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Updated: Sep 10, 2025
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Oxidation-Enhanced Piezocatalytic Activity in Carbon Nitride-Based Catalysts for Hydrogen and Hydrogen Peroxide
Ying Pan1, Luocheng Liao2, Xinwen Zhang3
1Department of Chemistry, University of Paderborn, 33098, Paderborn, Germany.
Abstract:
Driven by the urgent need for a green, safe, and cost-effective approach to producing H2 and H2O2-both highly valuable in green energy and environmental protection fields-piezocatalysis, which converts mechanical energy into valuable chemicals, has emerged as a promising solution. However, current catalyst systems face challenges due to the need for materials with both a strong piezoelectric effect and favorable catalytic activity. Herein, the construction of an oxidized carbon nitride (g-C3N4) matrix anchored with TiO2 nanoparticles via alkaline hydrothermal treatment is reported. Under ultrasonication, the g-C3N4/TiO2 composite exhibits optimal performance under carefully controlled alkaline hydrothermal conditions. With a low concentration of Ba(OH)2 during hydrothermal treatment, Ba(OH)2 provides an alkaline medium, oxidizing the g-C3N4 species and introducing structural defects into the g-C3N4 framework. The disruption of the g-C3N4 matrix, along with its interaction with TiO2 nanoparticles, enhances the piezoelectric effect. Consequently, the oxidized g-C3N4/TiO2 composite achieves a remarkable H2 production rate of 4427.2 μmol g-1 and an H2O2 production rate of 809.3 μmol g-1 within 1 h without the addition of any sacrificial agents or cocatalysts. This work presents an effective strategy for the structural optimization of g-C3N4-based materials and may inspire new approaches for designing advanced piezocatalysts.
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