Materials Today Communications
·
2025
·
IF 4.5
Guoqing Wang,Tianqiang Yin,Tao Yang,Jiang Zhao,Yuyan Zhang,Juan Li,Gai Zhao
MoS 2 coatings are essential solid lubricants for aerospace applications, yet their temperature-dependent performance remains incompletely understood. This work systematically investigates the tribological behavior of MoS₂ coatings on copper substrates from 250 to 400 K through integrated experimental and molecular dynamics (MD) approaches. High-precision ball-on-disk tests reveal the friction coefficient and wear rate increase by 42 % and 135 % respectively with rising temperature. Complementary MD simulations employing Stillinger-Weber and EAM potentials demonstrate that elevated temperatures enhance atomic mobility, increasing interfacial von Mises stresses by 30 % and activating new slip mechanisms. Energy analysis confirms thermal effects dominate high-temperature friction behavior. These findings provide atomic-scale insights into the wear mechanisms of MoS₂ coatings under thermal loads, offering fundamental guidance for designing more durable solid lubricants in variable-temperature environments. The combined experimental-simulation methodology establishes a robust framework for studying temperature-dependent tribological phenomena in 2D materials.
研究领域:
材料科学
·
摩擦学
·
计算模拟
✓ 已验证
产品关联
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2025
·
IF 6.9
Renjie Ji,Xiaorui Li,Yonghong Liu,Hui Jin,Lixin Wang,Hao Sun,Shuo Liu,Xinlei Wu,Chao Zheng,Runsheng Li,Xiaopeng Li
A superamphiphobic microporous array surface was prepared for the first time by adding diamagnetic MoS₂ particles in the process of magnetic field-assisted jet electrodeposition in this paper. The diamagnetic MoS₂ particles were added to the electrodeposition solution. Then, the edges of MoS₂ provided preferential nucleation and deposition sites, and thus they were codeposited on the substrate surface with Ni²⁺ and Fe²⁺. With a magnetic field, the magnetization effect made the microstructures with the same magnetic pole repel each other and they were connected by the MoS₂ to form micropores. Finally, the superamphiphobic effect was achieved through low surface energy modification. Experiments showed that when the concentration of MoS₂ was 6 g/L and the magnetic field intensity was 50 mT, a Ni-Fe-MoS₂ surface with a longitudinal “olive-shaped” microporous structure could be prepared on the substrate. The contact angles of the deposition layer surface to water and oil were 160.87° and 153.92°. In addition, the surface of the deposition layer had good friction performance. The wear debris generated after friction and wear filled the gaps in the hole structure, which leveled the surface of the deposition layer. Moreover, the wear debris produced rolling friction during friction and wear, reducing the dry friction coefficient of the deposition layer surface to as low as 0.153, and the weight-loss rate after friction and wear was only 0.05 %. This paper provided a method for forming a superamphiphobic microstructure on the surface of the deposition layer under the coupling effect of diamagnetic MoS₂ and a magnetic field, which was of great significance for the efficient and rapid preparation of superamphiphobic surfaces with a low friction coefficient.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2025
·
IF 3.2
Xiang Jincheng,Zhang Zhengxin,Li Xiang,Yang Li,Guo Shenghui,Xia Yi
The detection of nitrogen dioxide (NO₂) at room temperature is crucial for environmental monitoring and public health, but achieving high sensitivity and selectivity remains a challenge. In this study, we developed an In₂O₃/MoS₂ gas sensor via the electrostatic self-assembly method for NO₂ sensing. Owing to the addition of MoS 2 , the composite sensitive materials obtained an increased the specific surface area and improved charge transfer ability. Therefore, the In₂O₃/MoS₂ compsites exhibited enhanced NO₂ sensing performance compared to the pure In₂O₃ nanoparticles.
研究领域:
材料科学
·
环境科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS
·
2025
·Vol. 25
·期 9
·2734
·
IF 3.5
Ting Liang,Yelin Qi,Shuya Cao,Rui Yan,Jin Gu,Yadong Liu
A Pt@CeLaCoNiOx/Co@SnO2laminated MOS sensor was prepared using Co@SnO2as the gas-sensitive film material and Pt@CeLaCoNiOx as the catalytic film material. The sensor was verified to exhibit good sensing performances for dimethyl methylphosphonate, a simulant of Sarin, under a temperature modulation, and characteristic peaks appeared in the resistance response curves only for dimethyl methylphosphonate. The Article Swarm Optimization-Backpropagation Neural Network had a good ability to identify the resistance response data of dimethyl methylphosphonate. The identification accuracy increased as the concentration of dimethyl methylphosphonate increased. This scheme can effectively identify whether the test gas contained dimethyl methylphosphonate or not, which provided a reference for achieving the high selectivity of the MOS sensor for Sarin.
