NANOTECHNOLOGY
·
2019
·Vol. 31
·期 8
·085603
·
IF 3.399
Jianxun Zhao,Juanjuan Yin,Jinling Zhong,Tifeng Jiao,Zhenhua Bai,Sufeng Wang,Lexin Zhang,Qiuming Peng
The catalytic reduction of nitro compounds is currently a hot research area, how to efficiently and stably degrade such toxic and harmful substances has become the research goal of many researchers. In this work, an Artemia cyst shell (ACS)–TiO2–MoS2 ternary porous structure was proposed and prepared as a catalyst for the reduction of 2-nitroaniline (2-NA) and 4-nitrophenol (4-NP). The ACS has a large number of porous structures, exhibits a good binding ability with TiO2 and MoS2, and provides a large number of active sites for the catalytic reduction process. The obtained composite material has a good reduction effect on 4-NP and 2-NA, with a good stability and recyclability, which is obviously higher than the reduction effect of ACS–TiO2 and MoS2 under the same conditions. This work provides ideas for the design of porous catalytic materials.
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高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Mei Chen,Yinghui Jiao,Cizhi Chen,Yuanyuan Wang,Hongsheng Lu,Xiaozhen Dai
Growth differentiation factor 15 (GDF-15) is an important biomarker for the early diagnosis and prognostic evaluation of cardiovascular disease (CVD). Monitoring the expression level of GDF-15 in serum can enable early diagnosis evaluation of CVDs. Therefore, the realization of high-sensitivity GDF-15 detection platforms is clinically significant. To detect GDF-15, we developed a sandwich-type electrochemical immunosensor based on hydrogen peroxide (H 2 O 2 ) as a signal source. AuPtCu hexagonal metal nanoframes (AuPtCu HNFs) loaded onto molybdenum disulfide (MoS 2 ) nanosheets (MoS 2 -AuPtCu HNF) as secondary antibody labels provided signal amplification. The hollow three-dimensional hexagonal-shaped structure of the AuPtCu nanoframe exposed abundant active sites and exhibited excellent catalytic properties. MoS 2 nanosheets with flower-like structures and large specific surface areas can effectively load AuPtCu HNFs. The combination of AuPtCu HNFs and MoS 2 nanosheets enhanced the catalytic activity toward H 2 O 2 reduction and realized signal amplification. For the substrate material, two-dimensional Au triangular nanoprisms (Au TNPs) with two large surface planes were hybridized with graphyne (GDY) nanosheets. The obtained GDY-Au TNPs exhibited low catalytic activity and excellent electrical conductivity; therefore, they were used to load primary antibodies to effectively enhance the sensitivity. Under optimal conditions, the constructed immunosensor exhibited a wide detection range of 500 fg/mL to 50 ng/mL and low detection limit of 0.212 pg/mL. Moreover, the GDF-15 content in human serum was tested with satisfactory results. Therefore, the constructed immunosensor can sensitively and accurately detect GDF-15 for the early diagnosis of CVD.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Hang Zhao,Hao Wu,Jinhua Wu,Jianlong Li,Yujie Wang,Yun Zhang,Heng Liu
The two-dimensional transition metal dichalcogenides have wide application value in many fields. Herein, MoS 2 and WS 2 nanosheets are produced by liquid phase exfoliation method assisted by epigallocatechin gallate . The effects of epigallocatechin gallate concentration and stripping time are investigated by UV–vis. The morphology and structure characterization of exfoliated nanosheets are studied by XRD , Raman, SEM, HRTEM and AFM , the results showing that the nanosheets have few layers and the exfoliated solution is homogeneous dispersion and stable. The exfoliated nanosheets produced by 2 mg ml −1 epigallocatechin gallate solution for 12 h have five monolayers approximately, presenting a phase transformation from 2H to 1T structure of MoS 2 nanosheets. Then, Graphene aerogel composites are prepared with the exfoliated MoS 2 /WS 2 nanosheets, which loaded sulfur and employed as the cathode of Li-S batteries. TEM results reveal that MoS 2 /WS 2 nanosheets are embedded in reduced graphene oxide , and sulfur is evenly distributed in the composites. The composites containing MoS 2 /WS 2 nanosheets achieve outstanding electrochemical performance , during to the polysulfide adsorption capability of MoS 2 /WS 2 nanosheets and reducing the shuttle effect in Li-S batteries. It demonstrates a good application of exfoliated MoS 2 /WS 2 nanosheets in Li-S batteries.
