JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2018
·Vol. 18
·期 7
·5049-5053
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IF 1.354
Meng Xiuqing,Yang Dawei,Fang Yunzhang,Ye Huiqun,Su Wenming
In place of the widely studied graphene, monolayer or few-layer MoS2 flakes are promising materials for next-generation optoelectronic devices. MoS2 has attracted increasing attention in physics and its applications because of its capacity to undergo indirect-to-direct
band gap transition. Raman spectroscopy is a useful and versatile tool to probe the physical properties of pristine and intercalated MoS2. This study investigates for the first time the multiphoton modes of FeCl3- and Zn-intercalated few-layer MoS2 at high
frequencies of 1513 and 1732 cm−1 for FeCl3–MoS2 and 1341 and 1604 cm−1 for Zn–MoS2. The substrates interact with MoS2 during intercalation. The Raman peak intensities of the intercalated samples vary
with intercalation time while keeping the peak position nearly constant. This finding is interesting and suitable for studying other 2D layered materials.
研究领域:
物理学
·
材料科学
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DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·Vol. 35
·期 34
·2423333
·
IF 19
Yuan Li,Min Zhao,Xiudong Ma,Liang Zhang,Shangzhou Zhao,Wlodek Strupinski,Xiangyu Zeng,Mingjia Zhang,Yufeng Hao
Memtransistors with nonvolatile storage, reconfigurability, and simulated synaptic functions are critical to overcoming the traditional von Neumann computer architecture bottleneck. Emerging two-dimensional van der Waals heterostructures (vdW) are promising candidates for constructing advanced three-terminal memtransistors by integrating the intriguing features of different materials and offering additional controllability over their existing optoelectronic properties. Herein, molybdenum disulfide (MoS 2 )/Tellurene (Te) vdW p-n junction memtransistors are fabricated to mimic the plasticity, multi-bit memory, and paired-pulse facilitation behavior of biological synapses. The high surface potential difference and charge trapping of the MoS 2 /Te heterostructure can endow the device with reconfigurable functionality through the transformation from short-term plasticity to long-term plasticity under illumination. Meanwhile, optoelectronic synaptic memtransistors also demonstrate nonvolatile behavior with a long retention time up to several hours, which can realize optical potentiation and electrical depression in one synaptic activity. On this basis, a logical operation of “OR” is realized by controlling the optical and electrical inputs. Moreover, artificial neural network training is performed to achieve a high recognition accuracy of 87.8% for handwritten digit recognition, demonstrating the potential of the artificial optoelectronic synapses in neuromorphic calculation.
研究领域:
纳米电子学
·
神经形态工程
·
光电子学
·
二维材料
·
人工智能硬件
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DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Langlang Qin,Yunfei Gao,Caiyun Han,Qiannan Ding,Shuang Wang,Jinping Li
Photothermal hydrogenation of CO 2 to methanol using renewable H 2 represents a promising strategy for mitigating the greenhouse effect and the energy crisis. MoS 2 has been investigated as an effective catalyst for CO 2 hydrogenation in thermal catalysis. However, till now, the photothermal catalysis of MoS 2 for enhanced methanol synthesis has been rarely reported. In this study, we synthesized and investigated MoS 2 with a series of morphological changes from nanoflower, nanosheet to bulk structures. Characterization revealed that the nanosheet MoS 2 possesses the highest specific surface area and the most abundant active Sv sites. Performance tests indicated that under standalone thermal catalysis, the turnover frequency (TOF) for methanol synthesis follows the order: nanosheet > nano-flower > bulk for MoS 2 . However, the light-enhancement effects under photothermal catalysis exhibited a different trend with respect to morphological structure. It was discovered that bulk MoS 2 , which possesses the least specific surface area and Sv, showed the best light-enhancement effect with 102.45 % increase in methanol yield. It is hypothesized that the light-enhancement effect is more related to more exposed planar sites, which do not align linearly with specific surface area and Sv. These are evidenced by physiochemical characterizations, photoelectric response experiments and performance tests. These findings could offer important insights into future catalyst design for MoS 2 -type materials with both enhanced thermocatalytic activity and light-enhancement effect.
