Surfaces and Interfaces
·
2024
·
IF 5.7
Donghai Wu,Hanyu Fang,Guanghua Lu,Runren Jiang,Jianchao Liu
In this study, four pharmaceutical compounds including sulfamethoxazole (SMX), oxytetracycline (OTC), ciprofloxacin (CIP), and ibuprofen (IBU) with different functional groups and p K a , were selected as representative pollutants to systematically investigate the Pharmaceutical and Personal Care Products (PPCPs) adsorption on a nanomaterial Ti 3 C 2 T x MXene in simulated solution and real surface water . The results show that Ti 3 C 2 T x was an excellent PPCPs adsorbent, but the process was affected by the characteristics of pollutants pronouncedly, the obtained maximum adsorption capacity were OTC (210.97 mg/g) > IBU (185.05 mg/g) > CIP (160.60 mg/g) > SMX (68.12 mg/g). Specially, the charge screen effect caused Ti 3 C 2 T x precipitation during CIP adsorption. The response surface methodology analysis indicates that initial solution pH (3–11) had significant effects, while the influence of humic acid (0–10 mg/L) or sodium chloride (0–10 mg/L) was limited, and the interactions between these factors was slight. In the co-adsorption process, the competitive effects reduced the adsorption of SMX and IBU, however, the enhanced positive ionization and the possible electrostatic repulsive interactions promoted that of CIP and OTC. In real surface water, although the influence of natural organic matters was negligible, the preferential adsorption of background metal ions such as aluminum and calcium ions reduced the adsorption capacity of the selected PPCPs by approximately 29.9 % to 88.4 %. Moreover, the adsorbent characterization conjoined with performance examination imply that electrostatic attraction dominated the Ti 3 C 2 T x adsorption of PPCPs, and hydrogen bonding interactions as well as surface complexation might also contributed. These observations suggest that Ti 3 C 2 T x MXene has the potential for use as adsorbent to eliminate aqueous PPCPs, nevertheless, the interference of co-existing metal ions and the stability of adsorbent were also noteworthy.
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ANALYTICAL CHEMISTRY
·
2024
·
IF 6.7
Fan Chen,Jinhao Wang,Lijuan Chen,Haoliang Lin,Dongxue Han,Yu Bao,Wei Wang,Li Niu
Wearable, noninvasive sensors enable the continuous monitoring of metabolites in sweat and provide clinical information related to an individual’s health and disease states. Uric acid (UA) is a key indicator highly associated with gout, hyperuricaemia, hypertension, kidney disease, and Lesch–Nyhan syndrome. However, the detection of UA levels typically relies on invasive blood tests. Therefore, developing a wearable device for noninvasive monitoring of UA concentrations in sweat could facilitate real-time personalized disease prevention. Here, we introduce 1,3,6,8-pyrene tetrasulfonic acid sodium salt (PyTS) as a bifunctional molecule functionalized with Ti3C2Tx via π–π conjugation to design nonenzymatic wearable sensors for sensitive and selective detection of UA concentration in human sweat. PyTS@Ti3C2Tx provides many oxidation–reduction active groups to enhance the electrocatalytic ability of the UA oxidation reaction. The PyTS@Ti3C2Tx-based electrochemical sensor demonstrates highly sensitive detection of UA in the concentration range of 5 μM–100 μM, exhibiting a lower detection limit of 0.48 μM compared to the uricase-based sensor (0.84 μM). In volunteers, the PyTS@Ti3C2Tx-based wearable sensor is integrated with flexible microfluidic sweat sampling and wireless electronics to enable real-time monitoring of UA levels during aerobic exercise. Simultaneously, it allows for comparison of blood UA levels via a commercial UA analyzer. Herein, this study provides a promising electrocatalyst strategy for nonenzymatic electrochemical UA sensor, enabling noninvasive real-time monitoring of UA levels in human sweat and personalized disease prevention.