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高影响因子
RSC Advances
·
2019
·Vol. 9
·期 6
·2997-3003
·
IF 3.049
Shuaihui Li,Yashen Ma,Yongkang Liu,Gu Xin,Minghua Wang,Zhihong Zhang,Zhongyi Liu
A three dimensional (3D) nanostructured composite based on the self-assembly of MoS2 nanospheres and polyaniline (PANI) loaded on reduced graphene oxide (denoted by 3D MoS2-PANI/rGO) was prepared via a feasible one-pot hydrothermal process. The 3D MoS2-PANI/rGO nanocomposite not only exhibits good functionality and bioaffinity but also displays high electrochemical catalytic activity. As such, the developed 3D MoS2-PANI/rGO nanocomposite can be employed as the sensing platform for simultaneously detecting small biomolecules, i.e., ascorbic acid (AA), dopamine (DA), and uric acid (UA). The peak currents obtained from the differential pulse voltammetry (DPV) measurements depended linearly on the concentrations in the wide range from 50 μM to 8.0 mM, 5.0 to 500 μM, and 1.0 to 500 μM, giving low detection limits of 22.20, 0.70, and 0.36 μM for AA, DA, and UA, respectively. Furthermore, the 3D MoS2-PANI/rGO-based electrochemical sensor also exhibited high selectivity, good reproducibility and stability toward small molecule detection. The present sensing strategy based on 3D MoS2-PANI/rGO suggests a good reliability in the trace determination of electroactive biomolecules.
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高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Yongxin Liu,Haohong Lai,Pingtao Ming,Pengsheng Chen,Shumei Wang,Haiyun Zhai
The accumulation of the deoxynivalenol (DON) in the human body poses a significant health risk that is often overlooked, and we urgently need an ultra-sensitive rapid detection platform. Due to the porosity of NH 2 -MIL-101@MoS 2 , an increased loading of toluidine blue (TB) serves to create a signal reference. Cobalt@carbon (CoC) derived from metal organic frameworks was combined with NH 2 -MIL-101(NH 2 -MIL-101@CoC) to form an enzyme-free Nanoprobe (Apt-pro) with significant catalytic properties. The ratio (I BQ /I TB ) was changed by varying the electrochemical signal of benzoquinone (BQ) (I BQ ) and the amount of TB deposition (I TB ). This aptasensor was successfully applied to detect DON in malt and peach seed , which exhibited a great linear range from 1 fg/mL to 10 ng/mL and low detection limit of 0.31 fg/mL for DON.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Aobo Wan,Ziwei Ren,Yun He,Yizhen Zhang,Shunxi Zhang,Min Tu,Jianfen Li,Ming Qiu
Developing efficient and stable bismuth-based photoelectrodes is one of the key points for producing green hydrogen in photocatalytic fuel cell (PFC). In this study, a PFC system with two photoelectrodes (a MoS 2 /Bi 2 S 3 /Bi 2 WO 6 photoanode and a MoS 2 -Ni foam photocathode) was established for the first time. The ternary Bi 2 WO 6 -based composite photoanode was characterized as having not only the broad visible absorption region but also strong interactions between Bi 2 WO 6 , Bi 2 S 3 and MoS 2 . Additionally, the ternary composite photoanode exhibits excellent photoelectrochemical performance, achieving a photocurrent density reaches 3.2 mA/cm 2 , which is 17.78 times that of pure Bi 2 WO 6 . These observations can be explained by the creation of a type II/Z-scheme heterostructure of MoS 2 /Bi 2 S 3 /Bi 2 WO 6 photoanode. The Density Functional Theory (DFT) simulation proves the formation of Z-scheme heterojunction between MoS 2 and Bi 2 S 3 , which offers an opportunity for facilitating the mitigation and separation of photoexcited charge. The dual-photoelectrode PFC system demonstrated an effective hydrogen production capacity, exhibiting an output of 18.32 μmol/cm 2 /h. At the same time, the power density was 0.1325 mW/cm 2 , exhibiting a 1.41-fold increase relative to the MoS 2 /Bi 2 S 3 /Bi 2 WO 6 -Pt PFC system. This work offers a novel method for building effective PFC systems that co-produce electricity and hydrogen.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Tongwei Zhang,Huijie Qin,Lihong Bao,Mingkao Xu,Bo Dang,Jianxi Li
Two-dimensional molybdenum disulfide (MoS 2 ) nanosheets are seen as highly promising nanofillers for enhancing polymer properties, yet there is a need for methods that are low-cost, simple, and environmentally friendly to facilitate the large-scale production of MoS 2 nanosheets. Furthermore, it is necessary to functionalize the MoS 2 surface to ensure good interfacial compatibility with the polymer matrix. In this study, MoS 2 @Ag@PA hybrids were created by generating silver nanoparticles directly on the surface of MoS 2 via radiation, followed by encapsulation on the surface of MoS 2 @Ag through the chelating properties of phytic acid. It is significant to note that, due to the excellent lubrication and physical cross-linking effects of the MoS 2 @Ag@PA