Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 2
·1-16
·
IF 23.2
Zhao Yao,Miao Baoji,Nawaz Muhammad Asif,Zhu Qingsong,Chen Qiuling,Reina Tomas Ramirez,Bai Jinbo,He Delong,Al-Tahan Mohammed A.,Arsalan Muhammad
With the widespread application of communication equipment with electromagnetic signal transmission to cause electromagnetic radiation pollution, there is an urgent need for high-performance electromagnetic shielding materials. Here, an ultrathin, flexible, alternating multilayered, and conductive gradient-structured cellulose nanofiber–MXene/silver nanowire (CNF-MXene/AgNW) nanocomposite paper with high mechanical strength, strong electromagnetic interference (EMI) shielding, and outstanding thermal management was constructed via the alternating vacuum filtration (AVF) process. The extensive hydrogen bonding interactions between MXene, CNF, and AgNW enhance the interfacial adhesion and conductive synergy between layers, resulting in excellent tensile strength of 194.3 MPa and fracture strain of 7.62% of nanocomposite paper. The alternating conductive gradient structure of the nanocomposite paper greatly increases the interlayer multiple reflections and absorption of electromagnetic waves, resulting in a high conductivity of 3237.35 S cm −1 and excellent electromagnetic shielding efficiency of 65.4 dB for the nanocomposite paper. Under an external low voltage of 3 V, the surface temperature of the nanocomposite paper reaches 107.2 ℃ within 10 s and can be stable for a long time. These results indicate that CNF-MXene/AgNW nanocomposite paper with a conductive gradient structure has potential applications in the fields of aerospace, communication engineering, and wearable devices.
✓ 已验证
DOI
高影响因子
Analytical Methods
·
2025
·
IF 2.6
Jinping Tang,Yuhai Wang,Chunxu Wang,Ziwei Yu,Jin Wang
Surface-enhanced Raman scattering (SERS) has emerged as a powerful analytical tool for trace molecular detection, enabling identification of target analytes through their characteristic vibrational fingerprints. Its high sensitivity, selectivity, and non-destructive detection capabilities make it extremely valuable in fields such as biological detection, food safety, and environmental detection. Currently, metal carbonitride (MXene) as an emerging two-dimensional material has become a hot topic in the field of SERS. In this work, by combining the advantages of bimetallic nanoparticles and MXene nanosheets, Ni/Ag nanoparticles with different proportions were modified on monolayer MXene nanosheets through chemical reduction and transmetallation reactions for the rapid detection of thiram. The evaluation of the SERS performance of the MXene–Ni/Ag composite substrate for the Raman reporter molecule mercaptobenzoic acid (MBA) demonstrates a high SERS performance factor (SPF) of 8.2 × 106, and a low detection limit of 10−10 M. Also, for the detection of the pesticide thiram, the substrate exhibits high sensitivity and reliable quantitative analysis capabilities, retaining detectable spectral features even at concentrations down to 10−9 M. Meanwhile, the substrate also exhibits a low relative standard deviation (RSD) value in reproducibility and maintains good stability over a certain period. Ni/Ag bimetallic nanoparticles provide high SERS activity, while MXene nanosheets effectively concentrate target molecules through their strong adsorption capacity. These results indicate that MXene–Ni/Ag composite substrates can serve as a highly effective SERS platform for sensitive and reliable environmental monitoring.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qiang Li,Tianhui Zhao,Junjie Zhu,Muyuan Ma,Guoqing Hou,Mengyuan Fang,Yu Shen,Xiaoli Zhao,Zhi Tang,Fengchang Wu
