CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yunfei Zhang,Junfeng Niu,Jianhui Xu
In this study, it was demonstrated that the Fe ion was an effective promoter of bulk MoS 2 for the activation of peroxymonosulfate (PMS) to degrade acetaminophen (ACT). ACT removal rate constant in the presence of 5 mg/L FeSO 4 ·7H 2 O (0.1099 min −1 ) was approximately 20 times as that in the absence (0.0045 min −1 ) with 0.1 g/L MoS 2 of FeSO 4 ·7H 2 O at pH 0 3. Both electron paramagnetic resonance (EPR) characterization and quenching experiment suggested the key role of singlet oxygen ( 1 O 2 ), acting as dominant reactive species responsible for ACT degradation in the Fe 2+ /MoS 2 /PMS system. Besides, the chemical state and composition of MoS 2 , the ion (Fe and Mo) concentrations and the speciation of Mo(VI) were investigated. Results suggested that the promoting effect of Fe(II) ion originated from the regeneration of Fe 2+ mediated by MoS 2 , and the formation of molybdenum(VI) peroxo complex species in Fe 2+ /MoS 2 /PMS system. The present study not only provides an insight into PMS activation by MoS 2 accelerated by Fe(II) ion, but also suggests an high-efficiency, easy-to-handle and environmentally friendly method to treat refractory wastewater.
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高影响因子
Advanced Materials Interfaces
·
2017
·Vol. 4
·期 7
·1601228
·
IF 4.279
Mingkai Liu,Yuqing Liu,Buzheng Tang,Peng Zhang,Yan Yan,Tianxi Liu
Hierarchical 3D graphene nanoribbons/carbon nanotubes–molybdenum disulfide (GR/CNT-MoS 2 ) nanocomposites have been facilely and controllably prepared. The GR/CNT matrix, which is prepared by partial unzipping of multiwalled CNTs, possesses good conductive networks by bridging graphene nanoribbons on different CNTs. MoS 2 with monolithic morphologies is anchored on the GR/CNT conductive networks, achieving the formation of hierarchical GR/CNT-MoS 2 nanocomposites. As a result of the good dispersion of MoS 2 , a large specific surface area (238 m 2 g −1 ) of GR/CNT-MoS 2 nanocomposite has been achieved. Excellent electrochemical performance including high specific capacity (1245 mA h g −1 ) and good cycling stability (90.9% capacity retention after 200 cycles) of the GR/CNT-MoS 2 nanocomposites is achieved due to the full exposure of the active sites of MoS 2 nanoflakes, and high electron transport ability of the GR/CNT substrate. These novel GR/CNT-MoS 2 nanocomposites show promising application in lithium ion batteries, and further provide a new way to design and develop new anode materials.
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2017
·Vol. 19
·期 5
·3837-3844
·
IF 4.123
Feifei Jia,Xian Zhang,Shaoxian Song
The adsorption of Hg2+ on natural molybdenum disulfide has been studied using atomic force microscope (AFM). The AFM imaging clearly illustrated the adsorption of Hg2+ on the surface of molybdenum disulfide, and also hydration layers on the surfaces. It was found that the presence of a hydration layer on molybdenum disulfide surfaces hindered the Hg2+ adsorption. Also, it was observed that the Hg2+ adsorbed appeared in the form of multilayers. The first adsorbed Hg2+ layer might be mainly attributed to the complexation of Hg2+ with S atoms exposed on molybdenum disulfide surfaces, while the second one might be due to the electrostatic interaction between negatively charged molybdenum disulfide and the cation Hg2+.
