Piezocatalysis is capable of converting mechanical vibrations into chemical energy, portraying a promising alternative technology for wastewater purification and energy regeneration. Tin disulfide (SnS₂) has evoked considerable attention in piezocatalysis, yet the efficiency is still far from satisfactory due to the undesirable piezoelectricity. Herein, lattice strain engineering induced by the difference in ion sizes (Cu and Ag to Sn) was utilized for the first time to improve the piezoelectricity of SnS₂ to achieve the complete removal of bisphenol A (BPA) in 30 min and a high H₂ generation rate (399 μmol g⁻¹ h⁻¹). Mechanism analyses reveal that doping can induce S vacancies and formation of amorphous, increasing the number of surface-reaction sites. Piezoelectricity of SnS₂ can be improved greatly due to lattice distortion and uneven charge distribution after doping. These synergistic effects result in elevated carriers and reactive species concentration. Impressively, Ag doping aggravates the lattice deformation due to the largest radius, exhibiting the highest piezocatalystic performance. This efficient lattice distortion engineering can serve as guideline for the development of piezocatalysts for environment remediation and production of hydrogen energy.

压电催化能够将机械振动转化为化学能，是一种很有前途的废水净化和能源再生替代技术。二硫化锡（SnS ₂）在压电催化中引起了相当大的关注，但由于不理想的压电性，其效率仍远未令人满意。在此，首次利用离子尺寸差异（Cu 和 Ag 到 Sn）引起的晶格应变工程来提高 SnS ₂的压电性，以实现在 30 分钟内完全去除双酚 A (BPA) 和高 H ₂生成率 (399 μmol g ⁻¹ h ⁻¹). 机理分析表明掺杂可以诱导 S 空位和非晶态的形成，从而增加表面反应位点的数量。由于掺杂后晶格畸变和电荷分布不均匀，SnS _{2的压电性能得到了很大的提高。}这些协同效应导致载流子和活性物质浓度升高。令人印象深刻的是，由于最大半径，Ag 掺杂加剧了晶格变形，表现出最高的压电催化性能。这种有效的晶格畸变工程可以作为开发用于环境修复和氢能生产的压电催化剂的指南。