Abstract
Anti-replacement reaction between Au nanoparticles and Cu2+ ions is studied under the irradiation of nanosecond laser pulses at a wavelength of 532 nm. It is revealed that high-purity naked Cu nanoclusters, which have an average diameter of 2 nm, can be extracted from CuCl2 solution. The Au nanoparticles are also completely converted to Au3+ and Au+ ions by "hot holes". This is because of the plasmon generated "hot electrons" which overcome the limitation of thermodynamic reaction between the Au nanoparticles and Cu2+ ions. Furthermore, we find that the naked Cu nanoclusters exhibit enhanced electrocatalytic performance 1500 times higher than that of the ligand-protected Cu nanoclusters with similar size to achieve the oxygen reduction reaction.
Original language | English |
---|---|
Pages (from-to) | 18687-18693 |
Number of pages | 7 |
Journal | Journal of Materials Chemistry A |
Volume | 6 |
Issue number | 38 |
DOIs | |
Publication status | Published - 14 Oct 2018 |
ASJC Scopus subject areas
- General Chemistry
- Renewable Energy, Sustainability and the Environment
- General Materials Science