Background

In this study, the photodegradation of three pharmaceuticals, namely Ibuprofen (IBP), Naproxen (NPX), and Cetirizine (CIZ) in aqueous media was investigated under UV irradiation. The photocatalyst used in this work consists of surface functionalized titanium dioxide (TiO₂–NH₂) nanoparticles grafted into Polyacrylonitrile (PAN)/multi-walled carbon nanotube composite nanofibers. Surface modification of the fabricated composite nanofibers was illustrated using XRD, FTIR, and SEM analyses.

Results

Sets of experiments were performed to study the effect of pharmaceuticals initial concentration (5–50 mg/L), solution pH (2–9), and irradiation time on the degradation efficiency. The results demonstrated that more than 99% degradation efficiency was obtained for IBP, CIZ, and NPX within 120, 40, and 25 min, respectively.

Conclusions

Comparatively, the photocatalytic degradation of pharmaceuticals using PAN-CNT/TiO₂–NH₂ composite nanofibers was much more efficient than with PAN/TiO₂–NH₂ composite nanofibers.

中文翻译：

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PAN-MWCNT/TiO2-NH2 纳米纤维膜在紫外光照射下光降解布洛芬、西替利嗪和萘普生。

背景

在本研究中，研究了布洛芬 (IBP)、萘普生 (NPX) 和西替利嗪 (CIZ) 三种药物在紫外线照射下在水介质中的光降解情况。这项工作中使用的光催化剂由接枝到聚丙烯腈（PAN）/多壁碳纳米管复合纳米纤维中的表面功能化二氧化钛（TiO ₂ –NH _{2 ）纳米颗粒组成。}使用 XRD、FTIR 和 SEM 分析说明了所制造的复合纳米纤维的表面改性。

结果

进行了几组实验来研究药物初始浓度 (5–50 mg/L)、溶液 pH (2–9) 和照射时间对降解效率的影响。结果表明，IBP、CIZ 和 NPX 分别在 120、40 和 25 分钟内获得了 99% 以上的降解效率。

结论

相比之下，使用PAN-CNT/TiO ₂ -NH _{2复合纳米纤维光催化降解药物的效率比使用PAN/TiO 2} -NH ₂复合纳米纤维的效率高得多。