Here, we report a simple route of synthesizing bulk layered TiS₂ via chemical vapor transport (CVT) using non-toxic inorganic precursors, followed by successful isolation of few-layered TiS₂ flakes using high-frequency-based liquid-phase exfoliation. Exfoliated TiS₂ flakes exhibit significantly enhanced photocatalytic activity towards the degradation of tetracycline hydrochloride (TCH) under simulated solar light irradiation, achieving ~ 95% degradation efficiency with its reaction rate constants six times higher than that of the bulk counterpart. The underlying degradation mechanism can be attributed to the fully exposed reactive sites originating from the well-defined layered structure. Trapping experiments coupled with electron paramagnetic resonance (EPR) measurements confirm the generation of electrons and hydroxyl radicals as major active species. The photodegradation pathway and intermediates of TCH were studied in-depth through liquid chromatography-mass spectrometry (LC-MS). The current work provides new insight into using exfoliated TiS₂ for environmental remediation.

在这里，我们报告了一种使用无毒无机前体通过化学气相传输 (CVT)合成块状层状 TiS ₂的简单途径，然后使用基于高频的液相剥离成功分离出少量层状 TiS _2薄片。剥离 TiS ₂在模拟太阳光照射下，薄片对盐酸四环素 (TCH) 的降解表现出显着增强的光催化活性，降解效率达到约 95%，其反应速率常数是块状对应物的 6 倍。潜在的降解机制可归因于源自明确定义的层状结构的完全暴露的反应位点。捕获实验与电子顺磁共振 (EPR) 测量相结合，证实电子和羟基自由基是主要活性物质的产生。通过液相色谱-质谱（LC-MS）对TCH的光降解途径和中间体进行了深入研究。_{目前的工作为使用剥离的 TiS 2}提供了新的见解用于环境修复。