MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 3
·1-9
·
IF 6.408
Wang Shuang,Wang Chen,Xin Yuxiao,Li Qiuyun,Liu Weilu
A novel electrochemical sensor is reported for the detection of the antiviral drug favipiravir based on the core–shell nanocomposite of flower-like molybdenum disulfide (MoS 2 ) nanospheres and molecularly imprinted polymers (MIPs). The MoS 2 @MIP core–shell nanocomposite was prepared via the electrodeposition of a MIP layer on the MoS 2 modified electrode, using o-phenylenediamine as the monomer and favipiravir as the template. The selective binding of target favipiravir at the MoS 2 @MIP core–shell nanocomposite produced a redox signal in a concentration dependent manner, which was used for the quantitative analysis. The preparation process of the MoS 2 @MIP core–shell nanocomposite was optimized. Under the optimal conditions, the sensor exhibited a wide linear response range of 0.01 ~ 100 nM (1.57*10 −6 ~ 1.57*10 −2 μg mL −1 ) and a low detection limit of 0.002 nM (3.14*10 −7 μg mL −1 ). Application of the sensor was demonstrated by detecting favipiravir in a minimum amount of 10 μL biological samples (urine and plasma). Satisfied results in the recovery tests indicated a high potential of favipiravir monitoring in infectious COVID-19 samples. Graphical abstract
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Baocang Liu,Yan Cheng,Bo Cao,Minghao Hu,Peng Jing,Rui Gao,Yaping Du,Jun Zhang,Jinghai Liu
A multicomponent 3D monolithic electrode was designed that consists of Co single atoms anchored/nitrogen, sulfur co-doped carbon nanotubes (CoSAs-NS-CNTs) on carbon cloth (CC) with ultra-thin MoS 2 nanosheets externally decorated and ultra-small CoS 2 nanodots internally confined (MoS 2 /CoSAs-NS-CNTs@CoS 2 /CC) to form a hybrid heterojunction electrode with double interfaces as vectorial electron transport pathways for promoting electrocatalytic performance. The integration of well-distributed MoS 2 nanosheets and CoS 2 nanodots linked with Co single atoms anchored/N, S co-doped CNTs endows abundant multiple active sites, outstanding conductivity, and the downshifted d-band center with a thermodynamically favorable hydrogen adsorption free energy (ΔG H* ) for effectively catalyzing hydrogen evolution reaction (HER). As a result, the optimal MoS 2 /CoSAs-NS-CNTs@CoS 2 /CC electrode exhibits outstanding HER performance with overpotentials of 72 and 56 mV at 10 mA cm −2 and small Tafel slopes of 59.4 and 43.2 mV dec -1 in acidic and alkaline solutions, respectively, outperforming most of the previously reported molybdenum/cobalt sulfide-based electrocatalysts. Moreover, the electrode also displays good durability and stability reflected from the small decrease on activity after 5000 CV cycles and nearly no decay in current density after electrolysis for 20 h.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Pengfei Pang,Xia Teng,Meng Chen,Yanli Zhang,Hongbin Wang,Chun Yang,Wenrong Yang,Colin J. Barrow
An ultrasensitive enzyme-free electrochemical immunosensor was developed for microcystin- LR (MC-LR) detection based on a unique competitive detection scheme using molybdenum disulfide (MoS 2 ) nanosheets/BSA-stabilized gold nanoclusters (AuNCs) composite and Au core/Pt shell nanoparticles (Au@PtNPs). MoS 2 /AuNCs nanocomposite was used for a platform for immobilizing more antibody due to its large surface area and excellent biocompatibility. This enzyme-free immunosensor is coupled with a robust immunosandwich format employing Au@PtNPs-labeled antibody as a non-enzymatic reporter. Due to high catalytic efficiency and good stability of Au@PtNPs, Au@PtNPs-immobilized antibody competed for target antigen to form an antibody-antigen immunocomplex and further amplified the electrochemical signal. Thus, the concentration of the MC-LR is directly proportional to the electrochemical signal of immunosensor. Under optimized conditions, the proposed enzyme-free immunosensor was employed to detect MC-LR and exhibited a wide linear range of 1.0 ng L −1 –1.0 mg L −1 with low detection limit of 0.3 ng L −1 ( S/N = 3). This ultrasensitive and high specific nonenzymatic electrochemical immunoassay shows promising application in environmental and food monitoring.