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高影响因子
Polymers
·
2024
·Vol. 16
·期 13
·1940
·
IF 4.7
Kuo Zhao,Yunbo Shi,Mingrui Cui,Bolun Tang,Canda Zheng,Qinglong Chen,Yuhan Hu
High sensitivity and selectivity and short response and recovery times are important for practical conductive polymer gas sensors. However, poor stability, poor selectivity, and long response times significantly limit the applicability of single-phase conducting polymers, such as polypyrrole (PPy). In this study, PPy/MoS2composite films were prepared via chemical polymerization and mechanical blending, and flexible thin-film resistive NO2sensors consisting of copper heating, fluorene polyester insulating, and PPy/MoS2sensing layers with a silver fork finger electrode were fabricated on a flexible polyimide substrate using a flexible electronic printer. The PPy/MoS2composite films were characterized using X-ray diffraction, Fourier-transform infrared spectroscopy, and field-emission scanning electron microscopy. A home-built gas sensing test platform was built to determine the resistance changes in the composite thin-film sensor with temperature and gas concentration. The PPy/MoS2sensor exhibited better sensitivity, selectivity, and stability than a pure PPy sensor. Its response to 50 ppm NO2was 38% at 150 °C, i.e., 26% higher than that of the pure PPy sensor, and its selectivity and stability were also higher. The greater sensitivity was attributed to p–n heterojunction formation after MoS2doping and more gas adsorption sites. Thus, PPy/MoS2composite film sensors have good application prospects.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Xiao Wang,Yuxin Jin,Hongguo Zhang,Qiong Wu
Ion-intercalated MoS2 can enhance its electrochemical activity, electrical conductivity, and stability, which can be combined with other materials to meet specific application requirements, such as the fields of electrochemistry and microwave absorption. This study explored the modulation of electromagnetic characteristics of ion-intercalated MoS2-based ternary FeCoNi alloy nanocomposites, in which MoS2 provides more contact sites for an electromagnetic wave, and the heterogeneous interfaces formed by the heterogeneous structure can improve the stronger interface polarization to enhance the dielectric loss. In addition, by inserting nano-FeCoNi alloy particles into the interlayers of MoS2, the FeCoNi alloy also enhanced the magnetic loss capabilities, in which the impedance matching of FeCoNi/MoS2 composites was also regulated. The results show that the FeCoNi/MoS2 composite achieved a minimum RL (RLmin) value of −54.73 dB at 4.20 GHz with a matching thickness of 3.29 mm, and the effective absorption bandwidth (EAB) was 4.72 GHz at a thickness of 1.32 mm. In addition, the radar cross section (RCS) and COMSOL simulation results verify the possibility of application. The study revealed the microwave loss mechanisms of the FeCoNi/MoS2 heterostructured composites, providing insights for designing novel low-frequency absorbing materials.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Hailin Zheng,Demin Zhu,Chengyi Xiong,Xiquan Hu,Miao-Miao Chen,Shengfu Wang,Yao Xiao,Xiuhua Zhang
Structure defects of advanced two-dimensional (2D) transition metal dichalcogenides (TMDCs) have provided enormous opportunities for modified band structures and fascinating properties to facilitate the development of fundamental studies, among which intrinsic defects can be spontaneously introduced to 2D materials to expand the functional diversity. Except for unary intrinsic defects, structure–activity relationships of multiplex intrinsic defects and modulated properties still remain to be released for practical applications. Herein, binary intrinsic defects in exfoliated molybdenum disulfide (MoS 2 ), including sulfur monovacancies and oxygen substitution, were studied for revealing the sensing mechanism of 2,4,4′-trichlorobiphenyl (PCB28). They theoretically tended to form homosteric associated pairs and promote molecular anchoring synergistically. Appropriate molecular adsorption and efficient electron transfer enabled the excellent sensing performances for PCB28 including considerable linear region of 100 ng mL −1 ∼ 1 mg mL −1 and low detection limit of 7.96 ng mL −1 , which was also inspirable for the design of other small-molecule sensors.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Weiquan Zhan,Yuan Yuan,Qizheng Weng,Yanan Pan,Shaoxian Song,José Luis Arauz-Lara,Feifei Jia,Wencai Zhang
Separation and recovery of trace gadolinium(III) from rare earth elements (REEs) with similar properties is increasingly crucial for renewable energy resources and sustainable development. This study proposed a method to regulate the chemisorption activity of gadolinium(III) using defects-rich molybdenum disulfide (DR-MoS 2 ) electrodes, enabling the separation and recovery of gadolinium(III) from aqueous solutions. Lanthanum(III), gadolinium(III), and yttrium(III), representing light, medium, and heavy REEs respectively, were selected to investigate their adsorption behaviors of on MoS 2 and DR-MoS 2 electrodes at low concentrations. Experiments and simulation results verified distinct adsorption behaviors of REEs on MoS 2 , influenced by their out-shell electron binding capabilities. Interestingly, gadolinium(III) exhibited a unique interaction where its f orbitals strongly interacted with p orbitals of unsaturated sulfur atoms, unlike the other REEs, facilitating effective separation and recovery of gadolinium(III). Furthermore, increased binding affinity enhanced the electric double layer capacity (EDLC) and reduced electrons immigration resistance. Consequently, DR-MoS 2 electrodes achieved 100% recovery of trace gadolinium(III) recovery with high separation efficiency. Hopefully, strongest lanthanum(III) interaction with unsaturated Mo atoms was expected to realize lanthanum(III) separation and recovery. This study presented a promising approach to selectively recover target REEs from similar elements through modulating the chemisorption.
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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.