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PubMed
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COMPOSITES COMMUNICATIONS
·
2024
·
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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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Miao Yuan,Saidan Wang,Hongxia Du,Yating Sui,Xiangjing Zhang,Song Zhao,Qiushi Li,Shaojie Liu,Xuteng Xing,Erjun Tang
Two-dimensional Ti 3 C 2 T x MXene, with a large specific surface area, high chemical stability and excellent barrier properties, has become a promising of anti-corrosion filler in organic coatings. However, the poor dispersion and compatibility in organic coatings restrict its efficient application. To this end, L-histidine (L-His) corrosion inhibitor was grafted on the 3-aminopropyl triethoxysilane (APTES) functionalized Ti 3 C 2 T x MXene surface, under the electrostatic attraction between the carboxylate and protonated aminopropyl groups. The obtained APTES-Ti 3 C 2 T x MXene@L-His cannot only accelerate the dispersion of Ti 3 C 2 T x MXene filler, but also greatly promote the anti-corrosion property and service lifetime of coatings through combining the physical shielding effect of MXene laminate structure with active anti-corrosion function of L-His corrosion inhibitor. Results show that amino-functionalized Ti 3 C 2 T x MXene can maintain homogeneous in epoxy resin for 300 h, enhancing its dispersion in epoxy coating. Moreover, APTES-Ti 3 C 2 T x MXene@L-His composite can achieve the continuous release of L-His for 3000 min, and additional acid-base dual response property, the releasing rate of L-His is significantly accelerated in acidic or alkaline solutions. The total loading amount of L-His in APTES-Ti 3 C 2 T x MXene@L-His composite is about 3 %. Furthermore, the practical composite coating containing APTES-Ti 3 C 2 T x MXene@L-His also exhibits the excellent anti-corrosion and certain self-healing properties, such as its |Z 0.01 Hz| value remains above 10 10 Ω·cm 2 during the 40 d immersing in 3.5 NaCl solution, which is 3 orders of magnitude higher than that of pure epoxy coating. This work extends the great significance for Ti 3 C 2 T x MXene based composite coatings application of in the field of anti-corrosion.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Haonan Zhao,Cuilian Wen,Lijin Luo,Jiamin Qian,Xi Lin,Yang Xu,Zhongzhi Tang,Xinyi Wang,Rongtao Zheng,Baisheng Sa
The integration of osteogenic and antibacterial properties into biomaterials is crucial for addressing infected bone defects. Mesoporous bioactive glass (MBG) is widely recognized for its bioactivity and tunable porous structure, making it a promising candidate for bone repair. However, conventional MBG lacks inherent antibacterial properties, limiting its application in postoperative infection management. In this study, we have successfully developed Ti 3 C 2 T x MXene modified MBG (Ti 3 C 2 T x /MBG) nanocomposites with osteogenic and antibacterial properties. The results reveal that the incorporation of Ti 3 C 2 T x MXene significantly enhances the mineralization capability, as evidenced by accelerated hydroxyapatite formation in simulated body fluid within 7 days compared to pure MBG. Notably, the nanocomposite exhibits no cytotoxicity toward MC3T3-E1 cells and markedly upregulates key osteogenic genes, including Alp, Runx2, Col1a1, Opn, and Ocn . Moreover, Ti 3 C 2 T x /MBG nanocomposite displays remarkable photothermal antibacterial efficacy, achieving 99.6% inhibition of Staphylococcus aureus under near-infrared irradiation. This study proposes a versatile strategy to synthesize multifunctional MXene/MBG nanocomposites with enhanced apatite mineralization, osteogenic gene expression, and antibacterial activity, demonstrating great potential for bone tissue engineering and other biomedical applications.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yang Zhang,Kangxin Qi,Xiangxiang Pi,Qingqing Tang,Qingquan Xue,Wei Chen,Diwei Gu,Jian Xu,Shenao Zhang,Yusen Wang,Yunxia Liang,Bin Sun,Wangyang Lu
Developing miniaturization, adaptability and weavability wire-shaped supercapacitor (F-SC) with admirable electrochemical performance and exceptional mechanical properties, has been a pivotal issue for wearable system. Here, we fabricated flexible F-SCs assembled by heterogeneous polyaniline (PANI)/bacterial cellulose (BC)/Ti 3 C 2 T x (PBT) hybrid fiber. BC nanofibers , as both reinforcement and spacer, can link with the adjacent Ti 3 C 2 T x flakes together to enhance the mechanical properties and prevent the restacking of Ti 3 C 2 T x flakes to accelerate the ion diffusion. And the PANI nanoparticle plays a crucial role in providing more active sites to improve the electrochemical performance. Besides, the continuous Ti 3 C 2 T x sheet arrangement in hybrid fiber guarantees favorable conductivity and forms a smooth pathway for electron migration. Thus, the PBT fiber shows high mechanical property (123.42 MPa), mass capacitance of 337 F g −1 in 1 A g −1 , superior rate performance (129 F g −1 at 10 A g −1 ) and exceptional cycling stability (84.1 % capacitance retention after 10,000 cycling). Moreover, the solid-state symmetric F-SC displays capacitance of 259 F g −1 , 86 % capacitance retention after 10,000 cycles, maximum energy density of 7.28 Wh kg −1 and favorable mechanical endurance, which displays a promising future in smart wearable system.
