CHEMICAL PHYSICS LETTERS
·
2017
·
IF 1.815
Yong Yang,Hongbin Pu,Tao Lin,Lianbi Li,Shan Zhang,Gaopeng Sun
Monolayer molybdenum disulfide (m-MoS 2 ) has attracted significant interest due to its unique electronic and optical properties. Herein, we report the successful fabrication of high quality and continuous m-MoS 2 films in a quasi-closed crucible encapsulated substrates via a three-zone chemical vapor deposition (CVD) system. Quasi-closed crucible lowers the concentration of precursors around substrates and makes the sulfurization rate gentle, which is beneficial for invariable m-MoS 2 growth. Characterization results indicate that as-grown m-MoS 2 films are of high crystallinity and high quality comparable to the exfoliated MoS 2 . This approach is also adapted to the growth of other transition metal dichalcogenides.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 6
·491
·
IF 2.8
Chen Yongbo,Chen Zhiyue,Xiang Minghui,Zhou Yi,Zhang Jin
The crucial oxidant in photocatalytic degradation of dye is the photogenerated reactive oxygen species (ROS) but many photocatalytic processes suffer from low ROS generation efficiency. In this paper, 1T-MoS 2 quantum dot modified flower-like BiOBr nanocomposites were synthesized to forming a Type-II heterojunction. As-prepared 1T-MoS 2 @BiOB composites showing excellent activity for degradation of rhodamine B (RhB) under visible light, BiOBr loaded with 0.2wt% 1T-MoS 2 quantum dots has achieved 96.9% efficiency within 18 min. Such outstanding photocatalytic activity is attributed to the flower-like structure and heterojunction between 1 T-MoS 2 and BiOBr which provide a fast transfer pathway for excitons and promote the activation of molecular oxygen. In addition, a possible catalytic mechanism was proposed. This work will provide new insight for design and fabrication of cheaper and more effective photocatalysts for molecular oxygen activation in environmental remediation.
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SENSORS AND ACTUATORS A-PHYSICAL
·
2026
·
IF 5.1
Yanpei Xu,Shangzhe Lv,Jiangrong Hou,Qi Wang
Constructs a MoS 2 /Ti 3 C 2 T x composite humidity-sensitive material. • Fabricates flexible LC sensors using inkjet printing on PET. • Enables wireless passive, non-contact humidity monitoring without built-in power. This study reports an inkjet-printed wireless passive LC humidity sensor incorporating a MoS 2 /Ti 3 C 2 T x composite as the humidity-sensitive layer. Flower-like MoS₂, multilayer Ti 3 C 2 T x MXene, and MoS 2 /Ti 3 C 2 T x composites were prepared via hydrothermal synthesis, selective etching, and in situ growth, respectively, and integrated with an inkjet-printed LC resonant circuit on a polyethylene terephthalate (PET) substrate. Structural and chemical characterization using SEM, EDS, FTIR, XRD, and XPS confirmed that MoS₂ nanoflowers were uniformly distributed on the accordion-like multilayer Ti 3 C 2 T x framework, forming a nanocomposite with abundant hydrophilic functional groups and strong interfacial interactions. These features provided numerous adsorption sites for water molecules, facilitated molecular diffusion, and enhanced humidity-dependent dielectric modulation. Following optimization with a 5 mg/mL MoS 2 /Ti 3 C 2 T x dispersion, the sensor exhibited a resonance frequency shift of 85 MHz over a relative humidity (RH) range of 20%–90%, achieving a sensitivity of 1.2943 MHz/%RH. The device also demonstrated low hysteresis of approximately 5%, rapid response and recovery times of 16 and 40 s, respectively, good device-to-device reproducibility, and stable output during both a 50 h short-term test and a 10-day long-term test. The enhanced sensing performance is attributed to the synergistic effects of the high-surface-area MoS 2 nanoflowers, conductive layered Ti 3 C 2 T x channels, and hydrophilic surface terminations. This work presents a promising materials and device strategy for highly sensitive, low-cost, non-contact humidity monitoring. Download: Download high-res image (160KB) Download: Download full-size image
