Abstract:Two-dimensional
material titanium carbide (Ti3C2T
x
MXene) has been widely used
for building diverse functional materials; however, the disadvantages
of unsatisfactory yield and low concentration during the preparation
process generally limit its large-scale promotion. In the present
work, an MXene dispersion with enhanced yield (90%), high concentration
(45 mg/mL), and excellent dispersibility was successfully prepared.
Subsequently, the active MXene nanosheets were effectively in situ
deposition onto the si… Show more
“…Since MXenes with layered structures exhibit unique surface chemical properties and comparable electrical conductivity to metals, they have been widely applied for fabricating flexible smart fabrics through dip coating and spray coating approaches [ 157 , 158 ]. Yan et al [ 45 ] reported the preparation of MXenes-decorated silk fabric with satisfying UV protection performance, electrothermal conversion capability and photothermal antibacterial property through in-situ dip-coating Ti 3 C 2 T x nanosheets onto silk fabric (Fig. 13 a).…”
Section: Applications Of Mxenes In Antibacterial and Related Fieldsmentioning
confidence: 99%
“… Fig. 13 a Schematic illustration of preparation and derivative functions of MXenes-based multifunctional silk fabric; b IR thermal images of the MXenes@silk; c The antibacterial efficiency of the different samples contacted for 20 min [ 45 ]. Copyright 2021, American Chemical Society.…”
Section: Applications Of Mxenes In Antibacterial and Related Fieldsmentioning
confidence: 99%
“…Moreover, profiting from their desired merits, including hydrophilicity, high aspect ratio morphology, and metallic conductivity, when MXenes are incorporated into thin film or hydrogel systems, they offer versatile potentials to design MXenes-based antibacterial soft materials with tunable properties [ 43 , 44 ]. They also possess superb mechanical stability and solution processability, suitable for further assembly into various geometry and textile structures, thus realizing the concept of the recent trend in flexible and wearable electronic textiles for innovative antimicrobial applications [ 45 , 46 ].…”
Highlights
Fabrication, characterizations and photothermal properties of MXenes are systematically described.
Photothermal-derived antibacterial performances and mechanisms of MXenes-based materials are summarized and reviewed.
Recent advances in the derivative applications relying on antibacterial properties of MXenes-based materials, including in vitro and in vivo sterilization, solar water evaporation and purification, and flexible antibacterial fabrics, are investigated.
Abstract
The pernicious bacterial proliferation and emergence of super-resistant bacteria have already posed a great threat to public health, which drives researchers to develop antibiotic-free strategies to eradicate these fierce microbes. Although enormous achievements have already been achieved, it remains an arduous challenge to realize efficient sterilization to cut off the drug resistance generation. Recently, photothermal therapy (PTT) has emerged as a promising solution to efficiently damage the integrity of pathogenic bacteria based on hyperthermia beyond their tolerance. Until now, numerous photothermal agents have been studied for antimicrobial PTT. Among them, MXenes (a type of two-dimensional transition metal carbides or nitrides) are extensively investigated as one of the most promising candidates due to their high aspect ratio, atomic-thin thickness, excellent photothermal performance, low cytotoxicity, and ultrahigh dispersibility in aqueous systems. Besides, the enormous application scenarios using their antibacterial properties can be tailored via elaborated designs of MXenes-based materials. In this review, the synthetic approaches and textural properties of MXenes have been systematically presented first, and then the photothermal properties and sterilization mechanisms using MXenes-based materials are documented. Subsequently, recent progress in diverse fields making use of the photothermal and antibacterial performances of MXenes-based materials are well summarized to reveal the potential applications of these materials for various purposes, including in vitro and in vivo sterilization, solar water evaporation and purification, and flexible antibacterial fabrics. Last but not least, the current challenges and future perspectives are discussed to provide theoretical guidance for the fabrication of efficient antimicrobial systems using MXenes.
“…Since MXenes with layered structures exhibit unique surface chemical properties and comparable electrical conductivity to metals, they have been widely applied for fabricating flexible smart fabrics through dip coating and spray coating approaches [ 157 , 158 ]. Yan et al [ 45 ] reported the preparation of MXenes-decorated silk fabric with satisfying UV protection performance, electrothermal conversion capability and photothermal antibacterial property through in-situ dip-coating Ti 3 C 2 T x nanosheets onto silk fabric (Fig. 13 a).…”
Section: Applications Of Mxenes In Antibacterial and Related Fieldsmentioning
confidence: 99%
“… Fig. 13 a Schematic illustration of preparation and derivative functions of MXenes-based multifunctional silk fabric; b IR thermal images of the MXenes@silk; c The antibacterial efficiency of the different samples contacted for 20 min [ 45 ]. Copyright 2021, American Chemical Society.…”
Section: Applications Of Mxenes In Antibacterial and Related Fieldsmentioning
confidence: 99%
“…Moreover, profiting from their desired merits, including hydrophilicity, high aspect ratio morphology, and metallic conductivity, when MXenes are incorporated into thin film or hydrogel systems, they offer versatile potentials to design MXenes-based antibacterial soft materials with tunable properties [ 43 , 44 ]. They also possess superb mechanical stability and solution processability, suitable for further assembly into various geometry and textile structures, thus realizing the concept of the recent trend in flexible and wearable electronic textiles for innovative antimicrobial applications [ 45 , 46 ].…”
Highlights
Fabrication, characterizations and photothermal properties of MXenes are systematically described.
Photothermal-derived antibacterial performances and mechanisms of MXenes-based materials are summarized and reviewed.
