OPTICS AND LASER TECHNOLOGY
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2024
·
IF 4.6
Yu Huang,Xiaomei Li,Hua Zhang,Zhiguo Wu,Rohan Weerasooriya,Xing Chen,Jiu Zhou,Jiangling Wu,Jianjiang Xue,Junbo Wang,Lei Feng
A simple and low-cost fabrication method via polydopamine accelerated electroless plating (ELP) for an optical fiber surface plasmon resonance (SPR) sensor with molybdenum disulfide nanosheets (MoS 2 NSs) and gold nanoparticles (AuNPs) hybrid structure was proposed. The MoS 2 NSs were prepared by ultrasonic-assisted mixed-solvent liquid-phase exfoliation method. MoS 2 NSs and AuNPs were sequentially immobilized on the optical fiber by electrostatic interaction and Au-S bond supported by polydopamine and 1,2-ethanedithiol respectively, and a gold film supporting SPR was fabricated by ELP to form the optical fiber SPR sensor. The synthesized nanostructures and optical fiber sensors were characterized for their structural, morphological and optical properties. Some key experimental parameters, including dopamine concentration, dopamine polymerization temperature, dopamine polymerization time, pH of MoS 2 NSs solution and plating time, were investigated in detail. The refractive index sensitivity of sensor with the fiber/MoS 2 /AuNPs/Au structure achieved 678.85–7231.64 nm/RIU in the range of 1.3329–1.3638, which was approximately 52.35 % and 16.37 % higher than that of conventional sensors in the low refractive index range and high refractive index range respectively. This work proposed a facile, rapid and effective method to fabricate optical fiber SPR sensor to enhance its sensitivity, which indicates the potential application of the fabricated sensor in optical sensing field.
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高影响因子
MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Zhe Lin,Zhengcai Guo,Xiaohong Wang,Jinchun Tu,Delun Chen,Yang Cao,Qiang Wu
MoS 2 is an attractive electrochemical sensing electrode material for the detection of biomolecule because of its adjustable band gap, large surface area, and unique electrochemical characteristics. However, the poor catalytic and electrical conductivity of the semiconductor 2H-phase MoS 2 and the phenomenon of restacking during electrochemical use hinder its sensing application. Herein, electron injection engineering is employed for the formation and stabilization of high-concentration metal 1T-phase MoS 2 nanosheets on ionic liquid-functionalized carbon nanotubes (CNTs-IL). The increase of MoS 2 concentration in the metal 1T phase significantly accelerates electron transfer kinetics. The in-situ growth method results in a tightly interfaced coupling effect, thereby substantially shortening the electron transport pathway and decreasing interfacial transmission impedance. In addition, the sulfur defects on the surface of MoS 2 as the anchoring point of sulfhydryl groups promote the enrichment of thiols on the surface of the material and reduce the reaction barrier for sulfhydryl oxidation, thereby improving the catalytic performance. The prepared CNTs-IL-MoS 2 /SPE biosensor shows excellent l -cysteine sensing performance by electrochemical detection.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
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IF 11.3
Yechen An,Jinglong Han,Xiaoxu Gao,Ruijie Yang,Wenhai Zhang,Ruiyun Ren,Luwei Li,Wenli Jiang,Aijie Wang,Nanqi Ren
The selective separation of organic compounds and inorganic salts is essential for wastewater recycling in fine chemical industries such as pharmaceuticals and pesticides. Membrane separation technology offers a promising solution. However, conventional organic membranes often face challenges related to precise separation and solvent resistance. While graphene oxide (GO) membranes exhibit excellent solvent resistance, their separation performance and structural stability require further improvement. In this study, we developed a GO/few-layer molybdenum disulfide (FLMoS 2 ) membrane via co-assembly. The optimized GO/FLMoS 2 membrane demonstrated a water permeability of 28.4 LMH/bar, approximately four times higher than conventional GO membranes, and achieved a separation factor exceeding 900 for organic/inorganic mixtures—among the highest reported for two-dimensional (2D) membranes. Comprehensive characterization, including low-field nuclear magnetic resonance (LF-NMR), revealed that this superior performance was attributed to controlled defect channels, enhanced interlayer cross-linking, and the intrinsic rigidity of FLMoS 2 , which provided high structural stability and minimal swelling. Moreover, mechanical strength assessments, including critical destructive load force and nanoindentation tests, confirmed significant improvement in structural robustness. As a result, the GO/FLMoS 2 membrane maintained stable water permeability and separation efficiency over 100 hours of continuous operation and six chemical cleaning cycles, demonstrating its potential for sustainable wastewater treatment and resource recovery.
