Journal of Bioresources and Bioproducts
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2025
·
IF 13
Shuwei Tang,Lansheng Wei,Zhengguo Wu,Jiayao Weng,Jiwen Luo,Xiaoying Wang
Efficient cleanup of crude oil continues to be a global challenge owing to its inherent high viscosity, which makes it difficult to remove with conventional porous adsorbents. Here, a novel multifunctional aerogel was fabricated through directional freeze-drying, leveraging its photothermal properties and directional structure for the rapid cleanup of crude oil. The aerogel incorporates 2,2,6,6-tetramethyl-1-piperidinyloxy oxidized nanocellulose to enhance Ti 3 C 2 T x (MXene) to construct functional networks, MXene/gold nanoparticles (MX/AuNPs) as photothermal absorbers, and methyltrimethoxysilane for hydrophobic coatings. After 30 compression-release cycles at 90% strain, the strain retention of the aerogel is 85.7%, indicating its mechanical super-elasticity. The as-prepared aerogel showed durable hydrophobicity (145°), high oil/organic solvent absorption capacity (45.7–85.6 g/g), and efficient photothermal conversion, rapidly attaining and sustaining 76 °C. Interestingly, for viscous crude oil that cannot be absorbed for a long time, the aerogel completed the absorption within 10 s after illumination, demonstrating an improved absorption ability of viscous crude oil. Furthermore, the obtained aerogel successfully achieved controlled and rapid light-driven motion, as well as long-lasting photothermal sterilization performance. This work presents a feasible strategy for developing multifunctional composite aerogels, addressing the increasing demands in crude oil separation applications.
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Small
·
2025
·
IF 12.1
Dongli Li,Zhan Zhang,Mingze Jiao,Yinan Dong,Shuyan Yu,Congju Li,Hongyan He,Jingkun Jiang,Kaihui Liu,Zehui Li
2D metal carbides/nitrides (MXenes) have attracted considerable interests in NH 3 sensing due to their high electrical conductivity and abundant terminal groups. However, the strong interlayer interactions between MXene nanosheets result in challenges related to sensor recovery and rapid response decay in MXene-based sensors. Here, A one-step hydrothermal strategy is developed that anchors Zn atoms and grows ZnO polycrystals on the Ti vacancies of Ti 3 C 2 T x layers, forming a sandwich-structured ZnO/Ti 3 C 2 T x heterojunction. At room temperature, the NH 3 sensitivity of ZnO/Ti 3 C 2 T x is a remarkable 45-fold higher than that of Ti 3 C 2 T x , with a low detection limit of 138 ppb and a rapid recovery time of 39 s. Furthermore, the heterojunction exhibits exceptional long-term stability, maintaining a consistent response over 21 days. The results confirm that in situ intercalation of the ZnO polycrystals effectively solves the recovery problem in MXene substrates by completely exfoliating the Ti 3 C 2 T x nanosheets. Meanwhile, the room-temperature sensing performance and recovery speed of the sandwich-structured ZnO/Ti 3 C 2 T x is enhanced by rapid electron conduction. This straightforward and effective route for in situ exfoliation and intercalation of MXene layers promises the broader use of 2Dmaterial heterojunctions in sensing applications.
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ACS Applied Materials & Interfaces
·
2024
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IF 8.3
Kai Yan,Hua Chen,Xiao Li,Fei Xu,Jun Wang,Qunna Xu,Yan Zong,Yabin Zhang
Continuous monitoring of physiological health status and effective protection against external hazards is an indispensable aspect of healthcare management for critically vulnerable populations, particularly for infants or babies. So, the exploration of all-in-one devices remains critical to avoiding their injury and illness. The integration of multiple properties such as sensing, electromagnetic protection, warming/cooling, and water/bacterial repellence into a common fabric is no doubt a promising solution to coping with diverse application scenarios. However, achieving simultaneous integration in an effective and durable fashion faces huge challenges. Herein, multifunctional fabric was achieved by sequentially coating MXene, carbon nanotubes (CNTs), and self-healing polyurethane (PU) onto cotton fabric. The outstanding conductivity of MXene and CNTs as well as the self-healing ability of PU synergistically enable a flexible, breathable, protective, and sensing fabric with a good durability. It could detect the body motions like bending of the finger, elbow, wrist, and knee, with a high gauge factor of 8.78 and fast response. Moreover, this sensing fabric could protect the wearers against electromagnetic waves and bacteria, delivering a minimum reflection loss of −57.6 dB at 7.6 GHz and high bacterial inhibition efficiency due to the incorporation of MXene and polyethylenimine. Besides, the electrothermal performance of carbonaceous materials enables them to act as a heater for body warmth. The synergistic design of this multifunctional textile offers a promising strategy for producing advanced smart textiles, holding great promise in infant or baby healthcare.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Lu Tang,Kechen Zhou,Huiyu Su,Jiahong Tang,Qirui Wu,Lingfei Luo,Xiang Guo,Dawen Zeng