Acetaminophen (ACTP) is a widely used antipyretic and analgesic, especially after the COVID-19 pandemic, during which its extensive use led to widespread distribution in the environment. Conventional wastewater treatment methods struggle to fully degrade ACTP, posing potential risks to human health and ecosystems. Therefore, developing efficient, safe, environmentally friendly, and cost-effective techniques for ACTP degradation is imperative. Herein, ultrathin-single Ti 3 C 2 T X MXene (USM) and multilayered Ti 3 C 2 T X MXene (MLM) with nanometer thickness and micron transverse size were synthesized from the MAX via acid/salt (HCl + LiF) etching process. Time-resolved photoluminescence indicated that the average fluorescence lifetimes (τ ave ) of USM (96.870 ns) and MLM (53.839 ns) are 9.47 and 5.26 times that of MAX (10.229 ns), respectively. Both materials exhibited excellent ACTP degradation ability (∼100 %) in a photocatalytic Fenton-like reaction process under visible light within 60 min. The visible light enhanced the degradation of ACTP by accelerating the redox cycles of Ti 3+ /Ti 4+ and achieving continuous catalytic activation of H 2 O 2 to form reactive oxygen species (h + , •OH, •O 2 – , and 1 O 2 ). Among these, h + radicals were the primary contributors, with •OH, •O 2 – , and 1 O 2 also playing supportive roles in the degradation process. The ecological structure–activity relationships analysis indicated that the degradation intermediates had significantly lower toxicity than ACTP itself. This study offers valuable insights into MXene’s application in photocatalytic Fenton-like systems, paving the way for efficient pharmaceutical degradation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Ziheng Ye,Feihua Liu,Xiaoai Ye,Kaizheng Gao,Jingjing Luo,Xiangli Liu,Weiwei Zhao
Ti 3 C 2 T x MXene with outstanding physicochemical properties have shown huge potential in electromagnetic interference (EMI) shielding applications. However, the poor chemical stability and mechanical fragility have seriously hindered their practical use. Herein, we developed a novel pyrimidine-containing polyimide (PPI) and constructed Ti 3 C 2 T x /PPI (MP) composite films . The incorporation of PPI not only suppresses the oxidation of Ti 3 C 2 T x by forming Ti-N x interactions between the nitrogen-rich pyrimidine rings of PPI and the Ti centers of Ti 3 C 2 T x , but also enhances mechanical strength and durability of the composite film across a wide temperature range (-196–250 ℃). Compared with Ti 3 C 2 T x film, the MP film exhibits significantly improved oxidation resistance , which the EMI SE of MP film did not decrease after 14 days in 80 ℃/80 RH environment when the weight ratio of Ti 3 C 2 T x and PPI reaches 11:4. Merely 1.4 dB decrease in EMI SE of the MP film was revealed after 200,000 bending cycles with a radius of 2 mm, and the EMI SE remained virtually unchanged after bending in liquid N 2 . Moreover, the composite film demonstrates excellent thermal management properties, including rapid thermal response, efficient electrothermal conversion, excellent durability and stability. The combination of desirable EMI shielding ability, ultrahigh flexibility, superior stability and durability, as well as ideal thermal management performance gives this material excellent potential for various applications.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Chunyan Zhang,Yu Liu,Yi Zhao,Yining Qu,Li Wang,Han Zhang,Daomei Chen,Jiaqiang Wang
Most photocatalysts reported to date require sacrificial agents to achieve high-efficiency photocatalytic production of H 2 O 2 . Developing photocatalysts for H 2 O 2 production without sacrificial agents remains a significant challenge. In this study, we proposed an interfacial Schottky junction consisting of InP quantum dots (QDs) and Ti 3 C 2 T x nanosheets for photocatalytic production of H 2 O 2 without relying on any sacrificial agents. The InP/Ti 3 C 2 T x photocatalyst demonstrated high efficiency in generating H 2 O 2 , even when tested in wastewater and tap water. The photocatalytic rate of 5InP/Ti 3 C 2 T x reached 21.31 mmol g⁻¹ h⁻¹, which is 112 times greater than InP QDs. The 5InP/Ti 3 C 2 T x catalyst achieved a degradation performance of 99.9% for acid orange 7. The photocatalytic production of H 2 O 2 was effectively utilized in