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高影响因子
Applied Materials Today
·
2025
·
IF 6.9
Jiaxin Li,Yanzhi Xing,Han Leng,Qi Han,Yanfeng Zhang,Jianhua Wang,Xuwei Chen
The combination of photothermal therapy (PTT) and reactive oxygen species (ROS)-involved photodynamic therapy (PDT) holds great promise in enhancing anticancer effect. Herein, a MoS 2 -based multifunctional biomimetic nanotherapeutic platform for synergistic PTT and PDT anti-tumor therapy and real-time self-evaluation of therapeutic effect was developed. MoS 2 hollow nanospheres and fluorescence TAPP-Ma was cloaked with a 4T1 cell-activated fibroblast cell (CM-AF) hybrid membrane to give nanosystem CM-AF-MoS 2 @TAPP-Ma. The hybrid membrane as a delivery system not only offers the nanotherapeutic platform with homotypic targeting ability, but also effectively eliminates the barrier effect of tumor tissue microenvironment. Caspase 3 (Casp3) inside cancer cells activated by the PTT effect of MoS 2 hollow nanospheres broken down TAPP-Ma, triggering the PDT of TAPP. At the same time, the fluoresce “turn-off” of TAPP-Ma provided the base for the self-evaluation of therapeutic effect. The in vitro and in vivo outcomes suggested that the MoS 2 -based multifunctional biomimetic nanotherapeutic platform exhibited synergistic cascade effect for cancer therapy, making it an promising anti-cancer candidate in biomedical clinical application.
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MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 6
·1-11
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IF 5.3
Hao Xuanxuan,Liu Zhimin,Zheng Tongtong,Fan Yunfeng,Hu Leqian
A signal-amplified platform was designed to construct a label-free electrochemical aptasensor for lead ions (Pb 2+ ) assay. First, flower-like molybdenum disulfide-supported AuNPs (AuNPs@MoS 2 ) nanocomposites were synthesized and used as substrates for modifying the electrode. The AuNPs@MoS 2 material possessed large surface area and superior biocompatibility, which was beneficial to improve the loading amount of the complementary DNA (cDNA) and amplified the response signal. Importantly, the prepared core–shell Pt@Pd bimetallic nanoparticles (Pt@PdNPs) were used to conjugate with redox marker thionine (Thi) and aptamer (Apt) for further signal amplification; the obtained signal probes (Thi-Pt@PdNPs-Apt) were connected by the cDNA assembled on the electrode through DNA hybridization. Differential pulse voltammetry was performed to monitor the signal of Thi. After incubating of aptasensor with Pb 2+ , the specific recognition of Pb 2 + and Apt resulted in the dissociation of aptamer-cDNA complex, thereby the Thi-Pt@PdNPs-Apt separated from the electrode surface and decreased current response was obtained. The prepared electrochemical sensor exhibited linear response to Pb 2+ in the range 5.0 × 10 −4 –100 nM and a detection limit of 1.0 × 10 −4 nM was achieved. The sensor was applied to the determination of Pb 2+ in actual sample with high sensitivity and accuracy, demonstrating potential applications in heavy metal monitoring. Graphical Abstract
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FOOD CHEMISTRY
·
2024
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IF 8.5
Fei Wang,Yao Zhu,Long Qian,Yuhao Yin,Ziyu Yuan,Yuting Dai,Tao Zhang,Dongya Yang,Fengxian Qiu
