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紫外光照射下PAN-MWCNT/TiO-NH纳米纤维膜对布洛芬、西替利嗪和萘普生的光降解作用

Photodegradation of Ibuprofen, Cetirizine, and Naproxen by PAN-MWCNT/TiO-NH nanofiber membrane under UV light irradiation.

作者信息

Mohamed Alaa, Salama Ahmed, Nasser Walaa S, Uheida Abdusalam

机构信息

1Egypt Nanotechnology Center, EGNC, Cairo University, Giza, 12613 Egypt.

2Production Engineering and Printing Technology Department, Akhbar El Yom Academy, Giza, 12655 Egypt.

出版信息

Environ Sci Eur. 2018;30(1):47. doi: 10.1186/s12302-018-0177-6. Epub 2018 Dec 3.

DOI:10.1186/s12302-018-0177-6
PMID:30595997
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6280780/
Abstract

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 (TiO-NH) 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/TiO-NH composite nanofibers was much more efficient than with PAN/TiO-NH composite nanofibers.

摘要

背景

在本研究中，考察了三种药物，即布洛芬（IBP）、萘普生（NPX）和西替利嗪（CIZ）在水介质中紫外光照射下的光降解情况。本研究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-NH）纳米颗粒组成。利用X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）分析对制备的复合纳米纤维进行了表面改性表征。

结果

进行了一系列实验，以研究药物初始浓度（5 - 50mg/L）、溶液pH值（2 - 9）和照射时间对降解效率的影响。结果表明，IBP、CIZ和NPX在120、40和25分钟内的降解效率分别超过99%。

结论

相比之下，使用PAN-CNT/TiO-NH复合纳米纤维对药物进行光催化降解比使用PAN/TiO-NH复合纳米纤维更有效。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/94606421e19f/12302_2018_177_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/77845357904f/12302_2018_177_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/fd4a92b6bea7/12302_2018_177_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/47d8641e2fe3/12302_2018_177_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/acd62dbce19f/12302_2018_177_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/521772e6441a/12302_2018_177_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/bcd840f24909/12302_2018_177_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/b3fe3f83b67b/12302_2018_177_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/94606421e19f/12302_2018_177_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/77845357904f/12302_2018_177_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/fd4a92b6bea7/12302_2018_177_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/47d8641e2fe3/12302_2018_177_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/acd62dbce19f/12302_2018_177_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/521772e6441a/12302_2018_177_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/bcd840f24909/12302_2018_177_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/b3fe3f83b67b/12302_2018_177_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c5a/6280780/94606421e19f/12302_2018_177_Fig8_HTML.jpg

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