Bismuth silicates: preparation by pulsed laser ablation and photocatalytic activity

2021 ◽  
Author(s):  
Aleksandra Golubovskaya ◽  
Elena Fakhrutdinova ◽  
Valery Svetlichnyi
Keyword(s):  
Photocatalytic Activity ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation

ZnO:Au nanocomposites with high photocatalytic activity prepared by liquid-phase pulsed laser ablation

2021 ◽  
Vol 133 ◽  
pp. 106533
Author(s):  
Chujun Yao ◽  
Wenguang Chen ◽  
Lequn Li ◽  
Kai Jiang ◽  
Zhigao Hu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Laser Ablation ◽  
Liquid Phase ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
High Photocatalytic Activity

scholarly journals Continuous Synthesis of Ag/TiO2 Nanoparticles with Enhanced Photocatalytic Activity by Pulsed Laser Ablation

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Rui Zhou ◽  
Shengdong Lin ◽  
Huixin Zong ◽  
Tingting Huang ◽  
Fengping Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Electron Microscope ◽  
Laser Ablation ◽  
Photoelectron Spectroscopy ◽  
Uv Light ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Silver Clusters ◽  
X Ray ◽  
Synthesis Strategy

A facile and environmental friendly synthesis strategy based on pulsed laser ablation has been developed for potential mass production of Ag-loaded TiO2 (Ag/TiO2) nanoparticles. By sequentially irradiating titanium and silver target substrates, respectively, with the same 1064 nm 100 ns fiber laser, Ag/TiO2 particles can be fabricated. A postannealing process leads to the crystallization of TiO2 to anatase phase with high photocatalytic activity. The phase composition, microstructure, and surface state of the elaborated Ag/TiO2 are characterized by X-ray diffraction (XRD), energy dispersive X-ray (EDX), field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), and X-ray photoelectron spectroscopy (XPS) techniques. The results suggest that the presence of silver clusters deposited on the surface of TiO2 nanoparticles. The nanostructure is formed through laser interaction with materials. Photocatalytic activity evaluation shows that silver clusters could significantly enhance the photocatalytic activity of TiO2 in degradation of methylene blue (MB) under UV light irradiation, which is attributed to the efficient electron traps by Ag clusters. Our developed Ag/TiO2 nanoparticles synthesized via a straightforward, continuous, and green pathway could have great potential applications in photocatalysis.

Observations on the growth of YBa2Cu3O7-δ thin films on MgO by pulsed-laser ablation

1991 ◽  
Vol 49 ◽  
pp. 1068-1069
Author(s):  
M. Grant Norton ◽  
C. Barry Carter
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Laser Ablation ◽  
Substrate Surface ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Laser Ablation Process ◽  
Deposition Parameters

Pulsed-laser ablation has been widely used to produce high-quality thin films of YBa2Cu3O7-δ on a range of substrate materials. The nonequilibrium nature of the process allows congruent deposition of oxides with complex stoichiometrics. In the high power density regime produced by the UV excimer lasers the ablated species includes a mixture of neutral atoms, molecules and ions. All these species play an important role in thin-film deposition. However, changes in the deposition parameters have been shown to affect the microstructure of thin YBa2Cu3O7-δ films. The formation of metastable configurations is possible because at the low substrate temperatures used, only shortrange rearrangement on the substrate surface can occur. The parameters associated directly with the laser ablation process, those determining the nature of the process, e g. thermal or nonthermal volatilization, have been classified as ‘primary parameters'. Other parameters may also affect the microstructure of the thin film. In this paper, the effects of these ‘secondary parameters' on the microstructure of YBa2Cu3O7-δ films will be discussed. Examples of 'secondary parameters' include the substrate temperature and the oxygen partial pressure during deposition.

scholarly journals Doping nanoparticles using pulsed laser ablation in a liquid containing the doping agent

2019 ◽  
Vol 1 (10) ◽  
pp. 3963-3972 ◽  
Author(s):  
Arsène Chemin ◽  
Julien Lam ◽  
Gaétan Laurens ◽  
Florian Trichard ◽  
Vincent Motto-Ros ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Doping Agent ◽  
Laser Ablation In Liquids ◽  
Dope Nanoparticles

While doping is crucial for numerous technological applications, its control remains difficult especially when the material is reduced down to the nanometric scale. We suggest a new way to dope nanoparticles using laser ablation in liquids.

scholarly journals Template-free, single step preparation of hollow Coo nano spheres using pulsed laser ablation in liquid environment

2021 ◽  
pp. 103317
Author(s):  
Muidh Alheshibri ◽  
Sultan Akhtar ◽  
Abbad Al Baroot ◽  
Khaled Elsayed ◽  
Hassan S Al Qahtani ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Single Step ◽  
Laser Ablation In Liquid ◽  
Liquid Environment ◽  
Template Free
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