Urchin-like Fe3O4@Bi2S3 Nanospheres Enable the Destruction of Biofilm and Efficiently Antibacterial Activities

Xu, Yaqian; Chen, Benjin; Xu, Lingling; Zhang, Guoqiang; Cao, Limian; Liu, Nian; Wang, Wanni; Qian, Haisheng; Shao, Min

doi:10.1021/acsami.3c17888

Cited by 5 publications

(1 citation statement)

References 68 publications

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“…Metal chalcogenides cover a large family of 2D materials, which have gained recent attention due to their potential significance in many technological applications [1][2][3][4][5][6]. Among them, Bi 2 S 3 emerges as a potential candidate in thermoelectric applications, energy harvesting, biomedicine, sensors and optoelectronics, due to its low thermal conductivity, strong spin-orbit coupling, direct band structure and high absorption coefficient [7][8][9][10][11][12]. As shown in Figure 1a, Bi 2 S 3 possesses a lamellar structure in which the bismuth and sulfur atoms are bonded through strong covalent bonds inside the layer, and these layers are linked by van der Waals (vdW) forces to one another [13].…”

Section: Introductionmentioning

confidence: 99%

Water-Based Bi2S3 Nano-Inks Obtained with Surfactant-Assisted Liquid Phase Exfoliation and Their Direct Processing into Thin Films

Pozzati,

Boll,

Crisci

et al. 2024

Colloids and Interfaces

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Bi2S3 has gained considerable attention as a semiconductor for its versatile functional properties, finding application across various fields, and liquid phase exfoliation (LPE) serves as a straightforward method to produce it in nano-form. Till now, the commonly used solvent for LPE has been N-Methyl-2-pyrrolidone, which is expensive, toxic and has a high boiling point. These limitations drive the search for more sustainable alternatives, with water being a promising option. Nonetheless, surfactants are necessary for LPE in water due to the hydrophobic nature of Bi2S3, and organic molecules with amphoteric characteristics are identified as suitable surfactants. However, systematic studies on the use of ionic surfactants in the LPE of Bi2S3 have remained scarce until now. In this work, we used sodium dodecyl sulfate (SDS), sodium dodecylbenzene sulfonate (SDBS) and sodium hexadecyl sulfonate (SHS) as representative species and we present a comprehensive investigation into their effects on the LPE of Bi2S3. Through characterizations of the resulting products, we find that all surfactants effectively exfoliate Bi2S3 into few-layer species. Notably, SDBS demonstrates superior stabilization of the 2D layers compared to the other surfactants, while SHS becomes the most promising surfactant for obtaining products with high yield. Moreover, the resulting nano-inks are used for fabricating films using spray-coating, reaching a fine tuning of band gap by controlling the number of cycles, and paving the way for the utilization of 2D Bi2S3 in optoelectronic devices.

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Section: Introductionmentioning

confidence: 99%

Water-Based Bi2S3 Nano-Inks Obtained with Surfactant-Assisted Liquid Phase Exfoliation and Their Direct Processing into Thin Films

Pozzati,

Boll,

Crisci

et al. 2024

Colloids and Interfaces

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Biomimetic Materials for Antibacterial Applications

Zhang,

Dong,

Liu

et al. 2024

Small

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The rise of antibiotic resistance poses a critical threat to global health, necessitating the development of novel antibacterial strategies to mitigate this growing challenge. Biomimetic materials, inspired by natural biological systems, have emerged as a promising solution in this context. These materials, by mimicking biological entities such as plants, animals, cells, viruses, and enzymes, offer innovative approaches to combat bacterial infections effectively. This review delves into the integration of biomimicry with materials science to develop antibacterial agents that are not only effective but also biocompatible and less likely to induce resistance. The study explores the design and function of various biomimetic antibacterial materials, highlighting their therapeutic potential in anti‐infection applications. Further, the study provides a comprehensive summary of recent advancements in this field, illustrating how these materials have been engineered to enhance their efficacy and safety. The review also discusses the critical challenges facing the transition of these biomimetic strategies from the laboratory to clinical settings, such as scalability, cost‐effectiveness, and long‐term stability. Lastly, the study discusses the vast opportunities that biomimetic materials hold for the future of antibacterial therapy, suggesting that continued research and multidisciplinary collaboration will be essential to realize their full potential.

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Strategically Engineered Ru(II) Complexes with Enhanced ROS Activity Enabling Potent Sonodynamic Effect against Multidrug-Resistant Biofilms

Wang,

Luo,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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Sonodynamic therapy (SDT) can generate reactive oxygen species (ROS) to combat multidrug-resistant biofilms, which pose significant challenges to human health. As the key to producing ROS in SDT, the design of sonosensitizers with optimal molecular structures for sufficient ROS generation and activity in complex biofilm matrix is essential. In this study, we propose a πexpansion strategy and synthesize a series of small-molecule metal Ru(II) complexes (Ru1−Ru4) as sonosensitizers (Ru1−Ru4) to enhance the efficacy of SDT. Among these complexes, Ru4 demonstrates remarkable ROS generation capability (∼65.5-fold) that surpasses most commercial sonosensitizers (1.3-to 6.7-fold). Through catalyzing endogenous H 2 O 2 decomposition, Ru4 facilitates the production of abundant O 2 as a resource for 1 O 2 and the generation of new ROS (i.e., • OH) for improving SDT. Furthermore, Ru4 maintains the sustained ROS activity via consuming the interferences (e.g., glutathione) that react with ROS. Due to these unique advantages, Ru4 exhibits potent biofilm eradication ability against methicillin-resistant Staphylococcus aureus (MRSA) both in vitro and in vivo, underscoring its potential use in clinical settings. This work introduces a new approach for designing effective sonosensitizers to eliminate biofilm infections, addressing a critical need in healthcare management.

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Urchin-like Fe₃O₄@Bi₂S₃ Nanospheres Enable the Destruction of Biofilm and Efficiently Antibacterial Activities

Cited by 5 publications

References 68 publications

Water-Based Bi2S3 Nano-Inks Obtained with Surfactant-Assisted Liquid Phase Exfoliation and Their Direct Processing into Thin Films

Water-Based Bi2S3 Nano-Inks Obtained with Surfactant-Assisted Liquid Phase Exfoliation and Their Direct Processing into Thin Films

Biomimetic Materials for Antibacterial Applications

Strategically Engineered Ru(II) Complexes with Enhanced ROS Activity Enabling Potent Sonodynamic Effect against Multidrug-Resistant Biofilms

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