Cost-effective three-dimensional graphene/Ag aerogel composite for high-performance sensing
Date
2016
Authors
Lou, X.
Zhu, C.
Pan, H.
Ma, J.
Zhu, S.
Zhang, D.
Jiang, X.
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Journal article
Citation
Electrochimica Acta, 2016; 205:70-76
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Abstract
A cost-effective new approach was developed for the fabrication of a three-dimensional reduced graphene oxide/Ag nanoparticle composite, where Ag nanoparticles of 18.0 ± 1.8 nm in diameter were uniformly dispersed throughout a reduced graphene oxide aerogel. When used as a non-enzymatic sensor, the composite demonstrated excellent electrocatalytic performance toward the detection of H2O2, i.e. a broad linear range of 0.016-27 mmol L-1, high sensitivity of 419.7 μA mmol-1 L cm-2, low detection limit of 6.8 μmol L-1 and superior selectivity against impurities such as citric acid, ascorbic acid and glucose. The superior performance is ascribed to the large interfacial area provided by the three-dimensional aerogel and the enhanced electron transfer by a great number of the fine Ag nanopaticles uniformly dispersed throughout the aerogel.
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Data source: Supplementary data, http://www.sciencedirect.com/science/article/pii/S0013468616309392
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Copyright 2016 Elsevier