Plasmonic molybdenum oxide nanosheets supported silver nanocubes for enhanced near-infrared antibacterial activity: Synergism of photothermal effect, silver release and photocatalytic reactions

Yin, Qiang; Tan, Linxiang; Lang, Qingqing; Ke, Xiaoxia; Bai, Lijie; Guo, Kaiyan; Qiao, Ru; Bai, Song

doi:10.1016/j.apcatb.2017.11.024

Cited by 119 publications

(58 citation statements)

References 42 publications

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“…Over the past decade, semiconductor photocatalyst has played a pivotal role in the fields of solar energy harvesting, clean chemical synthesis, photocatalytic antibacterial agents, and environmental technology due to its advantages over conventional heat‐driven catalysis, which generally depend on high thermal energy that results in low product selectivity . Among the semiconductors reported to date, silver halides, AgX; (X=Cl, Br and I) are a family of materials, which display a wide range of applications as antimicrobial agents, catalysts for water oxidation, and photocatalysts for environmental remediation …”

Section: Introductionmentioning

confidence: 99%

Ag Nanoparticles/AgX (X=Cl, Br and I) Composites with Enhanced Photocatalytic Activity and Low Toxicological Effects

et al. 2020

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Periodic structures induced by electron irradiation are a unique phenomenon when electron beams irradiate on the surface of some materials. These periodic structures have potential for technological applications. However, the fuzzy nature of the electron-induced structuring hinders its further exploration in such applications. In this paper, novel Ag nanoparticle/AgX (X=Cl, Br and I) composites, with enhanced photocatalytic activity and low toxicological effects, were prepared, for the first time, using electron beam irradiation. The remarkable advantage of this approach is that the Ag nanoparticles/AgX composites can be easily prepared in one-step without the need for high-pressure conditions, surfactants, ionic liquids, or reducing agents. Furthermore, our method does not involve any toxic substances, which makes the as-synthesized samples highly applicable for technological applications. The structure, morphology and physicochemical properties of the Ag nanoparticles/AgX composites were studied using various characterization techniques. Using first-principles calculations based on density functional theory and the quantum theory of atoms in molecules, we reveal how the concentration of excess electrons in the AgX materials induces the formation of the Ag nanoparticles under electron beam irradiation. These results extend the fundamental understanding of the atomic process underlying the mechanism of AgÀ X bond rupture observed during the transformation induced via electron irradiation of the AgX crystals by increasing the total number of electrons in the bulk structure. Thus, our findings provide viable guidance for the realization of new materials for the degradation of contaminated wastewater with low toxicity.

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Section: Introductionmentioning

confidence: 99%

Ag Nanoparticles/AgX (X=Cl, Br and I) Composites with Enhanced Photocatalytic Activity and Low Toxicological Effects

et al. 2020

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“…Here, we summarize several common 2D NBG-mediated synergistic antibacterial methods: (i) synergy of PTT with PDT 137-139; (ii) synergy of PTT with metallic ions release (Ag, Au, etc. ); (iii) synergy of chemotherapy with PTT 140; (iv) synergy of PTT with oxidative stress 79; (v) synergy of PTT with catalytic 139, 141-144; (vi) and tri-modal synergistic antibacterial 145, 146. At the same time, the synergetic antibacterial mechanism and application are detailedly discussed.…”

Section: Antibacterial Mechanisms and Physicochemical Characteristmentioning

confidence: 99%

Two-dimensional nanomaterials beyond graphene for antibacterial applications: current progress and future perspectives

et al. 2020

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The marked augment of drug-resistance to traditional antibiotics underlines the crying need for novel replaceable antibacterials. Research advances have revealed the considerable sterilization potential of two-dimension graphene-based nanomaterials. Subsequently, two-dimensional nanomaterials beyond graphene (2D NBG) as novel antibacterials have also demonstrated their power for disinfection due to their unique physicochemical properties and good biocompatibility. Therefore, the exploration of antibacterial mechanisms of 2D NBG is vital to manipulate antibacterials for future applications. Herein, we summarize the recent research progress of 2D NBG-based antibacterial agents, starting with a detailed introduction of the relevant antibacterial mechanisms, including direct contact destruction, oxidative stress, photo-induced antibacterial, control drug/metallic ions releasing, and the multi-mode synergistic antibacterial. Then, the effect of the physicochemical properties of 2D NBG on their antibacterial activities is also discussed. Additionally, a summary of the different kinds of 2D NBG is given, such as transition-metal dichalcogenides/oxides, metal-based compounds, nitride-based nanomaterials, black phosphorus, transition metal carbides, and nitrides. Finally, we rationally analyze the current challenges and new perspectives for future study of more effective antibacterial agents. This review not only can help researchers grasp the current status of 2D NBG antibacterials, but also may catalyze breakthroughs in this fast-growing field.

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“…Molybdenum oxide nanoparticles display a strong absorption in the NIR region, originating from the intervalence charge-transfer transition between the Mo 5+ and Mo 6+ states [ 99 ]. Ag nanocubes supported on plasmonic MoO 3− x nanosheets were designed to be a highly efficient NIR-driven antibacterial agent [ 100 ]. This approach enhanced the nanocube antibacterial activity towards E. coli and S. aureus upon NIR light irradiation due to the local temperature increase, release of silver ions and bacterial membrane oxidation.…”

Section: Reviewmentioning

confidence: 99%

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

Borzenkov¹,

Pallavicini²,

Taglietti³

et al. 2020

Beilstein J. Nanotechnol.

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Bacterial contamination is a severe issue that affects medical devices, hospital tools and surfaces. When microorganisms adhere to a surface (e.g., medical devices or implants) they can develop into a biofilm, thereby becoming more resistant to conventional biocides and disinfectants. Nanoparticles can be used as an antibacterial agent in medical instruments or as a protective coating in implantable devices. In particular, attention is being drawn to photothermally active nanoparticles that are capable of converting absorbed light into heat. These nanoparticles can efficiently eradicate bacteria and biofilms upon light activation (predominantly near the infrared to near-infrared spectral region) due a rapid and pronounced local temperature increase. By using this approach new, protective, antibacterial surfaces and materials can be developed that can be remotely activated on demand. In this review, we summarize the state-of-the art regarding the application of various photothermally active nanoparticles and their corresponding nanocomposites for the light-triggered eradication of bacteria and biofilms.

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Plasmonic molybdenum oxide nanosheets supported silver nanocubes for enhanced near-infrared antibacterial activity: Synergism of photothermal effect, silver release and photocatalytic reactions

Cited by 119 publications

References 42 publications

Ag Nanoparticles/AgX (X=Cl, Br and I) Composites with Enhanced Photocatalytic Activity and Low Toxicological Effects

Ag Nanoparticles/AgX (X=Cl, Br and I) Composites with Enhanced Photocatalytic Activity and Low Toxicological Effects

Two-dimensional nanomaterials beyond graphene for antibacterial applications: current progress and future perspectives

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

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