<p>In this study, two carbazole–triazine derivatives with cyanuric acid and melamine cores, namely 2,4,6-tris(4-(9H-carbazole-9-yl)butoxy)-1,3,5-triazine (CB) and N<sup>2</sup>,N<sup>4</sup>,N⁶-tris(4-(9H-carbazole-9-yl)butyl)-1,3,5-triazine-2,4,6-triamine (MB), were synthesized and investigated as electrocatalysts for the electrooxidation of hydrazine, an environmentally benign fuel with high energy density. These organic electrocatalysts were prepared through nucleophilic substitution reactions and structurally characterized by FT-IR, NMR, XRD, SEM, and TEM analyses. Their electrochemical performance was evaluated by cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS). The MB compound exhibited a current density of 16.97&#xa0;mA/cm<sup>2</sup>, which is 7.68&#xa0;mA/cm<sup>2</sup> higher than that of CB. CA and EIS analyses further revealed that MB possesses higher stability and lower charge-transfer resistance than CB. These findings demonstrate that nitrogen-rich carbazole-triazine derivatives are promising metal-free anode electrocatalysts for efficient hydrazine oxidation.</p> Graphical Abstract <p></p>

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Synthesis of 1,3,5-Triazine-Based Star-Shaped Carbazole Derivatives Organic Electrocatalysts and Hydrazine Electrooxidation Performance

  • Fatma Coban,
  • Sefika Kaya,
  • Arif Kivrak,
  • Hilal Kivrak

摘要

In this study, two carbazole–triazine derivatives with cyanuric acid and melamine cores, namely 2,4,6-tris(4-(9H-carbazole-9-yl)butoxy)-1,3,5-triazine (CB) and N2,N4,N⁶-tris(4-(9H-carbazole-9-yl)butyl)-1,3,5-triazine-2,4,6-triamine (MB), were synthesized and investigated as electrocatalysts for the electrooxidation of hydrazine, an environmentally benign fuel with high energy density. These organic electrocatalysts were prepared through nucleophilic substitution reactions and structurally characterized by FT-IR, NMR, XRD, SEM, and TEM analyses. Their electrochemical performance was evaluated by cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS). The MB compound exhibited a current density of 16.97 mA/cm2, which is 7.68 mA/cm2 higher than that of CB. CA and EIS analyses further revealed that MB possesses higher stability and lower charge-transfer resistance than CB. These findings demonstrate that nitrogen-rich carbazole-triazine derivatives are promising metal-free anode electrocatalysts for efficient hydrazine oxidation.

Graphical Abstract