Advanced Healthcare Materials
·
2023
·
IF 10
Zongjia Li,Wei Wei,Miaomiao Zhang,Xinyue Guo,Bailin Zhang,Dapeng Wang,Xiue Jiang,Fangxin Liu,Jilin Tang
Humans are threatened by bacteria and other microorganisms, resulting in countless pathogen-related infections and illnesses. Accumulation of reactive oxygen species (ROS) in infected wounds activates strong inflammatory responses. The overuse of antibiotics has led to increasing bacterial resistance. Therefore, effective ROS scavenging and bactericidal capacity are essential and the advanced development of collaborative therapeutic techniques to combat bacterial infections is needed. Here, this work developes an MXene@polydopamine-cryptotanshinone (MXene@PDA-CPT) antibacterial nanosystem with excellent reactive oxygen and nitrogen species scavenging ability, which effectively inactivates drug-resistant bacteria and biofilms, thereby promoting wound healing. In this system, the adhesion of polydopamine nanoparticles to MXene produced a photothermal synergistic effect and free radical scavenging activity, presenting a promising antibacterial and anti-inflammatory strategy. This nanosystem causes fatal damage to bacterial membranes. The loading of cryptotanshinone further expanded the advantages of the system, causing a stronger bacterial killing effect and inflammation mitigatory effect with desired biosafety and biocompatibility. In addition, combining nanomaterials and active ingredients of traditional Chinese medicine, this work provides a new rationale for the future development of wound dressings, which contributes to eliminating bacterial resistance, delaying disease deterioration, and alleviating the pain of patients.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2023
·
IF 5
Tianyi Zhang,Baiqing Song,XinFeng Li,Kaili Yang,Jie Yang,Guangming Tian,Jianhua Ma
MXene is a two-dimensional material for preparing wearable electronic textiles. However, maintaining the conductivity, stability, and comfort of MXene-based functional textiles in humid air or water is a key challenge. In this work, the active adsorption sites on cotton fabric surfaces were increased by low-temperature micro-dissolution. It also enhances the bonding ability of MXene with cotton fabrics by using polydopamine (PDA) as an interface agent. Finally, 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES) was impregnated on the surface of the cotton fabric modified by MXene, which effectively avoided the oxidation of MXene while imparting good hydrophobic properties to the fabric. The composite conductive fabric shows excellent electro/photothermal performance. Driven by low voltage, the surface temperature of the fabric can reach 140 °C within 30 s. After 20 s of irradiation by a 250 W infrared lamp, the surface of the fabric can rapidly warm to 110 °C. The fabric shows excellent EMI shielding performance, with an EMI shielding effect of 32 dB at 8–12 GHz. In addition, the fabric exhibits good sensing stability and fast response and recovery in stress sensing. This material has a simple preparation process, diverse functional characteristics, and great potential in the next generation of intelligent wearable electronic products.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2023
·Vol. 21
·期 1
·1-21
·
IF 10.2
Yu Yang,Sun Houyi,Lu Qunshan,Sun Junyuan,Zhang Pengfei,Zeng Linran,Vasilev Krasimir,Zhao Yunpeng,Chen Yu,Liu Peilai
Prolonged and incurable bacterial infections in soft tissue and bone are currently causing large challenges in the clinic. Two-dimensional (2D) materials have been designed to address these issues, but materials with satisfying therapeutic effects are still needed. Herein, CaO2-loaded 2D titanium carbide nanosheets (CaO2-TiOx@Ti3C2, C-T@Ti3C2) were developed. Surprisingly, this nanosheet exhibited sonodynamic ability, in which CaO2 caused the in situ oxidation of Ti3C2 MXene to produce acoustic sensitiser TiO2 on its surface. In addition, this nanosheet displayed chemodynamic features, which promoted a Fenton reaction triggered by self-supplied H2O2. We detected that C-T@Ti3C2 nanosheets increased reactive oxygen species (ROS) production in response to sonodynamic therapy, which displayed an ideal antibacterial effect. Furthermore, these nanoreactors facilitated the deposition of Ca2+, which promoted osteogenic transformation and enhanced bone quality in osteomyelitis models. Herein, a wound healing model and prosthetic joint infection (PJI) model were established, and the C-T@Ti3C2 nanosheets played a protective role in these models. Taken together, the results indicated that the C-T@Ti3C2 nanosheets function as a multifunctional instrument with sonodynamic features, which might reveal information regarding the treatment of bacterial infections during wound healing.Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Jie Tang,Fuzhong Wu,Xinyi Dai,Jiawang Zhou,Huixia Pang,Xingyu Duan,Bo Xiao,Dongjia Li,Junliang Long