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INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2020
·
IF 4.845
Shundong Cai,Jianhua Yan,Hongjie Xiong,Qing Wu,Hang Xing,Yanfei Liu,Song Liu,Zhenbao Liu
Molybdenum disulfide (MoS 2 ), one representative 2D nanomaterial, has recently emerged as a unique platform in the biomedical field. However, its application in drug delivery systems should be further exploited. Here, we report a novel tumor cell targeting and lysosomal acidic environment/NIR laser dual responsive drug delivery system for synergetic chemo-photothermal treatment of cancer cells. The MoS 2 nanosheets were loaded with chemotherapy drug doxorubicin (DOX) and coated with polydopamine (PDA) layer. Then, thiolated aptamer AS1411 and polyethylene glycol (PEG) were modified onto MoS 2 nanosheets through Michael addition reaction to construct [email protected] 2 nanosheets. The aptamer modification endowed the nanoplatform with targeting ability to breast cancer MCF-7 cells. MoS 2 and PDA converted 808 nm NIR laser into heat and played the role of photothermal therapy (PTT). Tumor lysosomal acidic environment and NIR laser irradiation accelerated the release of DOX from the nanosheets. The nanocarrier Apt-PEG-PDA-MoS 2 showed good biocompatibility, and [email protected] 2 showed synergetic chemo-photothermal therapy effects with significantly enhanced anti-tumor efficacy, suggesting that this MoS 2 -based drug delivery platform is promising for targeted and synergetic treatment of cancer.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Juan Yu,Xiaoxu Tian,Hao Zhang,Jiale Fan,Junkai Zhao,Zhiyuan Ma
Molybdenum disulfide (MoS 2 ) has a unique layered structure, and its large interlayer spacing facilitates the insertion and extraction of lithium ions. However, due to the instability of its electrode material structure and slow electron/ion diffusion rate, it exhibits poor cycling stability and low rate performance, which limits its application in lithium-ion batteries. Therefore, optimizing the design of high-performance molybdenum disulfide based materials for lithium-ion battery anodes remains a major challenge in current research. This article uses polyvinylpyrrolidone (PVP) as a soft template and graphite ball milled with PVP as a hard template to synthesize a nitrogen doped carbon coated MoS 2 composite material (MoS 2 /PG) grown on graphite by hydrothermal method. In the prepared composite material, MoS 2 exhibits a flower ball shape with a diameter of about 230 nm. Through the connection of the interface carbon layer, MoS 2 can grow uniformly and firmly on the graphite surface. This structure plays a crucial role at the microscale, not only promoting the ordered growth of MoS 2 on the surface of modified graphite, but also providing stable mechanical support for it. This small particle size and unique growth structure play an important role in its excellent electrochemical performance, as they not only provide rapid electron transfer and ion diffusion, but also effectively alleviate the volume change of MoS 2 during repeated charge and discharge processes. The MoS 2 /PG electrode exhibits excellent cycling and high rate performance, maintaining a specific capacity of 345.21 mAh g −1 after 1000 cycles at a current density of 1 A g −1 , with a capacity retention rate of up to 80.77 %; At a cycle rate of 5 C, the average specific capacity is 364.44mAh g −1 .
