INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2015
·
IF 3.313
Le-Qing Fan,Gui-Jing Liu,Can-Yang Zhang,Ji-Huai Wu,Yue-Lin Wei
A mesoporous molybdenum disulfide/carbon (MoS 2 /C) composite with flower-like morphology resulting from the decoration of carbon by MoS 2 interlaced nanosheets was synthesized by a facile hydrothermal route, and utilized for the electrode material of supercapacitor . The morphologies and structures of materials were characterized by field emission scanning electron microscopy , X-ray diffraction, Raman spectrum and N 2 adsorption–desorption isotherm. Electrochemical properties of materials were evaluated by cyclic voltammetry , galvanostatic charge/discharge and electrochemical impedance spectroscopy tests of two-electrode supercapacitors . The results indicate that the complex of carbon and MoS 2 can increase the electrical conductivity and can get thinner MoS 2 nanosheets leading to the increment of specific surface area , which result in the improvement in the electrochemical performances of material. The specific capacitance of MoS 2 /C composite reaches 201.4 F g −1 at a current density of 0.2 A g −1 in a two-electrode supercapacitor , which is higher than those of pure MoS 2 and carbon. Additionally, the MoS 2 /C-based supercapacitor exhibits high rate capability and long cyclic durability.
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高影响因子
NANO
·
2025
·
IF 1.1
Zhenni Han,Zhe Kong,Xing Duan,Yan Zhou,Qiying Shen,Wei Duan,Jiawei Shen
The photothermal conversion efficiency (PCE) of nanomaterials is crucial in photothermal therapy (PTT). Molybdenum disulfide (MoS 2 ) and its nanocomposites have attracted considerable attention in cancer PTT due to their excellent near-infrared (NIR) absorption properties. In this study, a MoS 2 nanocomposite functionalized with both polyethylene glycol (PEG, M n ∼ 2 0 , 0 0 0 ) and dopamine (DA) was synthesized (MoS 2 -PEG20000@PDA), which simultaneously enhanced both the photothermal performance and biocompatibility. MoS 2 -PEG20000@PDA can raise the temperature to 5 7 . 5 ∘ C after 10 min of 808 nm (1.0 w/cm 2 ) NIR laser irradiation, with a PCE of 4 8 . 4 1 %. It also maintains excellent photothermal stability after five laser irradiation cycles. Furthermore, under 808 nm laser irradiation, MoS 2 -PEG20000@PDA significantly inhibits the proliferation of breast cancer cells, with cell viability decreasing from 88.40% (no laser treatment) to 13.41%. This study provides a new approach for the design of efficient PTT materials and demonstrates the great potential of MoS 2 -based materials in cancer treatment.
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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.
研究领域:
材料科学
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纳米科技
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表面工程
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摩擦学
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复合材料
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高影响因子
Advanced Composites and Hybrid Materials
·
2023
·Vol. 6
·期 2
·1-15
·
IF 20.1
Miao Baoji,Cao Yange,Zhu Qingsong,Nawaz Muhammad Asif,Ordiozola Jose Antonio,Reina Tomas Ramirez,Bai Zhiming,Ren Junna,Wei Fengchun
The signal crosstalk and electromagnetic interference (EMI) problems direly need to be resolved in the rapid development of modern microwave communication technology for a better working frequency and transmission power of electronic systems. Where the new absorbing materials such as molybdenum disulfide (MoS 2 )/titania (TiO 2 )/Ti 2 CT x and MoS 2 /Ti 2 CT x composites could meet the requirement of “thin, strong, light weight, and wide band” for excellent absorbing performance. In this work, a lighter Ti 2 CT x material was selected as the matrix, and MoS 2 was in-situ grown on Ti 2 CT x matrix by traditional hydrothermal method and microwave solvothermal method. The fabricated composite exhibited synergic effect of two-dimensional heterostructural interface and double dielectric elements, where a small amount of TiO 2 and a certain proportion of MoS 2 jointly improve the impedance matching of the composite material. In here, the extreme reflection loss (RL min ) can reach − 54.70 dB (with a frequency of 7.59 GHz, 3.39 mm thickness), and the maximum effective absorption bandwidth (EAB max ) can reach 4 GHz. Polyethylene glycol 200 was used as the solvent instead of water to make Ti 2 CT x less oxidized during the composite process, where the microwave heating would attain fast speed, short time, high efficiency, and uniform product. Since, the MoS 2 /Ti 2 CT x composite without oxidizing possessed a wider effective absorption bandwidth (EAB) at a thinner thickness, thus resulting in the excellent microwave absorption performance and confirming the validity and rationality of new microwave absorption materials.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Tianyu Yang,Yue Zhou,Jiamin Qi,Bin Li,Zewei Liu
