Herein, a g-C₃N₄/PDI-g-C₃N₄ homojunction has been fabricated for piezo-photocatalytic atrazine removal and exhibited better performance than individual photocatalysis or piezocatalysis. The introduction of PDI induces the π-π interaction facilitating electrons migration, and twists the g-C₃N₄ plane into a more polar porous structure with enhanced piezoelectricity. The homojunction facilitates the photoelectron transfer at the g-C₃N₄/PDI-g-C₃N₄ interfaces. The photoelectricity and the piezoelectricity of g-C₃N₄/PDI-g-C₃N₄ were assessed. The finite element simulation showed that the porous structure of the g-C₃N₄/PDI-g-C₃N₄ is essential to the enhanced piezoelectricity. Astonishingly, the piezo-photocatalytic atrazine degradation rate under an optimized condition (pH=2.97) reached 94% within 60 min. Moreover, the g-C₃N₄/PDI-g-C₃N₄ homojunction produced 625.54 μM H₂O₂ during the one-hour piezo-photocatalysis. Given the quenching experiments, reactive species detection and the electronic band of g-C₃N₄/PDI-g-C₃N₄, the piezo-photocatalytic mechanism has been proposed. In addition, the degradation pathways and the reduced intermediates toxicity intermediates of atrazine have been investigated.

在此，gC ₃ N ₄ /PDI-gC ₃ N ₄同质结已被制造用于压电光催化去除莠去津，并表现出比单独的光催化或压电催化更好的性能。PDI 的引入引起 π-π 相互作用，促进电子迁移，并将 gC ₃ N ₄平面扭曲成具有增强压电性的极性更大的多孔结构。同质结促进了gC ₃ N ₄ /PDI-gC ₃ N ₄界面处的光电子转移。gC ₃ N ₄ /PDI-gC的光电和压电₃ N ₄被评估。有限元模拟表明，gC ₃ N ₄ /PDI-gC ₃ N ₄的多孔结构对于增强压电性能至关重要。令人惊讶的是，在优化条件（pH=2.97）下，压电光催化阿特拉津降解率在 60 分钟内达到 94%。此外，gC ₃ N ₄ /PDI-gC ₃ N ₄同质结在一小时的压电光催化过程中产生了625.54 μM H ₂ O ₂。给出了淬灭实验、活性物质检测和 gC ₃ N ₄的电子带/PDI-gC ₃ N ₄，提出了压电光催化机理。此外，还研究了阿特拉津的降解途径和降低中间体毒性的中间体。