Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 5
·123534
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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 ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Lichan Wu,Liuyan Zhang,Yidong Huang,Zeyi Guan,Renyu Zhou,Yan Pan,Danting Wu,Gengzhe Shen,Yanmei Zhang
Developing efficient bifunctional electrocatalysts capable of facilitating water splitting to produce hydrogen and oxygen remains a significant challenge. This study presents a controllable conversion of MOFs to carbon-coated NiCoP nanostructures via low-temperature phosphidation using a NiCo-MOF/Ti 3 C 2 T x precursor, leading to the construction of the NiCoP@C/Ti 3 C 2 T x bifunctional electrocatalyst. Characterization of the synthesized NiCoP@C/Ti 3 C 2 T x composite material and electrochemical testing revealed that the material exhibits high catalytic activity in both HER and OER. At a current density of 10 mA cm −2 , the overpotential for HER is measured at 58 mV with a Tafel slope of 60 mV dec −1 , while the overpotential for OER is found to be 240 mV, with a Tafel slope of 42 mV dec −1 . The potential required to achieve a current density of 10 mA cm −2 for overall water splitting is 1.53 V, which is lower than commercial Pt/C and RuO 2 electrocatalysts. Additionally, the material demonstrates excellent electrocatalytic performance at higher current densities. The outstanding electrocatalytic performance is attributed to the effective stabilizing effect of the carbon-coated layer on the high-activity NiCoP particles, thereby suppressing the loss of active sites during the reaction. Moreover, the strong interfacial coupling effect between NiCoP and Ti 3 C 2 T x significantly enhances the interfacial charge transfer kinetics, consequently improving catalytic efficiency.
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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 Electronic Materials
·
2026
·
IF 4.7
Long Yu,Yi’na Yang,Tianran Zhao,Liyang Zhao,Jia Chen,Chunna Yu,Chang Zhao,Guangjian Xing
As biocompatible soft materials with stimuli-responsive characteristics, wearable strain sensors based on conductive hydrogels hold substantial promise across diverse engineering fields. However, their practical applications are often hindered by limited sensitivity and issues related to single functionality. This study presents a multifunctional composite hydrogel composed of PAA/PVA/PEDOT:PSS/Ti3C2TX designed for flexible strain sensors and synthesized through a straightforward one-pot polymerization technique. The incorporation of Ti3C2TX MXene nanosheets significantly enhances the porous architecture and mechanical properties of the hydrogel. This hydrogel features a combination of covalent and physical cross-linking networks, showcasing remarkable elastic recovery, puncture resistance, stretchability, robust interfacial adhesion, and self-healing capabilities. The hydrogel-based strain sensor demonstrates exceptional performance, including high sensitivity (GF = 21.36 in the 31–50% strain range), a low detection limit (53.0 Pa), rapid response and recovery times (42 ms/38 ms), and long-term stability (>1,600 cycles). Its practical applications in information encryption, handwriting recognition, and wireless robotic motion monitoring highlight its potential as a versatile platform for advanced flexible sensing technologies.