actual wastewater to decrease chemical oxygen demand (COD) levels. The COD concentration was decreased to 67 mg L −1 , well below the permissible threshold set by China's Ministry of Ecology and Environment for coking chemical industry emissions. As far as we know, no prior study has documented the application of InP in the photocatalytic production of H 2 O 2 within actual wastewater. This research explores the applications and impacts of InP compounds in the field of photocatalysis. This work introduces a novel approach for sacrificial agent-free photocatalytic H 2 O 2 production, offering a significant advancement in the field.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 15
·2261
·
IF 5.3
Zelin Li,Yang Zhao,Qinglin Deng,Xuhui Zhu,Yipeng Tan,Ziwen Feng,Hao Ji,Shan Zhang,Lingmin Yao
Using natural light energy to convert water into hydrogen is of great significance to solving energy shortages and environmental pollution. Due to the rapid recombination of photogenerated carriers after separation, the efficiency of photocatalytic hydrogen production using photocatalysts is usually very low. Here, efficient CdZnS nanoparticles@Ti3C2TxMXene nanosheet heterojunction photocatalysts have been successfully prepared by a facile in situ growth strategy. Since the CdZnS nanoparticles uniformly covered the Ti3C2TxMxene nanosheets, the agglomeration phenomenon of CdZnS nanoparticles could be effectively inhibited, accompanied by increased Schottky barrier sites and an enhanced migration rate of photogenerated carriers. The utilization efficiency of light energy can be improved by inhibiting the recombination of photogenerated electron-hole pairs. As a result, under the visible-light-driven photocatalytic experiments, this composite achieved a high hydrogen evolution rate of 47.1 mmol h−1g−1, which is much higher than pristine CdZnS and Mxene. The boosted photocatalytic performances can be attributed to the formed heterojunction of CdZnS nanoparticles and Ti3C2TxMXene nanosheets, as well as the weakened agglomeration effects.
✓ 已验证
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2026
·
IF 10.7
Chong Li,Chunjie Wu,Yufei Xiao,Siqi Zhu,Yuhan Li,Kunyi Tong,Chenhao Zhang,Hui Li
Two-dimensional MXene nanosheets have attracted extensive attention due to their exceptional physicochemical properties. However, the conventional synthesis of MXenes relies heavily on hazardous fluoride-based etchants, causing severe environmental and safety risks. Herein, we report a clean, fluorine-free, and sustainable strategy for synthesizing oxygen-terminated Ti 3 C 2 T x MXene (Ff-Ti 3 C 2 T x ) via a novel chelation-assisted alkaline etching approach. By synergistically combining tetramethylammonium hydroxide with ethylenediaminetetraacetic acid, we successfully overcome the intrinsic aluminum-passivation bottleneck that severely restricts the etching efficiency of conventional pure alkaline systems. This dual-agent chelation system not only enables the controlled and efficient delamination of Ti 3 AlC 2 into monolayer Ti 3 C 2 T x nanosheets under extremely mild conditions but also delivers a record-high yield of 40%, representing a 60% improvement over existing fluorine-free methods. The resulting Ff-Ti 3 C 2 T x exhibits a highly hydrophilic, oxygen-rich surface (–OH, –O), which inherently enhances its electrochemical activity and light-harvesting performance. As an environmental sensor, it achieves ultrasensitive detection of p -nitrophenol with a low detection limit of 0.055 μM and a high sensitivity of 3.16 μA μM −1 cm −2 . Moreover, Ff-Ti 3 C 2 T x demonstrates exceptional near-infrared photothermal performance, with a mass extinction coefficient of 21.8 L g −1 cm −1 at 808 nm and a photothermal conversion efficiency of 42.1%. This work provides a scalable, environmentally benign, and high-yielding pathway for fluorine-free production of MXene and establishes Ff-Ti 3 C 2 T x as a versatile platform for next-generation environmental monitoring and sustainable energy applications.
