Ciobanu Vladimir, Galatonova Tatiana, Braniste Tudor, Urbanek Pavel, Lehmann Sebastian, Hanulikova Barbora, Nielsch Kornelius, Kuritka Ivo, Sedlarik Vladimir, Tiginyanu Ion
Centre of Advanced Research in Bionanoconjugates and Biopolymers, "Petru Poni" Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania.
National Centre for Materials Study and Testing, Technical University of Moldova, 168, Stefan Cel Mare Av, 2004, Chisinau, Moldova.
Sci Rep. 2024 Dec 28;14(1):31215. doi: 10.1038/s41598-024-82574-6.
One of the biggest issues of wide bandgap semiconductor use in photocatalytic wastewater treatment is the reusability of the material and avoiding the contamination of water with the material itself. In this paper, we report on a novel TiO aeromaterial (aero-TiO) consisting of hollow microtetrapods with ZnTiO inclusions. Atomic layer deposition has been used to obtain particles of unique shape allowing them to interlock thereby protecting the photocatalyst from erosion and damage when incorporated in active filters. The performance of the aero-TiO material was investigated regarding photocatalytic degradation of tetracycline under UV and visible light irradiation. Upon irradiation with a 3.4 mW/cm UV source, the tetracycline concentration decreases by about 90% during 150 min, while upon irradiation with a Solar Simulator (87.5 mW/cm) the concentration of antibiotic decreases by about 75% during 180 min. The experiments conducted under liquid flow conditions over a photocatalyst fixed in a testing cell have demonstrated the proper reusability of the material.
在光催化废水处理中使用宽带隙半导体的最大问题之一是材料的可重复使用性以及避免材料本身对水造成污染。在本文中，我们报道了一种新型的TiO气凝胶材料（气凝胶TiO），它由含有ZnTiO夹杂物的中空微四足体组成。原子层沉积已被用于获得具有独特形状的颗粒，使它们能够相互联锁，从而在将光催化剂纳入活性过滤器时保护其免受侵蚀和损坏。研究了气凝胶TiO材料在紫外光和可见光照射下对四环素的光催化降解性能。在用3.4 mW/cm的紫外光源照射时，四环素浓度在150分钟内下降约90%，而在用太阳模拟器（87.5 mW/cm）照射时，抗生素浓度在180分钟内下降约75%。在固定于测试池中的光催化剂上进行的液体流动条件下的实验证明了该材料具有良好的可重复使用性。
