In this work, the impact of APTES-modified TiO₂ photocatalysts on antioxidant enzymes (catalase and superoxide dismutase) activity secreted by bacteria was presented. Microbial tests has been examined using Escherichia coli (ATCC 29425) and Staphylococcus epidermidis (ATCC 49461) as model organisms. It was found that APTES-TiO₂ affected the activity of antioxidant enzymes. Additionally, obtained APTES-TiO₂ photocatalysts were capable of total E. coli and S. epidermidis inactivation under artificial solar light irradiation. The sample modified with the concentration of APTES equals 300 mM (TiO₂–4h–120°C-300mM) showed the strongest photocatalytic activity toward both bacteria species. The two-stage photocatalytic mechanism of bacteria response to photocatalysts was proposed.

在这项工作中，提出了APTES改性的TiO ₂光催化剂对细菌分泌的抗氧化酶（过氧化氢酶和超氧化物歧化酶）活性的影响。已使用大肠杆菌（ATCC 29425）和表皮葡萄球菌（ATCC 49461）作为模型生物检查了微生物测试。发现APTES-TiO ₂影响抗氧化剂酶的活性。另外，获得的APTES-TiO ₂光催化剂能够在人工太阳光照射下使大肠杆菌和表皮葡萄球菌完全失活。经APTES浓度修饰的样品等于300 mM（TiO ₂–4h–120°C-300mM）对两种细菌都表现出最强的光催化活性。提出了细菌对光催化剂反应的两阶段光催化机理。