JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2025
·
IF 4.7
Wenjie Ma,Ru Jia,Lanlan Dong,Cijun Shuai,Wurikaixi Aiyiti,Chongxian He
Transplant-associated bacterial infections, especially the formation of bacterial biofilms, frequently lead to persistent infections and even transplant failure. Herein, a near-infrared laser-triggered nanosystem with antibacterial and anti-biofilm activities is constructed by loading S-nitrosothiols (RSNO) onto Ti 3 C 2 T x nanosheets, which are then mixed with poly-L-lactic acid (PLLA) powders to prepare porous PLLA/Ti 3 C 2 T x -SNO scaffolds. Especially, the excellent photothermal property of the scaffold is expected not only to eliminate bacterial biofilms but also to trigger RSNO molecules to in situ release nitric oxide (NO) gas under near-infrared laser irradiation. Moreover, the removal of the biofilms facilitates more NO to enter and kill the deep bacteria through nitridation damage, thus realizing the synergistic antibacterial capabilities of photothermal and NO gas therapies. The experimental results showed that the photothermal conversion efficiency of the scaffold reached 39 %. Combining with the in situ NO release, the scaffold presented excellent anti-biofilm and antibacterial activities, with antibacterial rates of 93.6 % and 94.9 % against E. coli and S. aureus , respectively. This work is expected to solve the dilemma of treating bacterial infections in deep tissues, providing reference for the clinical treatment of transplant-associated bacterial infections and even extending to the treatment of other deep refractory infections.
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高影响因子
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
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
·
IF 8.3
Tianyu Zhang,Yang Hong,Jingyang Li,Yang Li,Huiyang Zhao,Kai Cui,Wenjing Wei,Hongjun Kang,Jinzhu Wu,Wei Qin,Xiaohong Wu
The radiation resistance of Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) is of great significance when applied in aerospace. However, it is still challenging to obtain MOSFETs with excellent radiation resistance. In this work, the radiation hardened MOSFETs were realized by GdF 3 -Al 2 O 3 @Bi-Ti 3 C 2 T x /epoxy (MBAG/EP) polymer-based composite coating with function of trapped interfacial electrons. The radiation resistance of resultant packed MOSFET is significantly improved, showing the lower threshold voltage negative drift value (0.41 V) than the bare MOSFET (7.89 V). This is mainly attributed to the introduction of ultra-thin Al 2 O 3 intermediate layer between Bi and GdF 3 , which effectively tailor electron dense and distribution for an effective electron attenuation, and thus improve the radiation resistance of the MOSFET. Theoretical calculations further reveal that the packed MOSFETs present the less shifted voltage and trapped charges compared with the pristine one. This work provides an interface engineering strategy for developing radiation hardened MOSFETs.
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高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 11
·1-13
·
IF 5.3
Zhao Zhihua,Su Zijie,Lv Zhenli,Shi Pu,Jin Guixin,Wu Lan
Bi 2 S 3 /Ti 3 C 2 T x nanomaterials were successfully prepared through a simple hydrothermal method. Various methods were used for their characterization, including XRD, XPS, SEM, EDS, and BET, along with testing their gas-sensing properties. The results showed that the response value to 100 ppm ammonia at room temperature reached 107%, which was 14.1 times higher than that of pure few-layer MXene. After undergoing anti-humidity interference testing, we observed that Bi 2 S 3 /Ti 3 C 2 T x exhibited a higher response value in real-time monitoring of ammonia as humidity increased. Specifically, under 90% humidity conditions, its response value reached 1.32 times that of normal humidity conditions. This exceptional moisture resistance ensures that the sensor can maintain stability, and even exhibit superior performance, in harsh environments. Therefore, it possesses excellent selectivity, high-moisture-resistance, and long-term stability, making it significant in the field of medical and health monitoring. Graphical abstract
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Xiaosheng Du,Jinghong Qiu,Sha Deng,Zongliang Du,Xu Cheng,Haibo Wang
Organic phase change materials (PCMs) have attracted increasing attention in the solar energy utilization field for their large thermal energy storage density, appropriate phase transition temperature, and excellent chemical stability. However, the liquid leakage defect and poor solar-thermal conversion performance restrict their large-scale application. Herein, novel PCM composites with superior solar-thermal conversion efficiency, excellent form-stability, and improved thermal conductivity were successfully synthesized by introducing a dopamine-decorated MXene (Ti3C2Tx@PDA) into a poly(ethylene glycol) (PEG)-based polyurethane PCM. Ti3C2Tx@PDA, which was covalently bound to polyurethane, acted as a photon capturer and molecular heater and converted solar energy to thermal energy, whereas the PEG-based polyurethane PCM could absorb and store the generated thermal energy through solid–solid phase transition. Sunlight irradiation experiments demonstrated that the solar-thermal conversion and storage efficiency of PCM composites (up to 90.1%) were significantly improved with the introduction of the MXene Ti3C2Tx@PDA. Based on differential scanning calorimetry (DSC) analysis, PCM composites exhibited satisfactory phase change enthalpy in the range of 121.9–128.2 J/g. Moreover, the developed PCM composites possessed excellent form-stability, remarkable thermal reversibility, good thermal stability, and improved thermal conductivity. In conclusion, the synthesized PCM composites exhibited tremendous application potential in solar energy utilization field.
