期刊
CHEMOSPHERE
卷 293, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2022.133548
关键词
Contaminants of emerging concern; Hybrid materials; Membrane technology; Multifunctional materials; Water remediation; Photocatalysis
资金
- Portuguese Foundation for Science and Technology (Fundacao para a Ciencia e a Tecnologia -FCT) by FEDER funds through the COMPETE 2020-Programa Operacional Competitividade e Internacionalizacao (POCI) [UID/QUI/0686/2020, UID/FIS/04650/2020, POCI-01-0145-FEDER-006941, PTDC/CTM-ENE/5387/2014]
- Portuguese Foundation for Science and Technology (Fundacao para a Ciencia e a Tecnologia -FCT) [UIDB/00100/2020]
- Portuguese Foundation for Science and Technology (Fundacao para a Ciencia e a Tecnologia -FCT) of the Associate Laboratory for Green Chemistry - LAQV [UIDB/50006/2020, UIDP/50006/2020]
- FCT [2020.09630.BD, SFRH/BD/122373/2016, 2020.02802. CEECIND, CEECINST/00102/2018]
- Basque Government Industry Department under the ELKARTEK program
- Fundação para a Ciência e a Tecnologia [2020.09630.BD, SFRH/BD/122373/2016] Funding Source: FCT
This work focuses on the combination of multifunctional photocatalytic and adsorbent materials in a unique polymeric membrane. The efficient functionalization of TiO2 nanoparticles with gold particles enabled absorption of visible radiation. The produced hybrid materials showed high efficiency in the degradation of norfloxacin and adsorption of arsenic, making them valuable for water treatment processes.
This work focuses on the combination of multifunctional photocatalytic and adsorbent materials in a unique polymeric membrane. For this purpose, Au/TiO2 and Y2(CO3)3 nanoparticles were immobilised onto a poly (vinylidene fluoride-hexafluoropropylene), (PVDF-HFP) membrane, and the physical-chemical characterisation of these materials was performed, as well as pollutant removal efficiency. An efficient TiO2 functionalisation with gold nanoparticles was achieved, endowing these particles with the capability to absorb visible radiation absorption. A favourable porous structure was obtained for the membranes, with an average pore size of 4 mu m, and the nanoparticles immobilisation did not alter the chemical properties of the polymeric membrane. The produced hybrid materials, including both the Au/TiO2 and Y2(CO3)3 nanoparticles, presented an efficiency of 57% in the degradation of norfloxacin (5 mg/L) under ultraviolet radiation for 120 min, 80% under visible radiation for 300 min, and 58% in arsenic adsorption for 240 min. These membranes represent a new multifunctional platform for removing several pollutants, which may allow their incorporation in more efficient and less energy-consuming water treatment processes favouring its application, even in low energy resources countries.
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