COMPOSITES COMMUNICATIONS
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2024
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IF 6.5
Di Zhang,Yue Ren,Yahong Li,Yuezhan Feng,Bing Zhou,Chuntai Liu
Application of three-dimensional (3D) carbon framework in phase change material (PCM) has aroused a tremendous interest. However, implementing a high alignment carbon framework with low interfacial thermal resistance (ITR) remain challenging. Herein, we demonstrated a synergetic effect strategy by Ti 3 C 2 T x MXene and graphene nanoplate (GNP) to achieve a 3D thermally conductive framework with high alignment skeleton and low filler-to-filler ITR. Typically, the 3D anisotropic carbon framework is fabricated by unidirectional ice template freezing cellulose nanofibers (CNF)/GNP solution with the assistance of MXene. The abundant functional groups of MXene and the similar layered structure promote the dispersion stability of GNP in CNF aqueous solution, resulting in the significant improvement in GNP alignment and the filler-to-filler ITR. Therefore, the final phase change composites obtained by impregnating polyethylene glycol (PEG) into the framework achieves a satisfactory thermal conductivity (TC) of up to 3.49 W/m K at only 6.25 vol% filler loading. Combining the solar-thermal conversion ability of graphene and MXene, the PCM reveals a rapid energy conversion, transfer and storage capability. More importantly, the phase change enthalpy of the PCM can be as high as 164.3 J/g, with little change even after 50 heating-cooling cycles, and the existence of carbon framework can effectively prevent the leakage phenomenon in solid-liquid conversion process, ensuring its shape stability.
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Materials Today Chemistry
·
2024
·
IF 6.7
Linwei Li,Zihan Xing,Tao Liao,Jinyu Wang,Ziqiang Xu,Ying Kuang,Cao Li
Chemodynamic therapy (CDT) is a new cancer treatment that uses low-valence transition metal ions to catalyze intracellular Fenton/Fenton-like reactions, producing hydroxyl radicals (•OH) to eliminate cancer cells. However, achieving satisfactory therapeutic outcomes with CDT alone can be challenging. In this work, we reported an anticancer drug delivery DOX@HMDN-TQDs@PEI-PEG (DMTP) based on hollow mesoporous manganese dioxide nanoparticle (HMDN), which has the potential to improve cancer therapy by combining synergistic therapeutic and tumor magnetic resonance imaging (MRI) capability. After loading the anticancer drug doxorubicin hydrochloride (DOX), the pores of HMDN were sealed with polyethyleneimine (PEI) modified Ti 3 C 2 T x MXene quantum dots (TQDs) and finally modified with polyethylene glycol (PEG) to obtain the final system. HMDN depletes glutathione (GSH), which is harmful to CDT, in cancer cells, and generates Mn 2+ that can be used for both CDT and MRI. TQDs can also be used for highly effective photothermal therapy (PTT) that enhances CDT. The combination of DOX with chemotherapy can significantly inhibit tumor growth. In addition, DMTP combines the capability of tumor MRI as Mn 2+ is also a T 1 -weighted contrast agent . This multifunctional delivery system provides new ideas for research related to tumor diagnosis and treatment.
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CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Na Li,Xinliang Wang,Ying Liu,Yunfeng Li,Jisheng Li,Zhihui Qin,Tifeng Jiao
Epidermal sensors capable of monitoring various physical signals are vital in wearable healthcare applications. MXene-based conductive hydrogels have become promising candidates as skin-attachable sensors for these purposes. However, due to the easy oxidation and weak combination of MXene nanosheets with network matrix, it remains challenging to construct a mechanically tough, highly conductive and skin-conformal hydrogel for reliable signal recording (especially weak electrophysiological signals). Herein, a new conductive MXene-based hydrogel is fabricated through introducing silk fibroin (SF)-modified MXene (MXene-SF) into polyacrylamide (PAM) network. It is demonstrated that the encapsulation of SF on MXene surfaces greatly improves its stability, and meanwhile induces the formation of multiple noncovalent interactions between MXene-SF and PAM chains. The resulting hydrogel exhibits high stretchability (1560 %), remarkable toughness (165 kJ/m 3 ), high conductivity (0.25 S/m) and self-adhesion. This hydrogel is high-sensitive in a large strain range for detecting various human motions. Especially, the high conformal adhesion and low interface impedance make the hydrogel bioelectrodes precisely monitor weak electrophysiological signals (e.g. electromyogram and electrooculogram), successfully achieving sign language translation and eye tracking. Additionally, the hydrogel has great thermosensitive capacities for body temperature monitoring. This study provides a general strategy for designing MXene-based hydrogels with tailored functionalities as flexible electronics.
