JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Liang Zhou,Tianyu Xia,Tianqi Cao,Lingrui Wang,Yongsheng Chen,Shunfang Li,Rongming Wang,Haizhong Guo
Molybdenum disulfide (MoS 2 ), as a classic two-dimensional material, is limited in applications with its relatively poor conductivity and chemical instability due to its single morphology/phase structure in electrocatalytic activity and specific capacitance . Moreover, up to date, it is still an open area in establishing cost-effective approaches to fabricate exotic MoS 2 nanostructures with desired morphology and phase component for exhibiting excellent performance in energy conversion and storage . Herein, only using extremely ordinary sources of molybdenum and sulfur and a simple one-pot hydrothermal method , we efficiently and economically synthesized two types of stable MoS 2 nanostructures with a certain percentage of the metastable metallic (1T) phase, i.e., spherical nanoflowers (SNF) and random nanosheets (RNS). Both SNF–MoS 2 and RNS-MoS 2 exhibited excellent electrocatalytic activity for hydrogen evolution reaction with ultra-high stability and high specific capacitance. These remarkable properties are due to the dramatically increased number of active sites in these unique nanostructures and their enhanced electric conductivities due to the metallic 1T phase. Furthermore, when these two types of nanostructures are physical decorated with carbon black, their electrocatalysis is further enhanced. Our findings offer an economical approach to fabricate stable MoS 2 -based nanomaterials for practical applications with highly efficient energy conversion and energy storage.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Shansu Li,Xin Ye,Yingbo Guan,Rui Han,Yuan Liu,Qi Wang
The development of mobile communication technology and portable electronic devices inevitably leads to electromagnetic pollution. Constructing high-performance electromagnetic shielding materials with three-dimensional porous structures is an effective strategy to address this issue. Herein, composite melamine-formaldehyde (MF) foams with multilayer structures were developed via electrostatic self-assembly and cross-linking processes. In the synthesized composite foam, modified molybdenum disulfide (C-MoS2) and graphene (GP) that undergo electrostatic self-assembly are anchored to the foam skeleton via cross-linking of sodium alginate and calcium chloride, effectively preventing aggregation. Driven by interfacial polarization at the GP/C-MoS2 heterogeneous interfaces and conduction loss within the continuous network, the composite exhibits enhanced electromagnetic wave dissipation. In addition, the multilayered interface between GP and C-MoS2 nanosheets extends electromagnetic wave transmission paths via multiple reflections and scattering. The composite foam exhibits exceptional electromagnetic shielding performance, achieving an electromagnetic interference (EMI) shielding effectiveness (SE) of 49.6 dB and a specific shielding efficiency (SSE/t) exceeding 3500 dB cm2 g–1, complemented by an excellent compressive strength and thermal stability. This work demonstrates a viable strategy for designing multifunctional electromagnetic shielding materials.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Yingna Chang,Xinyu Cao,Tao Ye,Xiaoli Yan,Kefan Song,Yu Liu,Rong Xing,Jiawei Li,Danni Wang,Guoxin Zhang
Salt-assisted in situ synthesis strategy enables alkali metal doping and S vacancies in MoS 2 , yielding MoS 2 nanosheet HER catalysts. • The Li-MoS 2 achieves a low overpotential of 185 mV at 10 mA cm⁻ 2 , with a Tafel slope of 108 mV dec⁻ 1 , and long-term stability. • Alkali metal doping induces S vacancies and negative Mo 3 d shifts, boosting Mo surface electron density, H desorption, and HER activity. Designing highly active and stable two-dimensional transition metal disulfides electrocatalysts that can outperform Pt remains challenging due to the inert basal plane and poor electrical conductivity of pristine materials. Herein, we report a salt-assisted in situ synthesis that simultaneously achieves alkali metal doped (Li, Na, K) and high-density S vacancies during MoS 2 growth, thereby avoiding the lattice damage inherent to conventional post-treatment methods. Electrochemical measurements reveal that Li-doped MoS 2 (Li-MoS 2 ) exhibits markedly enhanced HER activity in acidic media, requiring an overpotential of only 185 mV to at a current density of 10 mA cm −2 , along with a Tafel slope of 108 mV dec −1 . Outperforming both pristine MoS 2 and Na-/K-doped counterparts under the same conditions, it also maintains excellent stability over 50 h. This work provides an economical, sustainable, and efficient synthetic route for defect engineering in two-dimensional catalysts. Download: Download high-res image (185KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Fanen Zeng,Zilong Zhou,Guojun Li,Bing Xu,Jun Shi,Chunyang Li
