In Situ High-Efficient Construction of UiO-66@AgNPs Nanocomposite as Heterogeneous Metallocene Catalytic Carrier for Preparing Antibacterial Polypropylene
Year: 2025
Type: article
Abstract: Antibacterial polypropylene (PP) is of great applied value in the health care and food packaging fields; however, there are many challenges in preparation because of the nonpolar characteristic of PP. Herein, AgNPs as a kind of broad-spectrum antibacterial agent have been innovatively developed via in situ reduction of Ag precursor in the classical metal–organic framework (MOF) carrier, UiO-66. AgNPs in UiO-66 can maintain stability and do not agglomerate. Furthermore, to solve the dispersion problem of AgNPs in PP matrix, the obtained UiO-66@AgNPs nanoparticles were first treated with Ag+ and triisobutylaluminum (TIBA) successively, and then used as a carrier of the methylaluminoxane (MAO) cocatalyst to accomplish the heterogenization of a typical zirconium-based metallocene catalytic system. Antibacterial PP was further efficiently produced through the heterogeneous polymerization of propylene by using the target heterogeneous catalytic system. The obtained PP/UiO-66@(AgNPs/Ag+) nanocomposite showed strong antibacterial ability with 99.48% antibacterial activity at a very low Ag content of 0.23 wt % due to the excellent dispersion of the antibacterial agents in the PP matrix. Meanwhile, the thermal stability of PP was significantly enhanced by the introduction of UiO-66@(AgNPs/Ag+) antibacterial agents.
Source: ACS Omega
Authors: Yu Zhang, Xinxing Guo, Huajin Wang, Ruirui Han, Chunsong Xie, Xinqiu Hong
Institutions: Jiaxing Nanhu University, Donghua University, Jiaxing University
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,935
OpenAlex ID: W4411586048