Surface coating of titania and graphene oxide onto plasma-activated polymer membranes as efficient photocatalysts for organics removal from water

Mai Lien Tran, Chun Chieh Fu, Ting Hsuan Wei, Chien Te Hsieh, Ruey Shin Juang*

*此作品的通信作者

研究成果: 期刊稿件文章同行評審

11 引文 斯高帕斯(Scopus)

摘要

In this study, various weight ratios of titania (TiO2) and graphene oxide (GO) mixed powders were coated on the surface of microporous poly(vinylidene fluoride) (PVDF) membranes after the membranes were activated by argon plasma and immediately grafted with acrylic acid. Such composite membranes were first characterized by X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), field-emission scanning electron microscopy (FE-SEM), and water contact angle measurements. These composite membranes were then applied to remove phenol and m-nitrophenol in the single and binary systems under UV irradiation. Results showed that the presence of GO enhanced the efficiency of TiO2 photocatalysis due to its ability to minimize the agglomeration of TiO2 nanoparticles and the recombination rate of electron-hole pairs. In contrast to traditional suspended catalyst systems, the as-prepared composite membranes were proven to be more economic and efficient materials for the removal of organic pollutants. Finally, the intermediates produced during UV photocatalysis of single and binary phenol/m-nitrophenol using the composite membranes were detected and identified by UPLC®-QTof/MS, and the degradation pathways were proposed accordingly.

原文英語
文章編號101488
期刊Journal of Water Process Engineering
37
DOIs
出版狀態已出版 - 10 2020

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© 2020 Elsevier Ltd

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