Polymers
·
2026
·Vol. 18
·期 6
·716
·
IF 5.8
Qichang Guo,Chuanbo Liu,Juncheng Lv,Shutian Liu
The drive systems of new energy vehicles, which employ high-speed motors and low-viscosity lubricants, often subject motor bearings to high-temperature and oil-starved conditions. This can lead to the deformation of polymer bearing cages, resulting in abnormal vibration and noise. In this study, polyimide/molybdenum disulfide (PI/MoS2) composites were prepared, and their thermal stability was characterized using a dynamic mechanical analysis (DMA). High-temperature friction and wear tests against ceramic balls were conducted on a multifunctional tribometer. The wear behavior and surface element distribution were examined by laser confocal microscopy (LCSM), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS). Results indicate that the PI-MoS2composites effectively mitigate surface contact deformation with rising temperatures, reducing the wear loss by around 30% compared to pure PI. This improvement is attributed to the enhanced heat resistance from MoS2and the formation of a lubricating film during friction. The findings provide guidance for selecting and designing composite materials for high-speed bearing cages.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·Vol. 49
·期 26
·11412-11422
·
IF 2.5
Yujie Wang,Panpan Ding,Fan Zhang,Minglei Wang,Anqi Ju
Stannous sulfide (SnS) with a unique two-dimensional layered structure is a potential anode material for advanced lithium-ion batteries due to its large interlayer spacing (4.04 Å) and high theoretical specific capacity (1138 mA h g−1). However, large volume expansion and low conductivity lead to poor cycle performance of SnS. In this work, MoS2 modified SnS@ hollow multichannel carbon fibers (MoS2/SnS@HMCFs) were prepared by an electrospinning technique and a hydrothermal method. The resulting material has a unique hollow structure with a heterojunction formed between SnS and MoS2. It not only mitigates the volume change of SnS in the lithiation/delithiation process but also improves the interfacial transport of Li+ and enhances the structural stability of the electrode materials. MoS2/SnS@HMCFs can maintain a reversible specific capacity of 610.1 mA h g−1 (at 0.5 A g−1) after 500 cycles. On this basis, B and P elements were doped into MoS2/SnS@HMCFs to generate lattice defects and accelerate electron transport and further ameliorate the electrical conductivity (from 5.34 S cm−1 to 9.58 S cm−1). In light of the above advantages, the reversible specific capacity of MoS2/SnS@BP-HMCFs is increased to 854.4 mA h g−1 (0.5 A g−1) after 500 cycles compared with MoS2/SnS@HMCFs. Therefore, an anode with a unique hollow structure, heterogeneous structural framework, and doped heteroatoms was constructed, providing a method for the preparation of anode materials tailored for high-performance lithium-ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Engineering Materials
·
2025
·
IF 3.5
Mengzhu Xiao,Yujia Wu,Wanzhen Li,Jun Wang,Weiwei Zhang,Zuchun Zhao,Fei Ge
The overuse of antibiotics leads to bacterial resistance, which involves complex and diverse mechanisms, among which the activation of drug efflux pumps is a key contributing factor. Excessive accumulation of reactive oxygen species (ROS) in inflamed wound tissues further exacerbates this issue by triggering efflux pump activation. To address bacterial resistance, this study aimed to mitigate ROS accumulation, thereby inhibiting efflux pump expression and enhancing antibacterial efficacy. Researchers synthesized MoS2-based nanocomposites (MoS2/ZnO/Cur designated as MZCs) loaded with ZnO and Cur into cross-linked structures using a hydrothermal method and combined them with photothermal therapy (PTT). To enhance functionality, a ROS-responsive hydrogel was developed by conjugating CGG with a ROS-responsive linker (TPA) and integrating the MZCs, yielding MZC@CGG-TPA. Electron microscopy revealed the internal structure of the hydrogel. Antibacterial assays demonstrated that MZC@CGG-TPA achieved inhibition rates exceeding 95% against multidrug-resistant (MDR) Escherichia coli and Staphylococcus aureus, with biofilm clearance rates surpassing 90%. Photothermal performance testing indicated a photothermal conversion efficiency of 47%. Transcriptomic analysis revealed that MZC@CGG-TPA suppressed the expression of channel protein-related genes, downregulated the key regulator gene marA, and inhibited drug efflux pump activity. This enhanced the retention of antibacterial agents within bacterial cells and improved bactericidal efficacy. Under laser irradiation, the MZC@CGG-TPA hydrogel dressing significantly enhanced anti-infection efficacy and accelerated wound healing in an in vivo wound infection model. These findings present an approach for designing advanced nanosystems to effectively combat MDR bacteria.
