Engelhardt Tony B, Schmitz-Stöwe Sabine, Schwarz Thomas, Stöwe Klaus
Institut für Chemie, Fakultät für Naturwissenschaften, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany.
Materials (Basel). 2020 Mar 18;13(6):1365. doi: 10.3390/ma13061365.
The rising pollution of surface water by endocrine disruptive chemicals (EDCS) could lead to the persistent harm of aquatic wildlife. Addressing this concern, advanced waste water treatment techniques should be established in addition to the present sewage treatment. Therefore, the promising advanced oxidation process of photocatalysis is discussed. With the aim of establishing a novel high throughput screening approach for photocatalysts, a workflow resting upon the use of a self-constructed 60-fold parallel stirring UV-A LED photoreactor, followed by parallel sample extraction by SPE and sequential automated analysis by GC-MS, was developed, and is presented in this article. With the described system, TiO-based photocatalysts, doped with different amounts of zinc, and synthesised by a sol-gel-route, were tested regarding their activity in the photocatalytic degradation of the synthetic estrogen 17α-ethinylestradiol. Thereby, the functional behavior of the photoreactor system and its applicability in a high throughput process could be evaluated. As a result of the catalyst screening, TiO catalysts with low amounts of zinc were found with a significantly higher activity, compared to undoped TiO. In conclusion, the presented system provides an easily accessible high throughput method for a variety of photocatalytic experiments.
内分泌干扰化学物质（EDCS）对地表水的污染日益严重，可能会对水生野生动物造成持续危害。为解决这一问题，除现有的污水处理外，还应建立先进的废水处理技术。因此，本文讨论了具有前景的光催化高级氧化工艺。为了建立一种新型的光催化剂高通量筛选方法，本文开发了一种工作流程，该流程基于使用自行构建的60倍平行搅拌UV-A LED光反应器，随后通过固相萃取（SPE）进行平行样品萃取，并通过气相色谱-质谱联用仪（GC-MS）进行顺序自动分析。利用所描述的系统，对通过溶胶-凝胶法合成的、掺杂不同量锌的TiO基光催化剂在光催化降解合成雌激素17α-乙炔雌二醇中的活性进行了测试。由此，可以评估光反应器系统的功能行为及其在高通量过程中的适用性。催化剂筛选结果表明，与未掺杂的TiO相比，低锌含量的TiO催化剂具有显著更高的活性。总之，所提出的系统为各种光催化实验提供了一种易于使用的高通量方法。