Detecting nitrogen dioxide (NO2) at room temperature (RT) is crucial for advancing environmental monitoring technologies, enabling efficient and practical air quality assessment. Two-dimensional (2D) MXene nanomaterials, recognized for their large specific surface area (SSA), abundant functional groups, and tunable electrical properties, have attracted considerable attention as promising candidates for room temperature gas-sensing applications. However, despite their potential, challenges, such as low gas adsorption efficiency, limited sensitivity, and poor selectivity, hinder their broader application and development, highlighting the need for further research. Here, we introduce a zero-dimensional (0D)/2D heterojunction gas-sensitive structure by synthesizing SnS2 quantum dot (QD)-sensitized Ti3C2Tx MXene nanocomposites via a hydrothermal method. The carefully designed gas sensor exhibits a significantly enhanced response value (RV) of 5.83% for 10 ppm of NO2 and a low detection limit of 500 ppb at RT, achieving an RV that is 5.8 times higher than that of pure Ti3C2Tx. Additionally, the sensor demonstrates high sensitivity (0.76 ppm–1 in the 0.5–5 ppm range), excellent selectivity, and outstanding stability, with a performance degradation of only 3.2% over 4 weeks. The exceptional performance arises from the synergistic effects of the quantum confinement properties of SnS2 QDs and the superior conductivity of Ti3C2Tx, which together provide abundant active sites for gas adsorption and facilitate efficient charge transfer pathways. Furthermore, the formation of the heterojunction modulates the resistance, enhancing room temperature sensing capabilities. The synthesized nanomaterials offer significant potential for advancing the design of heterostructures that integrate 0D QDs with 2D nanomaterials, paving the way for highly efficient NO2 detection at RT. Moreover, maintaining an optimal operating temperature further enhances the accuracy and reliability of real-time NO2 monitoring systems.
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ChemistrySelect
·
2025
·Vol. 10
·期 36
·e04484
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IF 2
Xiaoqian He,Peicheng Jiang,Qilin Wang,Xinyi Luo,Shu Chen
Organic water pollution poses a global challenge. The unique properties of transition metal carbides (MXenes) make them ideal candidate adsorbents for removing water contaminants. However, limitations in the types and quantities of surface functional groups on MXenes, coupled with their inherent instability, have restricted their application in adsorbing organic dyes such as methyl blue. This study prepared sulfur–nitrogen co-doped MXenes (S─N─MX) through thermal annealing co-doping of MXenes with thiourea. This method successfully introduced sulfur and nitrogen elements as functional groups into the MXene structure, increasing the variety and quantity of surface functional groups and significantly enhancing the number of active sites. This process effectively suppresses nanolayer stacking, enhances structural stability, and substantially increases the material's adsorption capacity. Langmuir adsorption isotherm measurements reveal a maximum adsorption capacity of 239.8 mg·g −1 at 298 K and pH = 9. The material achieves efficient adsorption of methylene blue through electrostatic interactions, Lewis acid–base interactions, and hydrogen bonding. The incorporation of sulfur and nitrogen elements provides a protective effect, ensuring the composite adsorbent maintains excellent stability during adsorption–desorption cycles. After five adsorption-desorption cycles, its adsorption capacity retained over 85%. Graphical S–N co-doped MXene is synthesized via thermal annealing with thiourea, which introduces abundant surface functional groups and enhances active sites. This adsorbent exhibits a high methylene blue adsorption capacity of 239.8 mg·g - 1 through electrostatic attraction, Lewis acid–base interaction, and hydrogen bonding. It also demonstrates excellent recyclability, retaining over 85% efficiency after five cycles.
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MATERIALS SCIENCE & ENGINEERING R-REPORTS
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2025
·
IF 26.8
Song Luo,Xiaohe Tian,Li Pan,Runhua Zhou,Shunda Zhu,Zuyi Yan,Kui Rao,Bo Liu,Shaofei Wang,Hong Wu
With the increasing severity of urban heat islands, personal thermal management (PTM) has emerged as a critical solution for maintaining human thermophysiological comfort in dynamic environments. Traditional air conditioning systems are energy-intensive and lack individualized control, highlighting the need for efficient, low-energy PTM strategies. Current PTM materials often operate in static modes, limiting their adaptability to varying conditions. To overcome this, we developed a Janus-structured humidity-photothermal actuator (TpPa-SO₃H/Ag@M) by integrating a TpPa-SO₃H covalent organic framework (COF) for rapid water transport and a silver nanoparticle (AgNP)-intercalated MXene (Ag@M) for humidity gradient formation and enhanced photothermal conversion. The COF layer facilitates moisture accumulation, while the Ag@M laminar structure delays water diffusion, enabling a sensitive humidity response. AgNPs expand the MXene interlayer spacing, improving water uptake and response efficiency by triple compared to initial TpPa-SO₃H/MXene systems, while also preventing structural collapse during cycling. Additionally, AgNPs enables strong solar absorption, boosting photothermal performance. Under combined humidity and light stimulation, the Janus actuator exhibits dynamic bending, enabling autonomous sweat evaporation and body temperature regulation without external energy input. This dual-responsive design offers a promising approach for adaptive, energy-efficient PTM in extreme environments.