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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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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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JOURNAL OF NANOBIOTECHNOLOGY
·
2023
·Vol. 21
·期 1
·1-11
·
IF 10.2
Wu Zhihua,Zhao De,Han Xin,Liu Jichang,Sun Ying,Li Yaogang,Duan Yourong
Background Superhydrophobic substrate modifications are an effective way to improve SERS sensitivity by concentrating analyte molecules into a small surface area. However, it is difficult to manipulate low-volume liquid droplets on superhydrophobic substrates. Results To overcome this limitation, we deposited a hydrophilic Ti 3 C 2 T x film on a superhydrophobic ZnO nanorod array to create a SERS substrate with improved analyte affinity. Combined with its interfacial charge transfer properties, this enabled a rhodamine 6G detection limit of 10 −11 M to be achieved. In addition, the new SERS substrate showed potential for detection of biological macromolecules, such as microRNA. Conclusion Combined with its facile preparation, the SERS activity of ZnO/Ti 3 C 2 T x suggests it may provide an ultrasensitive environmental pollutant-monitoring and effective substrate for biological analyte detection. Graphical Abstract
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DALTON TRANSACTIONS
·
2022
·Vol. 52
·期 1
·201-210
·
IF 4.569
Yi Shi,Xiaolong Lu,Zhiwei Xu,Qi Wang,Huafei Guo,Jialu Jia,Bijun Fang,Ningyi Yuan,Jianning Ding
MXene film electrodes for supercapacitors, assembled with MXene nanosheets as structure units, inevitably suffer from self-restacking, which severely restrains ion transport kinetics and results in insufficient active site utilization and poor rate capability. Herein, an in situ foaming strategy employing the accumulated gas generated during the etching of sacrificial templates, combined with the confinement between the MXene film, has been proposed to fabricate pores between stacked MXene sheets and along the vertical direction of the film. The surface chemistry of the foamed film was further modified by alkali washing treatment to replace hydrophobic –F groups with hydrophilic –OH groups to improve electrolyte penetration and introduce more active sites. The resultant porous MXene film electrode exhibits a greatly improved specific capacitance (354.1 F g−1 at 5 mV s−1) and unparalleled rate capability (with a capacitance retention of 96.1% at 2000 mV s−1). This work demonstrates a facile but efficient method for the construction of porous MXene films, simultaneously providing insights into the promising applications of MXenes.
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ACS Applied Nano Materials
·
2023
·
IF 5.9
Xinmeng Zhang,Yakun Li,Wanyin Ge
Dopamine (DA) is a small biological molecule that causes a variety of diseases when its concentration is abnormal. Therefore, highly sensitive detection of DA is very important for the development of biomedicine and monitoring of human health. Herein, we prepared a carbon cloth (CC)/Ti3C2Tx/NiCoP composite as a highly sensitive electrochemical sensor for DA detection. Porous NiCoP was grown on the surface of CC and Ti3C2Tx by hydrothermal and phosphating treatments. The composite integrated the advantages of large specific surface area of zero-dimensional NiCoP quantum dots, rich electrochemical active sites of one-dimensional porous NiCoP nanowires, hydrophilicity of two-dimensional Ti3C2Tx nanosheets, and high conductivity of three-dimensional CC substrates. The sensor has high sensitivity (31.4101 μA μM–1 cm–2), wide detection range (0.17–784.55 μM), low detection limit (0.18 nM), elevated stability, and anti-interference ability. By analyzing the conductivity, hydrophilicity, and electrochemically active surface area of the CC/Ti3C2Tx/NiCoP composite, the reasons for its excellent performances are revealed for DA detection. At present, the research on NiCoP mainly focuses on hydrogen evolution, oxygen evolution, and supercapacitor. This research provides a regulatory strategy for the application of phosphide materials in sensors.
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Frontiers in Chemistry
·
2022
·
IF 5.545
Hu Yingzi,Xu Zhiliang,Pu Junmei,Hu Lanping,Zi You,Wang Mengke,Feng Xingmei,Huang Weichun
The bacterial accumulation at the margins of dental resin composites is a main cause of secondary caries, which may further lead to prosthodontic failure. In this regard, this study for the first time incorporated 2D MXene Ti3C2Tx nanosheets (NSs) into epoxy resin at different mass ratios (0, 0.5, 1.0, and 2.0 wt%) by solution blending and direct curing for dental applications. Compared to the pure resin, the as-fabricated MXene/resin composite not only exhibited improved mechanical and abrasive results but also displayed gradually improved antibacterial activity with MXene loading which was further enhanced by illumination in natural light due to the high photothermal efficiency of MXene. In addition, the cytotoxicity result demonstrated that the MXene-modified resin did not cause severe damage to normal cells. This novel MXene/resin nanocomposite could pave the way for new designs for high-performance, multifunctional nanocomposites to effectively protect dental health in daily life.
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