Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123534
·
IF 7.5
Fanshen Meng,Dongliang Zhang,Zihang Zhang,Yu Lin
Traditional oil absorption and oil-water separation methods have significant shortcomings such as low efficiency, high cost and environmentally unfriendly, developing efficient oil absorption and recyclable recovery materials has become more desirable for industrial applications. Herein, we fabricate the anisotropic polyimide (PI)/Ti 3 C 2 T x MXene composite aerogels with highly elastic mechanical performance and outstanding flame retardancy, thermal insulation and oil absorption properties via an unidirectional freeze drying method. The introduction of strong hydrogen bonding interactions between Ti 3 C 2 T x and PI matrix is beneficial to the structure integrity and mechanical properties of the composite aerogels. The samples show excellent mechanical properties along the axial direction and highly elastic properties along the radial direction. The compressive modulus and strength of the T 1 P 4 composite aerogel are 5.16 and 0.55 MPa, respectively, and only the minimal plastic deformation and low energy loss coefficient can be observed for the composite aerogel even after 500 compression cycles. Moreover, the PI/Ti 3 C 2 T x composite aerogels has low thermal conductivity, superior flame retardancy and thermal insulation, and excellent oil absorption properties. The surface temperature is 40.6 °C for the T 2 P 1 composite aerogel with 15 mm thickness after annealing on the hot stage at 180 °C for 5 min. The water contact angle of the T 1 P 4 composite aerogel is 123°, and the oil absorption capacity of lubricant oil is 1126%. Furthermore, the composite aerogel exhibits stable oil absorption capacity even after 50 cycles, which demonstrates great potential for practical applications in cyclic oil absorption.
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MICROCHEMICAL JOURNAL
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2026
·
IF 5.2
Yuanye Pan,Xinyu Li,Haiyan Liu,HanChi Shi,Jiayao Du,Yan Lv,Xinyue Wu,Jinghan Li,Shuangqing Fan,Minghui Cao,Siqi Li,Tong Liu
In-situ TiO 2 @Ti 3 C 2 T x /PANI composite for NH 3 sensing. • High response of 319% toward 50 ppm NH 3 achieved. • Detection range expanded to 0.3–1000 ppm. • Stable performance under 40–90% RH and mechanical bending. • Enables real-time NH 3 monitoring for fertilizer management. The utilization rate of nitrogen fertilizer and the determination of its effective period depend heavily on the dynamics of ammonia(NH 3 ) volatilization. Therefore, monitoring NH 3 emissions during fertilization is important for understanding nitrogen loss behavior in agricultural systems. However, developing sensors that maintain high response and stability in complex field environments remains a challenge. To address this, leveraging the high conductivity and abundant surface functional groups of Ti 3 C 2 T x to enhance gas adsorption and carrier transport, a flexible room-temperature NH 3 sensor based on TiO 2 @Ti 3 C 2 T x /PANI(TTP-20) composite was constructed. Attributed to the synergistic Schottky junction formed at the interface and the optimized mesoporous structure, the sensor exhibits a high response of 319% to 50 ppm NH 3 and lowest tested concentration of 0.3 ppm. Crucially, the sensor demonstrates good immunity to humidity interference (RH = 40–90%), ensuring robust reliability in moist soil environments. It successfully identified NH 3 release patterns under simulated fertilization conditions, providing a promising approach for tracking NH 3 emission trends under simulated fertilization conditions and supporting the comparative evaluation of fertilization strategies. Download: Download high-res image (365KB) Download: Download full-size image
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JOURNAL OF HAZARDOUS MATERIALS
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2026
·
IF 10.6
Liyuan Fu,Tianxin Zhou,Yuxuan Yang,Guohui Yin,Yang Tang,Ziheng Zhang,Tiezhu Sun,Dan Zhou
