X-ray diffraction, Raman spectroscopy, scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) measurements were used for physicochemical characterization. The structural study showed that all samples were polycrystalline, main phases were anatase and rutile, and no additional signals were detected after surface modification. Raman spectroscopy suggested that silver aggregates deposited on the TiO2 films could exhibit the surface plasmon resonance (SPR) phenomenon; XPS and SEM analysis confirmed TiO2 film morphological modification after photoreduction process. Photocatalytic degradation of methylene blue (MB) was studied under UV irradiation in aqueous solution, and, besides, pseudo-first-order model was used to obtain kinetic information about photocatalytic degradation. Results indicated that Ag-TiO2 showed an important increase in photocatalytic activity under UV (from 20% to 35%); finally, Ag-TiO2 thin films had kapp value 2.4 × 10−3 ± 0.003 min−1 of 1.8 times greater than the kapp value 1.3 × 10−4 ± 0.0004 min−1 of TiO2 thin films.

scholarly journals Enhanced photocatalytic activity in Ag-nanoparticle-dispersed BaTiO3 composite thin films: Role of charge transfer

2017 ◽  
Vol 6 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Suwei Zhang ◽  
Bo-ping Zhang ◽  
Shun Li ◽  
Zhicheng Huang ◽  
Chushu Yang ◽  
...  
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Ag Nanoparticle ◽  
Composite Thin Films

Preparation and characterization of TiO2/carbon composite thin films with enhanced photocatalytic activity

2011 ◽  
Vol 335 (1-2) ◽  
pp. 136-144 ◽  
Author(s):  
Raja Sellappan ◽  
Jiefang Zhu ◽  
Hans Fredriksson ◽  
Rafael S. Martins ◽  
Michael Zäch ◽  
...  
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Carbon Composite ◽  
Composite Thin Films

TiO2/SiO2 porous composite thin films: Role of TiO2 areal loading and modification with gold nanospheres on the photocatalytic activity

2016 ◽  
Vol 383 ◽  
pp. 367-374 ◽  
Author(s):  
Irina Levchuk ◽  
Mika Sillanpää ◽  
Chantal Guillard ◽  
Damia Gregori ◽  
Denis Chateau ◽  
...  
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Porous Composite ◽  
Gold Nanospheres ◽  
Composite Thin Films
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