Ion-Exchange Route to Au鈥揅uxOS Yolk鈥揝hell Nanostructures with Porous Shells and Their Ultrasensitive H2O2 Detection

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• 作者：Lizhen Zhou ; Long Kuai ; Wenzheng Li ; Baoyou Geng
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：December 26, 2012
• 年：2012
• 卷：4
• 期：12
• 页码：6463-6467
• 全文大小：303K
• 年卷期：v.4,no.12(December 26, 2012)
• ISSN：1944-8252

文摘

In this letter, Au鈥揅u_xOS yolk鈥搒hell nanostructures with porous shell are prepared through a facile ion exchange route from Au@Cu₂O core鈥搒hell nanostructures. The as-prepared yolk鈥搒hell nanostructures exhibit ultrasensitive enzyme-free detection of H₂O₂ molecules with higher sensitivity (50.41 渭A 渭M^鈥?) and lower detection limit (0.01 渭M) as well with excellent anti-interference capacity in comparison with both hollow Cu_xOS nanospheres and Au nanoparticles. Therefore, the obtained Au鈥揅u_xOS yolk鈥搒hell nanostructures have potential application in ultralow concentration enzyme-free H₂O₂ detection for biomedicine diagnosis.

Keywords:

Au鈭扖u_xOS yolk鈭抯hell nanostructures; ion exchange; H₂O₂ detection