Ti 3 C 2 T x can be released into the groundwater environment due to its widespread application. It poses a severe environmental risk due to its cytotoxicity but has received little attention. In the groundwater, the dynamic groundwater flow and solution chemistry will affect the transport behavior of Ti 3 C 2 T x which is still unclear and necessary for the assessment of its environmental impact. Thus, this study investigated the influential mechanisms of groundwater flow and solution chemistry on the transport of Ti 3 C 2 T x by considering its 2D shape and degradation characteristics via column experiments with numerical models. The results showed that the transport of Ti 3 C 2 T x in the quartz sand column significantly increased with the decrease of ionic strength (IS) and increase of pH and sodium humate. Face-on oriented Ti 3 C 2 T x particles were reversibly attracted in the secondary minimum, whereas edge-on orientation favored the irreversible attachment in the primary minimum that was facilitated by the nanoscale charge heterogeneity. The retention of Ti 3 C 2 T x significantly increased during the FI period due to the enhanced residence time, facilitating edge-on attachment by diffusion and diffusion into stagnation zones. This study demonstrated the controlling roles of the shape and degradation characteristics of Ti 3 C 2 T x on its mobility, suggesting that such unique properties should be considered in assessing the environmental fate of emerging nanoparticles.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Zengkun You,Kai Ou,Tian Tang,Yajing Cui,Wenting Zhang,Yuxiang Ni,Yudong Xia,Hongyan Wang
Under the background of sustainable energy development, the development of efficient, stable and low-cost electrocatalysts to improve electrochemical performance has become a research hotspot in the field of energy conversion. In this work, upright, one-fold and oblique Ni nanorods were designed and grown on Ti 3 C 2 T x MXene nanosheets via glancing angle deposition technique of physical vapor deposition. For the hydrogen evolution reaction, the composite Ti 3 C 2 T x @upright exhibited a low overpotential of only 131 mV@10 mA/cm 2 , along with excellent 24 h stability in 1 M KOH. Its excellent performance is mainly attributed to the high porosity of the upright nanorods, the fast electron transport channels provided by Ti 3 C 2 T x MXene, and the stable interface structure. This research provides new ideas for constructing high-performance electrocatalytic catalysts and achieving efficient electrocatalytic conversion in sustainable energy systems.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Xinnan Wang,Tiantian Wang,Xiaozhi Zhang,Shujuan Liu,Qian Ye,Feng Zhou
MXenes possess low interlayer shear stress, high mechanical strength and tunable structure, making them highly effective in enhancing low-friction and wear-resistant properties in lubrication systems. However, their application as oil-based lubricant additive is limited by poor dispersion stability in base oils. In this work, a nanocomposite supramolecular oleogel with three-dimensional network structure was prepared by integrating functionalized MXene with urea-based gelator. The MXene nanosheets were modified by 3-(3,4-dihydroxyphenyl)-2-(3- octadecylureido) propanoic acid (DOPA) and then effectively encapsulated within the supramolecular gel network, significantly reducing agglomeration and ensuring stable dispersion in base oil PAO10 for over five months. The resulting DOPA@MXene oleogel (DOPA@MXene Gel) exhibited good lubrication performance, with the average friction coefficient decreased from 0.168 to 0.102 and the wear volume exhibited an 81.83 % decrease compared to base oil. Additionally, the load-carrying capacity of DOPA@MXene Gel was enhanced to from 50 N to 450 N. These improvements are attributed to the synergistic interaction between DOPA@MXene and the oleogel, which collaboratively form a complex protective film during friction. This study offers an effective strategy for improving the dispersion of MXene-based lubricant additive and achieving superior tribological properties.
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ACS Applied Nano Materials
·
2026
·
IF 5.5
Jeremiah Hao Ran Huang,Yu-Hsuan Chang,I-Wen Peter Chen
MXenes are promising materials for energy storage due to their high electrical conductivity and unique layered structure. This study demonstrates the dual role of 1-Butyl-3-methylimidazolium tetrafluoroborate (BMImBF4) as both an etching agent and an intercalation medium for synthesizing Ti3C2Tx MXene with enhanced electrochemical performance. In-situ Raman and XRD analyses show that BMIm+ ions intercalate between MXene layers, stabilizing the nanoscale (002) interlayer spacing, preventing restacking and improving ion transport. When tested in the H2SO4–BMImBF4 hybrid electrolyte, the Ti3C2Tx MXene delivers a capacitance of 228.7 F g–1 at a scan rate of 1 mV s–1, compared to 179.9 F g–1 in pure H2SO4, measured on the same batch of materials. This demonstrates that incorporating BMImBF4 into H2SO4 significantly enhances the charge storage capability of Ti3C2Tx MXene. These findings highlight the effectiveness of BMImBF4 in optimizing charge storage and reinforce the potential of ionic liquids for advanced MXene-based energy storage systems.
