Corrosion Communications
·
2025
·
IF 9.5
Yangmin Wu,Changchun Zhao,Wenjie Zhao
It is challenging for organic coatings with solely physical barrier property to achieve long-term corrosion protection on metal equipment, especially in harsh deep sea environments. Here, we utilized DL-phenylalanine to modify Ti 3 C 2 T x nanosheets via noncovalent interaction to obtain DL@Ti 3 C 2 T x hybrid additives, which significantly improved the corrosion protection ability of epoxy coating (EP). The impedance modulus of DL@Ti 3 C 2 T x /EP composite coating with a thickness of 50 μm was two orders of magnitude higher than that of pure EP after 240 h immersion under 30 MPa hydrostatic pressure. The adhesion strength of DL@Ti 3 C 2 T x /EP composite coating remained at a favorable value of 1.84 MPa after long-term immersion in a harsh environment, which was twice as high as that of pure EP coating. In addition, the active corrosion resistance property of DL@Ti 3 C 2 T x /EP coating was investigated via the local electrochemical impedance spectroscopy (LEIS) measurement. The improved protection ability of DL@Ti 3 C 2 T x /EP was benefited from the synergistic effects of the superior physical barrier property of Ti 3 C 2 T x nanosheets and the self-healing feature provided by DL molecules. The corrosion protection and failure mechanisms of composite coating were discussed in detail, supplying broader platforms for constructing active/passive integrated anti-corrosion coatings in harsh deep sea environments.
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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.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yu Zhu,Liwei Lin,Man Zhou,Han Li,Yanan Wang,Song Xu,Zhongyu Li
The conversion of greenhouse gas CO 2 into usable high-value-added fuels through photocatalytic reactions is a promising green energy measure. However, the photocatalytic CO 2 reduction reaction faces challenges such as multi-electron transfer and slow mass transfer. Furthermore, most photocatalysts can only absorb ultraviolet light and have insufficient active sites, resulting in a low utilization rate of sunlight. Based on this, we designed a novel layered composite catalyst, where Ti 3 C 2 T x MXene serves as the supporting framework and BiOCl nanosheets are uniformly grown on its surface. Under simulated sunlight, the CH 4 yield is 30.07 μmol·g −1 ·h −1 , with a selectivity of 93.4 %, and it still maintains excellent stability after six photocatalytic cycle experiments. Research data indicates that with the intervention of reducing ethylene glycol, the oxygen vacancy content on Ti 3 C 2 T x /BiOCl is significantly increased. The formation of oxygen vacancies and Schottky heterojunctions not only enhances the charge separation efficiency at the interface but also selectively reduces CO 2 to CH 4 .
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Changxin Yuan,Jinlong Li,Yan Zhuang,Dongxuan Guo,Shuang Meng,Dantong Zhang,Xue Yang,Guozhe Sui
Photocatalytic hydrogen evolution represents a crucial pathway for sustainable energy conversion, where constructing efficient heterojunctions and employing strategic doping are key to enhancing performance. Herein, a Ni-doped CdZnS/Ti 3 C 2 T x Schottky heterojunction was constructed via a hydrothermal method to enhance photocatalytic hydrogen evolution. Ni doping introduces sulfur vacancies that improve charge conductivity, while coupling with Ti 3 C 2 T x MXene forms a Schottky junction that directs interfacial electron transfer and suppresses recombination. Density functional theory (DFT) calculations confirm that sulfur vacancies and the Schottky barrier act synergistically to optimize charge dynamics, and that Ti 3 C 2 T x shifts the d-band center of Ni toward the Fermi level of the sample, promoting hydrogen desorption process. The optimized Ni-CdZnS/Ti 3 C 2 T x composite exhibits a high visible-light driven hydrogen evolution rate of 13.67 mmol g −1 h −1 — 3.73-folds that of pristine CdZnS — along with an apparent quantum efficiency (AQY) of 20.15% at 365 nm, while maintaining favorable stability. This work demonstrates an effective strategy integrating defect engineering and Schottky junction design for efficient solar hydrogen evolution.
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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.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Cuizhen Yang,Tianyi Wang,Hao Yuan,Chenghao Yao,Wei Su,Guoqiang Liu,Haiyan He,Dongming Liu,Huajie Huang
A facile, scalable wet-chemical strategy is developed for in-situ Pd nanoclusters anchored on ionic liquid (IL)-modified Ti 3 C 2 T x nanosheets. • IL modification tunes Ti 3 C 2 T x surface charge, improves its stability and antioxidant capacity, and strengthens electrostatic interaction with Pd precursors to form active grain boundaries. • Pd/IL-Ti 3 C 2 T x shows superior FAOR & MOR electrocatalytic performance: high activity, good CO-poisoning resistance and favorable long-term stability. • Theoretical simulations confirm IL - Ti 3 C 2 T x modulates Pd electronic structure, weakens CO adsorption, and enables the enhanced electrocatalytic activity. Both direct formic acid fuel cell (DFAFC) and direct methanol fuel cell (DMFC) with high energy-conversion efficiency have garnered considerable attention against the backdrop of continuously increasing energy demand, while the actual performance largely depends on the catalytic properties of their anode catalysts. In this work, we present a facile and scalable wet-chemical strategy for synthesizing palladium (Pd) nanoclusters in situ anchored on ionic liquid (IL)-modified two-dimensional Ti 3 C 2 T x MXene nanosheets, which are capable to serve as highly efficient anode catalysts for both formic acid and methanol electrooxidation. The incorporation of IL not only effectively tune the surface charge characteristics of Ti 3 C 2 T x nanosheets to enhance their structural stability and antioxidant capacity, but also strengthens the electrostatic interactions between Pd species and substrate to induce the formation of catalytically active grain boundary sites. As a result, the as-obtained Pd/IL-Ti 3 C 2 T x nanostructure exhibits excellent electrocatalytic performance for both formic acid and methanol oxidation, including large electrochemically active surface areas, high mass/specific activities, strong CO resistance, and dependable long-term stability, which far outperform that of conventional Pd catalysts supported on carbon black, carbon nanotubes, reduced graphene oxide, and pristine Ti 3 C 2 T x substrates. Theoretical simulations further confirm that the stable configuration and optimized electronic structure of Pd nanoclusters on Ti 3 C 2 T ₓ weaken their CO adsorption ability relative to Pd nanoparticles; this provides the foundation for their dramatically enhanced and sustainable electrocatalytic performance. A facile and scalable wet-chemical strategy is developed to synthesize Pd nanoclusters in situ anchored on ionic liquid (IL)-modified Ti 3 C 2 T ₓ nanosheets. The IL modification enhances the structural stability and antioxidant capacity of the Ti 3 C 2 T ₓ support while promoting the formation of catalytically active grain boundary sites via strengthened electrostatic interactions. The resulting Pd/IL-Ti 3 C 2 T ₓ hybrid exhibits outstanding electrocatalytic performance for both formic acid and methanol oxidation, including high mass/specific activities, superior CO tolerance, and excellent long-term stability. Theoretical simulations reveal that the optimized electronic structure of Pd nanoclusters weakens CO adsorption, underpinning the enhanced and sustainable performance. Download: Download high-res image (133KB) Download: Download full-size image
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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.
