Journal
ELECTROCHIMICA ACTA
Volume 206, Issue -, Pages 259-269Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.04.123
Keywords
Graphitic carbon nitride; Protonation; Hydrogen peroxide; Paracetamol
Categories
Funding
- National Natural Science Foundation of China [21375116]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- research program on the Analytical Methods and Techniques on the Shared Platform of Large-scale Instruments and Equipment in Jiangsu province [BZ 201409]
- Graduate Research and Innovation Projects in Jiangsu Province [KYLX15-1357]
- Chancellor's Research Fellowship Program of the University of Technology, Sydney
- National Computational Infrastructure (NCI)
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In this research, graphitic carbon nitride (g-C3N4) is synthesized through the direct pyrolysis of the melamine, and the pristine g-C3N4 is further treated by sufficient protonation and ultrasonication. The resultant g-C3N4 nanosheets, with two-dimensional thin nature, exhibit enhanced ionic conductivity and large specific surface area. Density function theory (DFT) calculations of the electrical properties of the protonated g-C3N4 nanosheets demonstrate that the higher level of protonation enables g-C3N4 to have better conductivity. In addition, the protonated g-C3N4 nanosheets also show excellent electro-catalytic activity and have been employed as electrochemical sensing platforms for the non-enzymatic electrochemical sensing hydrogen peroxide (H2O2) and the selective determination of paracetamol (PCM). The results demonstrate that the protonated g-C3N4 nanosheets, as sensor materials, achieve superior electrochemical sensing performance. The exfoliated g-C3N4 nanosheets have great potential for application in further sensor development and biomedical analysis. (c) 2016 Elsevier Ltd. All rights reserved.
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