Silicon (Si)-based materials were considered to be the most promising anodes for next-generation lithium-ion batteries because of their high theoretical specific capacity. However, huge volume expansion during lithiation/de-lithiation processes and low electrical conductivity cause its rapid degradation. Most research has focused on the modification of Si, binders, and electrolytes, however, little attention has been paid to conductive additives, a small but extremely important component of lithium-ion battery materials. Herein, 2D MXene nanosheet owing to excellent electrical conductivity is used as the conductive additive to improve the capacity and cycle performance of Si anodes. As a result, the Si-M1 electrode demonstrates a discharge specific capacity of 2522.6 mAh/g at a current density of 1A/g after 100 cycles and 1867.1 mAh·g −1 at 5A/g. In this regard, good electrical contact was maintained, along with the inhabiting generation of dead Si attributed to the volume effect that was suppressed by MXene. Besides, the terminal groups of MXene are conducive to the formation of materials with good conductivity in solid electrolyte interphase. This new insight may contribute to promoting the application of Si anodes and promising extended to other anodes living with huge volume expansion.
✓ 已验证
产品关联
DOI
高影响因子
HIGH PERFORMANCE POLYMERS
·
2022
·
IF 1.73
Hongyu Dong,Wei Yang,Ao Sun,Yingqing Zhan,Yiwen Chen,Ximin Chen
2D lamellar MXene nanosheets have shown the promising candidate for preparing dielectric polymer composites due to their excellent electrical and mechanical properties. However, the high dielectric loss and low temperature resistance restrict their further application, which are still big challenges. In this work, MXene nanosheets were modified by dopamine mediated chemical crosslinking with polyethylenimine, which was further incorporated into the temperature-resistant poly (arylene ether nitrile) (PEN) matrix via a simple solution-casting method to prepare the dielectric MXene/PEN composite film. Specially, the insulating layer originated from polyethylenimine and polydopamine not only enhanced the interface polarization and the uniform dispersion of MXene in the polymer matrix, but also prevented the formation of conductive network. As a result, the MXene/PEN composite film achieved the high dielectric constant of 13.3 (1 kHz) when filling content was 7 wt%, and the dielectric loss was suppressed to 0.042. As the filling content reached 5 wt%, the MXene/PEN composite film had the maximum tensile strength and tensile modulus of 70.9 MPa and 3042.6 MPa, respectively, while maintaining a high elongation at break larger than 6.5%. In addition, the composite film retained the thermal decomposition temperature (T10%) of 460–521°C and the glass transition temperature higher than 149°C. Therefore, this work provides an alternative way to prepare thermally stable and dielectric polymer composite film with high mechanical strength and low dielectric loss, which is essential to the modern electronic applications.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xiaoguang Sun,Chengcheng Ma,Fubin Ma,Tong Wang,Chao Feng,Wei Wang
The self-healing performance of anticorrosive coatings is critical to restoring their protective function in the event of failure to ensure durability in harsh corrosive conditions. In this work, a novel self-healing anticorrosive coating was fabricated by two-dimensional transition metal carbides and carbonitrides (MXenes) and mesoporous silica nanoparticles (MSNs) loading tannic acid (TA) as corrosion inhibitors that can effectively protect low-carbon steel from corrosion damage. The TA as corrosion inhibitors were loaded into the mesoporous silica nanoparticles, and the loading capacity reached about 71.71%. The synthesized epoxy/TA@MXene-SiO 2 coating was characterized in detail using different tools. The epoxy/TA@MXene-SiO 2 coating had excellent anticorrosive performance and an impedance modulus of 2.826 × 10 6 Ω cm 2 at 0.01 Hz. The impedance modulus reached the maximum peak value of 8.585 × 10 6 Ω cm 2 after 132 h of continuous immersion. In addition, the TA made a coating with an electrochemical self-healing efficiency of 114.27 kΩ cm 2 h −1 . This work provides insight into the novel design of anticorrosive coatings with excellent anticorrosive performance and high self-healing efficiency.