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高影响因子
RSC Advances
·
2018
·Vol. 8
·期 38
·21644-21650
·
IF 2.936
Shuxin Sun,Tifeng Jiao,Ruirui Xing,Jinghong Li,Jingxin Zhou,Lexin Zhang,Qiuming Peng
New molybdenum disulfide (MoS2)-based core–shell nanocomposite materials were successfully prepared through the self-assembly of mussel-inspired chemistry. Characterization by Fourier transform infrared, thermogravimetric analysis, scanning electron microscope and transmission electron microscopy revealed that the surface of the flaked MoS2 was homogeneously coated with a thin layer of polydopamine (PDA). Dye adsorption performances of the synthesized MoS2–PDA nanocomposites were investigated at different pH values and reaction times. Compared with pure MoS2 nanosheets, the obtained core–shell nanocomposites showed elevated adsorption performances and high stability, indicating their potential applications in wastewater treatment and composite materials.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
iScience
·
2021
·
IF 5.458
Manzhang Xu,Jiuwei Gao,Juncai Song,Hanxin Wang,Lu Zheng,Yuan Wei,Yongmin He,Xuewen Wang,Wei Huang
The two-dimensional (2D) transition metal dichalcogenides (TMDs) are promising flexible electronic materials for strategic flexible information devices. Large-area and high-quality patterned materials were usually required by flexible electronics due to the limitation from the process of manufacturing and integration. However, the synthesis of large-area patterned 2D TMDs with high quality is difficult. Here, an efficient and powerful pulsed laser has been developed to synthesize wafer-scale MoS 2 . The flexible strain sensor was fabricated using MoS 2 and showed high performance of low detection limit (0.09%), high gauge factor (1,118), and high stability (1,000 cycles). Besides, we demonstrated its applications in real-time monitoring of health-related physiological signals such as radial artery pressure, respiratory rate, and vocal cord vibration. Our findings suggest that the laser-assisted method is effective and capable of synthesizing wafer-scale 2D TMDs, which opens new opportunities for the next flexible electronic devices and wearable health monitoring.
研究领域:
材料科学
·
生物医学工程
·
柔性电子学
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2015
·Vol. 51
·期 3
·1344-1353
·
IF 2.371
Yang Xia,Meng Nannan,Zhu Yuanchao,Zhou Yifeng,Nie Wangyan,Chen Pengpeng
In this work, molybdenum disulfide (MoS 2 ) nanosheets were employed to enhance the mechanical and thermal properties of chitosan (CS), which was one of the most promising biomaterials. In order to promote a homogeneous dispersion of MoS 2 and improved interface interactions between CS and fillers, carboxyl functionalization was subjected to the exfoliated MoS 2 nanosheets by chemical conjugation with thioglycolic acid before compositing with CS. Afterward, the CS/MoS 2 – g –COOH composite films were prepared by a simple solution blending method. Micromorphology characterizations showed that MoS 2 – g –COOH nanosheets dispersed much better than unmodified MoS 2 nanosheets, which was considered to be quite beneficial for the enhanced properties of CS nanocomposites. DMA results indicated that the mechanical properties of CS were improved by incorporating with MoS 2 – g –COOH nanosheets compared with neat CS and unmodified MoS 2 -filled CS. The thermal stability of CS/MoS 2 – g –COOH was also improved. This work demonstrated a promising route to prepare MoS 2 -based polymer nanocomposites with excellent performances.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
Journal of Physical Chemistry C
·
2018
·
IF 4.484
Le Zhou,Hongwen Zhang,Haoming Bao,Guangqiang Liu,Yue Li,Weiping Cai
A flexible route is presented for the controlled decoration of the Au nanoparticles (NPs) on the spherical MoS2 particles, just by dropping the HAuCl4 aqueous solution into the hydrothermal reaction-induced MoS2 colloidal solution at room temperature. In the absence of surfactants in the colloidal solution, it has been found that the obtained products are mostly the MoS2/Au Janus particles, in which the hemispherical Au particles are separately attached on the single MoS2 spheres about 100 nm in size. The hemispherical Au particles are built of the ultrafine NPs (<10 nm) and comparable to the MoS2 spheres in size. Further experiments have revealed that the existence of surfactants in the colloidal solution could significantly influence the distribution and decoration of Au NPs on the MoS2 nanospheres. When the MoS2 colloidal solution contains the nonionic or anionic surfactant, such as poly(vinylpyrrolidone) and sodium dodecyl benzene sulfonate, in appropriate content, the addition of HAuCl4 induces the Au ultrafine NPs highly uniformly attached or decorated on the MoS2 spheres. The distribution of the Au ultrafine NPs on the MoS2 spheres evolves from a dispersed decoration to the intact core/shell structure with the rising HAuCl4 addition amount. However, the cationic surfactant could prevent Au NPs from decoration on the MoS2 spheres and induce the self-agglomeration of Au NPs. The formation of MoS2/Au Janus particles is attributed to the aggregation growth of Au ultrafine NPs on the MoS2 spheres, whereas the dispersed decoration of Au ultrafine NPs on the MoS2 spheres is ascribed to the surfactant-induced uniform distribution of Au NPs. Interestingly, such decorated spherical MoS2 NPs have exhibited a much higher surface-enhanced Raman scattering effect than the decorated MoS2 nanoplates. This work presents a simple approach to the controllable decoration of Au NPs on the spherical MoS2 particles.
