JOURNAL OF MATERIALS SCIENCE
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2018
·Vol. 53
·期 11
·8221-8231
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IF 2.993
Chen Pengpeng,Liang Xiao,Zhou Yifeng,Nie Wangyan
The effects of amino-functionalized molybdenum disulfide (f-MoS 2 ) on the curing activity and mechanical properties of epoxy-based composites were evaluated. The f-MoS 2 was prepared through the mild reaction between mercapto-ethylamine and the exfoliated MoS 2 . Benefiting from the universal binding ability of amino groups, good dispersion of f-MoS 2 in epoxy matrix was achieved. Studies of the curing behavior of epoxy composites showed that the curing temperature and heat release during the curing process of epoxy composites with MoS 2 was lower than that of neat epoxy and composites with MoS 2 , indicating a decreased activation energy. The f-MoS 2 containing amino groups on its surface was revealed can react with epoxy matrix and enhance the curing reactions like a co-curing agent of amine-type curing agent. The mechanical properties and thermal stability of the epoxy were both enhanced by f-MoS 2 . The storage modulus of the EP/f-MoS 2 composites was about 60% higher than that of EP/MoS 2 composites, which was attributed to the improved dispersion of f-MoS 2 in matrix and the strengthened interfacial interactions between f-MoS 2 with epoxy than that of the neat MoS 2 .
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2017
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IF 4.233
Yu-Ting Zhuang,Xiao Zhang,Dan-Hua Wang,Yong-Liang Yu,Jian-Hua Wang
A hierarchical and hybridized hydrogel with rational structure and composition as adsorbent possesses a series of distinct advantages, e.g., fast ion diffusion, high selectivity and good stability. Herein, a novel three-dimensional (3D) molybdenum disulfide (MoS 2 )-reduced graphene oxide (rGO) hydrogel with two-dimensional heterointerfaces is fabricated by an eco-friendly one-pot hydrothermal method. The heterointerfacial area could be readily tuned by the regulation of MoS 2 /rGO ratio, in order to improve the adsorption capacity and selectivity. The 3D MoS 2 -rGO hydrogel with 70 wt% MoS 2 shows high selectivity for Hg(II) ions, with a distribution coefficient value (K d ) of 7.49 × 10 6 mL g −1 even in the presence of other coexisting ions. More attractively, the free-standing and flexible 3D MoS 2 -rGO hydrogel can be used as a column-packed device, providing an efficient pathway for the fast removal of 80 mg L − 1 Hg(II) within 7 min to achieve a tolerable concentration of < 2 μg L −1 in 30 mL water with 5 mg of 3D MoS 2 -rGO hydrogel. Considering that the direct-contact adsorption is more efficient than oscillating adsorption, the 3D MoS 2 -rGO hydrogel as nanobuilding block shows a promising potential for cleaning the point-of-use water.
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PubMed
高影响因子
Coatings
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2018
·Vol. 8
·期 2
·78
·
IF 2.35
Shichao Zhao,Jiaxin Weng,Shengzhong Jin,Yanfei Lv,Zhenguo Ji
Molybdenum disulfide (MoS2) layers show excellent optical and electrical properties and have many potential applications. However, the growth of high-quality MoS2layers is a major bottleneck in the development of MoS2-based devices. In this paper, we report a chemical vapor transport deposition method to investigate the growth behavior of monolayer/multi-layer MoS2using water (H2O) as the transport agent. It was shown that the introduction of H2O vapor promoted the growth of MoS2by increasing the nucleation density and continuous monolayer growth. Moreover, the growth mechanism is discussed.Keywords:chemical vapor transport deposition;molybdenum disulfide;monolayer;water;mechanism
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高影响因子
Biomedical Physics & Engineering Express
·
2025
·Vol. 11
·期 5
·055007
·
IF 1.6
Xuehai Dong,Feng Wan,Jingjing Zhang,Can Zhuo,Naxin Zhou
This study aimed to develop a multifunctional hydrogel for skin wound healing by encapsulating rutin-modified molybdenum disulfide (MoS2) within methacrylated hyaluronic acid (HAMA). Rutin, a natural flavonoid, was employed to stabilize MoS2 dispersion and enable sustained release, thereby promoting fibroblast proliferation. Scanning electron microscopy revealed improved dispersion of rutin-modified MoS2 within the HAMA hydrogel matrix. Under near-infrared (NIR) irradiation, MoS2 demonstrated robust photothermal effects, significantly reducing bacterial viability of both Escherichia coli and Staphylococcus aureus. The sustained release of rutin synergistically enhances photothermal antibacterial efficacy while accelerating fibroblast proliferation, thereby facilitating skin wound healing. This dual-functional mechanism resolves the critical trade-off between rapid bacterial eradication and long-term tissue regeneration, offering a translational therapeutic strategy for wound repair.