研究领域:
化学传感
·
神经网络应用
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENZYME AND MICROBIAL TECHNOLOGY
·
2015
·
IF 2.322
Haoyu Zang,Shanshan Xie,Huijun Wu,Weiduo Wang,Xiankun Shao,Liming Wu,Faheem Uddin Rajer,Xuewen Gao
A novel thermostable mannanase from a newly isolated Bacillus pumilus GBSW19 has been identified, expressed, purified and characterized. The enzyme shows a structure comprising a 28 amino acid signal peptide, a glycoside hydrolase family 5 (GH5) catalytic domain and no carbohydrate-binding module. The recombinant mannanase has molecular weight of 45 kDa with an optimal pH around 6.5 and is stable in the range from pH 5–11. Meanwhile, the optimal temperature is around 65 °C, and it retains 50% relative activity at 60 °C for 12 h. In addition, the purified enzyme can be activated by several ions and organic solvents and is resistant to detergents. Bpman5 can efficiently convert locus bean gum to mainly M2, M3 and M5, and hydrolyze manno-oligosaccharides with a minimum DP of 3. Further exploration of the optimum condition using HPLC to prepare oligosaccharides from locust bean gum was obtained as 10 mg/ml locust bean gum incubated with 10 U/mg enzyme at 50 °C for 24 h. By using this enzyme, locust bean gum can be utilized to generate high value-added oligosaccharides with a DP of 2–6.
研究领域:
酶学
·
生物技术
·
食品科学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Su Xu,YaNi Yi,HuaYing Li,WeiWei Zhang
Oxytetracycline (OTC), a persistent and poorly biodegradable antibiotic, is increasingly detected in aquatic environments, posing ecological and health risks. Herein, a defect-rich, Co-free MoS₂/PMS system enables ultrafast OTC removal, achieving >99% elimination within 5 min (k obs = 0.791 min⁻¹). The process remained highly efficient across pH 2–10 and in real waters containing natural organic matter and common inorganic ions, demonstrating strong robustness under complex water matrices. Radical-quenching and electron paramagnetic resonance (EPR) analyses confirmed that •OH was the dominant reactive oxygen species (ROS), accompanied by SO₄•⁻ and ¹O₂. X-ray photoelectron spectroscopy (XPS) evidenced Mo⁴⁺/Mo⁶⁺ redox cycling and the participation of surface sulfur species and lattice oxygen, which jointly facilitated PMS activation and ROS generation, thereby establishing a coupled radical-non-radical degradation mechanism. Liquid chromatography–mass spectrometry (LC–MS) identified sequential demethylation, deamination, and ring-opening intermediates, while QSAR-based ecotoxicity assessment indicated an overall decrease in predicted toxicity for most transformation products relative to OTC. Machine-learning analysis (XGBoost with SHAP interpretation) highlighted reaction time, PMS dose, and natural organic matter as the primary determinants of degradation efficiency. Overall, this work integrates a Co-free, light-independent MoS₂/PMS system, refined dual radical–non-radical mechanistic elucidation, comprehensive toxicity mitigation assessment and explainable machine learning, offering both mechanistic and engineering guidance for the sustainable treatment of antibiotic-contaminated wastewater.