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MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Yuan Peng,Si-Yuan He,Fang-Huan Wang,Hao-Bo Zheng,Zhe Meng
In this work, a magnetic mesoporous molybdenum disulfide/graphite nanosheets (mm-MoS 2 /GN) was successfully synthesized and applied to magnetic solid phase extraction (MSPE) of 13 polycyclic aromatic hydrocarbons (PAHs) from edible oil samples. The prepared mm-MoS 2 /GN was characterized by FT-IR, XRD, VSM, BET, SEM and TEM. The influence of various parameters such as the adsorbent mass, adsorption/desorption time, and elution solvent through response surface methodology in MSPE was investigated. The porous and fluffy structure with rich active sites (π interactions, electrostatics, hydrogen bonds) and amphiphilicity properties of mm-MoS 2 /GN make it an ideal material for the separation and enrichment of trace PAHs in edible oils. Under optimal MSPE and GC-MS conditions, the linearity ranges of the proposed method were 1.0–100.0 μg·kg −1 with a satisfactory correlation coefficient above 0.9907. The limits of detection and quantification for 13 PAHs were 0.10–2.50 μg·kg −1 and 0.85–5.00 μg·kg −1 , respectively. The intra- and inter-day precisions were less than 3.0 % and 3.6 %, respectively. The recoveries for spiked edible oil samples ranged from 70.2 % to 112.6 % with RSDs of less than 5.8 %. In this work, a novel, rapid, economic and effective method was proposed, and successfully applied to detect polycyclic aromatic hydrocarbons in several oil samples from local market.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Xiangfei Geng,Yang Yang,Zhiming Wu,Cong Zhang,Bin Ding,Weidong Liu,Qun Zhang,Baoshan Guan
Alkane-modified molybdenum disulfide (AM-MoS 2 ) nanosheets have attracted widespread interest as oil displacement agents for enhancing oil recovery due to their unique oil-water interfacial properties . However, the relationship between the interfacial activity and alkyl chain structure of AM-MoS 2 is not comprehensively understood. In this study, 3AM-MoS 2 nanosheets were prepared with MoS 2 and alkylamines to study the effect of alkyl chain length on the oil-water interfacial activity of AM-MoS 2 nanosheets under different salinity conditions. The AM-MoS 2 nanosheets prepared with octylamine, dodecylamine, and octadecylamine were referred to as AM 8 -MoS 2 , AM 12 -MoS 2 , and AM 18 -MoS 2 , respectively. AM 18 -MoS 2 , which possesses the longest alkyl chain among all the samples, exhibited the highest oil-water interface adsorption ratio within the experimental concentration and salinity ranges. However, the changes in oil-water interfacial tension (IFT) did not agree with the changes in the interface adsorption ratio of nanosheets. AM 18 -MoS 2 exhibited the best interfacial activity, and the IFT was lower than that of MoS 2 , AM 8 -MoS 2 and AM 12 -MoS 2 when the salinity was no more than 5000 mg/L, while AM 12 -MoS 2 and AM 8 -MoS 2 exhibited the best interfacial activity and the lowest IFT when the salinity reached 10,000 mg/L and 20,000 mg/L, respectively. Considering that the interface adsorption ratio of AM 18 -MoS 2 was higher than that of the other samples under all the experimental conditions, the change in IFT and interfacial activity could be attributed to the change in the morphology of the adsorption layer of nanosheets. The decreased charge repulsion and the increased hydrodynamic size of nanosheets, which resulted from increased salinity, had positive and negative effects, respectively, on the morphology of the adsorption layer. The competition between the two effects resulted in the inflection point in the relationship between the IFT and salinity of AM-MoS 2 . The AM-MoS 2 nanosheets with the optimum alkyl chain length balanced the dispersity and hydrophobicity , which contributed to achieving the best interfacial activity at a certain salinity.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Luping Feng,Yujie Fan,Haoran Li,Jing Liu,Jun Xu,Fangrong Zhou,Qingzhe Wang,Jianghong Wang,Enjun Chen,Xinfeng Li,Lixiang Zhang,Hua Wang