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Nanomaterials
·
2026
·Vol. 16
·期 13
·829
·
IF 4.8
Huibo Han,Shuai Wang,Rui Min,Ragini Singh,Bingyuan Zhang,Santosh Kumar
2,4-Dichlorophenoxyacetic acid (2,4-D) is an extensively applied organic compound, primarily for agricultural weed control and plant growth agents. Although 2,4-D usually exists in the environment in low volumes, the detection of 2,4-D is critical for human health and environmental safety. In this work, a biophotonic biosensor was fabricated by coating the surface of a tapered optical fiber with gold nanoparticles (AuNPs) to excite the localized surface plasmon resonance (LSPR) and functionalizing the fiber with molybdenum disulfide nanosheets (MoS2-NSs)/zinc oxide nanowires (ZnO-NWs) to extend the effective sensing area. Due to the inhibitory effect of 2,4-D on the hydrolytic activity of ALP, the refractive index (RI) around the sensor surface changes, leading to a shift in the LSPR peak wavelength. According to this sensing technique, the sensor can detect concentrations in the range of 1–10 mg/L, with a limit of detection (LOD) of 0.29 mg/L. The stability, repeatability and selectivity tests show that the sensor has good stability and selectivity. In the actual sample detection experiment, the recovery rates of apples and Chinese cabbage were 96.2–100.4% and 83.8–108.8%, respectively, which indicated that the detection method had good accuracy for the detection of target substances in actual samples. Thus, the proposed sensor has an important application in the detection of 2,4-D herbicides.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Shiqiao Liu,Debao Fang,Junlin Yang,Yongliang Shen,Yuefeng Su,Caihong Feng,Ning Li,Chengzhi Wang,Zhiyong Xiong,Haibo Jin,Jingbo Li
Carbon aerogels are highly promising lightweight microwave absorbers, yet their intrinsic brittleness and disordered pore structures significantly limit both mechanical reliability and electromagnetic (EM) performance. Here, a flexible honeycomb-like anisotropic hybrid carbon aerogel (CFMT), modified with MoS 2 /FeS 2 nanoparticles and toughened by a polyurethane network, is developed to overcome these limitations. Benefiting from the aligned quasi-periodic pore architecture, CFMT exhibits a distinct anisotropic electromagnetic response. When incident waves propagate parallel to the honeycomb channels, strong dielectric relaxation is induced, and localized electromagnetic resonance (LEMR) is generated within the pore structure, enabling efficient capture and dissipation of centimeter-wavelength electromagnetic energy. Consequently, the CFMT aerogel delivers an ultrawide effective absorption bandwidth of 11.84 GHz, accompanied by a minimum reflection loss of −50 dB. In addition to excellent microwave absorption, the aerogel also demonstrates robust mechanical flexibility and superior infrared stealth capability. This work explicitly elucidates the mechanism by which quasi-periodic porous structures enhance microwave absorption performance, providing a highly effective design paradigm for next-generation, multifunctional, and flexible electromagnetic wave absorbers.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Ya Gao,Ping Pan,Jinpeng Zhao,Danqing Liu,Shaoqin Liu
Piezo-photocatalytic materials are capable of simultaneously harvesting solar energy and mechanical energy, thereby exhibiting broad application potentials in energy harvesting and environmental decontamination. In this work, a dual-piezoelectric heterostructure was constructed by chemically bonding BaTiO 3 nanorods with MoS 2 nanospheres via a facile hydrothermal method. Under light irradiation, the formation of Mo-O covalent bonds at the BaTiO 3 /MoS 2 interface provides efficient charge-transfer channels for photogenerated electrons (e⁻) and holes (h⁺), effectively suppressing their recombination. Upon the introduction of ultrasonic vibration, the