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2022
·
IF 4.654
Bingjie Wen,Nizao Kong,Min Huang,Liqin Fu,Dingbang Yan,Yexin Tian,Jinshui Liu,Ruixuan Tan,Fei Han
Despite the outstanding theoretical capacities of two-dimensional (2D) molybdenum sulfide (MoS2) with low costs, its low conductivity and easy agglomeration greatly impede the business application as anode materials. The heterostructures between 2D MoS2 and Ti3C2 MXene are able to combine the collective superiorities of MoS2 and Ti3C2, thus greatly ameliorating the electrical conductivity and rate capacity through synergistic effects. Herein, we design a simple intercalation–sulfidation strategy for the construction of the TH MoS2/Ti3C2 heterostructures with a compact stacking lamellar structure and investigate the electrochemical sodium storage properties of the composite. In the architecture, fallen leaf-like MoS2 nanosheets with a mixed-phase crystal containing 1T and 2H phases grow tightly on the surface and interlayer of Ti3C2 matrixes. The expanded layer spacing of Ti3C2 as a result of MoS2 insertion can greatly accelerate electronic/sodium ion transport. Meanwhile, 2D Ti3C2 can serve as a strong mechanical support for the composite electrode to provide a buffer space for volume expansion and avoid structural collapse during cycles. Benefiting from these structural advantages, the TH MoS2/Ti3C2 anode reveals higher sodium storage capacity of 743.6 mAh g–1 than bare MoS2 (579.4 mAh g–1) at 0.2 A g–1. Furthermore, the anode exhibits significantly improved battery rate performance with a high sodium storage capacity of 653.3, 539.1, 512.1, 488.7, 439.3, and 586.7 mAh g–1 at 0.2, 0.5, 1, 2, 5, and 0.2 A g–1. Our study provides a unique synthesis route to construct layered heterostructure composites by artificial stacking of different types of 2D materials, which are considered as highly promising electrode materials for sodium-ion batteries (SIBs).
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
无机化学
·
固态物理
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Haoran Yu,Longgang Chu,Cheng Gu,Mingyang Xing
In this study, we present an effective modification strategy for cobalt ferrate (CoFe₂O₄), a cost-effective heterogeneous Fenton catalyst. Electron microscopic observation and X-ray diffraction results confirmed the successful hydrothermal synthesis of F-CoFe₂O₄/MoS₂. Notably, F-CoFe₂O₄/MoS₂ exhibited a high pollutant degradation efficiency (over 90 % within 30 min) across a broad pH range (4.0–9.0), along with excellent cyclic stability (up to 10 cycles) and environmental robustness. The effectiveness of the catalyst in treating real water samples and its performance in continuous-flow operations were also demonstrated. Fluorine (F) doping and integration with molybdenum sulfide (MoS₂) as a co-catalyst significantly facilitated metal ion release and promoted the formation of an acidic microenvironment on the catalyst surface, which accelerated Fe³ ⁺/Fe²⁺ cycling and enhanced CoFe₂O₄ performance in H₂O₂ activation and pollutant degradation. This work provides valuable insights for designing more efficient catalysts for heterogeneous Fenton oxidation systems in water treatment applications.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yonggang Du,Weiqiang Xu,Yulei Jia,Yahui Cui,Yuyan Bi,Yudou Wang,Diansheng Wang
To overcome the suboptimal performance of paper–based humidity sensors, sensing composite materials were developed through the aqueous–mechanical defibration of everyday office paper into paper–derived cellulose fibers (PDCFs), followed by integration with molybdenum disulfide (MoS₂) microspheres. This straightforward yet effective strategy affords significant advantages for enhancing sensing capabilities. Specifically, the defibration process increases available adsorption sites by exposing hydrophilic groups while simultaneously generating more porosity for accelerated water vapor diffusion. Furthermore, utilization of the PDCFs suspension facilitates uniform dispersion of MoS₂ microspheres throughout the cellulose matrix, thereby harnessing synergistic effects from both components to improve sensing performance. Additionally, the aqueous composite's drop–casting compatibility enables utilization of microscale interdigitated electrodes (IDEs) spacing to enhance sensitivity. The resulting PDCFs–MoS₂ film sensor demonstrates exceptional characteristics, including a high response value (4167.8), a broad detection range (0–97 % RH), rapid response and recovery time (1.0 and 22.6 s, respectively), low hysteresis (3.8 %), good repeatability, and long–term stability. The sensor's practical utility was validated via human respiration monitoring and non–contact switching. This work establishes a viable pathway for transforming office paper into high–performance humidity–sensing materials.
