Institute of Chemistry, Faculty of Natural Sciences, University of Technology Chemnitz, Straße der Nationen 62, 09111, Chemnitz, Germany.
ChemistryOpen. 2022 Nov;11(11):e202200180. doi: 10.1002/open.202200180.
The high-throughput screening investigations on TiO based photocatalyst composites presented here have been carried out in a 60-fold parallel photoreactor. Additional catalyst testing was performed in a microslit reactor system with immobilized catalysts. For further enhancing the photocatalytic activity of TiO (P25), composites of P25 and, for example, Bi O , CeO , g-C N , WO or ZnO were formulated in different nominal molar ratios. The catalysts' performances were assessed by their conversion of 17α-ethinyl estradiol (EE2) in aqueous solutions, determined by LC-MS. Findings show rapid EE2 conversions in short residence times. The extensive testing of catalysts led to the conclusion that the photocatalytic conversion is rather a function of residence time than a function of the materials utilized. This makes adequate process development seem more important than material development. The novelty of this contribution lies in the unique combination of testing a wide range of composite catalysts in a unique microreactor geometry.
这里展示的基于 TiO 的光催化剂复合材料的高通量筛选研究是在 60 倍并行光反应器中进行的。在带有固定催化剂的微缝反应器系统中进行了额外的催化剂测试。为了进一步提高 TiO（P25）的光催化活性，将 P25 与例如 BiO、CeO、g-CN、WO 或 ZnO 等复合材料以不同的名义摩尔比进行了配制。通过 LC-MS 测定，通过评估催化剂在水溶液中 17α-乙炔基雌二醇（EE2）的转化率来评估催化剂的性能。结果表明，在短停留时间内可快速转化 EE2。对催化剂的广泛测试得出的结论是，光催化转化与其说是材料利用的函数，不如说是停留时间的函数。这使得适当的工艺开发似乎比材料开发更为重要。本研究的新颖之处在于在独特的微反应器几何形状中测试广泛的复合催化剂的独特组合。