piezoelectric potential induces interfacial band bending, generating a built-in electric field that drives the spatial separation of charge carriers and significantly prolongs their lifetime. Benefiting from the coupled effect of ultrasonic vibration and light irradiation, the MoS 2 /BaTiO 3 composite exhibits outstanding degradation performance toward Rhodamine B (20 mg L −1 ), achieving a removal efficiency of 95.2% within 1 h. The corresponding rate constant (k value) is 8.5 and 16.9 times higher than those of pristine MoS 2 and BaTiO 3 , respectively. Moreover, the piezo-photocatalytic hydrogen evolution rate reaches 2874.49 μmol g −1 h −1 , which is 2.4 and 2.0 times higher than that of pure MoS 2 and BaTiO 3 , respectively. Based on experimental results and theoretical calculations, it was proposed that the type-II heterojunction structure is favorable for electron transfer. The MoS 2 /BaTiO 3 nanocomposite exhibits markedly enhanced piezo-photocatalytic degradation performance and hydrogen evolution activity. This study provides valuable insights into the rational design of unique heterostructures capable of simultaneously driving pollutant degradation and hydrogen generation, showing great potential for applications in environmental decontamination and sustainable energy conversion.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Yong Zhou,Jiamei Liu,Bin Yang,Wei Zhu,Bing Li,Xiaoyang Liu
Developing broad-pH hydrogen evolution reaction (HER) catalysts is crucial for green hydrogen production. Herein, Pt-MoS 2 heterostructure catalysts supported on nitrogen-doped hollow mesoporous carbon spheres (NHMCS) were synthesized via a two-step microwave-assisted solvothermal strategy. The catalyst exhibits outstanding HER activity in acidic, alkaline, and neutral electrolytes, especially in neutral conditions. Pt-MoS 2 /NHMCS-15 mg delivers a current density of 10 mA cm −2 at an ultralow overpotential of only 5.5 mV in 1.0 m PBS. Negligible performance degradation occurs after 100,000 cyclic voltammetry (CV) cycles and 120 h chronoamperometric operation, showing outstanding stability. X-ray absorption fine structures (XAFS), in situ Raman spectroscopy combined with density functional theory (DFT) calculation, elucidate the origin of the enhanced HER activity in neutral media. Strong metal-support interactions (SMSI) at the Pt-MoS 2 interface significantly lower the dissociation energy barrier of the P─OH bond in H 2 PO 4 – , thereby facilitating proton release. Simultaneously, neutral conditions yield higher hydrogen coverage on Pt sites than acidic or alkaline media. These findings provide fundamental insights into the intrinsic mechanism governing the broad-pH HER performance of Pt-MoS 2 /NHMCS-15 mg, particularly in neutral electrolytes, and offer valuable theoretical and experimental guidance for the rational design of efficient and cost-effective HER catalysts, advancing the practical implementation of electrocatalytic hydrogen evolution technologies.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·Vol. 74
·期 32
·25644-25659
·
IF 6.7
Liu Bingbing,Yang Tianshuo,Liu Shuangshuang,Pan Hong,Ren Xiaoxuan,Zhang Haotian,Xu Yuanhui,Gao Faming
A hierarchical Zn-substituted Fe 3 O 4 @NC/CuS@MoS 2 heterostructure was rationally
designed for
the electrochemical
detection of organophosphorus pesticides such as methamidophos and
dichlorvos. Hollow Fe 2 O 3 nanospheres were synthesized
hydrothermally, followed by Zn-substitution, polydopamine-derived
nitrogen-doped carbon coating, and in situ growth of CuS@MoS 2 nanosheets. The Zn-substitution modulates the electronic structure,
while the carbon network and the CuS@MoS 2 heterojunction
synergistically enhance charge transfer kinetics, increase the electroactive
surface area, provide abundant sites for acetylcholinesterase immobilization,
and ensure favorable biocompatibility. The resulting enhanced interfacial
electron transfer reduces the charge transfer resistance to 41.6 Ω.
