4.6 Article

Use of Photocatalytically Active Supramolecular Organic-Inorganic Magnetic Composites as Efficient Route to Remove β-Lactam Antibiotics from Water

期刊

CATALYSTS
卷 12, 期 9, 页码 -

出版社

MDPI
DOI: 10.3390/catal12091044

关键词

layered double hydroxides; magnetic nanoparticles; phthalocyanines; antibiotics removal

资金

  1. Romanian Ministry of Education and Research, CNCS-UEFISCDI within PNCDI III [PN-III-P4-ID-PCE-2020-2207]
  2. Education, Scholarship, Apprenticeships and Youth Entrepreneurship Programme-EEA [18-Cop-0041]

向作者/读者索取更多资源

Considerable efforts have been made in recent years to identify an optimal treatment method for the removal of antibiotics from wastewaters. A series of supramolecular organic-inorganic magnetic composites containing Zn-modified MgAl LDHs and Cu-phthalocyanine as photosensitizers were prepared with the aim of removing beta-lactam antibiotics from aqueous solutions. The removal of the beta-lactam antibiotics occurred via concerted adsorption and photocatalytic degradation, with a maximum efficiency of approximately 93% achieved after 2 hours of reaction.
Considerable efforts have been made in recent years to identify an optimal treatment method for the removal of antibiotics from wastewaters. A series of supramolecular organic-inorganic magnetic composites containing Zn-modified MgAl LDHs and Cu-phthalocyanine as photosensitizers were prepared with the aim of removing beta-lactam antibiotics from aqueous solutions. The characterization of these materials confirmed the anchorage of Cu-phthalocyanine onto the edges of the LDH lamellae, with a negligible part inserted in the interlayer space. The removal of the beta-lactam antibiotics occurred via concerted adsorption and photocatalytic degradation. The efficiency of the composites depended on (i) the LDH: magnetic nanoparticle (MP) ratio, which was strongly correlated with the textural properties of the catalysts, and (ii) the phthalocyanine loading in the final composite. The maximum efficiency was achieved with a removal of similar to 93% of the antibiotics after 2 h of reaction.

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