The removal of the commonly used herbicides is essential for environmental remediation. In this study, mesoporous TiO₂ photocatalysts modified with PtO were synthetized by the template-assisted scheme to develop highly effective materials for the elimination of Imazapyr herbicide under visible-light preservation. The effect of the PtO loading was investigated, and the xPtO-TiO₂ materials were deeply considered by N₂ physisorption, XRD, HRTEM, FTIR, DRS UV-Vis, Raman, XPS, PL and photocurrent measurements. Total Imazapyr photodegradation was archived on mesoporous TiO₂ photocatalysts loaded with 0.6 and 0.8 wt% of PtO. The optimized xPtO-TiO₂ photocatalyst degrades the Imazapyr under solar light more efficiently than the pure TiO₂ and the commercial Degussa P25 (photoefficiency of 35%, 1%, and 0.5%, respectively). The improvement in the photoefficiency of the xPtO-TiO₂ photocatalysts respect to the pure TiO₂ was associated to the cooperative effect between PtO and TiO₂ nanoparticles leading to a lessening in the energy gap and lower recombination of excited electron-hole pairs. The optimized 0.6PtO-TiO₂ photocatalyst demonstrated to be stable and recyclable after up to five consecutive photocatalytic runs. Therefore, it can be a potential candidate for the significant mineralization of Imazapyr herbicide under solar light irradiation.

去除常用除草剂对于环境修复至关重要。在这项研究中，PtO改性的介孔TiO ₂光催化剂是通过模板辅助方案合成的，以开发在可见光保存下用于消除Imazapyr除草剂的高效材料。研究了PtO负载的影响，并通过N ₂物理吸附，XRD，HRTEM，FTIR，DRS UV-Vis，拉曼，XPS，PL和光电流测量对xPtO-TiO ₂材料进行了深入研究。总的Imazapyr光降解记录在负载有0.6和0.8 wt％PtO的介孔TiO ₂光催化剂上。优化的xPtO-TiO ₂与纯TiO ₂和市售Degussa P25相比，光催化剂在太阳光下能更有效地降解Imazapyr（光效率分别为35％，1％和0.5％）。在的光电效率的提高X的PtO-TIO ₂光催化剂尊重纯的TiO ₂被关联到的PtO和TiO之间的协同效应_2个纳米颗粒导致的能隙的减轻和受激电子-空穴对的重组低。优化的0.6PtO-TiO ₂经过多达五次连续的光催化运行后，证明该光催化剂稳定且可回收。因此，它可能是Imazapyr除草剂在太阳光下大量矿化的潜在候选者。