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 48
·18133-18142
·
IF 8.307
Fushuo Wu,Zhihua Tian,Peiying Hu,Jingwen Tang,Xueqin Xu,Long Pan,Jian Liu,Peigen Zhang,ZhengMing Sun
Lightweight and flexible multifunctional materials with excellent electromagnetic interference (EMI) shielding and Joule heating performances are highly demanded for smart and wearable electronics. In this work, polyacrylonitrile (PAN) nanofiber films are prepared by electrospinning and then coated with polypyrrole (PPy) via vapor deposition, yielding a continuous three-dimensional (3D) conductive network of PAN@PPy. Ti3C2Tx MXene nanosheets with high electrical conductivity are sprayed on the PAN@PPy film to enhance its EMI shielding performance. The as-prepared PAN@PPy/MXene films (55 μm thick) exhibit a high EMI shielding effectiveness (SE) of 32 dB, achieving an extraordinarily high normalized surface-specific SE (SSE/t) of up to 17 534.5 dB cm2 g−1 from 8.2 to 12.4 GHz; simultaneously, the temperatures of PAN@PPy/MXene films can be driven up to 170.5 °C at an input voltage of 4 V, and exhibit fast-response, stable, and long-term Joule heating performance. The high SSE/t and efficient Joule heating ability of the films bode potential applications in smart and wearable devices.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Suzhou Xu,Can Liu,Xuping Jiang,Xinyu Wang,Shijin Zhang,Yanting Zhang,Qingguo Wang,Weiling Xiong,Jing Zhang
The performance and mechanisms of a titanium carbide (Ti 3 C 2 ) MXene modified Fe 3+ /hydrogen peroxide (H 2 O 2 ) system were compared in detail under dark and visible light conditions, with a new mechanism proposed for the reaction and reduction of MXene by Fe 3+ . Using Bisphenol A (BPA) as the target pollutant, the degradation of BPA by the Fe 3+ /H 2 O 2 system was improved after adding MXene in the dark, and the degradation rate of BPA was ≥ 95 % within 12.5 min under visible light, six times higher than that in the dark. Fe 2+ was ascertained to be the effective component responsible for H 2 O 2 activation to produce ·OH. SEM , XPS, ICP, XRD, and FTIR spectroscopy , analyses show that MXene and Fe 3+ form a complex, and then MXene reacts with Fe 3+ by breaking the Ti–C bonding to accelerate the Fe 3+ /Fe 2+ cycle. MXene uses photogenerated electrons to promote this reaction under visible light. In addition, quenching experiments and electron spin resonance spectroscopy results show that ·OH and O 2 •− are the main reactive oxygen species under visible light, while ·OH is the main active species in the dark. MXene thus effectively uses O 2 to form O 2 •− under visible light and promotes the Fe 3+ /Fe 2+ cycle. This study provides a theoretical basis for the combination of visible light catalysis and the advanced oxidation process of a Ti 3 C 2 MXene.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Roham Ghanbari,Ehsan Nazarzadeh Zare,Ana Cláudia Paiva-Santos,Navid Rabiee
Nowadays, the evolution of two-dimensional materials like transition metal carbides (MXene) prepares a novel path to surpass the “trade-off” between the membrane permeation and rejection rates. Based on water swelling and oxidation vulnerability, MXene membranes showed vivid defects such as inadequate stability, detrimental adsorption, and haphazardly stacked nanosheets. Here, we prepared Ti 3 C 2 Tx MXene@metal–organic frameworks nanosheets from aminated metal-organic framework-101 (NH 2 -MIL-101(Al)) via the in-situ growth method and incorporated them into the thin-film polymer to acquire desirable MXene nanosheets with tailor-made structures. The earned modified thin-film nanocomposite membrane showed high salt rejection for Na 2 SO 4 (98.6 ± 0.5%), MgSO 4 (96.9 ± 0.7%), MgCl 2 (84.5 ± 0.8%), and NaCl (82.5 ± 0.8%), and also showed an improved permeation rate by three times (17.1 ± 0.2 L m −2 . h −1 . bar −1 ). Concurrently, the rejection rate of five different types of heavy metal ions (Ni 2+ , Cd 2+ , Mn 2+ , Cu 2+ , and Zn 2+ ) was tested and denoted more than a 95.2 ± 0.5% rejection rate for all of them, notably high for Mn 2+ (97.6 ± 0.4%). After modification, the flux recovery rate was as high as 95.3 ± 0.4%, denoting more than 30% improvement; besides, anti-compactness features enhanced by nearly 34 ± 0.7%. The long-term water permeation kept 91.5 ± 0.9% of its initial rate indicating almost 40 ± 0.8% enhancement. In addition, the rejection performance of Na 2 SO 4 for the optimized membrane was more than 97% even after two weeks.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2022