✓ 已验证
产品关联
DOI
高影响因子
Green Energy & Environment
·
2020
·
IF 6.395
Huanran Li,Xiaobo Han,Suyu Jiang,Lili Zhang,Wei Ma,Renzhi Ma,Zhen Zhou
The layered materials have demonstrated great prospects as cost-effective substitutes for precious electrocatalysts in hydrogen evolution reaction. Research efforts have been devoted to synthesizing highly conductive MoS 2 with the substantial cardinal plane and edge active sites. Here, we successfully synthesized a hierarchical 1T/2H–MoS 2 with sodium ion insertion via a facile hydrothermal method. The contents of the 1T-phase can be flexibly controlled by different hydrothermal temperatures (160 ∼ 200 °C). And the modified uniformly dispersed 1T/2H–MoS 2 nanospheres with different d spacings were designed to enhance the electrocatalytic efficiency by adding SiO 2 and through the ion exchange process of NaOH and HF solution. The as-synthesized Na + intercalated 1T-MoS 2 nanosphere with an expanded interlayer of 0.95 nm obtained at 160 °C exhibits a prominent electrocatalytic performance of hydrogen evolution reaction with a comparable overpotential of 255 mV and a remarkably small Tafel slope of 44 mV/decade. Therefore, this study provides a facile and controllable strategy to yield interlayer-expanded 1T-MoS 2 nanospheres, making it a potentially competitive hydrogen evolution catalyst for the hydrogen cell.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Tingting Liang,Haolong Sun,Tingting Zhu,Daobo Tian,Sen Liang,Xiaoshan Wang
Two-dimensional (2D) MoS2 demonstrates significant potential for applications in flexible electronic sensing devices due to its unique physical and chemical properties and ultrathin layered structure. Metallic 1T phase MoS2 is inherently metastable and tends to transform into the thermodynamically stable semiconducting 2H phase. Atomic doping can regulate the crystal phase of the MoS2 and carrier concentration, and enhance the material stability. In this study, 2D metallic Sn-doped MoS2 (SnxMo1−xS2) nanosheets were successfully synthesized via a hydrothermal method. The film resistance of SnxMo1−xS2 can be precisely controlled to change by two orders of magnitude through the precise regulation of the Sn doping concentration. The Sn0.4Mo0.6S2-based temperature sensor displayed a negative temperature coefficient of resistance of −0.020 °C−1, exhibiting an 82% improvement compared with 1T MoS2. Meanwhile, the temperature-sensing performance of Sn0.4Mo0.6S2 nanosheets is superior to that of reported doped and un-doped TMDs and their composites. In addition, the TCR remained stable under different bending conditions owing to the special nanosheet structure. Therefore, the Sn0.4Mo0.6S2 sensor showed promising applicability for flexible and wearable human body temperature monitoring and activity tracking devices.
