Ion-exchange route to Au-Cu(x)OS yolk-shell nanostructures with porous shells and their ultrasensitive H2O2 detection.
Ion-exchange route to Au-Cu(x)OS yolk-shell nanostructures with porous shells and their ultrasensitive H2O2 detection.
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DOI：
10.1021/am302546d
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发表时间：
2012-12
影响因子：
9.5
通讯作者：
Lizhen Zhou;Long Kuai;Wenzheng Li;B. Geng
中科院分区：
文献类型：
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作者：
Lizhen Zhou;Long Kuai;Wenzheng Li;B. Geng
本文从Au@Cu(2)O核壳纳米结构出发，通过一种简便的离子交换方法制备了具有多孔壳层的Au-Cu(X)OS蛋黄壳纳米结构。所制备的蛋黄壳纳米结构对H(2)O(2)分子的检测具有极高的灵敏度(5 0.4 1μAμM(-1))和较低的检测下限(0.0 1μM)，且与中空的铜(X)OS纳米球和金纳米粒子相比具有良好的抗干扰能力。因此，所制备的Au-Cu(X)OS蛋黄壳纳米结构在生物医学诊断的超低浓度无酶H(2)O(2)检测中具有潜在的应用价值。
In this letter, Au-Cu(x)OS yolk-shell nanostructures with porous shell are prepared through a facile ion exchange route from Au@Cu(2)O core-shell nanostructures. The as-prepared yolk-shell nanostructures exhibit ultrasensitive enzyme-free detection of H(2)O(2) molecules with higher sensitivity (50.41 μA μM(-1)) and lower detection limit (0.01 μM) as well with excellent anti-interference capacity in comparison with both hollow Cu(x)OS nanospheres and Au nanoparticles. Therefore, the obtained Au-Cu(x)OS yolk-shell nanostructures have potential application in ultralow concentration enzyme-free H(2)O(2) detection for biomedicine diagnosis.