✓ 已验证
DOI
高影响因子
RSC Advances
·
2026
·Vol. 16
·期 13
·12165-12179
·
IF 6.1
Waqas Saeed,Ye Tian,Irshad Ahmad Mir,Baoji Miao,Amna Manzoor,Surjyakanta Rana,Xing Chen
Ammonia (NH3) detection at room temperature under varying humidity conditions is crucial for environmental monitoring, industrial safety, and healthcare. However, ammonia detection remains a challenge due to the lack of sensitivity and selectivity of current room temperature based sensors. In this context, Ti3C2Tx MXene and flower-like SnS2 composites were investigated for NH3 sensing. A comparative analysis of multilayered and few-layered nanohybrid composites demonstrated that the few-layered configuration displayed a markedly enhanced response to ammonia. Its larger surface area, higher electrical conductivity, and higher number of active sites contribute to its superior gas diffusion and charge transfer properties. The composite was further functionalized with Nafion (NF) to enhance sensitivity and selectivity under humid conditions. In an optimized NF-functionalized few-layered Ti3C2Tx/SnS2 sensor, we achieved a 12.11 response ratio towards 100 ppm NH3, with a response time of 42 s and a recovery time of 156 s, as well as excellent selectivity towards interfering gases. Reliability tests conducted in humid environments confirmed the excellent operational stability and durability of the proposed sensor. These experimental results demonstrate that the developed few-layered Ti3C2Tx/SnS2/NF nanohybrid composite provides a highly durable, sensitive, and selective platform for NH3 detection in practical applications at room temperature.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Meiling Lian,Haoquan Wang,Liuxing Chen,Da Chen,Qi Yang,Xuezhi Qiao
Electrochemical sensing devices often suffer from biofouling due to nonspecific adsorption of biomolecules and microorganisms in complex biological matrices. To address this challenge, we developed an efficient antifouling and self-sterilizing sensing interface by grafting polyethylene glycol (PEG) onto two-dimensional Ti 3 C 2 T x MXene nanosheets for the accurate detection of cardiac troponin I (cTnI), a gold-standard biomarker for acute myocardial infarction (AMI). The Mn 2+ -intercalated Ti 3 C 2 T x (Mn-Ti 3 C 2 T x ) exhibited enhanced electrochemical activity in a three-electron oxygen reduction reaction (3e - ORR), enabling in situ self-sterilization by activating molecular oxygen to generate hydroxyl radicals (•OH), which demonstrated potent antibacterial effects against both Gram-negative and Gram-positive bacteria. Density functional theory calculations revealed that Mn doping in MXene significantly reduced the free energy barrier of *OOH intermediate, promoting H 2 O 2 formation and subsequent reduction to •OH. The PEGylated Mn-Ti 3 C 2 (PEG@Mn-Ti 3 C 2 T x ) composite combined the superior hydrophilicity of PEG for effective protein repulsion with the enhanced conductivity of Mn-Ti 3 C 2 T x , enabling sensitive biosensing. Critically, the fabricated biosensor demonstrated high specificity for cTnI against common interferents and achieved reliable detection in spiked serum samples. It exhibited a broad detection range from 0.1 pg mL -1 to 500 ng mL -1 with an ultralow limit of 0.03 pg mL -1 . This work presents a novel strategy for combating biofouling and paves the way for designing robust biosensors capable of accurate and long-term operation in clinically relevant environments, holding great promise for point-of-care diagnostics.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Yuanhao Dong,Jianhong Liu,Yuan Chen,Tao Zhu,Yuanhong Li,Chaoliang Zhang,Xin Zeng,Qianming Chen,Qiang Peng