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Journal of Water Process Engineering
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2020
·
IF 3.465
Hao Zhao,Guanhua Liu,Miyu Zhang,Hengrao Liu,Min Zhang,Liya Zhou,Jing Gao,Yanjun Jiang
Loose nanofiltration membrane (NFM) is suitable for wastewater treatment especially for dye solution desalination due to its high rejection of dyes and high permeance of salts. In this study, MoS 2 @PDA was prepared by modifying molybdenum disulfide (MoS 2 ) nanosheets with polydopamine (PDA). Then, the loose nanofiltration membrane was prepared by the deposition of MoS 2 @PDA on hydrolyzed polyacrylonitrile (HPAN) ultrafiltration membrane with pressure-assisted self-assembly. The morphology and properties of MoS 2 @PDA and MoS 2 @PDA NFMs were analyzed by SEM, TEM, TGA, FT-IR, AFM, WCA, XRD, and ζ -potentials. The PDA nanoaggregates on the surface of MoS 2 nanosheets interfered with the regular stacking of MoS 2 nanosheets parallel to the membrane surface, so the resultant membranes showed irregular loose structure which could provide transmembrane channels along with the impermeable nanosheet surface for molecule diffusion. When the MoS 2 loading was 0.116 mg/cm 2 and the PDA modification time was 5 h, the pure water flux of MoS 2 @PDA NFM could reach 204.05 LMH/bar, the rejection of methylene blue was 99 %, and rejection of salts (NaCl, Na 2 SO 4 , MgCl 2 , MgSO 4 ) were less than 12 %. And MoS 2 @PDA NFM exhibited satisfactory long-term operational stability. This study provides a new strategy for the design of loose nanofiltration membrane with high performance.
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JOURNAL OF MEMBRANE SCIENCE
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2023
·
IF 9.5
Jinyuan Zhu,Wenqiao Meng,Qiang Xue,Kaisong Zhang
Nano-fillers will be an attractive strategy to improve salt fractionation of nanofiltration (NF) membrane if the integrity problem of nano-fillers in PA layer is well addressed. In this work, molybdenum disulfide (MoS 2 ) nanosheets sulfonated with 1,3-propane sultone was added to the aqueous phase to participate in the interfacial polymerization reaction and construct a novel thin-film nanocomposite (TFN) nanofiltration membrane . A series of characterization and discussion were carried out on the obtained nanomaterials and membranes. The S–MoS 2 nanosheet can be well wrapped by the resulted PA layer, thereby preserving the integrity of the PA skin. Furthermore, The TFN membranes possessed enhanced electronegativity and hydrophilicity and the PA layer became thinner and denser after introducing the sulfonated MoS 2 nanosheets (S–MoS 2 ) in the PA matrix. In particular, the optimal S–MoS 2 composite membrane exhibits excellent performance, which approximately reach 99% divalent salt (Na 2 SO 4 ) rejection and 1.4-fold water permeance of the pristine membrane. Overall, this study provided a novel way for separation treatment of hypersaline wastewater.
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Small
·
2020
·Vol. 16
·期 35
·2003357
·
IF 11.459
Simin Feng,Junyang Tan,Shilong Zhao,Shuqing Zhang,Usman Khan,Lei Tang,Xiaolong Zou,Junhao Lin,Hui-Ming Cheng,Bilu Liu
Monolayer transition metal dichalcogenides are 2D materials with many potential applications. Chemical vapor deposition (CVD) is a promising method to synthesize these materials. However, CVD-grown materials generally have poorer quality than mechanically exfoliated ones and contain more defects due to the difficulties in controlling precursors' distribution and concentration during growth where solid precursors are used. Here, thiol is proposed to be used as a liquid precursor for CVD growth of high quality and uniform 2D MoS 2 . Atomic-resolved structure characterizations indicate that the concentration of sulfur vacancies in the MoS 2 grown from thiol is the lowest among all reported CVD samples. Low temperature spectroscopic characterization further reveals the ultrahigh optical quality of the grown MoS 2 . Density functional theory simulations indicate that thiol molecules could interact with sulfur vacancies in MoS 2 and repair these defects during the growth of MoS 2 , resulting in high-quality MoS 2 . This work provides a facile and controllable method for the growth of high-quality 2D materials with ultralow sulfur vacancies and high optical quality, which will benefit their optoelectronic applications.