An efficient hybrid nanozyme was synthesized through in-situ growing two-dimensional (2D) MoS 2 nanosheets (NSs) onto three-dimensional (3D) Co 1-x S nanocubes (NCs) by one-pot hydrothermal method. This novel heterostructure was found to exhibit much enhanced peroxidase-mimetic catalytic activities compared to pristine Co 1-x S NCs and MoS 2 NSs, due to the accelerated charge transfer facilitated by the 3D/2D interfacial coupling. The core mechanism underlying this enhancement involves synergistic interaction between Co 1-x S and MoS 2 , which promotes electron transfer and increases the generation of reactive oxygen species ( • OH radicals), thereby improving catalytic efficiency. Importantly, the catalytic activity of the Co 1-x S/MoS 2 hybrid nanozyme can be selectively inhibited by sulfide ions (S 2− ) due to competitive utilization of • OH radicals and reduction of oxidized TMB substrate by S 2− . As a result, an efficient catalysis-based colorimetric detection method was developed for S 2− analysis in environmental water samples. Profiting by the cooperative effect between two components as well as the accelerated electron transfer of as-prepared hybrid nanozyme, the developed colorimetric detection method can achieve a wider linear range (0.10–50 μM), a low limit of detection (LOD, 0.021 μM), and excellent recovery rates (98.3%–104.0%) in real water samples, highlighting its potential for practical applications in water safety assessment. This study provides a novel strategy for designing high-performance nanozymes with 3D/2D heterostructures for environmental sensing applications.
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Analytical Methods
·
2020
·Vol. 13
·期 5
·672-684
·
IF 2.596
Xiao-Chun Ma,Zong-Qin Ma,Meng-Xin Zhao,Ying-Hui Wang,Yuan Peng,Xin Guo,Fang-Huan Wang,Zhe Meng,Hao-Bo Zheng
A novel magnetic molybdenum disulfide@graphene (Fe3O4/MoS2@G) nanocomposite with amphiphilic properties was prepared via a co-mixing solvothermal method. To demonstrate the feasibility of Fe3O4/MoS2@G as a sorbent during sample preparation, it was employed for the magnetic solid phase extraction (MSPE) of ten pyrethroids, three triazoles and two acaricide pyridaben and picoxystrobin in an emulsified aqueous solution. Dichloromethane was used as the extractant to form an emulsified aqueous solution. Subsequently, the Fe3O4/MoS2@G sorbent with amphiphilic properties was used to retrieve 15 wide polarity insecticides from dichloromethane via MSPE. The proposed method has the advantage of being applicable to different polar pesticides, strengthening the capacity of enrichment and purification of target analytes. The π–π interaction between the hydrophilic and hydrophobic moieties of Fe3O4/MoS2@G and the aromatic rings of target analytes were responsible for the efficient sorption. Thus, a reliable, convenient, and efficient method for the analysis of 15 insecticides with wide polarity in wolfberry samples was established by coupling Fe3O4/MoS2@G nanocomposite MSPE with gas chromatography-mass spectrometry (GC-MS) analysis. The obtained linearity of this method was in the range from 1 to 5000 ng mL−1 for 15 analytes, with determination coefficients (R2) ≥0.9907. The limit of detection (LOD) for 15 insecticides was in the range from 0.1 to 5.0 ng g−1. The recoveries of 15 insecticides from spiked wolfberry samples were in the range from 71.41% to 110.53%, and RSD was less than 14.8%.