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2016
·
IF 3.719
Xiao Ding,Ying Huang,Suping Li,Na Zhang,Jianguo Wang
High-performance electromagnetic absorbers with wide absorption band, strong absorption and lightweight are necessary for industry and military application. To obtain the desired materials, two-dimensional (2D) atomic layers structure nanosheets , such as graphene and graphene-like, were adopted due to its unique structure and properties. Here, 3D architecture reduced graphene oxide-molybdenum disulfide (RGO-MoS 2 ) composite was prepared by one-pot hydrothermal reaction . MoS 2 generated on graphene oxide intercalation through hydrothermal process and rGO is obtained in the meanwhile. 3D architecture RGO-MoS 2 composite can effectively prevent two-dimensional nanosheets re-stacked and can be applied in electromagnetic wave absorption field. In this paper, composites consist of RGO and various MoS 2 were prepared and their electromagnetic performances were investigated for the first time. Maximum absorption bandwidth (R L < −10 dB) is 5.92 GHz with thickness of 2.5 mm. We may reasonably conclude that RGO-MoS 2 composite can serve as excellent light-weight electromagnetic wave absorbers and can be widely used in practice.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiaoqiang Fan,Xiaofeng Wei,Yushan He,Zhuang Zhao,Kaiyue Lin,Minhao Zhu
A crucial prerequisite for obtaining high performance interface lubrication is to regulate the composition and structure of thickener for grease, confronting fatal friction and loss issues in significant equipment manufacturing industrial clusters. Here, a structural defect-mediated transplantation of l -cysteine onto MoS 2 nanosheets was outlined, utilizing mechanical stress induction and mercaptan chemical guidance technology to fully exploit the S vacancies and active Mo atom conjugation. A new MoS 2 functionalized lithium complex thickener (CLT/MoS 2 ) was constructed with eutectic hydrogen-bond thickening system. DFT calculation confirmed that MoS 2 -NH 2 reacted with the carboxyl located at dodecyl stearic acid via dehydration condensation. The regulated-grease using CLT/MoS 2 as thickener in synthetic oil significantly reduced the friction and wear, owing to the formation of complex hydrogen-bond thickening network and induced transition of lubrication state as well as the formation of MoS 2 -based tribo-chemical films. This research introduces a novel approach to the creation of high-performance grease by deploying functional thickener to weaken the wear hazards.
研究领域:
材料科学
·
界面润滑
·
机械工程
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 6
·1743-1754
·
IF 1.6
Zhu Kaihao,Xian Han,Peng Lin,Wang Shuiyun,Chen Chunning,Liu Jinxiang
A molybdenum disulfide/biochar (MoS 2 /BC) composite was synthesised by a facile hydrothermal process and used for the adsorption of U(VI) from aqueous solution through batch experiments. Results showed that MoS 2 /BC exhibit a saturated adsorption capacity of 451.3 mg/g at pH = 5, t = 60 min, T = 298 K, M/V = 0.02 g/L, C U(VI) = 10 mg/L, which was higher than that of MoS 2 and biochar. The process of MoS 2 /BC for U(VI) adsorption was better simulated via the pseudo-second-order kinetic model ( R 2 = 0.999) and Langmuir isotherm model ( R 2 = 0.999). The adsorption mechanism of U(VI) includes chemical adsorption, electrostatic attraction, surface complexation of oxygen-containing functional groups, cation- π bond and coordination of S group. After five adsorption–desorption experiments, the elimination rate remained above 80%.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Lianqing Yu,Wenjing Xie,Xiaomeng Ji,Yaping Zhang,Haifeng Zhu
The availability of low-cost precious metal-free photocatalysts is critical for sustainable and large-scale hydrogen production. Constructing heterojunctions is considered as an effective strategy to enhance the transfer/separation of photo-induced charges. Nanoflower structures of ZnCdS can significantly enhance light absorption and increase the specific surface area available for reactions involving photo-generated carriers. Herein, MoS 2 are attached to ZnCdS nanoflowers through electrostatic adsorption, forming a ZnCdS-MoS 2 composite photocatalyst for hydrogen evolution reaction (HER). Under visible light irradiation, the ZCS-MoS 2 -8 % photocatalyst demonstrates an impressive photocatalytic HER rate of 42.07 mmol·h −1 ·g −1 , which is 5.8 times higher than that of the pure ZnCdS photocatalyst (outperforming many reported results). The MoS 2 nanocrystals greatly benefit the transfer of photoinduced electrons to ZnCdS for proton reduction and facilitate the transfer of holes for water oxidation. The constructed ZnCdS-MoS 2 photocatalyst for hydrogen evolution shows promising chemical and economic value.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Jiamei Liu,Kaida Lu,Fucheng Gao,Li Zhao,Hui Li,Yanyan Jiang
Due to its excellent photothermal performance, MoS 2 is more and more widely used in cancer treatment. In this study, a novel MoS 2 composite nanosheets material with lamellar structure and good water solubility (BBPL-MoS 2 -LP) was synthesized, which had high photothermal conversion efficiency and good biocompatibility. The drug loading efficiency of doxorubicin (DOX) on the composite nanosheets reached 34.43%. Compared with the drug release rate of 15% at pH 7.0, the release degree of DOX was higher at a slightly acidic environment of pH 5.5, reaching 30%. Under the irradiation of near infrared laser (NIR), the drug release was significantly enhanced, indicating that the composite material can be used as a dual response system. The release of DOX would be controlled by pH and near infrared laser (NIR) irradiation. It was also found that BBPL-MoS 2 -LP could effectively penetrate cell membrane under the endocytosis mechanism mediated by biotin receptor and release drugs in HeLa cells. Cytotoxicity and apoptosis experiments showed that BBPL-MoS 2 -LP had better ability to kill HeLa cells than single drug or photothermal irradiation alone. The as-prepared multifunctional composite nanosheets in this study has great potential in effective drug delivery and photothermal chemotherapy for tumor treatment.