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高影响因子
TALANTA
·
2026
·
IF 6.7
Feier Jiang,Dongmei Liu,Guang Yang,Miaomiao Hu,Cheng Ye,Xu Sun,Hui Sun,Maofeng Zhang
An ordered PMMA@Ti 3 C 2 T x -Ag composite array SERS substrate was fabricated using PMMA microsphere templates and in-situ AgNP immobilization. • Synergistic electromagnetic and chemical enhancement generated abundant hotspots and excellent SERS uniformity (RSD < 5%). • Ultrasensitive detection was achieved for CV and 4-ATP down to 10 −9 M, and for diquat/triazophos and thiram down to 10 −8 and 10 −7 M, respectively. • The platform enabled simultaneous pesticide identification and in-situ residue analysis on blueberry and cherry tomato surfaces below EU maximum residue limits. The rapid identification and quantitative detection of pesticides on a portable device is of vital importance for food safety evaluation and human health protection. However, conventional strategies for realizing the reliable, portable and sensitive detection of target analytes are still challenging. In this work, the ordered polymethyl methacrylate (PMMA) microspheres array were employed as template to fabricate PMMA@Ti 3 C 2 T x . Silver nanoparticles (AgNPs) were then uniformly immobilized onto the composite substrate through an in-situ route, generating abundant electromagnetic hotspots. Benefiting from the synergistic electromagnetic and chemical enhancement, a high-performance PMMA@Ti 3 C 2 T x -Ag composite array SERS substrate was successfully fabricated. The prepared array substrate exhibits excellent SERS performance with good uniformity (relative standard deviation, RSD < 5%) and satisfactory stability. It achieves the detection concentration of 10 −9 M for probe molecules of crystal violet (CV) and 4-aminothiophenol (4-ATP). For pesticide detection using standard solutions, the substrate realizes trace detection of diquat and triazophos down to 10 −8 M, while the detection concentration for thiram is 10 −7 M. Taking advantage of the unique molecular fingerprint signature of SERS, the platform enables simultaneous identification of various pesticide molecules. Further practical tests were carried out to perform in-situ analysis of pesticide residues on the surfaces of blueberries and cherry tomatoes. The detectable concentrations of target pesticides are well below the maximum residue limits stipulated by the European Union, demonstrating the great potential of the SERS platform for rapid screening applications in food safety monitoring. These results indicate the promising potential of the sensing platform for rapid on-site monitoring of pesticide residues in complex food matrices. For the spiked fruit-surface experiments, diquat and triazophos were detected down to 10 −7 M, whereas thiram was detected at 10 −6 M. Download: Download high-res image (363KB) Download: Download full-size image
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高影响因子
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
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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高影响因子
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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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Liang Yin,Jinfeng Luan,Li Lv,Bin Liu,Wenbin Ren,Xiangqun Chu,Jia Wang,Zheng Lu,Pinhua Zhang,Lulu Du,Guangliang Cui
The detection of hydrogen sulfide (H2S) in exhaled breath at room temperature is essential for health monitoring and disease diagnosis. This study investigates a ZnO/Ti3C2TX nanocomposite synthesized by combining ZnO nanoparticles, prepared by a hydrothermal method, with Ti3C2TX MXene. Experimental results demonstrate that the ZnO/Ti3C2TX nanocomposite sensors exhibit excellent H2S detection performance at room temperature with high sensitivity, rapid response time, and robust recovery capability. Specifically, the ZnO/Ti3C2TX-1.0 wt % nanocomposite sensor shows a response of 85.116 at 5 ppm of H2S, which is 14-fold and 35-fold greater than that of pure ZnO and Ti3C2TX MXene, respectively. The sensor exhibits a rapid response (50 s) and recovery time (115 s) at 100 ppb of H2S. Additionally, it shows exceptional sensitivity to H2S at low concentrations, with a detection limit as low as 1 ppb. Based on the excellent sensing performance, oral exhaled gas detection demonstrates that the sensor effectively differentiates H2S levels in healthy and patient breath samples. These findings highlight the potential of the ZnO/Ti3C2TX nanocomposite in exhaled H2S detection at room temperature, offering new insights for developing ultrasensitive biogas sensors.