Precisely detecting organophosphorus pesticides (OPs) is paramount in upholding human safety and environmental preservation, especially in food safety. Herein, an electrochemical acetylcholinesterase (AChE) sensing platform entrapped in chitosan (Chit) on the glassy carbon electrodes (GCEs) decorated with Pt/MoS 2 /Ti 3 C 2 MXene (Pt/MoS 2 /TM) was constructed for the detection of chlorpyrifos . It is worth noting that Pt/MoS 2 /TM possesses good biocompatibility, remarkable electrical conductivity , environmental stability and large specific surface area . Besides, the heterostructure formed by the composite of TM and MoS 2 improves the conductivity and maintains the original structure, which is conducive to improving the electrochemical property . The coordination effect between the individual components enables the even distribution of functional components and enhances the electrochemical performance of the biosensor (AChE-Chit/Pt/MoS 2 /TM). Under optimal efficiency and sensitivity, the AChE-Chit/Pt/MoS 2 /TM/GCE sensing platform exerts comparable analytical performance and a wide concentration range of chlorpyrifos from 10 −12 to 10 −6 M as well as a low limit of detection (4.71 × 10 −13 M). Furthermore, the biosensor is utilized to detect OPs concerning three kinds of fruits and vegetables with good feasibility and recoveries (94.81% to 104.0%). This work would provide a new scheme to develop high-sensitivity sensors based on the two-dimensional nanosheet/laminar hybrid structure for practical applications in environmental monitoring and agricultural product detection.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Fangfang Su,Xiaoqian Li,Zhongjie He,Jinliang Xie,Weirui Zhang,Yangyang Xin,Xiaoyu Cheng,Dongdong Yao,Yaping Zheng
Recently, solar energy has garnered widespread attention due to its clean, pollution-free, and renewable characteristics. Among them, latent heat nanofluids (LHNF) are extensively employed in direct absorption solar collectors (DASC) because of their high heat storage density and efficient heat transfer efficiency. In this study, a novel LHNF was prepared through electrostatic interaction between phase change nanocapsules modified with MXene-MoS 2 (hereafter named “n-22@SiO 2 -Ti 3 C 2 T x -MoS 2 MEPCN”) and ionic liquid, aiming at sustainable light-heat conversion. Phase change nanocapsules are obtained by encapsulating docosane (n-22) within an inorganic SiO 2 shell and modifying it with Ti 3 C 2 T x and MoS 2 to improve the absorption of solar energy across the full spectrum. Research indicates that LHNF possesses high thermal stability, low viscosity, and high thermal conductivity. Furthermore, LHNF contains 4 % n-22@SiO 2 -Ti 3 C 2 T x -MoS 2 can achieve full spectral absorption at an optical path length of 0.005 m. The equilibrium temperature of LHNF-10 % under 1 Sun irradiation can reach 76.3 °C, with a light-heat conversion efficiency of 85.62 %. Its energy storage performance remains relatively stable under cycling conditions. In addition, the water evaporation rate of the fiber fabric coated with LHNF-10 % increased by 94.42 % compared to the untreated fabric, and this increase persisted even after sunlight was turned off. Its outstanding light-heat conversion performance is anticipated to confer application advantage in intermittent solar energy utilization, wearable fabrics, and biomedical materials.