研究领域:
材料科学
·
传感器与传感技术
·
纳米复合材料
·
环境监测
·
柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 8
·e202405489
·
IF 2
Xin Wang,Tao Feng,Si Wu
Graphical This paper reports the one-step synthesis of 1T-MoS₂ nanosheets using a simple hydrothermal method at 140 °C. The highest adsorption abilities for methylene blue and rhodamine b are 605 and 795 mg g⁻¹, respectively. This paper reports on the one-step synthesis of molybdenum disulfide (MoS 2 ) nanosheets with excellent adsorption properties for cationic dyes using a simple hydrothermal method. Compared with 2H-MoS 2 prepared at 220 °C, 1T-MoS 2 prepared at 140 °C showed better adsorption of cationic dyes, with highest adsorption abilities of 605 and 795 mg g⁻¹ for methylene blue and rhodamine b, respectively. The adsorption process follows a pseudo second-order kinetic model, which indicates that the process is mainly controlled by chemisorption. At the same time, the Langmuir isotherm model is more suitable for describing the adsorption process, suggesting a monolayer adsorption on a homogeneous surface of 1T-MoS 2 . Adsorption equilibrium times were observed at 1–6 h in the initial dye concentration range of 100–400 mg/L. The zeta-potential and XPS results suggest that 1T-MoS 2 possesses a negatively charged surface and abundant oxygen-containing functional groups, making it more effective in adsorbing cationic dyes. The excellent adsorption performance of 1T-MoS₂ provides fresh perspectives for the development of MoS₂-based adsorbents.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jiawen Yan,Ke Sang,Xiaohan Jiang,Qiming Li,Fuyi Jiang,Yanli Zhou
In this study, amorphous MoS 3 -modified porous Co 4 S 3 -embedded N,S co-doped carbon polyhedron (Co 4 S 3 @NSC/MoS 3 ) was rationally prepared via a multi-step method. One-dimensional linear-like MoS 3 with a high specific capacity of 894 mAh g −1 and abundant active sites compensated for the low capacity of Co 4 S 3 , thus enhancing the sodium ion storage capacity of the entire electrode. Moreover, three-dimensional N,S co-doped carbon networks (NSC) significantly inhibited large volumetric fluctuations in Co 4 S 3 and MoS 3 , thereby sustaining the structural stability and enhancing the electron transfer efficiency. As a new anode material for sodium-ion half batteries, the constructed Co 4 S 3 @NSC/MoS 3 with rapid Na + diffusion and charge transfer kinetics demonstrated better sodium storage properties than Co 4 S 3 @NSC. At a rate of 0.5 A g −1 over 100 cycles, the reversible specific capacity of Co 4 S 3 @NSC/MoS 3 reached 594 mAh g −1 . Even when cycled at a rate of 2 A g −1 for 600 cycles, the charge capacity was stable at 435 mAh g −1 . The rate performance of Co 4 S 3 @NSC/MoS 3 was also found to be remarkable; when the rate increased to 10 A g −1 , the average capacity was retained at 382 mAh g −1 . Apart from half cells, reduced graphene oxide (rGO)-modified Na 3 V 2 (PO 4 ) 3 composite (Na 3 V 2 (PO 4 ) 3 @rGO) was used as the cathode material to match with Co 4 S 3 @NSC/MoS 3 . The assembled full batteries were analyzed and their electrochemical properties were discussed. They also exhibited outstanding rate capability and high-rate long-life cyclic property. Even at 1 A g −1 over 500 cycles, the discharge capacity was stably maintained at 246 mAh g −1 . The outstanding sodium storage properties of Co 4 S 3 @NSC/MoS 3 mainly depended on the cooperative effects of MoS 3 and Co 4 S 3 @NSC, indicating the potential application of Co 4 S 3 @NSC/MoS 3 in energy storage fields.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
·
2023
·Vol. 220
·期 9
·2200903
·
IF 2
Haotian Cai,Kamale Tuokedaerhan,Zhenchuan Lu,Hongguo Du,Renjia Zhang
Herein, zirconia thin films are successfully prepared on silicon substrates using the sol–gel method, and the microstructure, optical, and electrical properties of zirconia high- k gate dielectric films are analyzed at different annealing temperatures. X-ray diffraction results show that ZrO 2 films crystallize above 500 °C and the grain size increases with the increase of annealing temperature; X-ray photoelectron spectroscopy analysis confirms that metal–oxygen bonds can be effectively formed and defects in the films are eliminated by annealing treatment, with significant changes in the valence band shift (Δ E v ) and conduction band shift (Δ E c ) with increasing annealing temperature. Analysis of the optical properties of the films by UV-Vis confirms that all zirconia films have high transmittance, with the bandgap increasing from 5.54 to 5.74 eV with increasing annealing temperature. Atomic force microscope and field emission scanning electron microscope show that the film quality is better and the root mean square roughness of the zirconia films increases from 0.551 to 1.190 nm and the film thickness decreases from 176.19 to 58.73 nm with increasing annealing temperature. Electrical performance tests show that proper annealing is effective in improving electrical properties, such as obtaining a larger dielectric constant ( k ) and a lower leakage current density.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）