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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.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Ya Xiao,Chengzheng Men,Bingxian Chu,Zuzeng Qin,Hongbing Ji,Jianhua Chen,Tongming Su
Graphitic carbon nitride (g-C 3 N 4 ) is regarded as a promising photocatalyst for photocatalytic CO 2 reduction into valuable solar fuels. In this work, Cu-Ti 3 C 2 T x was used as efficient cocatalysts to enhance the photocatalytic performance of g-C 3 N 4 . The tight interface between Cu-Ti 3 C 2 T x and g-C 3 N 4 significantly promote the separation of photogenerated electrons and holes. In addition, the Cu and the Ti 3 C 2 T x can act as the fast transport channels for the photogenerated electrons, and the interface between the Cu and Ti 3 C 2 T x can act as the active sites for the adsorption and activation of CO 2 . The optimized Cu-Ti 3 C 2 T x /g-C 3 N 4 exhibited the highest photocatalytic CO 2 reduction performance with the yield of CO and CH 4 reached 49.02 and 3.6 μmol·g −1 , respectively, which was 9.0 and 9.2 times than that of pristine g-C 3 N 4 . Moreover, the optimized Cu-Ti 3 C 2 T x /g-C 3 N 4 photocatalyst maintained satisfactory stability. This work will offer new insight into modulating g-C 3 N 4 with an MXene-metal-based cocatalyst for photocatalytic CO 2 reduction.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Chao Xie,Weikai. Kong,Zijian Wu,Dandan Yang,Yahui Li,Yulian Li,Jiandong Lu,Junyong He,Peidong Hong,Lingtao Kong
The filtration-assembled catalytic composite membrane enable high-density catalyst loading with improved exposure of active sites. Given the cost efficiency of iron-based catalysts, inhere, a high-density Fe 3 O 4 /Ti 3 C 2 T x @PVDF catalytic composite membrane was successfully fabricated via filtration-assembled anchoring Fe 3 O 4 nanoparticles to the superior surface of Ti 3 C 2 T x . The structural and functional properties of the composite membrane were systematically elucidated through comprehensive characterization. Leveraging the outstanding catalytic performance of Fe 3 O 4 /Ti 3 C 2 T x , efficient degradation of acetaminophen (ACT) was achieved. In the ∙OH dominated M-5 + PMS system, 93.2% ACT removal was attained within 60 min. The degradation pathways and underlying mechanisms were thoroughly investigated. Furthermore, a novel MBR + CMR system was developed for advanced treatment of pharmaceutical wastewater, significantly enhancing the removal of pollutants from secondary effluent. The hybrid system exhibited remarkable treatment efficiencies, with 91.7% TOC removal and 99.7% NH 4 + -N removal. Finally, future perspectives on scalable membrane fabrication, potential application domains, and technology integration are discussed.
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ACS Sensors
·
2026
·
IF 10.9
Peng Xu,Yanlei Guo,Xin Lv,Shuting Wei,Dan Yang,Renquan Guan,Yuxin Wang,Yingmin Teng,Aiceng Li,Huaqiao Tan,Zhongling Lang,Zheng Lou,Lili Wang,Zhao Zhao
The necessity for high-efficiency, low-power room-temperature (RT) ammonia (NH3) sensors is particularly acute in environmental monitoring, industrial safety, and medical diagnostics. However, conventional chemiresistive sensors frequently require elevated temperatures to initiate reactions, leading to high energy consumption and potential safety risks. Inspired by plant photosynthesis, this paper successfully designs a ternary S-scheme heterojunction for a photo-activated RT NH3 sensor. The design effectively mimics the efficient charge transfer process in photosynthesis, thereby significantly promoting the separation and migration of photogenerated carriers and enhancing the sensing performance. Experimental results demonstrate exceptional performance under illumination: a high response value of 1679% (representing a 20-fold improvement over the dark state), rapid response and recovery times of 2.1 s and 1.9 s, respectively, along with outstanding selectivity, excellent stability, and a detection limit as low as 17 ppb. This work demonstrates a novel, efficient RT photo-activated NH3 sensor and provides innovative insights into designing biomimetic, smart gas-sensing materials and devices.
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PubMed
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.
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