Hydrogen peroxide is an environment-friendly reactive oxygen species and a significant green oxidant. However, the highly efficient and sustainable production of H₂O₂ remains a challenge. Herein, we demonstrated a state-of-the-art photocatalytic method for H₂O₂ production using an optimal tubular graphic carbon nitride (TCN)/ZnIn₂S₄ (ZIS) heterojunction. Within 3 h, a H₂O₂ production rate of 2.77 mmol g⁻¹ h⁻¹ was achieved by the TCN/ZIS heterojunction, which is 3.4- and 23.1-fold higher than that obtained by its individual TCN and ZIS components, respectively. Experimental results showed that the excellent photoactivity of TCN/ZIS is mainly due to the formation of heterojunction, which improves the charge separation ability and thereby promotes the proton-coupled electron transfer by initially reducing O₂ to ·O₂⁻ and subsequently generating H₂O₂. This work has developed an efficient and green strategy for H₂O₂ production with scientific and practical value for environmental remediation.

过氧化氢是一种环境友好型活性氧，是一种重要的绿色氧化剂。_{然而，H 2} O ₂的高效和可持续生产仍然是一个挑战。在此，我们展示了一种使用最佳管状图形氮化碳 (TCN)/ZnIn ₂ S ₄ (ZIS) 异质结生产 H ₂ O ₂的最先进的光催化方法。3小时内，H ₂ O ₂产率为2.77 mmol g ^-1 h ^-1通过 TCN/ZIS 异质结实现，分别比其单独的 TCN 和 ZIS 组件高 3.4 倍和 23.1 倍。实验结果表明，TCN/ZIS优异的光活性主要是由于异质结的形成，提高了电荷分离能力，从而通过最初将O ₂还原为·O ₂ ^-并随后产生H ₂来促进质子耦合电子转移。氧₂。_{该工作为H 2} O ₂的生产制定了高效、绿色的策略，对环境修复具有科学和实用价值。