Issue 17, 2025

Long-term stability of Ag NPs in a room temperature cured SiO2–ZrO2 crosslinking hybrid robust coating towards enhanced weather resistance properties and its antibacterial applications

Abstract

SiO2–ZrO2 hybrid polymeric network films incorporating silver nanoparticles (Ag NPs) with long-term stability were developed by a sol–gel spray coating technique under room temperature (RT) curing using tetraethyl orthosilicate (TEOS), (3-glycidyloxypropyl)trimethoxysilane (GLYMO), a diamine based curing agent, zirconium(IV) isopropoxide, trimethylsiloxy-terminated polydimethylsiloxane (PDMS) and silver nitrate. Formation of zirconium oxide (ZrO2) in the Ag NPs embedded polymeric hybrid structure at RT plays a vital role in this robust hybrid matrix to keep Ag NPs stable over a period of 500 days under ambient conditions without significant degradation of absorbance intensity at 415 nm with retention of a strong brownish yellow color. Comprehensive characterization of the RT cured coated film with an Ag NP embedded hybrid matrix was conducted using UV-visible absorption spectroscopy, grazing incidence X-ray diffraction (GIXRD), attenuated total reflectance-Fourier transform infrared (ATR-FTIR), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and water contact angle (WCA) measurement. The physico-mechanical and weather resistance properties of the prepared zirconia embedded film were evaluated using pencil hardness, adhesion, chemical durability, humidity, thermal effect and UV resistance tests. Due to the long-term stability of Ag NPs in the RT cured hybrid polymeric matrix, it shows potential for antibacterial applications.

Graphical abstract: Long-term stability of Ag NPs in a room temperature cured SiO2–ZrO2 crosslinking hybrid robust coating towards enhanced weather resistance properties and its antibacterial applications

Supplementary files

Article information

Article type
Paper
Submitted
12 Feb 2025
Accepted
26 Mar 2025
First published
08 Apr 2025

New J. Chem., 2025,49, 6914-6929

Long-term stability of Ag NPs in a room temperature cured SiO2–ZrO2 crosslinking hybrid robust coating towards enhanced weather resistance properties and its antibacterial applications

S. Manna, M. K. Naskar, D. Saha, P. Pal and S. K. Medda, New J. Chem., 2025, 49, 6914 DOI: 10.1039/D5NJ00611B

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