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Matrices based on meso antibacterial framework
Author(s) -
Sohrabnezhad Shabnam,
Pourahmad Afshin,
Salahshoor Mobin
Publication year - 2020
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201900496
Subject(s) - chemistry , antibacterial activity , mesoporous material , nuclear chemistry , porosity , hydrothermal circulation , nanocomposite , solvent , metal , hydrothermal synthesis , reducing agent , silver nanoparticle , nanoparticle , nanotechnology , chemical engineering , bacteria , catalysis , organic chemistry , materials science , genetics , engineering , biology
In this paper, the synthesis of three types of porous materials (PMs) (porous Fe 3 O 4 , MIL‐101 metal‐organic framework (MOF), and MCM‐41 mesoporous silica) by hydrothermal method was performed. The incorporation of Ag nanoparticles (Ag NPs) was carried out after the synthesis reaction of supports in MCM‐41 and MIL‐101 MOF. Ag core@ porous Fe 3 O 4 core–shell system was prepared via a one‐pot hydrothermal method. Ag‐MIL‐101 was obtained using Urtica dioica leaf extract as the green solvent and reducing agent. The antibacterial activity of Ag‐PM nanocomposites (NCs) was investigated on both Gram‐negative and Gram‐positive bacteria. The size of the silver NPs was determined to be 12 and 30 nm in MCM‐41 and MIL‐101 MOF, respectively. The diameter of Ag core in Ag@Fe 3 O 4 shell was ~135 nm. The antibacterial activity of Ag‐PMs was in the order Ag‐MCM‐41 > Ag‐MIL‐101 > Ag core@Fe 3 O 4 shell. The loading percent of Ag NPs in MCM‐41 (84%) was more than that in MIL‐101 (53%) and Fe 3 O 4 (31%). The release of Ag + ions from Ag‐MCM‐41, Ag‐MIL‐101, and Ag@Fe 3 O 4 NCs was 46, 2, and 1 ppm, respectively. The release of the Ag + ions and, consequently, the antibacterial activity of NCs depend on the uniform distribution, particles size, and the absence of aggregation of Ag NPs in PMs.