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ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Xin Sun,Jing Yu,Yan Zhang,Qi Liu,Rongrong Chen,Jingyuan Liu,Jiahui Zhu,Jun Wang
Atomic clusters exhibit superior performance in heterogeneous catalysis due to their unique electronic states and highly exposed active surfaces. Nevertheless, significant challenges persist in achieving the precise and efficient synthesis of atomic clusters while preventing undesirable formation of coexisting species, particularly nanoparticles. Herein, a one-step in situ phase transition engineering strategy is reported for the synthesis of atomic platinum clusters by vapor deposition on Ti 3 C 2 Cl 2 MXene and TiC heterogeneous interface (Pt-MXene/TiC) in molten salt, where Pt clusters can be acquired over a slight amount of Pt contents (0.298 wt.%). The strongly polarized molten salt induces the desired confinement of atomic-scale Pt clusters. The construction of heterogeneous interfaces enhances the local electric field and accelerates the electron transfer between Pt and the substrate. As a result, Pt-MXene/TiC-950 exhibits an exceptional increase in mass activity and turnover frequency (TOF) for hydrogen evolution reaction (HER) at 49.4 and 46.7 folds of 10% commercial Pt/C. Further theoretical calculations elucidate that the Pt species in Pt-MXene/TiC-950 possess moderate d-band center, which enables optimized selectivity and activity for intermediates adsorption in HER process. This work provides some guidelines for leveraging molten salt and heterostructure to enhance the precision and synthesis efficiency of atomic clusters.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Haiyang Li,Xuanhe Ru,Ying Song,Huanping Wang,Chenhui Yang,Shuirong Zheng,Lei Gong,Xiaoguang Zhang,Hongji Duan,Zhenguo Liu,Qiuyu Zhang,Yanhui Chen
There is a pressing demand for efficient electromagnetic interference (EMI) shielding materials with strong electromagnetic wave absorption and low reflection for the protection of next-generation communication technologies and wearable electronic devices. In this work, silicone rubber/MXene/Fe3O4 (SRMF) composites with a sandwich-like structure were fabricated using vacuum-assisted dipping and curing. The top and bottom layers of the SRMF composites are magnetic layers containing Fe3O4 particles and silicone rubber (SR), while the middle layer is a 3D conductive network of MXene aerogel film and SR. This sandwich-like structure enables the composites to effectively shield incident electromagnetic waves and improve the absorption of electromagnetic waves through a mechanism of “absorption–reflection–reabsorption”. The electromagnetic shielding performance of a sandwich-structured SR composite containing 1.2 wt % MXene and 20 wt % Fe3O4 reached 55.5 dB, which was higher than that of a blended SRM1.2F20b composite containing the same proportion of MXene and Fe3O4 (23.1 dB), while the power coefficient of reflectivity was 0.65. The SRMF composites also retained their EMI shielding performance after 1000 bending cycles and displayed good tensile strength. These flexible SRMF composites have broad application prospects in the field of electromagnetic protection of wearable devices.
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JOURNAL OF POWER SOURCES
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2021
·
IF 9.127
Hao Liu,Pan He,Jiaxin Cao,Tao Duan,Qingquan Kong,Weitang Yao
The nature of vanadium oxides with multiple valence states and a rich species of oxides facilitates the construction of high performance batteries. Among these, vanadium dioxide (VO 2 ), despite offering several advantages, is seldom reported in anode materials due to its inferior cycling stability and rate performance caused by large volume changes. Herein, we employed a rational structural strategy to assemble VO 2 -NTs/Ti 3 C 2 anode with a multidimensional cross-linked structure using VO 2 nanotubes (VO 2 -NTs) and Ti 3 C 2 T x MXene . Specifically, the abundant multidimensional channels of VO 2 -NTs/Ti 3 C 2 reduce the diffusion impedance of the ions, and the enhanced intrinsic conductivity and highly robust structure solve the problems originally present in VO 2 , which are verified in characterization and density functional theory calculations. Consequently, the composite electrode shows ultra-high reversible capacity (1425 mAh g −1 at 1 A g −1 ), excellent cycling performance (516 mAh g −1 at 5 A g −1 after 2000 cycles) and superior rate performance (703 mAh g −1 at 10 A g −1 ), and also exhibits decent sodium storage performance, representing the best comprehensive battery performance of VO 2 -based anodes to date.