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Nano-Micro Letters
·
2021
·Vol. 13
·期 1
·1-13
·
IF 16.419
Qu Danyao,Jian Yingying,Guo Lihao,Su Chen,Tang Ning,Zhang Xingmao,Hu Wenwen,Wang Zheng,Zhao Zhenhuan,Zhong Peng,Li Peipei,Du Tao,Haick Hossam,Wu Weiwei
An organic solvent-assisted intercalation and collection (OAIC) approach for preparing Ti 3 C 2 T x (MXene) was developed.
The features of OAIC approach are the low requirement for facility, gram-level preparation with remarkable yield and easy control over the dimension of Ti 3 C 2 T x flakes.
The Ti 3 C 2 T x flakes prepared by OAIC approach showed the outstanding capacitive and rate performance.
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JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Hongxin Tan,Jingren Gou,Xin Zhang,Li Ding,Haihui Wang
The electromagnetic interference (EMI) shielding abilities of MXene-based conductive nanocomposites are promising for ensuring the steady operation of electronic equipment and protecting people from electromagnetic radiation. The development of comprehensive membranes that satisfy all the essential requirements of excellent EMI shielding and infrared (IR) stealth performance remains a significant issue, despite the high EMI shielding capabilities of MXene-based composite membranes . Here, we report a sandwich-structured Ti 3 C 2 T x -MXene/reduced-graphene-oxide (MrG) membrane with high conductivities and abundant interior blowholes for high-performance EMI shielding and IR stealth. Taking advantage of the continuously conductive routes and distinctive porous structures, an 18-μm-thickness MrG membrane shows a high EMI shielding efficiency (EMI SE) of 89.1 dB and a satisfactory absolute EMI SE ( S S E /t) of up to 55282.8 d B ⋅ c m 2 ⋅ g − 1 , which is the best result for MXene-based nanocomposites with similar thickness. Moreover, the MrG membrane also exhibits superior thermal camouflage ability for objects in low-temperature circumstances (like winter) and high-temperature cases (like summer), demonstrating the great promise as high-performance EMI shielding membranes for IR stealth, security protection, and counter-surveillance.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Qiyue Jia,Hongyu Gao,Wenling Du,Jiaxin Bai,Mei Li,Jiansheng Liu,Zhanli Chai
Expediting the separation and transfer of photogenerated carriers is crucial for plasmonic materials to improve the performance of photocatalysts. However, it remains a significant challenge to strengthen the local surface plasma resonance (LSPR) through the modulation of surface functional groups. Herein, Ti 3 C 2 T x MXene is combined with two typical semiconductor materials to form Ti 3 C 2 T x /CdS (TCS) with dominated surface O x groups and Ti 3 C 2 T x /C 3 N 4 (TCN) with surface-terminated F x species. The obtained TCS composite shows a higher photocatalytic performance (96.7 %) than TCN (86.7 %) and the corresponding bare catalysts in the degradation of tetracycline within 60 min under visible-light irradiation. Moreover, the degradation rate of Ti 3 C 2 T x /CdS composite decreases by only 2.3 % after 4 cycles photocatalytic process, which is more stable than Ti 3 C 2 T x /C 3 N 4 (3.3 %) and CdS (39.3 %). The improved photocatalytic activity and stability mainly result from the enhanced LSPR effect of Ti 3 C 2 T x MXene. In particular, the better performance of TCS compared to TCN indicates that the LSPR effect is highly related to the surface-terminated [O]/[F] ratio. These results directly provide a strategy to enhance the electric field dynamics of MXene materials for improving photocatalytic performance.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jiamin Xiao,Wei Wan,Jiaxin He,Junrong Luo,Yushuang Wang,Jie Gu,Tingna Xiao,Ruqing Wan,Ye Chen,Yuejun Ouyang
