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Updated: Jan 12, 2026

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
Mechanistic Analysis of the Synergic Enhancement Effect of Doping and Defects on Hydrogen Peroxide Production in
Xinyu Zou1, Suhua Chen2, Min Cheng1
1College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China.
Abstract:
Graphitic carbon nitride (g-C3N4) assisted photocatalytic hydrogen peroxide (H2O2) production has garnered significant interest due to its environmental sustainability. This study successfully synthesizes the crystalline material NaLi-CN via a simple molten salt-assisted method, simultaneously introducing Na+ dopant alongside nitrogen vacancies and cyanide groups. The obtained photocatalyst exhibits exceptional H2O2 production capacity, reaching 25.65 mmol g-1 h-1, representing a 113-fold enhancement over pristine g-C3N4. This performance enhancement stems from its highly crystalline structure, which effectively reduces the interlayer spacing and significantly promotes in-plane and interlayer electron migration. Moreover, a synergistic effect between Na+ dopant and defect structures not only broadens the light absorption range but also significantly enhances charge separation efficiency. Interestingly, NaLi-CN enables simultaneous activation of multiple reaction pathways in the presence of a sacrificial agent, collectively suppressing competing reactions and dramatically enhancing two-electron oxygen reduction reaction selectivity. This study elucidates the synergic role of doping and defects in crystalline carbon nitride and provides valuable insights for designing efficient photocatalytic systems by optimizing the H2O2 production reaction pathways.
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