High–entropy sulfide (HES) benefits from multicomponent synergy and improved structural stability, single HES electrodes may still suffer from limited exposure of surface redox–active sites, insufficient electrochemically active interfaces, and restricted ion diffusion pathways. Here, a HES@MoS 2 heterojunction electrode material based on HES as the core was synthesized using a two–step hydrothermal method. The S/Mo source ratio was varied to regulate MoS 2 shell growth and mesoporous architecture. The combination of HES/MoS 2 heterointerface construction with MoS 2 nanosheet the electrochemically active interface and enhances energy storage density. The optimized sample (HES@MoS 2 –2), which was synthesized at an S/Mo source ratio of 4, exhibits excellent electrochemical performance, including good rate capability, fast reaction kinetics, low impedance, and a high specific capacitance of 1622.2 F g –1 at 0.5 A g –1 . Density functional theory (DFT) further suggests interfacial electronic coupling involving Mo d, transition–metal d, and S p states. The asymmetric supercapacitor device assembled from the material and carbon ball has an energy density of 132.1 Wh kg –1 at a power density of 375.6 W kg –1 and retains 88.1% of its initial capacitance after 10,000 cycles. This study combines HES/MoS 2 interface construction with regulation of the nanosheet shell to improve electrolyte accessibility and electrochemical performance of HES–based electrodes. Download: Download high-res image (297KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Laser & Photonics Reviews
·
2025
·Vol. 19
·期 22
·e00823
·
IF 10
Yuxiang Zhang,Weiqing Tang,Haiyang Liu,Mengyu Liu,Anqi Cheng,Shiming Wu,Ying Ye,Min Liu,Zongnan Zhang,Chunmiao Zhang,Yaping Wu,Xu Li,Zhiming Wu,Junyong Kang
Two-dimensional transition metal dichalcogenides represent a highly attractive platform for the development of valleytronic devices due to their unique spin-valley properties. Herein, a plasma-assisted interfacial engineering is proposed to enhance valley polarization and valley splitting in MoS 2 /AlN heterostructure by modifying the surface configurations of AlN substrates. The experimental results show that after the optimized N 2 -plasma treatment, the AlN surface becomes smoother with a decreased migration barrier, thereby facilitating the growth of high-quality MoS 2 . The valley splitting and degree of valley polarization in the optimal sample reach 7.96 meV (the corresponding Landé g factor is 19.6) and 33.8% at −7 T, which are 16.0- and 1.0-fold higher than those in the untreated MoS 2 /AlN heterostructure, respectively. Theoretical simulations indicate that the enhanced spin-valley properties are predominantly ascribed to the AlN surface magnetism induced by the hybridization of P z and P y orbitals of surface N and O atoms. This work opens a new avenue for manipulating spin-valley properties in 2D materials via interfacial engineering.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 32
·2400670
·
IF 27.4
Hanjun Jiang,Lei Li,Yao Wu,Ruihuan Duan,Kongyang Yi,Lishu Wu,Chao Zhu,Lei Luo,Manzhang Xu,Lu Zheng,Xuetao Gan,Wu Zhao,Xuewen Wang,Zheng Liu