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TRIBOLOGY LETTERS
·
2024
·Vol. 72
·期 3
·1-13
·
IF 2.9
Xiong Sang,He Jiaqi,Wang Chenglong
N-doped graphene oxide quantum dots (NGOQDs) with MoS 2 and Al 2 O 3 nanocomposites were prepared by solvothermal method. The morphology and the composition and structure of the prepared composites were characterized by TEM, XRD, Raman, ATR-FTIR, and XPS. Tribological behavior of NGOQDs-MoS 2 and NGOQDs-Al 2 O 3 nanocomposites as lubricant additive in aqueous glycerol were studied. Through experiments and MD simulations, the tribochemistry-induced lubrication mechanism was disclosed. The results shows that the combination of NGOQDs and hydrated glycerol can significantly improve lubrication performance, and the addition of NGOQDs-MoS 2 and NGOQDs-Al 2 O 3 nanoparticles can further improve tribological properties. The formation of a tribofilm through tribochemical induced lubrication mechanism improves the wear resistance of metal surfaces. Graphical abstract
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Lei Yang,Xinyu Wang,Chunliu Zhu,Haozhi Wang,Jing Shi,Jingwei Chen,Weiqian Tian,Yue Zhu,Minghua Huang,Jingyi Wu,Huanlei Wang
Molybdenum sulfide (MoS 2 ) is a prospective anode material for potassium-ion batteries, owing to its large interlayer spacing and superior theoretical capacity. Nevertheless, its practical application is hindered by sluggish kinetics and inferior structural stability, which limit its potassium storage performance. Herein, we employ hollow hard-soft carbon bowls (HSCB), consisting of soft carbon uniformly coated on hard carbon bowls, as nanoreactors to confine few-layered MoS 2 nanosheets. The mesoporous carbon shells of HSCB enhance electrolyte penetration and enable rapid charge transfer and robust structural protection, while the mechanical coupling induced by pore filling, alongside the exist of C S Mo chemical bonds, further reinforces the structural integrity of MoS 2 . Additionally, the creation of few-layered MoS 2 structures and MoS 2 /carbon heterostructures promotes efficient K-ion adsorption and diffusion. Notably, there is a strong linear relationship between MoS 2 content and electrochemical performance, including initial Coulomb efficiency, rate performance, and reaction kinetics. Consequently, the optimized MoS 2 /HSCB anode demonstrating a superior reversible capacity of 630 mAh g −1 at 0.1 A g −1 , an exceptional rate capacity of 251 mAh g −1 at 10 A g −1 , and excellent cycling stability, retaining 369 mAh g −1 at 0.5 A g −1 after 700 cycles. Remarkably, a potassium-ion hybrid capacitor assembled with MoS 2 /HSCB anode achieves superior energy/power densities of 122 Wh kg −1 /11266 W kg −1 , along with splendid capacity retention of 89.5 % after 5000 cycles. This work not only offers an innovative approach for the structural engineering of high-performance sulfide-based composite materials but also elucidates the impact of sulfide content on electrochemical performance.
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MICROCHIMICA ACTA
·
2024
·Vol. 192
·期 1
·1-14
·
IF 5.3
Wang Yilin,Zhao Zixia,Wang Yuefan,Liu Zhifang,Chen Leyao,Qi Jin,Xie Yixi,Zhao Pengcheng,Fei Junjie
GO/Co-MOF/PPy-350 (GPC-350) was synthesized by in situ growth of ultrafine Co-MOF on graphene oxide (GO), followed by encapsulation with polypyrrole (PPy) and calcination at 350.0℃. Meanwhile, MoS 2 -MWCNTs (MoS 2 -CNTs) were produced via the in situ synthesis of MoS 2 within multi-walled carbon nanotubes (MWCNTs). The electrochemically superior GPC-350/MoS 2 -CNTs nanocomposite was then achieved by combining GPC-350 with MoS 2 -CNTs. The polypyrrole encapsulation serves to protect the ultrafine Co-MOF, preventing its degradation during the calcination process. The linear detection range of the GPC-350/MoS 2 -CNTs/GCE sensor for the determination of catechin (CA) in phosphate buffered saline (PBS) was from 5.0 to 1800.0 nM with a limit of detection of 1.78 nM. In addition, the materials were characterized using SEM, EDX, TEM, XRD, EIS, XPS, FTIR, and Raman. These results indicate that the synthesis of GPC-350/MoS 2 -CNTs nanocomposites is successful and CA in beverages samples can be effectively detected using electrochemical sensors. Additionally, the reaction mechanism of CA was explored through cyclic voltammetry. The application of GPC-350/MoS 2 -CNTs nanocomposites in sensor technology offers innovative approaches for the ultrasensitive detection of flavonoids. Graphical abstract
