In this work, Ag/BiVO₄ heterostructural photocatalysts were developed in order to reveal exceptional structural-dependent photoinduced charge migration kinetics as well as the underlying photocatalytic antibacterial dynamic process. The structure-dependent interface of BiVO₄ and Ag nanoparticles was successfully constructed to improve the photoinduced interface charge transfer efficiency and interface correlation. DFT calculation indicated that a net charge of about 0.33 e between Ag and tz-BiVO₄ was achieved by extraordinary interface charge transfer, being far larger than that between Ag and ms-BiVO₄. Larger net charge has consequences on mobility of charge carriers of tz-BiVO₄ that can raise the migration and separation of charge carriers for Ag/tz-BiVO₄ heterojunction. Fine interfacial contact between Ag and tz-BiVO₄ led to the optimized photocatalytic performance toward E. coli inactivation, being predominately higher than that of tz-BiVO₄, ms-BiVO₄, and Ag/ms-BiVO₄ catalysts. Besides photocatalytic activity, the thermocatalytic inactivation activity of Ag/tz-BiVO₄ also exhibited a factor of about 7.2 and 3.1 times higher than that of tz-BiVO₄ and Ag/ms-BiVO₄. Trapping and EPR measurements suggested that the structural-dependent photocatalytic activity of Ag/BiVO₄ mainly originated from the pronounced variation of the capability to produce H₂O₂ active species, where the capability of generating H₂O₂ over Ag/tz-BiVO₄ is highly accelerated. Moreover, it cannot be ignored that this study provides an ideal candidate for many aspects, such as environmental and water pollution caused by pathogenic microorganisms and disinfection of medical materials, food packaging, household materials, and public places, etc.

在这项工作中，开发了Ag / BiVO ₄异质结构光催化剂，以揭示出色的结构依赖性光诱导电荷迁移动力学以及潜在的光催化抗菌动力学过程。成功地构建了BiVO ₄和Ag纳米粒子的结构依赖性界面，以提高光致界面电荷转移效率和界面相关性。DFT计算表明，通过非常规的界面电荷转移，在Ag与tz-BiVO _4之间获得了约0.33 e的净电荷，远大于Ag与ms-BiVO ₄之间的电荷。较大的净电荷会影响tz-BiVO ₄的电荷载流子迁移率可以提高Ag / tz-BiVO ₄异质结的载流子迁移和分离。Ag和tz-BiVO ₄之间的精细界面接触导致对大肠杆菌灭活的优化光催化性能，主要高于tz-BiVO ₄，ms-BiVO ₄和Ag / ms-BiVO ₄催化剂的光催化性能。除光催化活性外，Ag / tz-BiVO ₄的热催化失活活性也比tz-BiVO ₄和Ag / ms-BiVO ₄高约7.2和3.1倍。诱捕和EPR测量表明Ag / BiVO的结构依赖性光催化活性₄主要来自产生H ₂ O ₂活性物质的能力的明显变化，其中在Ag / tz-BiVO ₄上产生H ₂ O ₂的能力得到了极大的加速。此外，不可忽视的是，这项研究为许多方面提供了理想的候选者，例如由病原微生物引起的环境和水污染以及医疗材料，食品包装，家用材料和公共场所的消毒等。