Methicillin-resistant Staphylococcus aureus (MRSA) has strong resistance to antibiotic therapy. In this regard, developing antibiotic-free antibacterial agents is of great significance to treat MRSA infections. Herein, we loaded Ti 3 C 2 T x MXene nanomaterial in the non-crosslinked chitosan (CS) hydrogel. The obtained MX-CS hydrogel is expected to not only adsorb MRSA cells via CS-MRSA interactions, but also gather the MXene-induced photothermal hyperthermia, achieving the efficient and intensive anti-MRSA photothermal therapy. As a result, under NIR irradiation (808 nm, 1.6 W/cm 2 , 5 min), MX-CS showed a greater photothermal effect than MXene alone did (30 μg/mL, 49.9 °C for MX-CS and 46.5 °C for MXene). Importantly, MRSA cells were rapidly adsorbed on MX-CS hydrogel (containing 30 μg/mL MXene) and completely inhibited (99.18 %) under NIR irradiation for 5 min. In contrast, MXene (30 μg/mL) and CS hydrogel alone only inhibited 64.52 % and 23.72 % MRSA, respectively, significantly lower than the inhibition caused by MX-CS ( P < 0.001). Interestingly, when the hyperthermia was depleted by a 37 °C water bath, the bacterial inhibition rate of MX-CS significantly decreased to 24.65 %. In conclusion, MX-CS hydrogel has a remarkable synergistic anti-MRSA activity by gathering MRSA cells and MXene-induced hyperthermia, and may have great potentials in treating MRSA-infected diseases.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Zhihui Hu,Huanmin Liu,Ningxin Kang,Kangle Lv,Qin Li
Using solvothermal methods to in situ oxidize two-dimensional titanium carbide (Ti 3 C 2 T x ) MXene into TiO 2 nanocrystals offered an effective strategy to construct highly efficient TiO 2 /Ti 3 C 2 T x heterojunctions for photocatalytic applications. Nevertheless, the effect of the chosen solvent on the Ti 3 C 2 T x oxidation and the product's performance was often neglected. Herein, isopropanol (ISO), ethanol (EtOH), ethylene glycol (EG), dimethyl sulphoxide (DMSO) and deionized water (Water) were taken as the representative solvents to prepare TiO 2 /Ti 3 C 2 T x composites by one-step solvothermal method for photocatalytic NO emission. It was the large polarity, dielectric constant and surface tension of the solvents that offered Ti 3 C 2 T x with good dispersibility and high oxidation degree during the solvothermal process. More importantly, the solvothermal treatment of Ti 3 C 2 T x in DMSO could promote the formation of TiO 2 nanoparticles with obviously higher crystallinity and more surface oxygen vacancies than those in EG, EtOH and ISO. Therefore, the photocatalytic NO oxidation efficiency of the samples within 30-min irradiation showed a descending order of TT-DMSO (46.9%), TT-Water (42.2%), TT-EG (32.3%), TT-EtOH (26.7%), and TT-ISO (19.9%). This work highlighted the significance of oxidation environment for Ti 3 C 2 T x , which could bring about some new but necessary consideration on the processing technique of MXene families for their future practical applications.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Guandan Lu,Xuteng Xing,Jia Zhang,Xiaoyang Xu,Xiangjing Zhang,Haining Liu,Jiye Fan,Bingzhu Zhang
The cobalt ion chelated Ti 3 C 2 T x MXene (Co@Ti 3 C 2 T x MXene) composite is designed/prepared by alkalizing quasi-monolayer Ti 3 C 2 T x MXene supernatant into -OH rich sample, followed by cobalt ion chelation, to achieve the high loading amount of Co element. The optimized Co@Ti 3 C 2 T x MXene can display the high specific capacity of 48 mAh/g at the current density of 1 A/g, much higher than Ti 3 C 2 T x MXene, which is attributed to the highly dispersed quasi-monolayer structure, additional Faradaic redox reaction of Co (Ⅱ/Ш), and enhanced conductivity from Co element. In terms of practical application, the assembled Co@Ti 3 C 2 T x MXene//active carbon (AC) asymmetric supercapacitor device also exhibits the high energy density of 19 Wh/kg, and good cycle stability. The alkali modification/metal ion chelation is a simple and effective strategy to inhibit the stack and enhance electrochemical performances for Ti 3 C 2 T x MXene.
✓ 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）