hybrids, adding one part of MoS 2 @Ag@PA hybrids can enhance the melt flow rate and elongation at break of the ethylene vinyl acetate copolymer (EVA)/MH composites by 140% and 17.3%, respectively. The simultaneous addition of one part of MoS 2 @Ag@PA hybrids decreased the peak heat release rate, total heat release, and total smoke release of the EVA composites by 48.7%, 42.7%, and 41.2%, respectively. Moreover, the toxic gasses (e.g., CO) generated by burning EVA composites were significantly reduced compared to pure EVA, indicating improved fire safety. This research not only provides significant opportunities for the green mass production of MoS 2 nanosheets but also expands their potential applications in high-performance nanocomposites.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Qian Wang,Yali Ma,Ting Yang,Yang Jiao,Dajun Lang,Yongwei Huang,Liang Cheng,Tingting Wang
As a flammable and volatile liquid, ethanol is also a marker of diabetes in children that can be rapidly detected by gas sensors based on metal oxide semiconductors. However, reducing the operating temperature and achieving high response at ultra-low concentrations remain urgent tasks. In this study, N-doped p-type MoS 2 and MIL-125(Ti) -derived n-type TiO 2 were selected to construct p-n heterostructure with rich active sites and fast carrier transport, which further optimized the detection limit of ethanol gas at lower operating temperature. Compared with pure TiO 2 , the TiO 2 @N-doped MoS 2 composite with a MoS 2 mass ratio of 60 wt% exhibits significantly improved gas sensing properties for ethanol, including lower operating temperature (160 °C), higher response value (R a /R g = 9.229 at 100 ppm), and ppb-level detection limit (1.702 at 100 ppb), as well as good repeatability and stability. These improvements in sensing performance could be mainly attributed to the electronic effects of MoS 2 , the synergistic effect of p-n junctions, and the strong adsorption energy of TiO 2 @N-doped MoS 2 composites on the ethanol gas. This work suggests that the prepared TiO 2 @N-doped MoS 2 composites are promising materials for the highly efficient detection of ethanol.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yulian Chen,Fengmei He,Songwen Fang,Zhixiang Zhang,YongJin Zou,Cuili Xiang,Xiaojiang Mu,Lixian Sun,Fen Xu,Jianhua Zhou,Lei Miao
Interfacial solar-driven evaporation is considered an effective desalination technology to produce freshwater. However, salt accumulation severely slows or even stops water evaporation. In this study, a composite of porous carbon and MoS2 was loaded into a porous aerogel of poly(vinyl alcohol) (PVA)–chitosan (CS) by directed freezing to produce stable and salt-resistant interfacial evaporators. The obtained PVA–CS–C0.2–MoS2 composite aerogel (PC–C0.2M) exhibited excellent evaporation performance through the dual network structure of PC, which greatly facilitated water transport. In addition, the highly efficient absorbance (97.42%) of the porous carbon composite molybdenum disulfide (C0.2MoS2) also contributes to the efficient light-absorbing properties of PC–C0.2M. Thanks to its oriented porous structure, high light absorbance, and good wettability, PC–C0.2M achieved a water evaporation rate of 2.62 kg m–2 h–1 at 1 kW m–2 and a photothermal conversion efficiency of 92.14%. It also displayed outstanding salt resistance and can purify simulated seawater and dye-contaminated water. As a functional material capable of being used in multiple applications, aerogel material also serves as a support for loaded phase change materials through capillary forces and pore confinement. The excellent structure of PC–C0.2M provided a favorable carrier for the encapsulation of phase change materials (PCMs), which resulted in the enthalpy of melting and solidification of the PC–C0.2M composite paraffin wax (PW) PCM reaching 197.16 J g–1 and 206.42 J g–1, respectively. Furthermore, by combining aerogel with PCM, the evaporation rate of PC–C0.2M-co-PCM in a dark environment is 0.60 kg m–2 h–1, which is 2.22 times that of PC, enabling its excellent evaporation performance even at night. In summary, by exploiting PCMs to achieve rational utilization of solar thermal energy, the innovative integration of PCMs and photothermal materials in interface evaporation system provides a promising solution for evaporators to simultaneously achieve efficient energy storage and seawater desalination under intermittent solar radiation.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yushan Hou,Liping Cui,Qin Wang,Meilin Wang,Gang Li,Kai Yu