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COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Kaili Gong,Lian Yin,Haifeng Pan,Shaohua Mao,Lu Liu,Keqing Zhou
As a graphene-like material, MXene , represented by Ti 3 C 2 T x , has been found to possess promising flame retardant potential in polymers due to their excellent thermal and catalytic actions, as well as lamellar barrier effect. Thus, it is of great significance to explore whether MXene with double transition metal components has a higher flame retardant efficiency. Herein, Ti 3 C 2 T x and bimetallic MXene (Mo 2 Ti 2 C 3 T x ) were fabricated by acid-etching method and then introduced into epoxy resin (EP) for the comparative investigation of their flame-retardant effect. The results indicated that MXenes were homogeneously dispersed in EP matrix, which can contribute to the improvements of thermal and flame retardant properties of EP composites. Upon the incorporation of 1 wt% Mo 2 Ti 2 C 3 T x MXene, the EP composites achieved a significantly reduced maximum mass loss rate (R max ) by 39.4%, superb over EP/Ti 3 C 2 T x composites. Moreover, Mo 2 Ti 2 C 3 T x MXene endowed EP composites with a notable downward trend in fire risk, reflected by the decreasing PHRR of 34%, PSPR of 32.7%, TSP of 57.7%, PCO of 30.8%, along with significantly reduced SF value by 72.7%, which was superior to EP/Ti 3 C 2 T x composites. The strong catalytic attenuation and charring effect of transition metal Mo–Ti elements for bimetallic Mo 2 Ti 2 C 3 T x MXene, as well as nanosheet structure, imparted excellent fire retardant performance to EP composites. This work provides new insights into the application of bimetallic MXenes in flame retardant polymer composites .
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Nanoscale
·
2022
·Vol. 14
·期 10
·3777-3787
·
IF 8.307
Xuri Wu,Feng Tan,Shizhu Cheng,Yangyang Chang,Xiaochun Wang,Lingxin Chen
The composition of protein corona affects the behavior and fate of nanoparticles in biological systems, which strongly relates to the intrinsic properties of nanoparticles and proteins. Here, three types of MXene Ti3C2Tx nanosheets are prepared by different etching methods, and certain physicochemical characteristics of the nanosheets before and after exposure to human plasma (HP) are characterized. The Ti3C2Tx nanosheets with protein coronas suffer more easily from aggregation than pristine Ti3C2Tx. The composition of protein coronas by LC-MS/MS-based label-free proteomic analysis reveals a high overlap of protein types and functions but a significant difference in relative protein abundance for the three Ti3C2Tx. Immunoglobulins and coagulation proteins are highly enriched while albumin is depleted in the coronas compared with their abundance in original HP. The random forest classification model predicts that the main driving forces for the adsorption of HP proteins on Ti3C2Tx are hydrogen bonding, steric hindrance, and hydrophobic interaction. This study provides insights into the colloidal stability of Ti3C2Tx nanosheets and their interaction with human plasma proteins.
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Nanoscale
·
2019
·Vol. 11
·期 30
·14123-14133
·
IF 6.97
Qingwen Guan,Junfei Ma,Wenjing Yang,Rui Zhang,Xiaojie Zhang,Xiaoxiao Dong,Yuting Fan,Lulu Cai,Yi Cao,Yilin Zhang,Neng Li,Quan Xu
Quantum dots, derived from two-dimensional (2D) materials, have shown promise in bioimaging, sensing and photothermal applications, and in white light emitting devices (WLEDs). Herein, nitrogen and phosphorus functionalized Ti3C2 MXene based quantum dots (N,P-MQDs) were successfully prepared through a top-bottom hydrothermal method. This type of photoluminescent quantum dots has realized green fluorescence for the first time at around 560 nm with a photoluminescence quantum yield (PLQY) of 20.1%, the highest ever reported; meanwhile, it also exhibits excellent photostability and pH resistance capacities. Comprehensive characterization and well-resolved density functional theory (DFT) calculation were implemented to determine the mechanism of fluorescence shift and enhancement. Furthermore, the N,P-MQDs have been proved to efficiently act as fluorescent probes for macrophage labeling. In addition, the high sensitivity of the N,P-MQDs toward Cu2+ ions made them a low cost, sensitive, environment-friendly, and label-free fluorescence platform for Cu2+ detection. The outstanding performance of Ti3C2 MXene based quantum dots has demonstrated their great potential to be used as promising fluorescent probes in the fields of biological imaging, optical sensing, photoelectric conversion, etc.
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