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Nanoscale
·
2024
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IF 5.8
Bingjie Wu,Zhenghui Xie,Qiwu Shi,Junlong Yang,Chul B. Park,Pengjian Gong,Guangxian Li
The complex hybrid nanostructure combining a two-dimensional (2D) conductive material and a hierarchical nanoscale skeleton plays an important role to enhance its piezoresistive sensitivity. To construct such a novel hybrid nanostructure, a piezoresistive sensor was designed with the following strategy to take the full advantages of 2D MXene and nanoscale fibrils: ethylene oxide propylene oxide random copolymer (EOPO) was grafted to ethylene-vinyl alcohol (EVOH) molecular chains and was foamed by an environmentally-friendly supercritical CO2 (scCO2) foaming technology to fabricate abundant nanoscale EVOH fibrils surrounding micropores; MXene featured as a 2D structure of nanoscale size that strongly interacted with this hierarchical nanoscale skeleton, and MXene not only convolved on nanoscale fibrils to generate bumps but also MXene covered the end of broken fibrils to build spots, and furthermore, MXene adhered on the soft EOPO embedded EVOH fibrils to form wrinkles, in which these bumps, spots and wrinkles assembled by highly conductive 2D MXene offered sufficient contacts when the hierarchical nanoscale skeleton was compressed (these contacts would then destruct when the skeleton recovered). Such an elaborated hybrid nanostructural design exploits the full potential of 2D MXene and hence achieves an ultra-high sensitivity of 6895.0 kPa−1 for this fabricated MXene piezoresistive sensor.
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JOURNAL OF MEMBRANE SCIENCE
·
2024
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IF 8.4
Yingbo Li,Jing Ma,Hongjun Lin,Cheng Chen,Saleam Raza,Qianqian Zeng,Xinchun Lu,Liguo Shen
The development of composite membranes utilizing transition metal carbides and nitrides, exemplified by Ti 3 C 2 T x (MXene), has proven efficacious in the treatment of oily wastewater. However, challenges arise from the prolonged and convoluted transport paths within MXene interlayer nanochannels, significantly impeding mass transfer and diminishing membrane permeability. This investigation incorporated porous covalent organic frameworks (COFs) as intercalating agents into two-dimensional (2D) MXene-based membranes to expand the interlayer nanochannels. The resulting MXene@COF-TpBD functional layer polyethersulfone (PES) composite membrane exhibited a distinctive dual superoleophobic surface, concurrently manifesting underwater superoleophobicity and underoil superhydrophobicity (underwater oil contact angle >150°, underoil water contact angle >150°). The membranes exhibited excellent water flux (up to 4092.7 L m −2 h −1 ·bar −1 ), efficient oil-water emulsion separation (up to 1908.4 L m −2 h −1 ·bar −1 , rejection rates >99.78 %), noteworthy fouling resistance and structural stability, outperforming most of existing similar membranes. Furthermore, supported by the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, the incorporation of COF-TpBD improved the antifouling characteristics of the composite membrane. This work presents innovative insights into the improvement of 2D MXene membranes and the use of COF-TpBD for the specific remediation of oily wastewater.
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CRYSTENGCOMM
·
2024
·Vol. 26
·期 38
·5440-5451
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IF 2.6
Xiaoyun Ye,Hangyu Zhong,Yumei Zhang,Xuehua Liu,Wei Tian,Li-An Ma,Qianting Wang
Previous studies on photocatalytic technology have shown that doping co-catalysts and constructing composite heterojunctions are effective strategies for improving the photocatalyst performance. The Ti3C2/SrTiO3/g-C3N4 composite photocatalyst with a gradient heterostructure was prepared by the high-temperature calcination method with Ti3C2 as the co-catalyst. The effects of g-C3N4 content on the microstructure and hydrogen evolution rate of the Ti3C2/SrTiO3/g-C3N4 composites were investigated under simulated sunlight. The results showed that the photocatalyst with 60 wt% of g-C3N4 had the optimal hydrogen evolution rate of 1733.13 μmol g−1 h−1 after simulated sunlight irradiation for 4 h, which was approximately 3.3 times higher than that of Ti3C2/SrTiO3. After four photocatalytic hydrogen evolution cycles, no significant decrease in the hydrogen evolution rate of the Ti3C2/SrTiO3/g-C3N4 composite was observed. This work may serve as a rational reference on the synergistic effect of heterostructures and cocatalysts to improve the separation effect of electron–hole pairs, thus improving the hydrogen evolution effect of the catalyst.