研究领域:
材料科学
·
纳米技术
·
化学工程
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2019
·
IF 5.107
Songlin Wang,Wenxin Xu,Junfeng Wu,Qing Gong,Pengchao Xie
The low efficiency of transforming ferric ion (Fe 3+ ) to ferrous ion (Fe 2+ ) always challenges the activation of peroxymonosulfate (PMS) by (Fe 2+ ) processes in the degradation of micro-organic contaminants. In this study, molybdenum disulfide (MoS 2 ) which accelerated PMS activation and the Fe 2+ /Fe 3+ cycle through the reaction of Mo 4+ and Fe 3+ was employed to significantly improve the efficiency of Fe 2+ /PMS on sulfamethoxazole (SMX) degradation. Through the analysis of electron paramagnetic resonance (EPR) and quenching experiments, both sulfate and hydroxyl radicals have been proven to account for SMX degradation in the MoS 2 /Fe 2+ /PMS process. The optimal pH of 3 has been determined for SMX degradation in the process, and an equation to express the relationship between the rate of SMX degradation and the dosages of Fe 2+ , MoS 2 and PMS was simulated. Chloride ion and humic acid had positive and negative effects on the process, respectively, whereas nitrate and bicarbonate had no influences on SMX degradation. Through the identified intermediates by LC/MS, a transformation pathway of SMX in the MoS 2 /Fe 2+ /PMS process was proposed. Additionally, the good efficiency of SMX degradation (>80%) in real water matrices and good stability of MoS 2 after reuse for 6 times further suggest that the MoS 2 /Fe 2+ /PMS process can be effectively used to degrade SMX.
研究领域:
环境科学
·
化学工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2017
·
IF 4.233
Ying Zeng,Na Guo,Yunjia Song,Yan Zhao,Haiyan Li,Xingjian Xu,Jianding Qiu,Hongwen Yu
MoS 2 thin nanosheets decorated with CoFe 2 O 4 nanoparticles have been successfully synthesized via a simple hydrothermal method . The nanocomposites are characterized by XRD , TEM , HRTEM, BET, XPS , UV–Vis DRS, PL and magnetic property analysis. The Z-scheme mechanism at the interface of MoS 2 and CoFe 2 O 4 is formed. When the mass ratio of MoS 2 and CoFe 2 O 4 is 1:3, the MoS 2 /CoFe 2 O 4 nanocomposites present excellent photocatalytic performance. The degradation rate of rhodamine B (RhB) and congo red (CR) is 93.80% and 94.43% in 90 and 50 min, respectively, under visible light irradiation. The highly photocatalytic activity could be mainly ascribed to the formed Z-scheme mechanism which facilitates the separation of photoinduced electron-hole pairs. Besides, the MoS 2 thin nanosheets not only provide the most active sites for photocatalytic reactions, but also act as the backing material for CoFe 2 O 4 nanoparticles to effectively disperse and avoid the magnetic aggregation. Moreover, the MoS 2 /CoFe 2 O 4 nanocomposites present a good recyclability and the degradation rate of RhB and CR is still beyond 82% after seven runs. In addition, the nanocomposites can be easily separated by an external magnet.
