Size induced structural modifications in copper oxide nanoparticles synthesized via laser ablation in liquids
- 15 August 2011
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 110 (4), 043111
- https://doi.org/10.1063/1.3626463
Abstract
Laser induced breakdown at copper-water interface is employed to synthesize copper oxide nanoparticles. Copper forms two stable oxides: monoclinic CuO and cubic Cu2O. The characteristic traits of laser induced plasma at copper-water interface are altered to analyze the size induced structural modifications in these oxides. The properties of laser produced plasma were varied by changing the focusing conditions of the source laser. Tightly focused condition led to formation of CuO of size ≤ 200 nm whereas laser defocusing condition produces nanocolloids of Cu2O of size less than 10 nm. These findings were attributed to high pressure (60 GPa) accompanied by high temperature at tightly focused condition which results in growth of covalent CuO whereas lower pressure (1.3 GPa) and low temperature at defocused condition probably forms symmetric Cu2O.Keywords
This publication has 43 references indexed in Scilit:
- Effect of focusing conditions on synthesis of titanium oxide nanoparticles via laser ablation in titanium–water interfaceApplied Surface Science, 2011
- Generation of Al nanoparticles via ablation of bulk Al in liquids with short laser pulsesOptics Express, 2009
- Ultrafine diamond synthesized by long-pulse-width laserApplied Physics Letters, 2006
- The effect of liquid environment on size and aggregation of gold nanoparticles prepared by pulsed laser ablationJournal of Nanoparticle Research, 2006
- Immiscible silver–nickel alloying nanorods growth upon pulsed-laser induced liquid/solid interfacial reactionChemical Physics Letters, 2003
- Preparation of metal colloids by a laser ablation technique in solution: influence of laser wavelength on the ablation efficiency (II)Journal of Photochemistry and Photobiology A: Chemistry, 2001
- Formation and Size Control of Silver Nanoparticles by Laser Ablation in Aqueous SolutionThe Journal of Physical Chemistry B, 2000
- Carbon nitride nanocrystals having cubic structure using pulsed laser induced liquid–solid interfacial reactionApplied Physics A, 2000
- Laser Photothermal Melting and Fragmentation of Gold Nanorods: Energy and Laser Pulse-Width DependenceThe Journal of Physical Chemistry A, 1999
- Preparation of nano-crystalline diamonds using pulsed laser induced reactive quenchingJournal of Physics: Condensed Matter, 1998