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POLYMER
·
2024
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IF 4.1
Fan Zhang,Meng-hang Gao,De-xiang Sun,Nan Zhang,Jing-hui Yang,Xiao-dong Qi,Yong Wang
Utilizing biomass to create eco-friendly dielectric materials satisfies the criteria for sustainable development in terms of both environmental protection and economic growth, but the relatively low energy storage density is far below the application requirements. Here, regenerated cellulose/MXene (RC/M) composite films were manufactured, and a glutaraldehyde (GA)-assisted crosslinking was proposed to further tailor the microstructure and performances of the RC/M composite films. The results suggested that likened to the original RC/M composite films without crosslinking, the crosslinked composite films (CRC/M) exhibited more integrated structure and fewer defects, apparently reduced dielectric loss and largely enhanced breakdown strength. Consequently, at 288.61 MV/m with MXene concentration of 1 wt%, the energy storage density achieved to 2.41 J/cm 3 , which was around 6.34 and 1.13 times those of the neat RC film (0.38 J/cm 3 ) and pure CRC film (2.12 J/cm 3 ), respectively. Crosslinking reaction consumed the polar groups of MXene and cellulose matrix, leading to the great reduction of hydrophilicity of the composites, which reduced the water adsorption ability, facilitating the improvement of MXene stability. The effects of storage mode and time on evolution of dielectric performances were also studied. The good comprehensive properties endow the CRC/M composite films with potential applications in next generation dielectric capacitors.
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JOURNAL OF POWER SOURCES
·
2024
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IF 8.1
Zicong Yang,Yanhui Chen,Yukun Chang,Xiangxian Song,Jinshu Wang,Hongyi Li
In order to enhance the conductivity and catalytic efficiency of non-noble electrocatalyst, an electrocatalysts consisting of ZnCo metallic double oxide with S doping embedded on V 2 C MXene for oxygen evolution reaction (OER) is synthesized. Cobalt serves as the primary active site, while zinc contributes to improve conductivity owing to its high electronegativity. Sulfur doping plays a crucial role in reducing the energy barrier of rate determining step of OER. The V 2 C MXene as a substrate can promote conductivity as well, resulting in synergistic effect. The electrocatalyst exhibits a low overpotential of 240 mV at 10 mA cm −2 in alkaline electrolyte, surpassing that of IrO 2 commercial electrocatalyst. The potential shows only a minimal ∼5 mV day after 72-h stability test at 20 mA cm −2 . The current density at 1.6 V vs RHE is 2 times that of commercial IrO 2 . Both theoretical calculation and experimental result demonstrate the advantage brought by the incorporation of zinc and sulfur. This work introduces a new idea of synergetic effect in non-noble metallic electrocatalysis.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Cailin Yang,Qiuyu Mei,Haipu Li,Zhian Wang,Hua Wan,Kai Han
We developed electrospun MXene/PAN nanofiber membranes (EMPs) for efficient photothermal interfacial evaporation (PIE) in radioactive wastewater treatment. Ti3C2Tx nanosheets were uniformly intercalated into the PAN matrix during electrospinning, improving membrane stability and durability. We used the CIE Lab color space to analyze the relationship between membrane color and solar absorption, and the EMP membrane showed a strong average light absorption of 92.7%. A two-dimensional (2D) water transport structure was employed to improve water supply during evaporation. As a result, the EMP evaporator reached a high evaporation rate of 1.96 kg·m–2·h–1 and a photothermal conversion efficiency of 91.34%. The membranes also exhibited excellent nuclide rejection of I–, Cs+, Sr2+, and Co2+ and showed a self-cleaning effect as surface salts redissolved during dark periods. This work highlights the potential of combining material design and water management for solar-driven radioactive wastewater purification.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xinming Nie,Yuanyuan Liu,Xinting Qian,Yunsheng Shang,Luqing Chen,Xinxin Shi,Mengbao Fan,Lu-Lu Qu
