Fabrication of flower-like Ag/lignin composites and application in antibacterial fabrics

Chen, Kai; Yuan, Shengrong; Li, Jinze; Zhang, Yan; Chen, Fengfeng; Qi, Dongming

doi:10.1016/j.ijbiomac.2022.09.198

Cited by 10 publications

(1 citation statement)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with isotropic spherical nanoparticles, anisotropic spherical nanoparticles would have more advantages in terms of amphiphilicity, magnetism, catalytic activity, and optical and electrical properties due to the anisotropy of their shape or chemical composition, which could initiate an incredible revolution in materials science [15]. Specifically, layered nanoflowers, a class of recently developed anisotropic nanoparticles, have attracted much attention in the fields of catalysis and antibacterial agents [16]. This is because of two reasons: On the one hand, this flower structure not only maintains the high specific surface area and good transparency of the two-dimensional structure but also avoids problems such as stacking and aggregation of the two-dimensional structure [17,18].…”

Section: Introductionmentioning

confidence: 99%

Silver Ions Drive Ordered Self-Assembly Mechanisms and Inherent Properties of Lignin Nanoflowers

Chen,

Liu,

Yuan

et al. 2023

Polymers

Self Cite

View full text Add to dashboard Cite

Designing anisotropic lignin-based particles and promoting the high-value utilization of lignin have nowadays drawn much attention from scientists. However, systematic studies addressing the self-assembly mechanisms of anisotropic lignin-based particles are scarce. In this work, an interaction including the electrostatic forces and chelating forces between lignin and Ag+ was regulated via carboxymethylation modification. Subsequently, the aggregation morphology of carboxymethylated lignin in a Ag+ solution was observed via SEM. The result showed that a large number of Ag+ intercalated into the lignin molecules when the grafting degree of the carboxyl groups increased from 0.17 mmol/g to 0.53 mmol/g, which caused the lignin molecules to gradually transform from disordered blocks to ordered layers. Dynamics research indicated that the adsorption process of Ag+ in carboxymethylated lignin conforms to the Pseudo-first-order kinetic model. The saturated adsorption amount of Ag+ in the carboxymethylated lignin reached 1981.7 mg/g when the grafting rate of carboxyl groups increased to 0.53 mmol/g, which then fully intercalated into lignin molecules and formed a layered structure. The thermodynamic parameters showed that the thermal adsorption process conforms to the Langmuir model, which indicates that Ag+ is monolayer-adsorbed and intercalated into lignin molecules. Meanwhile, the ΔH values are more than 0, which suggests that this adsorption process is a endothermic reaction and that a higher temperature is conducive to an adsorption reaction. Therefore, self-assembly of lignin in a Ag+ solution under 70 °C is more conducive to the formation of a nanoflower structure, which is consistent with our experimental result. Finally, pH-responsive Pickering emulsions were successfully prepared using a lignin-based nanoflowers, which demonstrated their potential as a catalytic platform in the interface catalysis field. This work offers a deeper understanding into the formation mechanism of anisotropic lignin-based nanoflowers and hopes to be helpful for designing and preparing anisotropic lignin-based particles.

show abstract

Section: Introductionmentioning

confidence: 99%

Silver Ions Drive Ordered Self-Assembly Mechanisms and Inherent Properties of Lignin Nanoflowers

Chen,

Liu,

Yuan

et al. 2023

Polymers

Self Cite

View full text Add to dashboard Cite

show abstract

Controllable Silver Release for Efficient Treatment of Drug‐Resistant Bacterial‐Infected Wounds

Shi,

Wang,

Song

et al. 2024

ChemBioChem

View full text Add to dashboard Cite

The use of traditional Ag‐based antibacterial agents is usually accompanied by uncontrollable silver release, which makes it difficult to find a balance between antibacterial performance and biosafety. Herein, we prepared a core‐shell system of ZIF‐8‐derived amorphous carbon‐coated Ag nanoparticles (Ag@C) as an ideal research model to reveal the synergistic effect and structure‐activity relationship of the structural transformation of carbon shell and Ag core on the regulation of silver release behavior. It is found that Ag@C prepared at 600 °C (AC6) exhibits the best ion release kinetics due to the combination of relatively simple shell structure and lower crystallinity of Ag core, thereby exerting stronger antibacterial properties (> 99.999%) at trace doses (20 μg mL‐1) compared with most other Ag‐based materials. Meanwhile, the carbon shell prevents the metal Ag from being directly exposed to the organism and thus endows AC6 with excellent biocompatibility. In animal experiments, AC6 can effectively promote wound healing by inactivating drug‐resistant bacteria while regulating the expression of TNF‐α and CD31. This work provides theoretical support for the scientific design and clinical application of controllable ion‐releasing antibacterial agents.

show abstract

Silver nanoparticles decorated polydopamine-coated pure silica zeolite as an efficient nanocatalyst for organic pollutants removal

Ouyang,

Liu,

Guo

et al. 2024

Applied Surface Science

View full text Add to dashboard Cite

Fabrication of flower-like Ag/lignin composites and application in antibacterial fabrics

Cited by 10 publications

References 40 publications

Silver Ions Drive Ordered Self-Assembly Mechanisms and Inherent Properties of Lignin Nanoflowers

Silver Ions Drive Ordered Self-Assembly Mechanisms and Inherent Properties of Lignin Nanoflowers

Controllable Silver Release for Efficient Treatment of Drug‐Resistant Bacterial‐Infected Wounds

Silver nanoparticles decorated polydopamine-coated pure silica zeolite as an efficient nanocatalyst for organic pollutants removal

Contact Info

Product

Resources

About