TY - JOUR
T1 - Graphitic carbon nitride
T2 - Effects of various precursors on the structural, morphological and electrochemical sensing properties
AU - Lee, Hui Lin
AU - Sofer, Zdeněk
AU - Mazánek, Vlastimil
AU - Luxa, Jan
AU - Chua, Chun Kiang
AU - Pumera, Martin
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2017/9
Y1 - 2017/9
N2 - Graphitic carbon nitride (g-C3N4) has been discovered very long ago, in the 1830s. g-C3N4, an analogue of graphene, has been of great interest due to the strong electron donor nature of nitrogen present in g-C3N4, which is absent in graphene. Though studies have shown that g-C3N4 can be used as an electrochemical sensing platform for electrochemical study of H2O2, glucose, mercuric ions, nitrobenzene and reduced nicotinamide adenine dinucleotide (NADH), few studies have been conducted to investigate the electrochemical behaviours of g-C3N4 produced by various precursors (bulk condensation pyrolysis of nitrogen-rich precursors): trithiocyanuric acid (C3N4-TC), triazinetrihydrazine (C3N4-TH), cyanuric acid (C3N4-CA), cyanuric chloride (C3N4-CC), dicyandiamide (C3N4-DD) and melamine (C3N4-ME) on important biomarkers: ascorbic acid, dopamine, uric acid and adenine and to observe any enhanced performance over glassy carbon (GC). In this work, the performance of g-C3N4 materials on the electrochemical sensing of biomarkers is analysed with cyclic voltammetry and differential pulse voltammetry techniques. Among the g-C3N4 materials tested, C3N4-TC and C3N4-CA surfaces exhibited lower overpotentials for the electrochemical sensing of the biomarkers as compared to GC. In addition, these two surfaces showed great sensitivity and good linearity for the biomarkers tested. This work provides a good understanding of the electrochemical properties of g-C3N4 materials synthesized from various precursors as well as the effectiveness of the g-C3N4 materials as electrochemical sensing platform.
AB - Graphitic carbon nitride (g-C3N4) has been discovered very long ago, in the 1830s. g-C3N4, an analogue of graphene, has been of great interest due to the strong electron donor nature of nitrogen present in g-C3N4, which is absent in graphene. Though studies have shown that g-C3N4 can be used as an electrochemical sensing platform for electrochemical study of H2O2, glucose, mercuric ions, nitrobenzene and reduced nicotinamide adenine dinucleotide (NADH), few studies have been conducted to investigate the electrochemical behaviours of g-C3N4 produced by various precursors (bulk condensation pyrolysis of nitrogen-rich precursors): trithiocyanuric acid (C3N4-TC), triazinetrihydrazine (C3N4-TH), cyanuric acid (C3N4-CA), cyanuric chloride (C3N4-CC), dicyandiamide (C3N4-DD) and melamine (C3N4-ME) on important biomarkers: ascorbic acid, dopamine, uric acid and adenine and to observe any enhanced performance over glassy carbon (GC). In this work, the performance of g-C3N4 materials on the electrochemical sensing of biomarkers is analysed with cyclic voltammetry and differential pulse voltammetry techniques. Among the g-C3N4 materials tested, C3N4-TC and C3N4-CA surfaces exhibited lower overpotentials for the electrochemical sensing of the biomarkers as compared to GC. In addition, these two surfaces showed great sensitivity and good linearity for the biomarkers tested. This work provides a good understanding of the electrochemical properties of g-C3N4 materials synthesized from various precursors as well as the effectiveness of the g-C3N4 materials as electrochemical sensing platform.
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U2 - 10.1016/j.apmt.2016.09.019
DO - 10.1016/j.apmt.2016.09.019
M3 - Article
AN - SCOPUS:85006955527
SN - 2352-9407
VL - 8
SP - 150
EP - 162
JO - Applied Materials Today
JF - Applied Materials Today
ER -