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首页> 外文期刊>RSC Advances >Photocatalytic degradation and toxicity evaluation of diclofenac by nanotubular titanium dioxide-PES membrane in a static and continuous setup
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Photocatalytic degradation and toxicity evaluation of diclofenac by nanotubular titanium dioxide-PES membrane in a static and continuous setup

机译：纳米管二氧化钛-PES膜在静态和连续条件下对双氯芬酸的光催化降解和毒性评估

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摘要

Diclofenac is a commonly used anti-inflammatory drug, which has been found in surface waters. Advanced oxidation processes (AOPs) seem to be the most suitable technique to prevent the entry of diclofenac and other pollutants into surface waters. TiO2 is especially reliable in mineralizing many organic molecules. The combination of TiO2 nanotubes with a polymer microfiltration membrane (polyethersulfone, PES) showed high photocatalytic activity by degrading diclofenac combined with an excellent membrane performance and long-term stability. By continuously degrading pollutants from water via a cross-flow setup, the molecules to be degraded are transported right to the membrane surface so that the overall reaction rate is increased. The toxicity of diclofenac was reduced by photocatalysis and photolysis; however, photocatalysis had greater impact. Moreover, the complete degradation of pollutants is very important to avoid highly toxic intermediate products.
机译：双氯芬酸是一种常用的抗炎药，已在地表水中发现。先进的氧化工艺（AOP）似乎是防止双氯芬酸和其他污染物进入地表水中的最合适技术。 TiO2在矿化许多有机分子方面特别可靠。 TiO2纳米管与聚合物微滤膜（聚醚砜，PES）的组合通过降解双氯芬酸具有很高的光催化活性，并具有出色的膜性能和长期稳定性。通过交叉流动装置连续降解水中的污染物，待降解的分子被直接输送到膜表面，从而提高了总反应速率。通过光催化和光解可以降低双氯芬酸的毒性。但是，光催化的影响更大。此外，污染物的完全降解对于避免剧毒的中间产品非常重要。

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