scholarly journals Dual modification of TiO2 nanorod arrays with SiW11Co and Ag nanoparticles for enhanced photocatalytic activity under simulated sunlight

2019 ◽  
Vol 18 (11) ◽  
pp. 2804-2813 ◽  
Author(s):  
Dandan Yan ◽  
Wencheng Fang ◽  
Fengyan Li ◽  
Zhanbin Jin ◽  
Lin Xu
Keyword(s):  
Photocatalytic Activity ◽  
Ag Nanoparticles ◽  
Nanorod Arrays ◽  
Simulated Sunlight ◽  
Ag Nanoparticle ◽  
Tio2 Nanorod ◽  
Tio2 Nanorod Arrays ◽  
Excellent Photocatalytic Activity

SiW11Co and Ag nanoparticle co-modified TiO2 nanorods were successfully synthesized. The resulting TNRs/SiW11Co/Ag composite exhibited excellent photocatalytic activity and stability for the degradation of NO2 due to synergistic promotion effects.

The effect of Ag nanoparticle loading on the photocatalytic activity of TiO2 nanorod arrays

2010 ◽  
Vol 485 (1-3) ◽  
pp. 171-175 ◽  
Author(s):  
Wilson Smith ◽  
Shun Mao ◽  
Ganhua Lu ◽  
Alexis Catlett ◽  
Junhong Chen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Nanorod Arrays ◽  
Ag Nanoparticle ◽  
Tio2 Nanorod ◽  
Tio2 Nanorod Arrays

scholarly journals A Facile and Controllable Vapor-Phase Hydrothermal Approach to Anionic S2−-doped TiO2 Nanorod Arrays with Enhanced Photoelectrochemical and Photocatalytic Activity

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1776
Author(s):  
Hai Yu ◽  
Miao Zhang ◽  
Yanfen Wang ◽  
Haocheng Yang ◽  
Yanmei Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Vapor Phase ◽  
Sulfur Source ◽  
Nanorod Arrays ◽  
Doped Tio2 ◽  
Energy Devices ◽  
Bare Tio2 ◽  
Tio2 Nanorod ◽  
Tio2 Nanorod Arrays

Anionic S2−-doped TiO2 nanorod arrays (S2−-TiO2) were synthesized by a facile and controllable vapor-phase hydrothermal (VPH) approach based on the sulfur source of H2S gas. After the VPH treatment of TiO2 nanorod arrays (TNA), the isolated O2− species replaces the S2− ion in TiO2 (TiO2−xSx). The structural, morphological, optical, compositional, photocatalytic and photoelectrochemical (PEC) properties of the obtained samples were investigated in detail. It was found that S2−-TiO2 can enhance the separation rate of electron–hole pairs, improve the absorption of visible light, and augment the photocatalytic and photoelectrochemical properties. Anionic S2− doping can significantly adjust the absorption cut-off wavelength (409.5–542.5 nm) and shorten the bandgap (3.05-2.29 eV) of TNA. For the degradation of methylene orange (MO) under mercury lamp light, the 0.24 At%S2−-TiO2 (0.24S2−-TiO2) sample exhibited the best photogradation efficiency of 73% in 180 min compared to bare TiO2 (46%). The 0.24S2−-TiO2 showed the highest photocurrent of 10.6 μA/cm2, which was 1.73 times higher than that of bare TiO2 (6.1μA/cm2). The results confirmed that the visible light absorption, photocurrent and photocatalytic activity optimization of TNA are closely related not only to anionic S2−-doped but also different ratios of anionic S2−-doped. It is noteworthy that the VPH approach is very promising for applications in low cost and highly efficient ion doping into nanomaterials for energy devices.

Catalytic Membrane and their Photocatalytic Properties

2012 ◽  
Vol 204-208 ◽  
pp. 4215-4218
Author(s):  
Chen Yang Hu ◽  
Xiao Bo Zhang ◽  
Xiao Yun Li ◽  
Hui Chen
Keyword(s):  
Escherichia Coli ◽  
Photocatalytic Activity ◽  
Ag Nanoparticles ◽  
Solution Method ◽  
Antibacterial Effect ◽  
Catalytic Membrane ◽  
Ag Nanoparticle ◽  
Excellent Photocatalytic Activity ◽  
Titanate Nanowires ◽  
Photocatalytic Films

A solution method was developed to synthesized heteronanostructure of Ag nanoparticles on titanate nanowires, and then flexible photocatalytic Films were made by these nanowires. The nanowire is about 50 nm in diameter, several hundreds micrometers in length. The size of the Ag nanoparticle grafted on the nanowire is about 50 to 100 nm. The nanowire Film showed excellent photocatalytic activity to decompose the methamidophos and satisfactory antibacterial effect to kill Escherichia coli.

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