A high-performance aldehyde sensor is of great significance for the detection of construction machinery exhaust gas and the analysis of environmental gas. Herein, we developed a novel aerogel SERS substrate of 4-Aminothiophenol (4-ATP) decorated three-dimensional (3D) porous structure using graphene oxide (GO), Au nanoparticles (Au NPs) and MXene as precursors. Benefiting from the synergistic effect of metal conductivity of MXene, the oxygen-enriched surface of GO and the high-density of “hot spots” (Au NPs), the 3D MXene/Au/GO/4-ATP aerogel structure exhibits enhanced capture efficiency of gaseous aldehyde and plasma enhancement for in-situ aldehyde gas detection. More importantly, a hot-blowing assisted SERS detection device was designed for gaseous aldehydes sensing. The SERS detection device responses to gaseous aldehyde molecules in simulated exhaust gas, offering fast detection time, high sensitivity, excellent reproducibility, and distinct selectivity. This work provides a potential strategy for monitoring harmful emissions, and promotes the design of a multi-functional SERS platform for complex gas sensing.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Yanpei Xu,Silong Li,Shuxian Gao,Fudong Jia,Liang Guo,Jiangrong Hou,Shaowei Ma,Heya Zheng,Chuxiao Sun,Qi Wang
Prostate-specific antigen (PSA) detection is vital for early prostate cancer diagnosis, yet conventional methods suffer from sensitivity and label-dependent limitations. This study presents a surface plasmon resonance (SPR) biosensor enhanced by Ni(OH) 2 /Ti 3 C 2 T x MXene nanocomposites (NTC) for sensitive detection of total PSA (tPSA) in serum. The NTC architecture synergizes carboxyl-functionalized MXene, amplifying localized electric fields and antibody-binding sites, with Ni(OH) 2 nanoflowers that prevent MXene stacking and enhance refractive index (RI) sensitivity. Optimized via finite element modeling (50-nm Au film, 72.4 ° incident angle), the Au-NTC architecture achieved a 39.34% improvement in RI sensitivity (3064.86 nm/RIU) compared to pristine Au. Through the dual signal amplification mechanism of synergistic enhancement by nanomaterials and sandwich method with gold nanoparticles, enabled detection of tPSA in 20% serum across a wide dynamic range (0.2–160 ng/mL), fully covering the clinical risk threshold (4–10 ng/mL). The platform demonstrated an ultralow limit of detection (LOD) of 0.0361 ng/mL (0.5157 pM) and high specificity against interferons. Kinetic analysis revealed strong antigen-antibody affinity (equilibrium dissociation constant K D = 4 . 26 × 1 0 − 10 M), while batch-producible sensor chips and integrated microfluidics underscored practical applicability. This work advances label-free SPR biosensing for precision prostate cancer diagnostics, offering significant potential in point-of-care testing and early intervention strategies.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yu Fu,Yuhao Yuan,Chuanjie Zeng,Shuang Lai,Lun Yuan,Yandong Mu
Radiation-induced skin injury (RSI) remains a significant clinical challenge due to persistent oxidative stress, chronic inflammation, and impaired tissue regeneration. It is demonstrated that RSI is accompanied by dysregulation of the immune microenvironment, wherein macrophages act as key regulators of all pathological cascades. Here, we developed a dual network hydrogel (Gel/SA@MXene) through dual cross-linking via UV irradiation and calcium ions to accelerate radiation-combined wound healing. The hydrogel provided good biocompatibility, tunable mechanical properties, and controllable degradability by adjusting the composition ratio of GelMA and SA, cross-linking density, and the incorporation of MXene, where SA formed an extensive hydrogen-bonding network with MXene nanosheets to stabilize them and ensure homogeneous dispersion. The optimized hydrogel degraded and supplied MXene nanosheets, which successfully mitigated oxidative stress, promoted macrophage polarization toward the M2 phenotype, and broke the cycle of chronic inflammation. This remodeled immune microenvironment effectively alleviated oxidative damage in radiation-exposed HaCaT skin cells and supported cell migration and proliferation. In addition, in vivo experiments revealed that Gel/SA@MXene significantly ameliorated tissue inflammation and enhanced collagen deposition, thereby facilitating the healing of the skin wounds complicated by radiation injury Overall, this study highlights the potential of Gel/SA@MXene as a multifunctional platform that integrates antioxidant, immunomodulatory, and regenerative functions, effectively transforming the irradiated wound bed from a state of metabolic paralysis to one conducive to healing.
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