Recent advances in the derivative applications relying on antibacterial properties of MXenes-based materials, including in vitro and in vivo sterilization, solar water evaporation and purification, and flexible antibacterial fabrics, are investigated.
Abstract
The pernicious bacterial proliferation and emergence of super-resistant bacteria have already posed a great threat to public health, which drives researchers to develop antibiotic-free strategies to eradicate these fierce microbes. Although enormous achievements have already been achieved, it remains an arduous challenge to realize efficient sterilization to cut off the drug resistance generation. Recently, photothermal therapy (PTT) has emerged as a promising solution to efficiently damage the integrity of pathogenic bacteria based on hyperthermia beyond their tolerance. Until now, numerous photothermal agents have been studied for antimicrobial PTT. Among them, MXenes (a type of two-dimensional transition metal carbides or nitrides) are extensively investigated as one of the most promising candidates due to their high aspect ratio, atomic-thin thickness, excellent photothermal performance, low cytotoxicity, and ultrahigh dispersibility in aqueous systems. Besides, the enormous application scenarios using their antibacterial properties can be tailored via elaborated designs of MXenes-based materials. In this review, the synthetic approaches and textural properties of MXenes have been systematically presented first, and then the photothermal properties and sterilization mechanisms using MXenes-based materials are documented. Subsequently, recent progress in diverse fields making use of the photothermal and antibacterial performances of MXenes-based materials are well summarized to reveal the potential applications of these materials for various purposes, including in vitro and in vivo sterilization, solar water evaporation and purification, and flexible antibacterial fabrics. Last but not least, the current challenges and future perspectives are discussed to provide theoretical guidance for the fabrication of efficient antimicrobial systems using MXenes.
“…The common PTAs include metal and metal oxide/sulfide nanoparticles (e.g., Au, Cu, MoS 2 ), carbon nanoparticles (e.g., CNT, rGO), and conjugated polymers (e.g., polyaniline (PANI), polydopamine (PDA)) 102–110 . For example, a multifunctional silk fabric deposited with titanium carbide (Ti 3 C 2 T x MXene) was fabricated using dip‐coating, which demonstrated rapid photothermal antibacterial activity against E. coli with 20 min of light irradiation 111 . Combining with other antibacterial strategies, such as antibiotic, inorganic antibacterial agents, PDAT, etc., a synergistic antibacterial effect can be achieved 112–115 .…”
Refractory wounds have always been an important issue to healthcare systems, whose healing process is always delayed by multiple factors, including bacterial infections, chronic inflammation, and excessive exudates, etc. Employing multifunctional wound dressings is recognized as an effective strategy to deal with refractory wounds, which has yielded promising outcomes in recent years. Among these advanced wound dressings, fibrous dressings have gained growing attention due to their unique merits. Such wound dressings have demonstrated great potential in delivering theranostic agents, such as antibacterial agents, anti-inflammatory drugs, growth factors, and diagnostic probes, etc., for the purposes of accelerating wound healing. This paper reviews the development of multifunctional fibrous dressings and their applications in treating refractory wounds. The construction approaches of novel fibrous dressing with capabilities of antibacterial, anti-inflammation, exudate management and diagnosis were also introduced. Furthermore, the existing problems and challenges are also discussed briefly.
“…Antibacterial cellulose-based composites were developed via the incorporation of nanoparticle suspensions, plant extracts, and other polymers . Additionally, Yan et al imparted fast and efficient photothermal antibacterial properties to textiles by coating MXene nanosheets. , More recently, researchers have paid more attention to some sulfides, such as ZnS and CuS, due to their unique light-to-heat conversion performance. , As a low-cost photothermal semiconductor material, copper sulfide nanoparticles (CuSNPs) have a wide range of absorption characteristics in the near-infrared region and have been widely used in various fields, including photothermal therapy, , photocatalytic degradation, wastewater treatment, and energy storage of supercapacitors, to name a few. CuSNPs can be easily synthesized by means of a reflux condensation method, a hydrothermal method and a thermal decomposition method .…”
Natural
textiles provide an ideal environment for bacterial growth,
causing harm to human health. In order to overcome this issue, a photothermal
antibacterial technique has been employed as a facile strategy in
recent years. Copper sulfide nanoparticles (CuSNPs) exhibit a satisfactory
photothermal effect and can be potentially used to construct antibacterial
textiles. Herein, we prepared a photothermal antibacterial silk fabric
via a two-step method, where a chitosan quaternary ammonium salt (QCS)
was used as a template to temporarily fix negative sulfur ions, which
were transferred to silk fibers containing copper ammonia ions. The
morphology, structure, and corresponding antibacterial ability for
the obtained CuSNP-deposited silk fabric were examined. The obtained
results revealed that the prepared materials, formed by interactions
with silk fibers and QCS chains, exhibited uniform size and typical
structural characteristics, promoting UV resistance and a good light-to-heat
conversion effect. Moreover, a rapid antibacterial efficiency of the
composite silk fabric was determined under light irradiation (400
mW/cm2), resulting in 99.99% bacteria death of Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) within 5 min of irradiation. Additionally,
the antibacterial rate of CuSNP-deposited with QCS as a template (SF/QCS/CuS)
remained at a high level even after 10 washes, indicating a rapid
bonding rate of the photothermal nanoparticles. This work develops
a novel and efficient strategy for the construction of a photothermal
antibacterial silk fabric, which expands its wide applications in
the field of antibacterial materials.
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