研究领域:
癌症治疗
·
纳米技术
·
药物递送系统
·
光热治疗
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2020
·
IF 4.019
Waqar Uddin,Sajid ur Rehman,Muhammad Adnan Aslam,Shafiq ur Rehman,Mingzai Wu,Manzhou Zhu
Impedance matching has a key role in strong microwave absorption. To achieve the perfect impedance matching and enhanced interface dielectric relaxation, nickel-doped rGO@MoS 2 composite has been prepared. The complex permittivity and complex permeability of rGO@Ni-MoS 2 show significant improvement by the combination of the high magnetocrystalline anisotropy of Ni metal with highly conductive reduced graphene oxide, leading to remarkable microwave absorption. The prepared rGO@Ni-MoS 2 achieved maximum microwave absorption of −40 dB at 2 mm thickness. The control samples of MoS 2 , Ni-MoS 2 and rGO@MoS 2 indicate that micro-cluster of MoS 2 and Ni doping is indeed helpful to improve the performance of rGO@Ni-MoS 2 . The study provides a pathway for practical applications of microwave absorption materials in terms of impedance matching.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Chenlu Li,Yuanyuan Yang,De Wang,Yongli Wang,Shixuan Zhu,Chaoqi Zhang,Huatang Cao,Yue Du,Zhenyu He,Yinyu Xiang,Junsheng Li
The practical application of high-energy-density potassium metal batteries (KMBs) is currently hindered by severe safety hazards derived from dendritic growth and the energy-diluting nature of electrochemically inactive components. Here we report a synergistic multi-functional strategy to construct an active separator (MoS 2 /PI), comprising a robust polyimide (PI) nanofiber skeleton and a kinetic-regulating MoS 2 coating. Corroborated by theoretical simulations and experimental characterizations, the potassiophilic MoS 2 layer effectively modulates the local electric field and minimizes the nucleation barrier, thereby orchestrating a uniform K + flux for dendrite-free deposition. Distinguishing this work from conventional inert barriers, the proposed design activates the separator into an energy-boosting component. Both the accessible carbonyl sites in the PI backbone and the MoS 2 coating participate in reversible potassiation. They contribute individual specific capacities of ∼7.0% and ∼21.2% relative to the KPB cathode, respectively, achieving a total capacity enhancement of ∼28.2%. Benefiting from this dual-active mechanism, the K||K symmetric cells exhibit ultra-stable cycling for over 4000 h. Potassium Prussian Blue (KPB)||K full cells equipped with the MoS 2 /PI separator deliver a superior capacity of 93.1 mAh g -1 , significantly outperforming those using commercial PP (69.3 mAh g -1 ) and GF (72.6 mAh g -1 ) separators. The device also demonstrates exceptional durability by maintaining 80.7% capacity after 1000 cycles, corresponding to a stable lifespan of 3270 h. This study validates the active separator strategy as a critical pathway for developing next-generation high-energy-density alkali metal batteries.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）