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ELECTROCHIMICA ACTA
·
2026
·
IF 5.6
Yu-hang Ma,Yi-feng Ding,Liu-hong Yang,Jing Wen,Ke-fan Duan,Ge Dai,Feng-Feng Mo,Jia-feng Wang
The simultaneous monitoring of lactate and potassium ions (K⁺) in blood is critical for the management of critical conditions like crush syndrome, yet it remains a significant challenge. Herein, we present a novel integrated microfluidic electrochemical sensor for the dual-mode detection of these biomarkers. The sensor leverages a synergistic composite of Ti 3 C 2 T x MXene and electrodeposited gold nanoparticles (AuNPs) to create a highly sensitive sensing interface. The microfluidic chip, fabricated with polymethylmethacrylate (PMMA), incorporates two independent detection chambers functionalized with lactate oxidase (LOx) and a valinomycin-based ion-selective membrane, respectively. This design enables specific and parallel detection from a single sample. The fabricated sensor demonstrated excellent performance. In a KCl solution, the sensor exhibited a linear range of 1 μM to 10 mM and a low LOD of 1 μM. In the 1 × PBS configuration of lactate solution, the sensor showed a linear range of 10 μM to 16 mM and an LOD of 10 μM. When applied to the analysis of rat plasma samples, the sensor showed strong correlation with a commercial hematology analyzer, confirming its accuracy and practical utility. This work provides a promising platform for point-of-care testing, offering a fast, convenient, and reliable method for simultaneous biomarker monitoring.
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JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Xu Jin,Shufan Feng,Yanxun Cheng,Baogang Zhao,Jingyun Ma,Jixun Xie,Jiaoxian Yu
Transition metal carbides (M x C y ) have recently emerged as promising candidates for sodium-ion battery (SIB) anodes, among which Mo 2 C stands out due to its metallic conductivity and favorable Na + migration characteristics. Nevertheless, substantial volume expansion and severe particle agglomeration during cycling impair structural integrity and cycling stability, thereby hindering its practical application. To tackle these intrinsic limitations, we synthesized morphology-modulated Mo 2 C/MXene composites by adjusting the mass ratio of Mo source to MXene precursors. One of these composites forms a 3D hierarchical porous framework, in which Mo 2 C nanocrystals are uniformly anchored on conductive Ti 3 C 2 T x MXene sheets, and is named Mo 2 C / MXene-S. MXene acts as an effective electron-transport network and mechanical buffer to alleviate volume fluctuation of Mo 2 C and suppress structural pulverization. Benefiting from the synergistic effect, the Mo 2 C/MXene-S anode exhibits reversible capacities of 406.5/143.6 mA h g −1 at 0.1/2 A g −1 and retains 296.1 mA h g −1 at 1 A g −1 after 1500 cycles. Kinetic analysis shows that Na + storage is dominated by surface-controlled pseudocapacitance. Density Functional Theory (DFT) calculations demonstrate that the composite optimizes Na + adsorption and reduces the diffusion energy barrier. The Na 3 V 2 (PO 4 ) 3 //Mo 2 C/MXene full cell displays stable cycling, offering an effective strategy for developing high-performance SIB anodes.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Ziquan Wang,Zheng Li,Bo Yong,Haiyan Huang,Lei Yao,Libo Deng
Membrane distillation (MD) is a promising technology with great potential to mitigate the crisis of water shortage. However, it still suffers from the low productivity due to that water vaporization on the membrane would reduce the transmembrane temperature and hence the permeate flux. Herein, an electrothermal membrane that can heat the feed solution on the membrane and hence enables the MD operation under a low electrical input was developed. This was achieved by coating a commercial PET-PTFE membrane with MXene nanosheets through a filtration method. The resultant MXene/PET-PTFE composite membrane could heat the surroundings (both air and brine) efficiently, showing a conversion efficiency of 73% at 1 W. Furthermore, it was shown that the composite membrane, while degrades rapidly in highly ionizable brine under a direct current (d.c.) input, could work stably over a long duration at high potential under high-frequency alternating current (a.c.) input. Systematic electrochemical impedance spectroscopic investigation suggested that the reciprocal vibration of ions under a high-frequency a.c. could inhibit the formation of electrical double layer, and thus depresses the electrochemical oxidation of MXene and water splitting. Furthermore, the composite membrane enabled efficient in-situ heating in a Joule heating MD (JHMD) system, delivering a permeate flux of 1.8 kg m −2 h −1 at an input power of 3 W, which is 333% higher than that based on the conventional MD process. Theoretical simulation of the temperature distribution by a finite element method (FEM) confirmed a higher transmembrane temperature in the JHMD system than in the conventional MD, which is responsible for the performance enhancement.
