期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 898, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2021.115621
关键词
Graphite carbon nitride film; Surface texture and morphology; Electrochemical characterization
资金
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET) [PIO15920150100013CO]
- SeCyT-UNC [33620180100222CB, PICT-2015-2477]
This study presents a comprehensive analysis of the morphology and electrochemical properties of graphite carbon nitride/highly oriented pyrolytic graphite electrode surface for hydrogen peroxide reduction reaction. Results indicate that graphite carbon nitride is a valuable electroactive material that can enhance the electro-activity of other cheaper carbonaceous substrates.
In the present work, we present a complete study about morphology and electrochemical properties of graphite carbon nitride (g-C3N4)/highly oriented pyrolytic graphite (HOPG) electrode surface for hydrogen peroxide reduction reaction (HPRR). First, the size distribution of exfoliated g-C3N4 particles in suspension was studied. By drop-casting technique, the film on the HOPG surface was deposited and the size distribution of conglomerates on the surface was studied. Different microscopy and image processing techniques were combined to analyse the surface landscape. Properties like morphology, texture, thickness, local composition and covered area by the discontinuous film were also analysed. By electrochemical techniques surface properties like wetting area and roughness factor were determined. For HPRR the electroactive area, number and types of active sites and their rotation frequency were studied. These studies suggest that g-C3N4 is a useful electroactive material for HPRR, which can be used to enhance the electro-activity of other cheaper carbonaceous substrates.
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