ZrO2 bubbles from core–shell nanoparticles
ZrO2 bubbles from core–shell nanoparticles
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DOI：
10.1039/b210734a
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发表时间：
2003-02
影响因子：
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通讯作者：
A. S. Nair;Renjis T. Tom;V. Suryanarayanan;T. Pradeep
中科院分区：
文献类型：
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作者：
A. S. Nair;Renjis T. Tom;V. Suryanarayanan;T. Pradeep
从核壳Ag@ZrO2（ZrO2 涂层Ag）和Au@ZrO2（ZrO2 涂层Au）纳米颗粒中选择性去除金属核，可产生不同尺寸（厚度和直径）的稳定且可自由悬浮的氧化物纳米气泡。金属核通过一种新发现的反应被去除，其中卤化碳（通常是氯化物）氧化金属核并滤出金属离子。利用金属芯去除过程中表面等离子体激元激发强度的降低和伏安电流的降低来研究该过程。
Selective removal of metal cores from core–shell Ag@ZrO2 (ZrO2 coated Ag) and Au@ZrO2 (ZrO2 coated Au) nanoparticles result in stable and freely suspendable oxide nanobubbles of varying dimensions, both in thickness and in diameter. The metal core is removed by a newly found reaction in which halocarbons, generally chlorides, oxidise the metal core and leach out the metal ions. Reduction in the surface plasmon excitation intensity and decrease in the voltammetric current during metal core removal were used to study the process.