Preparation of zinc oxide nanorods using pulsed laser ablation in water media at high temperature

2006 ◽  
Vol 300 (2) ◽  
pp. 612-615 ◽  
Author(s):  
Yoshie Ishikawa ◽  
Yoshiki Shimizu ◽  
Takeshi Sasaki ◽  
Naoto Koshizaki
2018 ◽  
Vol 167 ◽  
pp. 04008 ◽  
Author(s):  
Luisa D’Urso ◽  
Salvatore Spadaro ◽  
Martina Bonsignore ◽  
Saveria Santangelo ◽  
Giuseppe Compagnini ◽  
...  

Zinc oxide with wide direct band gap and high exciton binding energy is one of the most promising materials for ultraviolet (UV) light-emitting devices. It further exhibits good performance in the degradation of non-biodegradable pollutants under UV irradiation. In this work, zinc oxide (ZnO) and zinc oxide/gold (ZnO/Au) nanocolloids are prepared by picosecond pulsed laser ablation (ps-PLA), using a Zn and Au metallic targets in water media at room temperature (RT) and 80°C. ZnO and Au nanoparticles (NPs) with size in the 10–50 nm range are obtained at RT, while ZnO nanorods (NRs) are formed when water is maintained at 80°C during the ps-PLA process. Au NPs, added to ZnO colloids after the ablation process, decorate ZnO NRs. The crystalline phase of all ZnO nanocolloids is wurtzite. Methylene blue dye is used to investigate the photo-catalytic activity of all the synthesised nanocolloids, under UV light irradiation.


2021 ◽  
Vol 1021 ◽  
pp. 171-180
Author(s):  
Munaf S. Majeed ◽  
Rabea Q. Nafil ◽  
Marwa F. Abdul Jabbar ◽  
Kadhim H. Suffer

We prepared Zinc oxide nanomaterial employing PLA (pulsed laser ablation) technique. A pure Zn target was immersed in ultra-pure water (UPW) and it was subjected to several pulses (1st. and 2nd. harmonic) of the pumping Nd: YAG laser. The influence of changing laser’s wavelength (1064, 532) nm on the characterization of the produced nanoparticles was studied. The results obtained from studying the structure, topography, and morphology of the product showed that the particles have a hexagonal shape. Also, changing the wavelength of the laser from 532nm to 1064nm leads to size reduction and density increasing of the nanoparticles.


Author(s):  
A. Rayerfrancis ◽  
Bhargav P. Balaji ◽  
N. Ahmed ◽  
C. Balaji

Vertically aligned zinc oxide nanorods were grown on low and high temperature deposited aluminium doped zinc oxide seed layer by hydrothermal method and annealed to improve crystallinity. The morphology of the seed layer and the grown nanorods were studied by field emission scanning electron microscopy characterization technique. The properties of the zinc oxide nanorods were analyzed using laser spectroscopic studies. Resonant Raman spectroscopy reveals the unique increase in the A1(LO) mode of vibration with increase in count. The luminescence property of the nanorods was studied with photoluminescence spectrometer. The vertically aligned zinc oxide nanorods show, the very high band edge emission in the ultraviolet region of the electromagnetic spectrum. DOI: 10.21883/FTP.2017.12.45186.8562


2010 ◽  
Vol 101 (4) ◽  
pp. 585-589 ◽  
Author(s):  
Alexander V. Bulgakov ◽  
Anton B. Evtushenko ◽  
Yuri G. Shukhov ◽  
Igor Ozerov ◽  
Wladimir Marine

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