Antibacterial, photothermal and stable Ag-titanium-oxo-clusters hydrogel designed for wound healing

Luo, Wen; Hu, Bin; Zhang, Huali; Li, Chunyang; Shi, Yupeng; Li, Xingchen; Jin, Lin

doi:10.1016/j.matdes.2023.111674

Cited by 23 publications

(16 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the results (figure 11), the number of colonies found in both bacterial strains became zero when the samples were treated under light, which illustrates the photoactivity of the powder toward the successful removal of pathogenic bacteria. On the other hand, the antibacterial performance decreased dramatically at dark, and according to the previous reports, this low antibacterial activity can be assigned to the chemical content of the materials (Ag species mainly) [58]. To verify the destructive performance of the as-prepared photoactive structure against bacterial cells under light, TEM images of the bacteria were provided after 2 h of the treatment time with Ag/AgCl/Bi 2 S 3 .…”

Section: Photoinactivation Of E Coli and S Aureus Pathogenic Microorg...mentioning

confidence: 85%

Efficient visible-light-driven photocatalytic removal of Acid Blue 92, E. coli, and S. aureus over Ag-AgCl nanoparticles-decorated bismuth sulfide microparticles

Dawi,

Padervand,

Bargahi

et al. 2023

Mater. Res. Express

View full text Add to dashboard Cite

A visible-light-active plasmonic photocatalyst was prepared from bismuth sulfide particles modified with Ag-AgCl nanoparticles. The structure of the photocatalyst was analyzed using powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), elemental mapping, nitrogen adsorption-desorption isotherms (BET-BJH), and diffuse reflectance spectroscopy (DRS). To evaluate the photocatalytic performance, Acid Blue 92 (AB92) azo dye was degraded in an aqueous solution under visible light illumination. It was found that 0.025 g of the photocatalyst was able to remove over 98% of the AB92 solution at a concentration of 15 ppm and pH 7.5, in accordance with pseudo-first-order kinetics. Superoxide anion radicals (O2-˙) are key components of the photodegradation pathway. Furthermore, the antibacterial activity of the material was investigated against E. coli and S. aureus under irradiation and dark conditions. Transmission electron microscopy (TEM) images of the treated cells showed that the plasmonic photocatalyst destroyed the gram-positive and gram-negative bacterial cell wall structures within two hours of treatment. It is possible that this was caused by efficient generation of destructive superoxide anion radicals on the surface of Ag-AgCl/Bi2S3 particles. 

show abstract

Section: Photoinactivation Of E Coli and S Aureus Pathogenic Microorg...mentioning

confidence: 85%

Efficient visible-light-driven photocatalytic removal of Acid Blue 92, E. coli, and S. aureus over Ag-AgCl nanoparticles-decorated bismuth sulfide microparticles

Dawi,

Padervand,

Bargahi

et al. 2023

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…[245] Luo et al introduced Ag 9 Ti 4 as PTA into PVA/PDA hydrogel system to design an antibacterial, photothermal and stable Ag-Titanium-oxygen cluster hydrogel system, which has high temperature and antibacterial properties under near-infrared irradiation. [246] Additionally, Liu et al created a new hydrogel (GA-Ag NP hydrogel) with a remarkable bactericidal effect by incorporating gallic acid functional silver nanoparticles (GA-Ag NPs) into the network structure of polysaccharide. In addition to the photothermal sterilization effect, the stimulation of near-infrared laser irradiation when GA-Ag NP hydrogel adhered to the wound surface promoted the release of Ag+, accelerated the interaction between bacteria and protein mercaptan groups on the damaged membrane, and caused bacterial death.…”

Section: Antibacterial Therapymentioning

confidence: 99%

Photo‐Controllable Smart Hydrogels for Biomedical Application: A Review

Zhao,

Ran,

Lee

et al. 2023

Small Methods

View full text Add to dashboard Cite

Nowadays, smart hydrogels are being widely studied by researchers because of their advantages such as simple preparation, stable performance, response to external stimuli, and easy control of response behavior. Photo‐controllable smart hydrogels (PCHs) are a class of responsive hydrogels whose physical and chemical properties can be changed when stimulated by light at specific wavelengths. Since the light source is safe, clean, simple to operate, and easy to control, PCHs have broad application prospects in the biomedical field. Therefore, this review timely summarizes the latest progress in the PCHs field, with an emphasis on the design principles of typical PCHs and their multiple biomedical applications in tissue regeneration, tumor therapy, antibacterial therapy, diseases diagnosis and monitoring, etc. Meanwhile, the challenges and perspectives of widespread practical implementation of PCHs are presented in biomedical applications. This study hopes that PCHs will flourish in the biomedical field and this review will provide useful information for interested researchers.

show abstract

“…Interest in Ti(IV)-oxo complexes also stems from their potential biomedical applications. Studies on the utilization of TOCs in photodynamic therapy [27] and as antimicrobial agents [5,13,24,[28][29][30] are particularly significant. With the ongoing search for materials possessing bactericidal properties and the ability to prevent microbial growth, our research has concentrated on the latter aspect.…”

Section: Introductionmentioning

confidence: 99%

Structural Characterization and Bioactivity of a Titanium(IV)-Oxo Complex Stabilized by Mandelate Ligands

Kubiak,

Muzioł,

Wrzeszcz

et al. 2024

Molecules

View full text Add to dashboard Cite

Research on titanium-oxo complexes (TOCs) is usually focused on their structure and photocatalytic properties. Findings from these investigations further sparked our interest in exploring their potential biological activities. In this study, we focused on the synthesis and structure of a compound with the general formula [Ti8O2(OiPr)20(man)4] (1), which was isolated from the reaction mixture of titanium(IV) isopropoxide with mandelic acid (Hman) in a molar ratio of 4:1. The structure (1) was determined using single-crystal X-ray diffraction, while spectroscopic studies provided insights into its physicochemical properties. To assess the potential practical applications of (1), its microcrystals were incorporated into a polymethyl methacrylate (PMMA) matrix, yielding composite materials of the type PMMA + (1) (2 wt.%, 5 wt.%, 10 wt.%, and 20 wt.%). The next stage of our research involved the evaluation of the antimicrobial activity of the obtained materials. The investigations performed demonstrated the antimicrobial activity of pure (1) and its composites (PMMA + (1)) against both Gram-positive and Gram-negative strains. Furthermore, MTT tests conducted on the L929 murine fibroblast cell line confirmed the lack of cytotoxicity of these composites. Our study identified (1) as a promising antimicrobial agent, which is also may be use for producing composite coatings.

show abstract

Antibacterial, photothermal and stable Ag-titanium-oxo-clusters hydrogel designed for wound healing

Cited by 23 publications

References 35 publications

Efficient visible-light-driven photocatalytic removal of Acid Blue 92, E. coli, and S. aureus over Ag-AgCl nanoparticles-decorated bismuth sulfide microparticles

Efficient visible-light-driven photocatalytic removal of Acid Blue 92, E. coli, and S. aureus over Ag-AgCl nanoparticles-decorated bismuth sulfide microparticles

Photo‐Controllable Smart Hydrogels for Biomedical Application: A Review

Structural Characterization and Bioactivity of a Titanium(IV)-Oxo Complex Stabilized by Mandelate Ligands

Contact Info

Product

Resources

About