·
IF 18.027
Dekui Song,Guo Ye,Yan Zhao,Yan Zhang,Xincun Hou,Nan Liu
Muscle fatigue is a common symptom experienced by many people and associated with less maximal force production of fatigued muscle. It is highly desirable to simultaneously and imperceivably diagnose muscle fatigue and restore muscle function using one skin electrode, yet no such electrode has been developed so far. Herein, we report an all-in-one, bioderived, air-permeable, and sweat-stable MXene electrode that can concurrently and comfortably record electromyographic (EMG) signals and achieve electrostimulation and electrothermal therapy for muscle theranostics. Leveraging the structural arrangement of perennial herbs and ion cross-linking of MXene in sweat, MXene-based electrodes (MBE) exhibit high breathability, are ultralightweight (∼0.25 mg/cm3), and have low and stable electrode–skin interfacial impedance at a variety of environments, facilitating the long-term reliable monitoring of electrophysiology. Taken together with electrostimulation and electrothermal therapy at the skin surface, MBE can diagnose muscle fatigue and restore muscle function by stimulating blood circulation. In addition, it can also be used for muscle rehabilitation training and prosthesis control via human–computer interaction. Our all-in-one, bioderived, air-permeable, and sweat-stable MXene electrode has a great potential for daily wearable healthcare of muscle fatigue.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 44
·23531-23541
·
IF 14.511
Fei Yu,Zhengqu Yang,Xiaochen Zhang,Peiyu Yang,Liqing Li,Jie Ma
MXenes have promising applications in capacitive deionization (CDI) due to their excellent electrical conductivity, tunable layer structure and hydrophilic surface. However, the electrochemical performance and water stability of MXenes would be limited by the large number of terminations on their surface. In this work, we obtained VS2/V2CTx nanocomposites by in situ partial derivatization of MXene to enhance electrochemical performance and slow down its own oxidation, and the resulting material was used as a cathode for CDI desalination. The TOPSIS-Entropy weight model was first used to achieve multi-objective optimization, realizing a salt adsorption capacity of 166.83 mg g−1, a salt removal rate of 3.67 mg g−1 min−1 and an energy consumption of only 0.256 kW h kg−1-NaCl. It also showed good stability over 60 CDI cycles. The fast salt removal rate and high desalination capacity of VS2/V2CTx can be explained by the synergy between the pseudocapacitive and battery behaviors of the VS2/V2CTx hybrid material. In situ electrochemical analysis based on electrochemical quartz crystal microbalance (EQCM) demonstrated that the desalination process is reversible and that the deionization mechanism is a combination of faradaic reaction (removal of Na+·4H2O) and intercalation pseudocapacitance (removal of desolvated Na+). This work shows that VS2/V2CTx, as a partially derived MXene material, provides a new solution to improve the stability and electrochemical properties of MXenes.
✓ 已验证
产品关联
DOI
高影响因子
ENERGY
·
2022
·
IF 8.857
Bingqing Quan,Jinzhi Wang,Yi Li,Miao Sui,Heng Xie,Zhigang Liu,Hao Wu,Xiang Lu,Yi Tong
Phase change materials (PCMs) have emerged as the most efficient thermal energy storage solutions due to their unique energy storage properties, but they inevitably have shortcomings such as easy leakage and single thermal energy conversion method. In order to solve these problems and expand the application scope of PCMs in the field of thermal energy storage, using cellulose nanofibers , MXene , PEG, and Fe 3 O 4 as raw materials, combined with simple freeze-drying and vacuum impregnation techniques, a series of phase change composites (PCCs) with excellent solar/magnetothermal conversion properties were prepared. The solar-to-thermal conversion efficiencies of PCCs exceed 97.16%, and the lowest enthalpy value can still reach 151 J/g. When the content of Fe 3 O 4 is 15%, the PCC exhibits good magnetothermal conversion ability, which can perform magnetothermal fast charging, and the PCC can rise from 17 °C to 85 °C in 130 s. Moreover, the PCCs have excellent thermal stability, which can remain stable below 350 °C, and the enthalpies value of the PCCs hardly decrease after 1000 cycles, showing great practical application value.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）