Discharging pollutants containing toxic metal ions has become a global problem, and improper disposal of coffee grounds can also cause environmental pollution. In this work, 1T-MoS 2 @STC (Solvothermal Carbonization, STC) was prepared from coffee grounds and molybdenum disulfide by a one-step solvothermal method that is simple in operation, low in energy consumption and low in cost, which possesses efficient adsorption of Cr (VI) in wastewater. The 1T-MoS 2 @STC was characterized by SEM, TEM, XRD, XPS, Zeta potential, FTIR, and BET analyses. The results showed that MoS 2 was successfully loaded on coffee grounds. According to the pseudo-second order (R 2 = 0.99) kinetics model, chemisorption was the main cause of adsorption. The adsorption process followed the Langmuir (R 2 = 0.99) isothermal model, and the maximum adsorption capacity was 795.17 mg/g. The adsorption mechanism can be attributed to electrostatic interaction, redox reaction between Cr (VI) and active sites, and chelation between Cr (III) and hydroxyl. When 1T-MoS 2 @STC was applied to the treatment of actual water samples, the removal rate was also maintained at a high level (90%). In addition, 1T-MoS 2 @STC can maintain long-term stability (90 days) and low leaching of molybdenum (<3 mg/L) in wastewater. Therefore, in the treatment of chromium-containing wastewater, the 1T-MoS 2 @STC composite material simultaneously exhibited significant adsorption capacity, high interference resistance, stability and low leaching rate. This study provides a new efficient and stable Cr (VI) adsorbent and promotes the practical application of MoS 2 biomass derivatives composites in water purification.
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高影响因子
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
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2022
·
IF 5.168
Erdong Yao,Yuechun Wang,Hao Bai,Lianqi Sheng,Jianhua Guo,Junjian Li,Kun Zhang,Guolin Yu,Fujian Zhou
With the development of nanotechnology, nanomaterials have shown good potential for enhanced oil recovery , which is of great significance for oil and gas production. Compared with nanoparticles and nanoemulsions , nanosheets have higher interfacial activity due to their two-dimensional structure, which can form a climbing film on the interface of oil-water and efficiently improve oil recovery. However, the influencing factors of the film-climbing effect and the relationship between the film-climbing effect and enhanced oil recovery are still not clear. In this paper, small-sized water-soluble nanosheets which were molybdenum disulfide (MoS 2 ) nanosheets (30–50 nm) were synthesized using a one-step hydrothermal method , which have strong stability during the flooding test. And then, modifiers with different carbon chain lengths were used to modify the hydrophile-lipophile balance (HLB) of nanosheets. Next, the influencing factors of nanosheets' climbing film were discussed, and the two-phase height index was innovatively used to characterize the strength of the nanosheets climbing film in the oil-water system. The results show that the longer the carbon chain length of the modifier, the closer the nanosheets are to neutral wet with stronger interfacial activity. In addition, molybdenum disulfide nanosheets can produce a climbing film at the oil-water interface, which is related to salinity , concentration, and diameter of test jar. In a word, the oil displacement efficiency can be characterized by the two-phase height index, and the higher the index, the higher the oil displacement efficiency. This makes us fully realize the importance of climbing film in tertiary oil recovery, and provides a new method for the effective development of oil and gas resources.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
·
IF 9.136
Feifan Yu,Wenkai Song,Zenglong Wu,Wenxian Chen,Jinping Cui,Yuyuan Yao
The removal of heavy metal ions from industrial effluents by molybdenum disulphide (MoS 2 ) has attracted considerable attention, but developing the removal capacity of MoS 2 toward hexavalent chromium ions (Cr(VI)) in wastewater treatment is still a challenge. Herein, a cationic polyacrylamide aerogel (CPAMA) containing -N + (CH 3 ) 3 was creatively introduced as a precursor to synthesize the CPAMA intercalated MoS 2 (MoS 2 @CPAMA). The addition of CPAMA as carrier greatly improved the dispersion and the exposure of active sites of MoS 2 , and even the -N + (CH 3 ) 3 effectively increased the surface potential of MoS 2 , which facilitated the adsorption and reduction for Cr(VI). Notably, MoS 2 @CPAMA removed 95% of Cr(VI) within 50 min and the maximum Cr(VI) removal capacity reached 800.0 mg g −1 at 400 mg L −1 , which was significantly higher than that of MoS 2 (237.1 mg g −1 ) and almost all reported MoS 2 -based materials. The results of ICP-OES and UV–vis spectrophotometer revealed that both reduction and adsorption pathway were participated during the Cr(VI) removal process, while the reduction was obviously dominated. The results of XPS showed that the -N + (CH 3 ) 3 and amide groups played a significant role in adsorbing Cr(VI) onto the MoS 2 @CPAMA surface, and the Mo was oxidized from Mo 4+ to Mo 6+ and the S 2− was oxidized into S 6+ subsequently during the reduction of Cr(VI). Interestingly, MoS 2 @CPAMA could also be used as a co-catalyst in the Fe 2+ /PMS system, and the TOC removal rate of 67% in 60 min and the retention rate of 80% for Fe 2+ were achieved. Notably, MoS 2 @CPAMA possessed high durability in the co-existing cations and anions, and the 4-CP removal rate was still as high as 94% after four consecutive cycles, indicating the splendid reusability of MoS 2 @CPAMA. This study offers new insights into the development of multifunctional MoS 2 -based materials for wastewater treatment.
