Mussel-Inspired Immobilization of Silver Nanoparticles toward Antimicrobial Cellulose Paper

Abstract

Paper and paper products are widely used without any antimicrobial efficacy in our everyday lives and thus can act as potential transporters of many diseases. Herein, we introduce antimicrobial activity to cellulose paper by presenting a tailored mussel-inspired strategy for the sustainable immobilization of silver nanoparticles (AgNPs), which are well-known for the effectiveness in preventing annexation and proliferation of microbes on materials surfaces. First, we functionalized the cellulose paper with succinic acid that eventually reacted with dopamine to give dopamine-modified paper. The dopamine molecules possess excellent adhesion and strong coordination with metal substrates through catechol groups offering a potentially robust interface between AgNPs and the organic structure of the paper. Next, AgNPs were deposited onto the paper by simply immersing dopamine-modified paper in a silver salt solution to accomplish the antimicrobial properties. Field emission scanning electron microscopic study of the synthesized antimicrobial papers confirmed that the loading of AgNPs was time-dependent, and the average size of the nanoparticles was in the range of 50–60 nm after 8 h of deposition time. The paper decorated with AgNPs showed excellent antimicrobial activity against highly virulent and multiple antibiotic resistant Gram-positive and Gram-negative pathogenic bacteria as well as against some extremely virulent fungal phytopathogens.

Bi-functional silica nanoparticles for simultaneous enhancement of mechanical strength and swelling capacity of hydrogels

“…The high-resolution C 1s spectrum of Am-Si NPs can be deconvoluted into two different peaks, C-C/C-Si and C-N at binding energy 284.7 eV and 286.3 eV, respectively. 39,40 Aer the functionalization of Am-Si NPs with methacrylic anhydride, a new peak for N-C]O was found at binding energy 288.4 eV. 41,42 To identify the reaction yield of the functionalization of Am-Si NPs with acrylic group, we carefully observed the peak areas that correspond to the C-N (representative of -NH 2 at Am-Si) and N-C]O (representative of -CONHat BF-Si) groups.…”

Facile fabrication of functional cellulose paper with high-capacity immobilization of Ag nanoparticles for catalytic applications for tannery wastewater

“…In Fig. 7b, pristine cellulose paper exhibits a negative surface with a zeta-potential of − 20.6 ± 0.46 mV at pH 7 due to a large number of -OH groups on the cellulose fibers [49,50]. By contrast, the GA@AgNPs-LA-CP shows a more negative charge (− 23.5 ± 0.51 mV), which is ascribed to the immobilization of several GA@AgNPs with negatively charged anionic carboxyl groups.…”

Silver Nanoparticles Coated Poly(L-Lactide) Electrospun Membrane for Implant Associated Infections Prevention

“…PDA contains many catechol, amino, and quinone groups, which can be used to connect other molecules or functional particles on PDA treated surfaces (Huang et al, 2017;Lin et al, 2017). Furthermore, due to the reduction effect of catechol groups, AgNPs can be synthesized via the in-situ reduce reaction of silver ion, and thus this mussel inspired method have been widely used to immobilize AgNPs on various matrix, such as cellulose paper (Islam et al, 2018), mesoporous silica (Song et al, 2018), and polymer electrospun fibers .…”