Loading of ZIF‐67 on silk with sustained release of iodine as biocompatible antibacterial fibers

Abstract

Antibacterial fibers have great potential in numerous applications, including bandages, surgical robes, and surgical sutures, and play a significant role in our everyday lives. Here, zeolitic imidazolate framework‐67 was synthesized using a green method on silk fibers through a layer‐by‐layer process under ultrasonic irradiation (ZIF‐67@silk [U]) and without ultrasonic irradiation (ZIF‐67@silk [B]). Then, iodine was loaded on ZIF‐67@silk samples and were assessed as antibacterial fibers with iodine release. Four samples of ZIF‐67@silk and I2@ZIF‐67@silk were characterized by FT‐IR, PXRD, FE‐SEM, TGA, BET, and UV–Vis spectroscopy. Finally, antibacterial activity of ZIF‐67@silk (B and U) and I2@ZIF‐67@silk (B and U) on Staphylococcus aureus as Gram‐positive bacteria and Escherichia coli as Gram‐negative bacteria was investigated. In addition to ZIF‐67@silk samples, iodine‐loaded samples showed excellent antimicrobial facility.

Iodine-loaded ZIF-7-coated cotton substrates show sustained iodine release as effective antibacterial textiles

“…7 Antibacterial cellulose fabrics can result in the inhibition of bacterial growth or even kill bacteria. 8 Hence, many endeavors have been dedicated to integrating cotton fabrics with various antibacterial agents such as nanoparticles, 9–11 oxide particles, 12–14 metal salts, 15,16 silver, 17 iodine, 18,19 and antibiotics. 20,21 Iodine is a highly effective and powerful disinfectant, and not only has a broad antimicrobial activity spectrum against bacteria, fungi, and specific viruses but is also widely available and relatively cheap to use.…”

“…28 Nevertheless, free iodine on its own is unstable and has an irritating effect on wounds if applied directly. 18,29,30 Therefore, one solution to improve the stability of iodine is to use a carrier. 31 Hence, the use of metal–organic frameworks (MOFs) for the release of iodine is an interesting strategy.…”

Sustainable Antibacterial Surgical Suture Based on Recycled Silk Resource by an Internal Combination of Inorganic Nanomaterials

“…The proteins in silk surgical sutures provide nutrients for the growth and reproduction of microorganisms. In the meantime, the braided structure of sutures provides a chance for the propagation of bacteria, leading to the easy occurrence of festering inflammation and other infection symptoms in wounds. − Therefore, surface grafting or coating − and other methods are needed to treat the sutures with antibiotics. Impregnating silk sutures in materials with antibacterial efficacy (sulfamethoxazole) is a prevalent and straightforward method.…”

Heterostructured Ag@MOF-801/MIL-88A(Fe) Nanocomposite as a Biocompatible Photocatalyst for Degradation of Reactive Black 5 under Visible Light

“…Their nonadjustable structure, large band gap, and easy recombination of electron–hole pairs have hindered their further development in photocatalysis. , Metal–organic frameworks (MOFs), an emerging class of porous materials, consist of inorganic metal ions and organic ligands. As a result of their large surface areas, excellent chemical stability, adjustable pore size, organic linkers, and metal clusters, MOFs have attracted considerable interest in a variety of fields, including gas storage, gas separation, drug delivery, antibacterial, chemical sensing, catalysis, photocatalysis, and the use of MOFs as templates in chemical synthesis. − Metal N-heterocyclic carbenes (M-NHCs) on the pore walls of a porous metal–organic framework (MOF) can be advantageous for efficient organic catalysis. The Pd-NHC-MIL-101 and Ir-NHC-MIL-101 catalysts exhibited outstanding catalytic activity and stability in Suzuki and hydrogen transfer reactions .…”