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高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Liangmei Rao,Yifu Zhu,Zhongshu Duan,Ting Xue,Xuemin Duan,Yangping Wen,Annamalai Senthil Kumar,Weiming Zhang,Jingkun Xu,Akbar Hojjati-Najafabadi
Biomass waste, a good candidate for advanced carbon materials for sustainable electrodes, is receiving more and more attention for high value-added materials because of its promising contribution to economic growth and sustainable development. We proposed a green co-hydrothermal approach to prepare lotus seedpods biochar (BC) decorated molybdenum disulfide (MoS 2 ) from waste lotus seedpods and precursors of MoS 2, and a portable, flexible, outdoor and inexpensive sensing platform for hyperin on the integrated flexible three-electrode using U-disk potentiostat with smartphone was successfully developed. Structure and properties of MoS 2 -BC were characterized, it was proved that BC improves microstructure and morphology, electronic conductivity, electrode stability and electrocatalytic properties of MoS 2 . Attributing to these impressive features, the detection signal of hyperin was significantly amplified by the MoS 2 -BC modified glass carbon electrode (GCE) in detection range of 0.01–21 μΜ with detection limit (LOD) of 5 nM. It was worth mentioning that the MoS 2 -BC modified screen-printed electrode (SPE) performs hyperin detection in range of 100 nM - 3 μM with LOD 50 nM (S/N = 3). The practicability of the proposed method confirmed that the portable, on-site, low-cost, and outdoor detection of hyperin was feasible and practical in comparison with traditional both electrochemical sensing and HPLC methods.
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DOI
PubMed
高影响因子
Sensing and Bio-Sensing Research
·
2023
·
IF 5.3
Jiawei Zhang,Cherie S. Tan,Chong Chen,Ziyue Qin,Jie Fu,Qiya Gao,Shuang Li
As a representative transition metal dichalcogenide, molybdenum disulfide (MoS 2 ) has unique electronic, optical, and mechanical properties that exhibit advantages in the construction of biosensing interfaces. In this study, we explored the construction of a MoS 2 -based aptamer sensor and investigated its application for high-precision detection of prostate specific antigen (PSA) in serum. Carboxyl group-modified MoS 2 was stably bonded to the surface of an aminated electrode as a substrate structure, and the electrode was further modified with biocompatible membrane polydopamine and PSA aptamers to form an aminated screen-printed electrode/carboxylated MoS 2 /polydopamine (SPE-NH 2 /MoS 2 -COOH/PDA)-based aptamer sensor, which achieved ultrasensitive detection of PSA at 0.001 pg/mL ∼ 1 ng/mL with a limit of detection (LOD) of 0.16 fg/mL. The detection results of related interfering substances, such as L-cysteine, alpha fetoprotein (AFP), carcinoembryonic antigen (CEA) and bovine serum albumin (BSA), proved that the sensor had good selectivity. Then, repeated test results of multiple sensors verified that the aptamer sensors had good reproducibility between sensors. Finally, the practical application of the aptamer sensor was evaluated by a blank spiking method, which demonstrated its great clinical application potential. In summary, our study has provided ideas for the application of MoS 2 composite-based aptamer sensing interfaces for potential precision medicine needs.
