Three-dimensional nanoporous Cu-BTC/graphene oxide nanocomposites with engineered antibacterial properties synthesized via a one-pot solvosonication process

Abstract

Cu-based nanostructures are a well-known class of antibacterial nanomaterials with broad antibacterial properties. In this study, a facile and one-pot solvosonication process is introduced to synthesize Cu-BTC/graphene oxide nanocomposites with controlled morphological and structural properties. The size range of synthesized Cu-BTC nanoparticles is controlled through the synthesis process by adjusting the content of graphene oxide nanosheets in the synthesis precursor solution. A wide range of sizes and morphologies are achieved via this strategy and the size range of Cu-BTC nanoparticles from 30-40 nm to 15-20 nm are obtained by increasing the content of graphene oxide in the precursor solution from 0.005 to 0.15 mg/ml. We believe an increase in the number of available sites on the basal plane of graphene oxide for the nucleation of Cu-BTC nanocrystals is the main reason for the smaller size range of Cu-BTC nanoparticles with higher concentrations of graphene oxide in the precursor solution.Moreover, the antibacterial activities of the Cu-BTC/graphene oxide nanocomposites are also

Construction of antifouling and antibacterial polyhexamethylguanidine/chondroitin sulfate coating on polyurethane surface based on polydopamine rapid deposition

“…Table 3 shows that the bacterial inhibition rate of PU‐PDA was over 87.8%. Its antibacterial component was derived from wildly reported Cu 2+ as an oxidant complexing agent in DA deposition 52,53 . The positively charged guanidine group in PHMG endued PU‐PDA/PHMG surface with excellent antibacterial property (>96.5%), which was able to destroy bacterial membrane and cause bacteria death 54 .…”

“…Its antibacterial component was derived from wildly reported Cu 2+ as an oxidant complexing agent in DA deposition. 52,53 The positively charged guanidine group in PHMG endued PU-PDA/PHMG surface with excellent antibacterial property (>96.5%), which was able to destroy bacterial membrane and cause bacteria death. 54 However, so many surface modifications like catechol-conjugated polymeric coatings 55 and antibacterial lactoferrin network coating 56 were reported to reduce bacterial contamination of implants, but the biggest shortcoming of these coatings was lacking of ability to prevent bacterial adhesion.…”

Graphene‐Based Engineered Living Materials

“…), three dimensional (scanning electron microscopy, SEM, image of reduced GO, rGO, aerogel, reproduced with permission. [ 16 ] 2023, Elsevier. ), and nanocomposite (TEM image of polysulfide/GO nanocomposite reproduced with permission.…”

“…); and g) SEM image of rGO aerogels indicating the 3D porous structure of these graphene‐based materials (Reproduced with permission. [ 16 ] 2023, Elsevier. ).…”

Exploring two helical centrosymmetric homotetranuclear Cu (II) bis (salamo)‐based complexes

“…Cu (II) ion is adsorbed as cations and enters the bacterial cell membrane, causing protein metabolism disorder, thus preventing cell division. [75][76][77][78][79][80] From Figure 8b (a and b), only the ligand was added to the bacterial disk; the E. coli presents the stick shape; simultaneously, after adding Cu 2+ ions, E. coli begun to shrink and destroy after 6 h due to the strong antibacterial abilities of the formed Cu (II) complexes in Figure 8b (c and d).…”