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Issue 15, 2015
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Nanoporous copper oxide ribbon assembly of free-standing nanoneedles as biosensors for glucose

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Abstract

Inspired by a sequential hydrolysis–precipitation mechanism, morphology-controllable hierarchical cupric oxide (CuO) nanostructures are facilely fabricated by a green water/ethanol solution-phase transformation of Cux(OH)2x−2(SO4) precursors in the absence of any organic capping agents and without annealing treatment in air. Antlerite Cu3(OH)4(SO4) precursors formed in a low volume ratio between water and ethanol can transform into a two-dimensional (2D) hierarchical nanoporous CuO ribbon assembly of free-standing nanoneedle building blocks and hierarchical nanoneedle-aggregated CuO flowers. Brochantite Cu4(OH)6(SO4) precursors formed in a high volume ratio between water and ethanol can transform into hierarchical nanoplate-aggregated CuO nanoribbons and nanoflowers. Such 2D hierarchical nanoporous CuO ribbons serving as a promising electrode material for nonenzymatic glucose detection show high sensitivity, a low detection limit, fast amperometric response and good selectivity. Significantly, this green water-induced precursor-hydrolysis method might be used to control effectively the growth of other metal oxide micro-/nanostructures.

Graphical abstract: Nanoporous copper oxide ribbon assembly of free-standing nanoneedles as biosensors for glucose

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Publication details

The article was received on 27 Mar 2015, accepted on 20 May 2015 and first published on 20 May 2015


Article type: Paper
DOI: 10.1039/C5AN00609K
Citation: Analyst, 2015,140, 5205-5215

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    Nanoporous copper oxide ribbon assembly of free-standing nanoneedles as biosensors for glucose

    S. Sun, Y. Sun, A. Chen, X. Zhang and Z. Yang, Analyst, 2015, 140, 5205
    DOI: 10.1039/C5AN00609K

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