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Small
·
2025
·
IF 12.1
Xiaohan He,Weiwen Xin,Pengbo Song,Shicheng Wan,Chaowen Yang,Yongbo Deng,Liuyong Shi,Teng Zhou,Liping Wen
Osmotic energy, a clean and renewable energy source, holds vast potential at the confluence of rivers and seas. 2D nanofluidic membranes offer a promising avenue for its efficient harvesting, yet their practical application is hampered by insufficient power density. Here we report a photoresponsive 2D nanofluidic membrane constructed by intercalating molybdenum disulfide with cotton nanofibers to form a stable composite structure. Under 50- and 500-fold salinity gradients, the membrane achieves power densities of 6.48 and 13.57 W m − 2 , respectively. By introducing asymmetric illumination on the low-concentration side, we create asymmetric temperature and charge gradients, which substantially enhance the osmotic energy conversion performance. Under a light intensity of 220 mW cm − 2 , the membrane achieves a power density of 9.93 W m − 2 , representing a 53% increase compared to non-illuminated conditions. This enhancement is accompanied by a 62% rise in the short-circuit current and an 8% increase in the open-circuit voltage. In tests using real seawater, the membrane delivers a power density of 6.06 W m − 2 , a 67% improvement over the non-illuminated condition. This study establishes a new strategy for highly efficient osmotic energy harvesting and demonstrates the potential of light-assisted osmotic energy conversion in practical marine environments.
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高影响因子
NANOTECHNOLOGY
·
2025
·Vol. 36
·期 42
·425601
·
IF 2.8
Jie Jiang,Shikai An,Buruli Dulaiti,Huilin Song,Shuqiang Li,Xiaoyan Zhang,Tongwei Han
A novel ternary nanostructure comprising a two-dimensional nanosheet, polymer carbon material, and transition metal nanoparticle was developed for supercapacitor applications. The MoS2/PZSC/Fe3O4 composite was synthesized and carbonized through in-situ growth of poly(cyclotriphosphazene-co-4,4’-sulfonyldiphenol) Polyphosphazene (PZS) and ferroferric oxide (Fe3O4) onto Molybdenum disulfide (MoS2) layers. This composite effectively combines the individual advantages of each constituent. The pseudocapacitive performance of MoS2/PZSC/Fe3O4 was thoroughly evaluated, revealing a maximum specific capacitance of 433.3 F g−1 at a current density of 2 A g−1. Furthermore, an asymmetric supercapacitor was assembled using MoS2/PZSC/Fe3O4 as the negative electrode, achieving an energy density of 25.6 Wh kg−1 at a power density of 400 W kg−1, with good cycling stability. These results highlight the significant potential of MoS2/PZSC/Fe3O4 as a promising material for supercapacitor applications.
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高影响因子
FOOD CHEMISTRY
·
2019
·
IF 5.399
Pei Jia,Tong Bu,Xinyu Sun,Yingnan Liu,Jinghan Liu,Qinzhi Wang,Yuhang Shui,Shuwen Guo,Li Wang
The wide use of tetracyclines (TCs) for prevention and therapy of animal diseases may result in excessive residues in animal products, which could pose serious risks to human health. A novel molybdenum disulfide nanoplates (MoS 2 NPs)-based fluorescent sensor for tetracycline (TET) is reported. The MoS 2 NPs, synthesized via a facile bottom-up hydrothermal route, showed blue fluorescence at 430 nm in aqueous solution. Interestingly, its fluorescence was quenched significantly upon addition of TET, which is mainly due to a combination of the inner filter effect and electron transfer. Thus, the MoS 2 NPs based fluorescence sensor was delineated for the detection of TET. The methodology here presented showed a low detection limit of 0.032 μM and satisfied recoveries from 88.46% to 108.62% in spiked milk, milk powder and bovine muscle samples.
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PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 117
·96660-96664
·
IF 3.84
Sheng Han,Yani Ai,Yanping Tang,Jianzhong Jiang,Dongqing Wu
Two-dimensional molybdenum disulfide/graphene hybrids wrapped in carbonized polyaniline (MCGs) have been constructed by the in situ growth of molybdenum trisulfide nanoparticles on polyaniline decorated graphene oxide nanosheets and the following carbonization. When the resulting hybrids were used as anode materials in lithium ion batteries, the carbonized polyaniline can effectively prevent the pulverization of MoS2 caused by the inner-plane volume expansion. It turns out that MCG-600, the sample thermally treated at 600 °C, manifests a capacity of 785 mA h g−1 after 300 cycles at the current density of 200 mA g−1 and a capacity of 724 mA h g−1 even at a high current density of 1 A g−1.
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危险品化学品经营许可证（带存储）