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Journal of the Taiwan Institute of Chemical Engineers
·
2018
·
IF 3.849
Qiang Huang,Jiao Zhao,Meiying Liu,Yan Li,Jiayuan Ruan,Qing Li,Jianwen Tian,Xiaoli Zhu,Xiaoyong Zhang,Yen Wei
In present work, novel polyacrylamide immobilized molybdenum disulfide (MoS 2 @ [email protected] ) composites were synthesized via the mussel-inspired chemistry and surface initiated atom transfer radical polymerization (SI-ATRP). The as-prepared MoS 2 @ [email protected] composites were characterized by energy dispersive X-ray spectroscopy (EDX), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). Characterization results provide sufficient evidences for the successful functionalization of MoS 2 with PAM. The products were used as adsorbents for removing of copper (II) ions. Results show the introduction of PAM onto MoS 2 could enhance the adsorption capacity of MoS 2 @ [email protected] towards copper (II) ions. The amount of adsorbed copper (II) ions by MoS 2 @ [email protected] composites is 2.5 times that of pristine MoS 2 . The effects of various experimental factors on the adsorption process, including contact time, initial copper (II) ion concentrations, solution pH and temperature, were also studied in this work. The batch experiments show that the adsorption of copper (II) ions onto MoS 2 @ [email protected] is dependent on time, pH and temperature. The optimum solution pH is observed at pH 7 and the increase of temperature is favorable for the adsorption of MoS 2 @ [email protected] towards copper (II). Based on the experiment data, the adsorption kinetics, isotherms and thermodynamics were also investigated. The kinetics and isotherm studies show that pseudo-second-order kinetic and Freundlich isotherm models could well fit with the adsorption data. The thermodynamic results show that the adsorption of copper (II) ions on MoS 2 @ [email protected] is a spontaneous and endothermic process. The adsorption process is mainly governed by the chemisorption involving the electrostatic interaction and/or chemical chelation between copper (II) ions and amino groups on the surface of MoS 2 @ [email protected] Taken together, it is proven that the PAM can be immobilized onto the MoS 2 nanosheets via the mussel-inspired chemistry and SI-ATRP, and it can enhance the adsorption performance of MoS 2 @ [email protected] composites, which might be used as adsorbents to remove heavy metal ions in real environment treatment.
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ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Hanqin Gong,Feng Zheng,Jiahe Xu,Chencen Sun,Liangchao Gao,Pengfei Hu,Yang Li,Yu Gong,Qiang Zhen,Sajid Bashir
We first report a composite of molybdenum disulfide (MoS 2 ) nanoflake arrays (MNFs) and tungsten trioxide (WO 3 ) nanorod arrays (WNRs) directly grown on a copper (Cu) substrate. This composite is characterized in detail by scanning and transmission electron microscopes (SEM/TEM), X-ray diffraction (XRD), Raman and X-ray photoelectron spectroscopy (XPS). All of the evidences indicate that the obtained composite is a heterojunction. The supercapacitive properties of MNFs-WNRs composite heterojunction are measured systematically by using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) techniques. The heterojunction exhibits a high specific capacitance of 522 F g −1 at 0.5 A g −1 , a high capacitance retention (95%) after 5000 cycles and a low charge transfer resistance (1.0 Ω). And this kind of heterojunction has advantages of both MoS 2 and WO 3 , which can be a better candidate for supercapacitive electrode material .
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Huijie Qin,Tongwei Zhang,Lihong Bao,Bo Dang,Jianxi Li
In this research, iron tetroxide (Fe₃O₄) nanoparticles were in situ synthesized on the surface of molybdenum disulfide (MoS 2 ) via a radiation technique to fabricate a MoS₂@Fe₃O₄ hybrid. Notably, the tensile strength and elongation at break of ethylene vinyl acetate (EVA)/magnesium hydroxide (MH) composites were enhanced by 62.5% and 59.1%, respectively, with the addition of one part of the MoS₂@Fe₃O₄ hybrid, attributed to its excellent reinforcing effect. Simultaneously, the peak heat release rate (pHRR) and total heat release of the EVA/MH composite decreased by 45.9% and 14.4%, respectively, while the residue content increased to 43.4%. Furthermore, EVA/MH/MoS₂@Fe₃O₄ composites with one part of the MoS₂@Fe₃O₄ hybrid generated significantly fewer toxic gases (such as CO) compared to EVA/MH composites, demonstrating enhanced fire safety. This study underscores the potential of creating noble metal-free layered composites by integrating cost-effective and eco-friendly Fe₃O₄ co-catalysts, such as MoS₂@Fe₃O₄ hybrids, to improve the fire safety of EVA composites.
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危险品化学品经营许可证（带存储）