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高影响因子
EUROPEAN POLYMER JOURNAL
·
2023
·
IF 6
Zhanbin Feng,Guofei Feng,Xinchen Yue,Xing-Hong Zhang
Dielectric elastomers (DEs) with high actuated strains at low electric fields have been a great challenge over the past few decades. In this work, we report the preparation of poly(thioether) grafted Ti 3 C 2 T x MXene DE nanocomposites (MXeneK-FGE-BMI) with high area strain at low driving voltage (17.1 %@11.9 V/μm) by two steps: the pretreated MXene (MXeneK) initiated decarboxylative ring-opening polymerization (ROP) of furfuryl glycidyl ether (FGE) and carbonyl sulfide (COS), followed by the Diels-Alder (DA) crossslinking reaction between furan groups and bismaleimide (BMI). The grafting of poly(thioether) chains onto the MXeneK surfaces enables MXeneK well dispersed in the matrix, leading to the significant decrease of dielectric loss (tan δ, below 0.04@10 3 Hz). Low content of MXeneK (below 1.0 wt%) resulted in high ε’ (∼12.3@10 3 Hz) and low elastic modulus (Y, below 0.5 MPa). Therefore, the resultant DE nanocomposite present a high area strain of 17.1 % at a driving voltage of 11.9 V/μm, superior to the previous reports (0.7 %∼10 %@12 V/μm). This work provides a facile strategy to prepare DE nanocomposites with excellent electromechanical performances at low driving voltage.
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高影响因子
Advanced Science
·
2023
·Vol. 10
·期 18
·2300650
·
IF 15.1
You Xue,Tao Yang,Yapeng Zheng,Kang Wang,Enhui Wang,Hongyang Wang,Laipan Zhu,Zhentao Du,Hailong Wang,Kuo-Chih Chou,Xinmei Hou
Piezoelectric nanogenerator (PENG) for practical application is constrained by low output and difficult polarization. In this work, a kind of flexible PENG with high output and self-polarization is fabricated by constructing CsPbBr 3 –Ti 3 C 2 T x heterojunctions in PVDF fiber. The polarized charges rapidly migrate to the electrodes from the Ti 3 C 2 T x nanosheets by forming heterojunctions, achieving the maximum utilization of polarized charges and leading to enhanced piezoelectric output macroscopically. Optimally, PVDF/4wt%CsPbBr 3 /0.6wt%Ti 3 C 2 T x -PENG exhibits an excellent voltage output of 160 V under self-polarization conditions, which is higher than other self-polarized PENG previously. Further, the working principle and self-polarization mechanism are uncovered by calculating the interfacial charge and electric field using first-principles calculation. In addition, PVDF/4wt%CsPbBr 3 /0.6wt%Ti 3 C 2 T x -PENG exhibits better water and thermal stability attributed to the protection of PVDF. It is also evaluated in practice by harvesting the energy from human palm taps and successfully lighting up 150 LEDs and an electronic watch. This work presents a new idea of design for high-performance self-polarization PENG.
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高影响因子
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