Facile synthesis and performance studies of BSA and PDA@Ag hollow microcapsules using SiO2 microspheres as the templates

Tao, Caihong; Ma, Fusheng; Chen, Tiandi; Li, Xiuqi; Guan, Weijia; Zhang, Aqiang

doi:10.1016/j.jallcom.2017.04.178

Cited by 8 publications

(3 citation statements)

References 37 publications

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“…After modifying the HNTs' surface with PDA, a significant reduction in cell viability to ≈40% was observed for the lowest concentration of the nanoparticles. The observed high toxicity of PDA-coated HNTs against HeLa cells is in contrast with previous studies, [57][58][59][60] in which high cytocompatibility of PDA-coated nanoparticles was demonstrated. Our finding can be explained by the fact that the negative charge of the HNTs results in a significant adsorption of the dopamine H + cations on the surface of the nanotubes during the polymerization.…”

Section: Cytocompatibility Studiescontrasting

confidence: 99%

Temperature-responsive and biocompatible nanocarriers based on clay nanotubes for controlled anti-cancer drug release

et al. 2023

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Section: Cytocompatibility Studiescontrasting

confidence: 99%

Temperature-responsive and biocompatible nanocarriers based on clay nanotubes for controlled anti-cancer drug release

et al. 2023

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“…Dopamine has analogous functions to mytilus edulis adhesion proteins, which spontaneously oxidise and polymerise in air under weakly alkaline conditions to form polydopamine (PDA), which can adhere to the surface of almost all types of materials [21,22]. PDA is a polymer with abundant functional groups, excellent hydrophilicity and biocompatibility, and it also has many applications such as drug loading and precious metal nanoparticle loading [23].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Photothermal Antimicrobial Performance of Triple Linkage Hydrogels

Chen,

Yin,

et al. 2024

Coatings

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Often, bacterial infections delay the rate of healing of traumatic wounds, making it critical to improve antimicrobial efficiency. In this paper, titanium nanotubes (TNT) with good antimicrobial and synergistic photothermal properties were used as the core, and mesoporous polydopamine (MPDA) thin films were constructed on their surface. Gold nanoparticles (AuNPs) with excellent photothermal conversion efficiencies (PCE) were incorporated. Finally, a large number of composite nanoparticles were added to polyvinyl alcohol (PVA) and polyethylene glycol (PEG) with wound-restoring ability, and an injectable antimicrobial hydrogel was successfully prepared by a one-pot synthesis. The antimicrobial effect of TNT@MPDA@Au nanoparticles with different concentrations was assessed by in vitro antimicrobial experiments on Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The higher the concentration of nanoparticles under near-infrared light irradiation (NIR), the stronger the antimicrobial effect. The in vitro cytotoxicity of TNT@MPDA and TNT@MPDA@Au nanoparticles on 293T normal cells was tested through CCK-8 assay. The results show that both nanoparticles have favourable biocompatibility. In this paper, a three-component synergistic photothermal antimicrobial nano-antimicrobial platform was constituted by incorporating MPDA, a photothermal agent with excellent biocompatibility and photothermal properties, and AuNPs with good photothermal properties on TNT with excellent photocatalytic properties.

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“…Alternatively, Fe 3 O 4 NPs can be used as cores with Au NPs loaded onto the shell. This coating step often involves the application of polymers, silica or others as sacrificing agents and a step of template removal is required [7,24,[30][31][32][33]. Only a few studies have reported that small size Fe 3 O 4 NPs (<20 nm) prepared by coprecipitation or thermal decomposition methods (without a template removal step) can be deposited onto the particle surface, but these need the assistance of other supports or complicated operating conditions [8,16,17].…”

Section: Introductionmentioning

confidence: 99%

Au-Fe₃O₄ decorated polydopamine hollow nanoparticles as high performance catalysts with magnetic responsive properties

Niu

Wang

et al. 2020

Nanotechnology

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We demonstrated a simple approach for fabricating Au–Fe3O4/PDA hollow nanoparticles as high-performance catalysts for water purification. The polydopamine (PDA) shell was in situ formed on the silica surface from self-polymerization, which acts as a medium support for coupling with metal ions (for Fe3O4 nanoparticle deposition) as well as a reducing agent and stabilizer for Au nanoparticle reduction and deposition. A step of simultaneous Fe3O4 nanoparticle deposition and silica core removal under alkaline conditions is first introduced in this study. This process significantly simplifies previous strategies which typically require the use of poisonous agents such as hydrogen fluoride or additional complicated post-treatment steps. Under optimized conditions, the Au–Fe3O4/PDA hollow nanoparticles show a high saturation magnetization of 18.8 emu g−1 and an excellent catalytic performance for the rapid reduction of p-nitrophenol with the reaction kinetic constant of 0.34 min−1. This catalyst can be easily recovered using a permanent magnet and recycled eight times with a high catalytic cycle stability. The strategy presented in this work provides a facile and versatile approach towards designing complicated Au–Fe3O4/PDA hollow nanostructures, which might have great potential for many applications within biological, energy, and environmental technologies.

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Facile synthesis and performance studies of BSA and PDA@Ag hollow microcapsules using SiO2 microspheres as the templates

Cited by 8 publications

References 37 publications

Temperature-responsive and biocompatible nanocarriers based on clay nanotubes for controlled anti-cancer drug release

Temperature-responsive and biocompatible nanocarriers based on clay nanotubes for controlled anti-cancer drug release

Preparation and Photothermal Antimicrobial Performance of Triple Linkage Hydrogels

Au-Fe₃O₄ decorated polydopamine hollow nanoparticles as high performance catalysts with magnetic responsive properties

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Facile synthesis and performance studies of BSA and PDA@Ag hollow microcapsules using SiO2 microspheres as the templates

Cited by 8 publications

References 37 publications

Temperature-responsive and biocompatible nanocarriers based on clay nanotubes for controlled anti-cancer drug release

Temperature-responsive and biocompatible nanocarriers based on clay nanotubes for controlled anti-cancer drug release

Preparation and Photothermal Antimicrobial Performance of Triple Linkage Hydrogels

Au-Fe3O4 decorated polydopamine hollow nanoparticles as high performance catalysts with magnetic responsive properties

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Product

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Au-Fe₃O₄ decorated polydopamine hollow nanoparticles as high performance catalysts with magnetic responsive properties