Synthesis, characterization, photocatalytic and bactericidal properties of Ag 3 PO 4 /NiCo-metal - organic framework composite irradiated by white light emitting diode

被引：3

作者：

Morais, Marcelo L. ^{[1
]}

Quinzeiro, Sanoelle F. L. ^{[1
]}

Nobre, Marcio L. M. ^{[2
]}

Lopes, Joyce B. A. ^{[2
]}

Cavalcante, Laecio S. ^{[1
]}

Silva-Neto, Antonio J. P. ^{[1
]}

Ribeiro, Lara K. ^{[3
]}

Cruz-Filho, Joao F. ^{[1
]}

Luz, Geraldo E. ^{[1
]}

机构：

[1] Univ Estadual Piaui, PPGQ GERATEC, CETEM, GrEEnTec CCN DQ, POB 381, BR-64002150 Teresina, PI, Brazil

[2] Inst Fed Educ Ciencia & Tecnol Maranhao, Lab Microbiol, BR-65606000 Caxias, MA, Brazil

[3] Univ Fed Sao Carlos, Dept Quim CDMF, Rod Washington Luiz km 235, BR-13565905 Sao Carlos, SP, Brazil

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2024年 / 456卷

关键词：

Water treatment; Microorganism inactivation; Advance oxidation process; Staphylococcus aureus; Escherichia coli; ANTIBACTERIAL ACTIVITY; RIETVELD REFINEMENT; POWDER DIFFRACTION; DRINKING-WATER; AG3PO4; PERFORMANCE; DEGRADATION; NANOSHEETS; NANOCOMPOSITE; NANOPARTICLES;

D O I：

10.1016/j.jphotochem.2024.115860

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, Ag 3 PO 4 /NiCo-MOF composites were synthesized with different mass contents of NiCo-MOF (5, 10, and 20wt% ) from silver phosphate crystals (Ag 3 PO 4 ) and sheets of metal -organic frameworks of nickel and cobalt (NiCo-MOF). The materials were characterized, and their photocatalytic and bactericidal properties were evaluated against the bacteria Staphylococcus aureus (S. aureus) and Escherichia coli (E coli) incubated under exposure to white light emitting diode (WLED). X-ray diffraction (XRD) patterns of Ag 3 PO 4 and NiCo-MOF confirm the formation of crystals without a deleterious phase. Field emission scanning electron microscopy (FE-SEM) images showed polymorphism with shape predominant to tetrahedron-like Ag 3 PO 4 microcrystals and sheets for NiCo-MOF. The materials showed band gap energy values between 2.32 eV and 3.60 eV. Fouriertransform infrared (FTIR) spectroscopy shows the formation of molecular interaction between the materials. Bacterial susceptibility tests showed a reduction in Minimum Bactericidal concentration (MBC) values to 64 mu g/ mL when incubated with Ag 3 PO 4 under WLED exposure. The Ag 3 PO 4 /NiCoMOF-5wt% composite, incubated without light, showed MBC values of 64 mu g/mL for S. aureus and 32 mu g/mL for E. coli, respectively. Based on the results, the composite in the absence of WLED showed superior bactericidal results.

引用

页数：12

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[41] Selective concentration for ciprofloxacin resistance in Escherichia coli grown in complex aquatic bacterial biofilms [J].