In this work, graphitic carbon nitride (g-C₃N₄) supporting finely dispersed Au nanoparticles is developed as a simple and efficient photocatalyst for H₂O₂ production under visible light irradiation. Au nanoparticle cocatalyst remarkably enhances photocatalytic activity of C₃N₄ for H₂O₂ production. Due to the inert nature to catalyze the decomposition of H₂O₂, Au/C₃N₄ also exhibits stable H₂O₂ evolution rate. It is of great interest that the maximal H₂O₂ production activity is reached at the loading amount of Au as low as 0.01%, revealing the great catalytic efficacy of highly dispersed Au cocatalyst during the photocatalytic H₂O₂ synthesis and the possibility to produce concentrated H₂O₂ using C₃N₄ with extremely low Au loading amount. The in situ electron spin resonance studies reveal that the H₂O₂ is produced through direct 2e⁻ oxygen reduction over Au/C₃N₄ photocatalyst.

在这项工作中，支持细分散的Au纳米颗粒的石墨氮化碳（gC ₃ N ₄）被开发为一种在可见光照射下生产H ₂ O ₂的简单有效的光催化剂。金纳米颗粒助催化剂显着增强了C ₃ N ₄对H ₂ O ₂产生的光催化活性。由于具有催化H ₂ O ₂分解的惰性，Au / C ₃ N ₄也表现出稳定的H ₂ O ₂析出速率。最大的H ₂ O引起了极大的兴趣Au的添加量低至0.01％时达到了_2的生产活性，这表明高分散的Au助催化剂在光催化H ₂ O ₂合成过程中具有巨大的催化效力，并有可能使用C ₃ N ₄产生浓H ₂ O _2。极低的金负载量。原位电子自旋共振研究揭示，在H ₂ ö ₂通过直接2E产生^-氧还原过的Au / C ₃ Ñ ₄光催化剂。