School of Urban Construction, Wuhan University of Science and Technology, Wuhan, 430065, China.
Environ Sci Pollut Res Int. 2023 Apr;30(16):46997-47011. doi: 10.1007/s11356-023-25390-1. Epub 2023 Feb 3.
Acetaminophen (AP) is a widely used antipyretic analgesic belonging to the class of PPCPs, which is difficult to be effectively degraded by traditional water treatment processes. However, photocatalytic technology may be an effective approach. Herein, B-doped TiO photocatalytic materials were synthesized by sol-gel method, calcinated at 600℃ for 2 h, investigated by XRD, TEM, XPS, and other characterization methods. The photocatalytic efficiency and factors affecting the photocatalytic activity were assessed by degradation of AP under 365 nm UV light. Compared with undoped TiO, 4%B-TiO nanopowder has smaller grain size, higher porosity, and lower bandgap energy of 3.11 eV. Scavenging experiments and ESR results show that •OH is the principal active species. Hence, the degradation efficiency of AP is as high as 98.8% in 30 min when adopting 10-mg/L AP initial concentration and 1-g/L 4%B-TiO loading, owing to efficient •OH generated by B-TiO.
对乙酰氨基酚（AP）是一种广泛使用的解热镇痛药，属于 PPCPs 类，传统的水处理工艺很难有效降解。然而，光催化技术可能是一种有效的方法。本文采用溶胶-凝胶法合成了 B 掺杂 TiO2 光催化材料，在 600℃下煅烧 2 h，通过 XRD、TEM、XPS 等表征方法进行了研究。通过 365nmUV 光下 AP 的降解评估了光催化效率和影响光催化活性的因素。与未掺杂的 TiO2 相比，4%B-TiO2 纳米粉末具有更小的晶粒尺寸、更高的孔隙率和更低的带隙能 3.11eV。猝灭实验和 ESR 结果表明，•OH 是主要的活性物质。因此，当采用 10mg/LAP 初始浓度和 1g/L4%B-TiO2 负载量时，AP 的降解效率在 30min 内高达 98.8%，这是由于 B-TiO2 产生了高效的•OH。
