Plasmon-engineered anti-replacement synthesis of naked Cu nanoclusters with ultrahigh electrocatalytic activity
Plasmon-engineered anti-replacement synthesis of naked Cu nanoclusters with ultrahigh electrocatalytic activity
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等离子体工程反取代合成具有超高电催化活性的裸铜纳米团簇
DOI:
10.1039/c8ta06789a
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发表时间:
2018-10
影响因子:
11.9
通讯作者:
Siu Fung Yu
中科院分区:
文献类型:
--
作者:
Shusheng Pan;Xian Zhang;Wei Lu;Siu Fung Yu
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.
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