期刊
出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0168-583X(02)01561-6
关键词
nanoparticle; Ni-P alloy; solution precipitation; synchrotron X-rays
By irradiating a solution in electroless Ni deposition using synchrotron X-rays, Ni composite was found to nucleate homogeneously and eventually precipitate in the form of nanoparticles. The size of the nanoparticles precipitated is rather uniform (100-300 nm depending on the applied temperature). By the addition of an organic acid, well-dispersed nanoparticles could be effectively deposited on glass substrate. The hydrated electrons (e(aq)(-)), products of radiolysis of water molecules by synchrotron X-rays, may be responsible for the effective reduction of the metal ions, resulting in homogeneous nucleation and nanoparticle formation. Our results suggest that synchrotron X-ray can be used to induce solution precipitation of nanoparticles and therefore lead to a new method of producing nanostructured particles and coating. (C) 2002 Elsevier Science B.V. All rights reserved.
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