研究领域:
材料科学
·
环境科学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Ru Yan,Hongyang Wang,Rui Dong,Ping Wen,Mingjin Fan
Conventional solvent-free nanofluids hold promise as lubricants but often face challenges in intricate preparation and unadjustable performance. Herein, we developed a facile one-pot strategy for synthesizing MoS 2 quantum dots (QDs) nanofluids (MoNFs) via a coordination-confined growth approach, which features cyan-fluorescent with an average size of 3.8 nm, homogeneously dispersed in a tailored ionic liquid matrix. The resulting MoNFs exhibit tunable viscosity and desirable shear-thinning behavior. When evaluated as lubricants, the optimal formulation (3MoNFs) decreases wear volume by 73.8% compared to the base fluid. Comprehensive characterization of worn track reveals a triplex synergistic lubrication integrating an electric-double-layer film, tribochemical reaction film and solid-like nanofluid layer, concurrently assisted with repairing pre-existing wear scars. Impressively, blending merely 0.7 wt% 3MoNFs into commercial SN 0 W-30 engine oil enhances its anti-wear performance by 47.5%, demonstrating outstanding potential for high-performance lubricants.
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Ruihan Du,Shuyi Yu,Lu Kang,Longyun Li,Chunli Kang
Traditional water treatment methods still face limitations in addressing environmental and health concerns posed by antibiotic pollutants. Piezoelectric catalysis, as an emerging environmental remediation technology, demonstrates potential in this regard due to its highly efficient catalytic activity. Based on this, this study constructed a binary n-n Type-II heterojunction piezoelectric catalytic material, Bi 4 Ti 3 O 12 /MoS 2 (BTO/MS), for the efficient removal of ciprofloxacin (CIP). A series of BTO/MS composites were synthesized via a simple hydrothermal method, with the 5%BTO/MS composite exhibiting optimal piezocatalytic performance toward CIP: Under conditions of 100 W ultrasonication for 60 min, the removal rate of 10 mg/L CIP reached 94.46%, with an apparent reaction rate constant of 0.0539 min −1 . This represents a 3.46-fold and 17.39-fold increase over pure MoS 2 and pure Bi 4 Ti 3 O 12 , respectively. The composite structure effectively mitigated MoS 2 nanosheet agglomeration and suppressed electron-hole pair recombination via an n-n Type-II heterojunction, significantly enhancing the piezoelectric catalytic activity of 5%BTO/MS. Electron paramagnetic resonance (EPR) results indicate that singlet oxygen ( 1 O 2 ) and superoxide radical (·O 2 − ) are the dominant reactive oxygen species governing the piezoelectric catalytic degradation process. Simulations using T.E.S.T. software revealed that most intermediates exhibited reduced ecotoxicity compared to the parent compound CIP. Additionally, 5%BTO/MS demonstrated excellent catalytic performance in removing CIP from tap water and lake water matrices, as well as in degrading other organic pollutants, indicating the material's promising application potential in the field of piezoelectric catalytic water purification.
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高影响因子
APPLIED CLAY SCIENCE
·
2026
·
IF 5.8
Xiaoyu Li,Wenqing Zhang,Kang Peng,Zheng Zhou,Yewei Dou,Jianguo Feng
Molybdenum disulfide (MoS 2 ) is promising for aqueous-phase catalytic hydrogenation due to its two-dimensional morphology and abundant catalytic active sites, but limited by poor conductivity and hydrophobicity. Herein, a ternary FK/ATO/MoS 2 composite was fabricated by growing MoS 2 nanosheets on an antimony-doped tin oxide (ATO)-modified hydrophilic kaolinite nanoflakes (FK) via simple coprecipitation-hydrothermal method. Evaluated by the aqueous hydrogenation of 4-nitrophenol (4-NP), the optimal composite with 25% Sb doping in ATO and 50% MoS 2 loading (FK/ATO/MoS 2 –50%) exhibits remarkably enhanced hydrogenation activities as compared to other catalysts, and the reaction rate constant is 0.0809 min −1 , 10 times higher than that of pure MoS 2 (0.0081 min −1 ). The improved performances are due to the synergistic contributions from the exposed active sites of MoS 2 , the conductivity of ATO, the hydrophilicity and dispersion of kaolinite. This work presents an efficient aqueous-phase hydrogenation catalyst and a general design strategy for synergistic “support–mediator–active component” catalytic systems.
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