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高影响因子
Journal of Pharmaceutical Analysis
·
2021
·
IF 4.769
Juan Tan,Shiyue Wu,Qingqing Cai,Yi Wang,Pu Zhang
Regulating the catalytic activity of nanozymes is significant for their applications in various fields. Here, we demonstrate a new strategy to achieve reversible regulation of the nanozyme's activity for sensing purpose. This strategy involves the use of zero-dimensional MoS 2 quantum dots (MQDs) as the building blocks of nanozymes which display very weak peroxidase (POD)-like activity. Interestingly, such POD-like activity of the MQDs largely enhances in the presence of Fe 3+ while diminishes with the addition of captopril thereafter. Further investigations identify the mechanism of Fe 3+ -mediated aggregation-induced enhancement of the POD-like activity and the inhibitory effect of captopril on the enhancement, which is highly dependent on their concentrations. Based on this finding, a colorimetric method for the detection of captopril is developed. This sensing approach exhibits the merits of simplicity, rapidness, reliability, and low cost, which has been successfully applied in quality control of captopril in pharmaceutical products. Moreover, the present sensing platform allows smartphone read-out, which has promising applications in point-of-care testing devices for clinical diagnosis and drug analysis.
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DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 9
·2266-2274
·
IF 6.331
Wen Jing Yang,Xiaodong Wang,Rui Zhang,Yuxin Wang,Qiu Qiu,Lihui Yuwen,Lianhui Wang
A hybrid self-healing hydrogel (PM hydrogel), based on polyvinyl alcohol (PVA) and chemically exfoliated molybdenum disulfide (ce-MoS2) nanosheets, was prepared by a simple freeze–thaw method. Due to the excellent photothermal conversion properties of ce-MoS2 nanosheets, the PM hydrogel self-repaired rapidly under near infrared (NIR) light irradiation for only 3 min with a high healing efficiency of 91.8 ± 3.3%. The PVA content, ce-MoS2 nanosheet loading and light irradiation time played important roles in the self-healing performance. Additionally, the PM hydrogel also revealed good self-healing properties with a healing efficiency of 60.6 ± 3.6% after the cut surfaces were separated for 24 h. The present approach provides an effective strategy for fabricating fast light-triggered hydrogen-bond based self-healing systems. The as-prepared hybrid PM hydrogel has great potential as a soft biomaterial for long-term applications due to its biocompatibility and self-healing capability.
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DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2021
·Vol. 25
·期 6
·1871-1880
·
IF 2.647
Lv Xinrong,Wang Yanfang,Wang Ying-ao,Lin Xiaoyun,Ni Yongnian
In this work, the binary nanocomposite of crosslinked polyaniline nanorods (CPANINRs) and molybdenum disulfide (MoS 2 ) is first synthesized by in situ polymerization, and CPANINRs/MoS 2 on functionalized carbon cloth (CPANINRs/MoS 2 /FCC) is facilely constructed by a drop-casting method. The composition, morphology, and structure of the CPANINRs, MoS 2 , and CPANINRs/MoS 2 binary nanocomposite are characterized by transmission electron microscope (TEM), scanning electron microscope (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The electrochemical properties of the MoS 2 /FCC, CPANINRs/FCC, and CPANINRs/MoS 2 /FCC are tested by cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD). The experiment results show that the CPANINRs/MoS 2 /FCC exhibits excellent stability and high specific capacitance, and its specific capacitance reaches 618.75 F g −1 at a current density of 0.5 A g −1 . The CPANINRs/MoS 2 /FCC has a long cycling life and the capacity retention of 91.46% is obtained after 2000 cycles at a large current density of 10 A g −1 . Moreover, the CPANINRs/MoS 2 /FCC-based symmetric supercapacitor also exhibits excellent rate performance and good cycling stability. The specific capacitance based on the total mass of the two electrodes is 106.4 F g −1 at a current density of 0.5 A g −1 and the capacitance retention of 93.6% is obtained after 2000 cycles. Graphical abstract
A binary nanocomposite of crosslinked polyaniline nanorods (CPANINRs) and molybdenum disulfide (MoS 2 ) is first synthesized by in situ polymerization, and CPANINRs/MoS 2 on functionalized carbon cloth (CPANINRs/MoS 2 /FCC) was facilely constructed for applications in supercapacitors. The CPANINRs/MoS 2 /FCC exhibited excellent stability and high specific capacitance, and its specific capacitance reaches 618.75 F g −1 at a current density of 0.5 A g −1 .
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高影响因子
危险品化学品经营许可证（带存储）