Issue 81, 2015
From the journal:

RSC Advances

New nanocomposite-graphene pastes based stochastic microsensors

Raluca-Ioana Stefan-van Staden,*ab   Livia Alexandra Gugoasa,ab   Crina Socacic  and  Alexandru Radu Birisc  

* Corresponding authors

a Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 202 Splaiul Independentei Str., Bucharest-6, Romania
E-mail: ralucavanstaden@gmail.com
Fax: +4021 3163113
Tel: +4075 1507779

b Faculty of Applied Chemistry and Material Science, Politehnica University of Bucharest, Bucharest, Romania

c National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, Cluj-Napoca, Romania

Abstract

Three new stochastic sensors based on metal nanocomposites-graphene pastes modified with protoporphyrin-IX were designed. PPAR-γ was chosen as model analyte to prove the stochastic behavior of the sensors. The sensor based on PIX/graphene-Au-3 showed the highest sensitivity for the assay of PPAR-γ (1.94 × 107 s−1 g L−1) and the lowest determination limit (20 pg mL−1). The sensors were stable for more than three months (RSD values of their sensitivity did not exceeded 1.0%). They could be reliably used for the assay of PPAR-γ in cerebrospinal liquid with recovery values higher than 97.0%.

Graphical abstract: New nanocomposite-graphene pastes based stochastic microsensors

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Article information

DOI
https://doi.org/10.1039/C5RA13054A
Article type
Paper
Submitted
04 Jul 2015
Accepted
28 Jul 2015
First published
03 Aug 2015

RSC Adv., 2015,5, 66185-66191

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New nanocomposite-graphene pastes based stochastic microsensors

R. Stefan-van Staden, L. A. Gugoasa, C. Socaci and A. R. Biris, RSC Adv., 2015, 5, 66185 DOI: 10.1039/C5RA13054A

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