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Materials Horizons
·
2023
·Vol. 10
·期 6
·2262-2270
·
IF 13.3
Renjie Ding,Jinhua Xiong,Qian Yan,Zhong Chen,Zonglin Liu,Xu Zhao,Qingyu Peng,Xiaodong He
Acid rain is a worldwide problem because of the emission of acidic gases into the atmosphere, leading to the acidification of first-order streams and aggravation of fresh water shortage. Therefore, it is of great importance to develop an environmentally friendly method for removing acid from water. Herein, an advanced technology that can achieve aqueous acid purification using solar energy is realized with Ti3C2Tx MXene/polyaniline (PANI) hybrid non-woven fabrics (MPs) through interfacial solar vapor generation, with PANI acting as an acid absorber through the doping process. Benefiting from the porous structure and crumpled micro-surface of MPs, a high evaporation rate of 2.65 kg m−2 h−1 with an efficiency of 93.7% can be achieved under one-sun illumination. Moreover, MPs present an even higher evaporation rate of 2.83 kg m−2 h−1 in high concentration aqueous acid and can generate clean water with a pH higher than 6.5. More importantly, thanks to the unique reversible doping process of PANI, when used as an aqueous acid purifier, MPs show good stability and reusability after dedoping. Our work sheds light on an efficient strategy for dealing with aqueous acid and acid rain.
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高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Xuteng Xing,Yating Sui,Qiushi Li,Miao Yuan,Hantuo Zhao,Dan Zhou,Xiaomeng Chu,Shaojie Liu,Erjun Tang
Two-dimensional Ti 3 C 2 T x MXene is a promising anticorrosive filler for epoxy coating, but only passive protection makes Ti 3 C 2 T x -based composite coating unable to meet long-term anticorrosive requirements. For this reason, the ZnAl-NO 3 LDH layers and active corrosion inhibitor MoO 4 2- are introduced into Ti 3 C 2 T x MXene surface, where LDH layers cannot only be used as the acid response nanocontainer for MoO 4 2- , but also an additional active corrosion inhibitor, and a reservoir to trap Cl - . The obtained ZnAl-MoO 4 LDH@Ti 3 C 2 T x MXene composite corrosion inhibitor is an acid-response and active/passive protective dual-functional composite corrosion inhibitor. The ZnAl-MoO 4 LDH@Ti 3 C 2 T x MXene contained composite coating can exhibit the excellent anticorrosion performance and certain self-healing property, owing to the synergistic effect including the physical shielding effect of two-dimensional Ti 3 C 2 T x MXene, Cl - adsorption/capture effect of hydrotalcite, and inhibition membrane formation of Zn 2+ and MoO 4 2- in the composite corrosion inhibitor. This work is of great significance to the synthesis of multifunctional composite corrosion inhibitors and the application of Ti 3 C 2 T x MXene-based composite coatings in the field of corrosion protection.
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ACS Applied Energy Materials
·
2023
·
IF 6.4
Xi Li,Youping Guo,Yiran Li,Renchun Fu
Transition metal cobalt oxide (Co3O4) with a typical spinel structure is considered a promising electrocatalyst for oxygen evolution reaction (OER). However, its OER catalytic performance is unsatisfactory owing to its limited activity. In this study, we demonstrate that using graphitic carbon nitride (g-C3N4) loaded Co3O4 nanoparticles and then anchoring them onto 2D Ti3C2Tx MXene with a layered structure can significantly enhance the OER catalytic performance. This performance may be due to the well-layered structure of g-C3N4, thereby enabling it to provide more attachment sites for Co3O4 nanoparticles, reducing their agglomeration properties and exposing more active sites to promote OER catalytic performance. When anchoring Co3O4@g-C3N4 on Ti3C2Tx MXene, solid-state interfacial interactions can adjust the structure of electrons and promote the rate of interfacial charge transfer, which enhances the conductivity of the catalyst and further promotes its OER catalytic performance. The overpotential required for TCN is 247 mV at a current density of 10 mA cm–2, which is significantly lower than that of pure Ti3C2Tx MXene (600 mV) and Co3O4@g-C3N4 (387 mV), in addition to exhibiting excellent electrochemical stability.
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