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高影响因子
CARBON
·
2018
·
IF 7.082
Jian Wu,Liwen Mu,Jiahua Zhu,Xin Feng,Xiaohua Lu,Roland Larsson,Yijun Shi
In this paper, bubble-on-plate structure is realized on hollow IF-MoS 2 /reduced graphene oxide (HIF-MoS 2 /RGO) nanocomposites . HIF-MoS 2 nanocages templated with the generated ammonia (NH 3 ) are connected to RGO through the interlayered MoS 2 . The as-prepared HIF-MoS 2 /RGO is added into an ionic grease to study the tribological behavior of HIF-MoS 2 /RGO. For comparison, commercial grade MoS 2 nanoparticles , single RGO or HIF-MoS 2 or their physical mixture are also studied. Tribological results show that, compared with other additives, HIF-MoS 2 /RGO nanocomposites have the best anti-wear properties especially under higher load of 3.0 GPa. The wear reduction of HIF-MoS 2 /RGO reinforced grease under 2.5 GPa and 3.0 GPa reached 67% and 96%, respectively. In addition, HIF-MoS 2 /RGO reinforced grease achieves much lower and stable friction coefficient (0.079, the value of neat grease is 0.098) under 3.0 GPa. HIF-MoS 2 /RGO reinforced grease maintains very low friction coefficient and wear up to 4.1 GPa, while the normal MoS 2 and RGO show high wear at the pressure up to 3.0 GPa. It is proposed that HIF-MoS 2 nanocages on RGO act as rolling balls during friction resulting in better separation of steels.
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Materials Today Nano
·
2026
·
IF 8.2
Chan Lu,Lei Huang,Jie Li,Fangqiao Zheng,Zhengyi Lan,Dongyu Li,Hangrong Chen,Nanjing Hao,Ming Ma
The application of nanofluid technology in microchannel flow boiling heat transfer systems represents an effective approach for enhancing the cooling efficiency of electronic devices. However, conventional nanofluids generally suffered from complex preparation processes, insufficient stability, and uncontrollable nanoparticle sizes, etc., which significantly restricted their heat transfer performance. In this study, we successfully synthesized a novel kind of inorganic nanofluid (MoS 2 -PEG-PVP, named as MP nanofluid), based on polyethylene glycol (PEG)-modified molybdenum disulfide (MoS 2 ) nanosheets via an ultrasonically fragmenting method and subsequent polyvinylpyrrolidone (PVP)-assisted dispersion, enabling exceptional dispersion stability and remarkably enhanced flow boiling heat transfer performance. Specifically, the formulated nanofluids exhibited excellent stability at 80 °C for over 14 days and under ambient condition for 90 days without aggregation or sedimentation. More importantly, flow boiling experiments demonstrated that the MP nanofluid, at just 5 ppm and 0.13 m/s, boosts the critical heat flux (CHF) by 110 % and the heat transfer coefficient (HTC) by 114 % as compared to the basic fluid, significantly outperforming conventional nanofluids at higher concentrations. Further visualization studies revealed that the enhancement stems from reduced bubble size and a faster growth-to-collapse cycle, which in turn prevents the boiling crisis in electronic chips associated with large bubble coverage. Overall, this research provides novel insights into the application of MoS 2 -based nanofluids in advanced thermal management systems, exhibiting their significant potential for electronic device cooling.