Keggin-type polyoxometalate (POM) is a new pseudocapacitive material with advanced multi-electron conduction capability, good mechanical and thermal stability. However, owing to the limited specific interfacial area and inferior conductivity of POMs, it is difficult to exert its excellent redox properties as an electrode material alone. In an effort to overcome these limitations, a heterostructured material MnPMo 8 V 6 @MXene/MoS 2 was developed using a combination of hydrothermal method and electrostatic adsorption, leveraging the synergistic self-assembly of multiple substances. The morphology and sufficient structural characterization reveal that Keggin POM and MoS 2 were homogeneously anchored on the accordion-like MXene leading to a triaryl composite. The resulting composites demonstrate improved overall performance and more efficient ion/electron transport capacity as anode materials for LIBs compared to single-component and binary materials. Typically, the compound presented a superior reversible capacity of 1061.3 mA h g −1 at 0.1 A g −1 , a high capacitance retention of 851.1 mA h g −1 after 300 cycles, and a prominent rate capacity of 450.3 mA h g −1 at 2.0 A g −1 , which surpasses the performance of most reported anodes for LIBs. Kinetic calculations also indicate that the charge accumulation functionality of MnPMo 8 V 6 @MXene/MoS 2 involves diffusion and pseudocapacitive behavior. This study combines the outstanding Faraday properties of Keggin POM, the mechanical strength of MoS 2 and the ultra-high conductivity, low impedance and high specific surface area of accordion-like MXene into the ternary composite. Meanwhile, a unique 3-D conductive network is formed among POM with regular channels, MoS 2 nanosheets and accordion-like MXene. The complementary performance and favorable morphology make the three components produce perfect synergistic effect and outstanding comprehensive lithium-ion batteries performance.
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Journal of Materials Chemistry A
·
2016
·Vol. 4
·期 16
·5932-5941
·
IF 8.262
Yu Zhou,Yong Liu,Wenxia Zhao,Fangyan Xie,Ruimei Xu,Baojun Li,Xiang Zhou,Hui Shen
A promising new concept is to apply additive/binder-free electrodes for lithium-ion batteries by directly growing active materials on current collectors, however, they still suffer from the low quality electronic contact and poor mechanical stability due to the lattice mismatch between active materials and substrates. Here we present the direct growth of vertically aligned MoS2 nanosheets on a Ti substrate through a self-supported TiO2 bonding interface route, thereby preferentially exposing the edges on the film surface. In this unique structure, MoS2 nanosheets are interconnected with each other and create a strong adhesion to the Ti substrate through the TiO2 bonding interface, which would allow electrons to easily transport throughout the whole electrode. Furthermore, their edge-terminated structure can provide more sites for Li-ion intercalation. By using this additive/binder-free electrode, it can deliver a discharge capacity as high as 1189 mA h g−1 at a current density of 1000 mA g−1 after 600 cycles. Importantly, our synthetic approach, based on this metal surface dissolution–crystallization produced bonding interface, can provide a general strategy for the direct growth of other metal sulphides such as NiS and CoS nanosheets on the Ti substrate with great promise for various applications.
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高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 2
·期 33
·13299-13308
·
IF 0
Xiaming Feng,Weiyi Xing,Lei Song,Yuan Hu
In this work, a new MoS2/CoOOH hybrid material was successfully synthesized by a facile wet chemical method, and its structure was confirmed by X-ray diffraction and Raman spectroscopy. A morphological study showed that, due to the different sizes of the two components, the resulting MoS2/CoOOH hybrid displayed a disordered structure in which large MoS2 sheets had many independent and separate CoOOH nanoplatelets on the surface. The catalytic oxidation effect of MoS2/CoOOH hybrids on the thermal decomposition of epoxy resin was studied by thermogravimetric analysis-infrared spectrometry. It was found that the amount of organic volatiles of epoxy resin significantly decreased and non-flammable CO2 was generated after incorporating MoS2/CoOOH hybrids, which implied the reduced toxicity of the volatiles and obvious smoke suppression. Meanwhile, the incorporation of MoS2/CoOOH hybrids also resulted in a remarkable increase in the char residue of the epoxy composite, indicating the efficient catalytic carbonization of MoS2/CoOOH hybrids. Based on the X-ray diffraction and Fourier transform infrared results of the char residue, the possible mechanism of the reduced fire hazards and high char formation of the epoxy composites was proposed as the combination of the adsorption and synergistic catalytic effect of the MoS2/CoOOH catalyst, which would provide promising applications in the development of fire safety polymer materials.
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