Two-dimensional ultrathin ferroelectrics have attracted much interest due to their potential application in high-density integration of non-volatile memory devices. Recently, 2D van der Waals ferroelectric based on interlayer translation has been reported in twisted bilayer h -BN and transition metal dichalcogenides (TMDs). However, sliding ferroelectricity is not well studied in non-twisted homo-bilayer TMD grown directly by chemical vapor deposition (CVD). In this paper, for the first time, experimental observation of a room-temperature out-of-plane ferroelectric switch in semiconducting bilayer 3R MoS 2 synthesized by reverse-flow CVD is reported. Piezoelectric force microscopy (PFM) hysteretic loops and first principle calculations demonstrate that the ferroelectric nature and polarization switching processes are based on interlayer sliding. The vertical Au/3R MoS 2 /Pt device exhibits a switchable diode effect. Polarization modulated Schottky barrier height and polarization coupling of interfacial deep states trapping/detrapping may serve in coordination to determine switchable diode effect. The room-temperature ferroelectricity of CVD-grown MoS 2 will proceed with the potential wafer-scale integration of 2D TMDs in the logic circuit.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Hui Ci,Lili Ma,Xiangmei Liu,Yanqin Liang,Yufeng Zheng,Zhaoyang Li,Shengli Zhu,Zhenduo Cui,Shuilin Wu
The rapid and timely sterilization is quite important function for textiles to prevent human being from pathogenic bacterial infections. Hence, it is necessary to develop wearable fabrics with rapid and effective antibacterial properties. In this work, using one-step hydrothermal method and electrospinning, we synthesized biocompatible antibacterial hybrid nanofibers composed of poly( Ɛ -caprolactone) (PCL) incorporated with heterojunction of MoS 2 /ZnS (MZ). The MZ endowed the PCL-MZ nanofibers with excellent photothermal and photocatalytic properties under visible light. After 10 min visible light irradiation, the hybrid nanofibers with optimum proportion achieved an effective antibacterial efficacy of 96.03% and 99.09% against Staphylococcus aureus and Escherichia coli , respectively. The underlying mechanism is based on the synergistic effects of reactive oxygen species (ROS) and hyperthermia. Thus, the PCL-MZ hybrid nanofibers will be promising for the fabrication of wearable antibacterial fabrics.
研究领域:
材料科学
·
生物医学工程
·
纺织科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Jianfeng Li,Jinjin Li,Shuang Yi,Kaiqiang Wang
Molybdenum disulfide (MoS2) nanoflakes are widely used as nano-additives in oil for the excellent lubrication performance. However, the molecular mechanism of MoS2 nanoflakes in oil governing the friction properties remains elusive. In this study, MoS2 homojunctions were constructed by combining the fabricated MoS2 probe and MoS2 crystal with an atomic force microscope (AFM), and the superlubricity with an ultralow friction coefficient of approximately 0.003 at MoS2 homojunctions was attained after the formation of a confined oil layer, exhibiting a 67% reduction of the friction coefficient in comparison to that under a nitrogen atmosphere. The boundary slip of oil molecules on the MoS2 crystal with a small energy barrier was observed, causing the shear to occur at the interface of oil/MoS2 crystal with an extremely low shear strength, which contributes to the achievement of superlubricity. This boundary slip of oil molecules at MoS2 homojunctions can be extended to the macroscale for friction reduction, supplying a fundamental insight into the lubrication mechanism of MoS2 nanoflakes in oil, which has potential applications for designing an efficient lubrication system with nano-additives.
研究领域:
材料科学
·
摩擦学
·
纳米技术
✓ 已验证
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2017
·
IF 4.164
Zhao Li,Yuhong Yang,Jinrong Yao,Zhengzhong Shao,Xin Chen
Photothermal therapy, due to its safety and effectiveness, has attracted tremendous interest in the area of cancer treatment in recent few decades. The emerging of two-dimensional transition metal dichalcogenides has provided this promising therapy with a novel genus of nanomaterials. Herein, we present a facile one-step way to prepare a hybrid of regenerated silk fibroin (RSF) and molybdenum disulfide (MoS 2 ) nanosheets simply by directly adding MoS 2 dispersion into RSF aqueous solution to induce the self-assembly of silk protein on the surface of MoS 2 flakes. The produced RSF/MoS 2 hybrids demonstrate better photothermal performance and less cytotoxicity than the pristine MoS 2 . In the meantime, the RSF/MoS 2 hybrids show a good photothermal stability. Finally and importantly, the RSF/MoS 2 hybrids display a satisfying photothermal capability on ablating HeLa cells in vitro, which imply that such a protein/inorganic hybrid material holds a great promise as a photothermal agent in future cancer treatment.