The rapid advancement of flexible electronics is driving an urgent demand for polymer-based composites that synergistically possess high dielectric performance and superior mechanical properties. This study presents Ti 3 C 2 T x MXene/millable polyurethane (MPU) composite films fabricated via a combined mixing and hot-pressing approach, with a systematic investigation into the effects of MXene content on their properties. The dielectric constant increased linearly with filler content, attaining a value of 11.71 at 1 kHz for the composite with 12 wt% filler. An optimal balance was achieved at 8 wt% loading, yielding a dielectric constant of 11.13 (a 17.3 % enhancement over the neat MPU matrix value of 9.49) coupled with a low dielectric loss of 0.037. The breakdown strength peaked at 69.5 kV/mm for the 6 wt% composite (a 21.5 % improvement) and remained high at 60.2 kV/mm for the 8 wt% composite (a 5.2 % increase). Mechanical properties were significantly enhanced, with the elongation at break reaching a maximum of 682.7 % (94.8 % increase) and 614.1 % (75.3 % increase) at 10 wt% and 8 wt% loadings, respectively. Thermal stability was also enhanced, as evidenced by a 14.4 °C increase in the temperature for 5 % weight loss (to 276.1 °C) for the 10 wt% composite. Microstructural analysis revealed that the uniform dispersion of MXene enhanced interfacial polarization, the hot-pressing-induced orientation of lamellar planes elongated the electrical tree path, and a hydrogen-bonding network formed between the surface functional groups (–O, –OH) of MXene and MPU synergistically improved interfacial stress transfer and thermal stability. This work demonstrates the synergistic optimization of electrical, mechanical, and thermal properties via gradient filler content control, offering a novel strategy for designing high-performance flexible electronic materials.
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JOURNAL OF FOOD SCIENCE
·
2025
·Vol. 90
·期 9
·e70571
·
IF 3.4
Xiaoya Meng,Zhongyu Li,Zili Xia,Dongdong Chen,Zijing Yuan,Yang Han,Heng Zhang,Xia Sun,Jun Seop Lee,Usmanova Surayo Rakhmatzhanovna,Bobokalonov Jamshed Tolehmurodovich,Wenping Zhao
An electrochemical aptasensor based on Ti 3 C 2 T x (MXene) and cDNA-PAA was established for sensitive detection of aflatoxin B1 (AFB1) in peanuts. The high specific surface area of Ti 3 C 2 T x (MXene) contributed to improve electrochemical efficiency and enhancing sensor stability which were characterized by the Randles−Sevcik equation. The self-made polyacrylic acid (PAA) nanogel was added with aptamer complementary chain (cDNA) to form cDNA-PAA nano gel composite, which could realize the synergistic amplification of the difference between the electrochemical signals before and after the addition of AFB1. The sensing effect of cDNA-PAA was validated using DPV. Methylene blue (MB) was modified at the proximal 3′ termini of the aptamer (Apt-MB), meanwhile AuNPs was used to immobilize Apt-MB and improve the efficiency of electrochemical reactions. The competition between AFB1 and cDNA-PAA combined with Apt MB resulted in a significant change in the electrochemical signal current. In addition, the constructed electrochemical aptasensor had a lower detection limit of 1.0 × 10 −3 ng/L for AFB1 under optimal detection conditions, and a detection range of 1 to 1000 ng/L. Moreover, peanuts with different concentrations of AFB1 were used as actual detection samples. Through the constructed sensor detection, the spiked recovery rates within the spiking range of 50 to 500 ng/mL were 97.76% to 101.84% ( n = 3).
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高影响因子
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