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JOURNAL OF APPLIED ELECTROCHEMISTRY
·
2026
·Vol. 56
·期 4
·65
·
IF 3.7
Chen Xue,Luo Qiufen,Zhang Hongfang
Developing a simple, rapid and sensitive rutin sensor is of great importance for the quality control or dietary guidance of some agriculture products. Herein, an electrochemical sensor for the quantification of rutin was developed based on the bimetallic nanoparticles with gold as core and platinum as shell. The nanoparticles were prepared by using MoS 2 nanosheets as heterogeneous substrate and reductant for the gold precursor. The morphology of the ultimate nanocomposite was tuned by the amount of gold precursor. With a relatively big amount of chloroauric acid, the nanocomposite exhibited a sea urchin-like core-shell morphology with monodispersity. Moreover, contributing to the large specific area and excellent conductivity of this nanocomposite, the modified electrode prepared with the bimetallic nanoparticles mediated with MoS 2 nanosheets exhibited a response almost twice that of the electrode modified with the single material. As results, the developed electrochemical sensor displayed a broad quantification range from 20 nM to 1 µM with a limit of detection of 3 nM and high sensitivity of 149.3 µA µM − 1 cm − 2 . In addition, the sensor exhibited excellent stability and reproducibility. The recovery results for onion samples demonstrated the application promise of the sensor in various agriculture products. Graphical abstract Adjusting the amount of HAuCl 4 results in two different materials. The performance of electrodes modified with MoS 2 -Au 100 @Pt or MoS 2 -Au 300 @Pt materials is compared. The electrochemical sensor developed by MoS 2 -Au 300 @Pt exhibits the highest sensitivity, and thus is applied to the determination of rutin in onion samples.
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高影响因子
POLYMER COMPOSITES
·
2026
·
IF 4.9
Zhenyu Yin,Yiming Deng,Xinran Li,Lixiu Zhang,Xiaoyi Wei,Ting Li,Xu Bai,Tianhao Gao,Zhengxian Sun
Polytetrafluoroethylene (PTFE) is widely used, but is limited in tribology owing to its poor mechanical properties and wear resistance. In this study, silver-loaded molybdenum disulfide (MoS 2 ) composites were synthesized via polydopamine (PDA) modification and employed as the reinforcing phase to fabricate Ag/PDA/MoS 2 -PTFE composites. This study focused on the tribological and mechanical properties of these composites. The results indicated that the incorporation of Ag/PDA/MoS 2 effectively enhanced the tribological performance, thermomechanical properties, and tensile strength of PTFE. Specifically, at a filler content of 1 wt%, the composite exhibited the optimal lubricating performance, with a 42.5% increase in tensile strength. Furthermore, the composites maintained excellent tribological and thermomechanical properties even at elevated temperatures ranging from room temperature (25°C to 250°C). The mechanism for the property enhancement is attributed to the adsorption interactions of Ag/PDA/MoS 2 , which restrict the movement of the PTFE molecular chains, thereby reinforcing the mechanical strength and wear resistance of the polymer matrix. During friction, Ag/PDA/MoS 2 underwent adsorption, diffusion, and interlayer sliding. Owing to the adhesive nature of PDA, a protective tribofilm composed of Ag, PDA, and PTFE was formed on the friction surface to achieve a multicomponent synergistic lubrication effect. Thus, these composites exhibit significant potential for oil-free, self-lubricating, high-end engineering applications. Highlights Dopamine polymerization yields a spherical-layer composite structure. Hybrid fillers restrict polymer chain motion to increase tensile strength. Composite components synergistically form a robust lubricating film. The composite delivers excellent wear resistance at various temperatures. Filler addition increases the matrix elastic modulus across broad temperatures.
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CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Biao Feng,Chengzhang Yao,Siyu Chen,Rui Luo,Shuhui Liu,Shanshan Tong
The design and synthesis of efficient adsorbing materials for recovery of precious metal are of paramount importance for fulfilling high-tech industry’s need. Herein, a one-step hydrothermal synthesis method was employed to construct the sulfur-rich MoS 2 nanoflakes under a mild condition. The first experiment evidence proved that MoS 2 nanoflakes were capable of capturing gold, with an extremely high uptake capacity (1133 mg g −1 ) and excellent selectivity. More importantly, MoS 2 nanoflakes showed preferential Au 3+ uptake behaviour compared with other precious metal ions such as Pd 2+ (47.6 mg g −1 ) and Pt 4+ (38.5 mg g −1 ). Different factors affecting the sorption process such as pH, adsorbent amount, contact time, ion strength , and reusability were systematically studied. The adsorption mechanism may be attributed to their intrinsically sulfur-rich characteristic for the strong soft–soft interactions between S atoms and Au atoms. These findings open up the possibility to expand the applications of sulfur-rich nanomaterials in the recovery of precious metal.
研究领域:
材料科学
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环境化学
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纳米技术
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资源回收
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配位化学
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危险品化学品经营许可证（带存储）