Henan Engineering Research Center of Resource & Energy Recovery from Waste, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
Henan Engineering Research Center of Resource & Energy Recovery from Waste, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
J Environ Manage. 2022 Feb 15;304:114289. doi: 10.1016/j.jenvman.2021.114289. Epub 2021 Dec 20.
Poriferous monocrystal-like nanostructures are contributing to fabricate long-distance charge transfer pathways and rapid diffusions of the degraded products, and attracts wide attentions. In this work, layered and poriferous (Al,C)-TaO mesocrystals were fabricated by topotactic transformation strategy with TaAlC MAX as starting materials for visible-light photocatalytic antibiotic degradation. The prepared sample exhibited enhanced visible-light absorption and visible-light photocatalytic performance, far superior to those of commercial TaO and TaAlC MAX, which was mainly because of the elemental doping in the samples. The experimental results also indicated that continuous attacks of the photo-generated holes and ·O species efficiently induced efficient visible-light photodegradation of tetracycline. Current work also indicates a new and potential tantalum-based semiconductors for high-performance environmental photocatalysis.
多孔单晶状纳米结构有助于构建长程电荷转移途径和降解产物的快速扩散，因此受到广泛关注。在这项工作中，我们采用拓扑转化策略，以 TaAlC MAX 为前驱体，制备了具有层状多孔（Al，C）-TaO 准晶的材料，用于可见光光催化抗生素降解。所制备的样品表现出增强的可见光吸收和可见光光催化性能，远优于商业 TaO 和 TaAlC MAX，这主要归因于样品中的元素掺杂。实验结果还表明，光生空穴和·O 物质的连续攻击有效地诱导了四环素的高效可见光光降解。本工作还为高性能环境光催化提供了一种新型潜在的基于钽的半导体材料。
