Photocatalytic hydrogen peroxide (H₂O₂) production from O₂ and H₂O is an ideal process for so-la-to-chemical energy conversion. Herein, ZnO nanorods are prepared via a simple hydrothermal method for photocatalytic H₂O₂ production. The ZnO nanorods exhibit varied performance with different calcination temperatures. Benefiting from calcination, the separation efficiency of photo-induced carriers is significantly improved, leading to the superior photocatalytic activity for H₂O₂ production. The H₂O₂ produced by ZnO calcined at 300 °C is 285 μmol L^-1, which is over 5 times larger than that produced by untreated ZnO. This work provides an insight into photocatalytic H₂O₂ production mechanism by ZnO nanorods, and presents a promising strategy to H₂O₂ production.

由O ₂和H ₂ O光催化生产过氧化氢（H ₂ O ₂ ）是一种理想的化学能转化过程。本文通过简单的水热法制备了 ZnO 纳米棒，用于光催化 H ₂ O ₂的生产。ZnO 纳米棒在不同的煅烧温度下表现出不同的性能。得益于煅烧，光致载流子的分离效率显着提高，从而为H ₂ O ₂生产提供了优异的光催化活性。ZnO在300℃煅烧产生的H ₂ O _{2为285 μmol·L}^-1，比未经处理的 ZnO 产生的量大 5 倍以上。_{这项工作提供了对 ZnO 纳米棒光催化 H 2} O ₂生产机制的深入了解，并为 H ₂ O ₂生产提供了一种有前景的策略。