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DESALINATION
·
2025
·
IF 9.8
Tong Wei,Kai Li,Senlin Shao,Gang Wen,Jianwei Bu,Tinglin Huang
Nanofiltration membranes (NFMs) are promising candidates for advanced drinking water treatment due to their excellent retention capabilities, however, their widespread application is limited by low water permeance and susceptibility to inorganic scaling. In this study, Fe(III)-tannic acid‑molybdenum disulfide (Fe(III)-TA-MoS 2 ) nanosheets were synthesized and employed as an interlayer material for NFM fabrication. The resulting NFMs were then created through interfacial polymerization, labeled as MoS 2 -1.5, MoS 2 -3.0, and MoS 2 -4.5 based on varying materials loading. Experimental results indicated that the membrane morphology, surface roughness, electronegativity, amine group content, hydrophilicity, selectivity, and resistance to inorganic scaling were all affected by the amount of Fe(III)-TA-MoS 2 loading. The MoS 2 -3.0 NFM exhibited the highest roughness and uniformity (Ra: 111.25 ± 3.30 nm), along with enhanced hydrophilicity and the smallest pore size (0.39 nm) among the Fe(III)-TA-MoS 2 NFMs. These characteristics contributed to a high water permeance of 20.19 LMH/bar. Sulfate rejection decreased notably with increasing amine content, while calcium ion rejection showed a slight decline as surface electronegativity increased. Notably, the pore size of the Fe(III)-TA-MoS 2 NFMs remained largely unchanged at low and moderate loadings. Although the MoS 2 -4.5 NFM exhibited even higher water permeance and electronegativity, its surface structure underwent significant changes, leading to inferior performance in terms of scaling resistance and natural organic matter removal compared to the MoS 2 -3.0 membrane. Overall, this study provides a novel strategy for enhance both water permeability and anti-scaling performance of NFMs, offering potential cost reductions for drinking water treatment applications.
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CORROSION SCIENCE
·
2025
·
IF 8.5
Muhammad Mubeen,Mubashar Mahmood,Mohammad Tabish,Yiqian Lv,Salman Khalid,Wanling Wang,Muhammad Jawad,Jingmao Zhao,Baomin Fan,Ghulam Yasin
Zn-Al-Mg-coated steel (ZM-steel) confronts significant considerable challenges from over-film degradation and under-film metallic dissolution, compromising its durability under extreme weathering conditions. This research presented an intelligent coating system incorporating guanine-loaded melamine resin spheres (Gua-MRS) hybridized with MoS 2 nanosheets, engineered to deliver functional corrosion protection for ZM-steel. Gua-MRS@MoS 2 nanohybrid offered a dual-functional approach: MRS@MoS 2 provided robust electrochemical shielding and barrier properties within epoxy matrix, while corrosion-triggered release of guanine - at low pH and/or in NaCl environment imparted exceptional self-healing capabilities. This process formed a uniform precipitation film over ZM-steel surface, effectively combating aggressive corrosive species. The integration of this hierarchical heterostructure not only enhanced structural integrity but also improved the coating's corrosion resistance and thermal stability. These advancements position the coating as an innovative and sustainable solution for engineering applications in the automotive and marine industries. The intercomponent synergy of Gua-MRS@MoS 2 system opens new pathways for the development of high-performance, eco-friendly coatings.
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危险品化学品经营许可证（带存储）