研究领域:
生物医学工程
·
肿瘤学
·
纳米医学
✓ 已验证
DOI
PubMed
高影响因子
Catalysts
·
2026
·Vol. 16
·期 2
·188
·
IF 4.5
Lian Yi,Qiulin Chen,Wen Zhang,Rongshu Zhu
The construction of Z-scheme heterojunctions is regarded as one of the most effective modification strategies for photocatalysts. However, how to improve the interfacial charge transfer efficiency to further enhance the photocatalytic activity remains an urgent issue to be addressed. In this study, sulfur vacancy-enriched ZnIn2S4/MoS2Z-scheme heterojunctions (V-ZIS/MS) containing interfacial Mo-S bonds was successfully synthesized using a hydrothermal method. The V-ZIS/2%MS showed the highest hydrogen evolution rate, achieving 19.21 ± 0.78 mmol·g−1·h−1under visible light and 112.89 ± 10.98 mmol·g−1·h−1under full-spectrum illumination, which are 5.07 and 4.41 times higher than ZIS (3.79 ± 0.79 mmol·g−1·h−1) and V-ZIS (4.36 ± 0.98 mmol·g−1·h−1) under visible light, respectively, outperforming most reported ZIS-based photocatalysts. This is because the composite of V-ZIS and MS enhanced its light absorption performance. More importantly, the formation of Mo-S bonds at the V-ZIS/MoS2interface facilitated efficient charge transfer and reduced interfacial resistance, leading to significantly improved photocatalytic activity. Cycling experiments further demonstrate that V-ZIS/2%MS exhibits considerable photocatalytic stability. X-ray diffraction analysis before and after the reaction further confirmed the structural stability of the catalyst. This work provides a certain reference for the preparation of high-performance ZIS-based photocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2021
·
IF 4.126
Luji Li,Gaojie Zhang,Hao Wu,Li Yang,Pengfei Gao,Shanfei Zhang,Xiaokun Wen,Wenfeng Zhang,Haixin Chang
Weyl semimetals haveattracted extensive research interests due to their unique topological properties. However, photoelectric devices based on pristine semimetals with large electrical conductivity are hard to detect especially under weak light. Here, with the help of MoS2, a stable van der Waals semiconductor, WTe2/MoS2 van der Waals heterojunctions are designed to successfully realize stable photoresponse from visible light to near-infrared. Tunable photocurrent is observed compared to pristine MoS2 with faster response under the effect of semimetal WTe2. Our study illustrates the great potential of WTe2 and other topological semimetals in photodetectors.
✓ 已验证
DOI
高影响因子
Biomaterials Advances
·
2023
·
IF 0
Yue Wang,Kun Liu,Kai Huang,Wenying Wei,Ye Huang,Honglian Dai
Pathological bacterial infection poses a serious threat to public health security. The excessive use of antibiotics has resulted in a serious decline in treatment effect and bacterial resistance. For the treatment of infected wounds, we compounded dopamine-assisted exfoliated molybdenum disulfide (MoS 2 @PDA) into lipoic acid modified chitosan (LAMC) to obtain a composite hydrogel dressing (LAMC-MoS 2 @PDA). LAMC-MoS 2 @PDA hydrogels exhibited excellent photothermal conversion ability and the LAMC-MoS 2 @PDA2 group (0.3 wt%) has a photothermal conversion efficiency of 26.29 %. Meanwhile, they showed good biocompatibility and ROS scavenging activity in vitro. Photothermal therapy usually utilizes photothermal agents to convert near-infrared light into heat energy for bacterial cell membrane destruction and bacterial protein inactivation. Under the near-infrared light irradiation, the antibacterial ratio of LAMC-MoS 2 @PDA hydrogels against Staphylococcus aureus and Escherichia coli reached nearly 100 %, and the morphology of the bacteria showed obvious contraction and cleavage. The hydrogels also showed an excellent antibacterial effect and wound healing promotion in the infected wound of rats. In particular, the LAMC-MoS 2 @PDA2 (+) group (with NIR) showed almost complete wound closure after 14 days, indicating that the LAMC-MoS 2 @PDA hydrogels have great potential in clinical anti-infected treatment.
✓ 已验证
产品关联
DOI
PubMed
危险品化学品经营许可证（带存储）