Abstract
This report compares the electroanalytical performances of single- (G-SL), few- (G-FL), and multilayer graphene (G-ML), graphite microparticles, and edge-plane pyrolytic graphite electrodes in terms of sensitivity, linearity, and repeatability. We show that in the case of differential pulse voltammetric (DPV) detection of ascorbic acid, the sensitivity of a G-SL electrode is about 30% greater than that of G-ML and about 40% greater than graphite microparticles. However, in the case of DPV determination of uric acid, sensitivity is practically the same for all (G-SL, G-FL, and G-ML) and, importantly, the graphite microparticles do provide higher sensitivity than graphenes do for this analyte. Graphenes also do not provide a significant advantage in terms of repeatability. We pose the question of whether the efforts leading to the bulk method of producing single-layer graphene are justified for electroanalytical applications.
| Original language | English |
|---|---|
| Pages (from-to) | 8367-8370 |
| Number of pages | 4 |
| Journal | Analytical Chemistry |
| Volume | 82 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 2010 Oct 1 |
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All Science Journal Classification (ASJC) codes
- Analytical Chemistry
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Single-, few-, and multilayer graphene not exhibiting significant advantages over graphite microparticles in electroanalysis. / Goh, Madeline Shuhua; Pumera, Martin.
In: Analytical Chemistry, Vol. 82, No. 19, 01.10.2010, p. 8367-8370.Research output: Contribution to journal › Article
TY - JOUR
T1 - Single-, few-, and multilayer graphene not exhibiting significant advantages over graphite microparticles in electroanalysis
AU - Goh, Madeline Shuhua
AU - Pumera, Martin
PY - 2010/10/1
Y1 - 2010/10/1
N2 - This report compares the electroanalytical performances of single- (G-SL), few- (G-FL), and multilayer graphene (G-ML), graphite microparticles, and edge-plane pyrolytic graphite electrodes in terms of sensitivity, linearity, and repeatability. We show that in the case of differential pulse voltammetric (DPV) detection of ascorbic acid, the sensitivity of a G-SL electrode is about 30% greater than that of G-ML and about 40% greater than graphite microparticles. However, in the case of DPV determination of uric acid, sensitivity is practically the same for all (G-SL, G-FL, and G-ML) and, importantly, the graphite microparticles do provide higher sensitivity than graphenes do for this analyte. Graphenes also do not provide a significant advantage in terms of repeatability. We pose the question of whether the efforts leading to the bulk method of producing single-layer graphene are justified for electroanalytical applications.
AB - This report compares the electroanalytical performances of single- (G-SL), few- (G-FL), and multilayer graphene (G-ML), graphite microparticles, and edge-plane pyrolytic graphite electrodes in terms of sensitivity, linearity, and repeatability. We show that in the case of differential pulse voltammetric (DPV) detection of ascorbic acid, the sensitivity of a G-SL electrode is about 30% greater than that of G-ML and about 40% greater than graphite microparticles. However, in the case of DPV determination of uric acid, sensitivity is practically the same for all (G-SL, G-FL, and G-ML) and, importantly, the graphite microparticles do provide higher sensitivity than graphenes do for this analyte. Graphenes also do not provide a significant advantage in terms of repeatability. We pose the question of whether the efforts leading to the bulk method of producing single-layer graphene are justified for electroanalytical applications.
UR - http://www.scopus.com/inward/record.url?scp=77957323456&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77957323456&partnerID=8YFLogxK
U2 - 10.1021/ac101996m
DO - 10.1021/ac101996m
M3 - Article
C2 - 20822162
AN - SCOPUS:77957323456
VL - 82
SP - 8367
EP - 8370
JO - Analytical Chemistry
JF - Analytical Chemistry
SN - 0003-2700
IS - 19
ER -