The biosensor exhibits broad linear ranges for methamidophos (7.09
× 10 –7 μM to 7.09 × 10 –2 μM) and dichlorvos (4.53 × 10 –7 μM
to 4.53 × 10 –2 μM), with detection limits
of 8.7 × 10 –8 μM and 2.0 × 10 –7 μM, respectively. Real-sample analysis in Chinese
cabbage and apple yields recoveries of 96.36%–102.40% for methamidophos
and 95.92%–101.77% for dichlorvos, confirming its practical
viability for trace pesticide monitoring.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Chengsheng Yang,Lei Liu,Desheng Li,Changming Liu,Juan Wang,Yingkai Liu,Hui Zhang
Two-dimensional transition metal dichalcogenides (TMDCs) hold great promise for optoelectronic devices owing to their unique electronic and optical properties. However, their typically high dark current severely compromises the photodetection performance. To overcome this challenge, we fabricated a type-II band-aligned MoS 2 /WS 2 heterostructures and innovatively incorporated a layer of gold nanoparticles (Au NPs) at its interface. The resulting MoS 2 /Au NPs/WS 2 heterostructures exhibits drastically suppressed dark current while well preserving the photocurrent. Scanning Kelvin probe force microscopy (SKPFM) measurements confirm the type-II band alignment. We demonstrate that in the dark, the Au NPs in contact with MoS 2 create an electron-depletion region in the conduction band, effectively blocking the majority carrier transport and thus reducing the dark current. Under illumination, however, the photo-generated electrons possess sufficient energy to overcome this barrier, leaving the photocurrent largely unaffected. Therefore, under a 5 V bias, compared with the pristine MoS 2 /WS 2 heterostructures, the MoS 2 /Au NPs/WS 2 heterostructures device exhibits a reduction in dark current density by approximately 2.27 × 10 3 times, while the photocurrent density shows only a slight decrease of about 2.19 times. This remarkable contrast leads to a significant enhancement of the light-to-dark current ratio from 4.71 × 10 1 to 5.01 × 10 4 and an expansion of the linear dynamic range from 46.81 dB to 107.58 dB. Furthermore, the suppressed dark current directly translates to a ∼2.27 × 10 3 -fold reduction in standby power consumption under dark conditions. Our work, integrating plasmonic nanoparticles into the interface of a TMDCs heterostructures, provides a novel and effective strategy for engineering high-performance, low-power two-dimensional photodetectors.
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高影响因子
Protection of Metals and Physical Chemistry of Surfaces
·
2026
·Vol. 61
·期 6
·1374-1385
·
IF 1.1
Tianle Li,Shuai Wang,Yongchao Huo,Guoying Geng,Wenxiu Qiu,Chunling Li,Shuangqing Sun
Ni–P–MoS 2 composite coatings often suffer from reduced corrosion resistance despite their excellent lubricating properties. To address this limitation, this study developed a novel Ni–P–MoS 2 –PTFE composite coating via electrodeposition, incorporating hydrophilic-modified MoS 2 nanosheets and oxidized PTFE particles to enhance co-deposition and dispersion. Electrochemical tests, salt spray exposure, and mechanical characterization demonstrated significantly improved properties. The optimized coating with 3 g L –1 PTFE exhibited superior corrosion resistance, showing a maximum electrochemical impedance of 118 300 Ω cm 2 after 20 days of salt spray testing. It also displayed excellent mechanical performance with a Vickers hardness of 774.4 HV and a low friction coefficient of 0.1128. The synergistic effect of PTFE and MoS 2 effectively densified the coating structure, providing enhanced barrier protection and lubrication. This work offers a practical strategy for designing high-performance anti-corrosion and wear-resistant coatings suitable for demanding industrial environments.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 6
·125377
·
IF 7.5
Xin Sun,Ziyi Zhu,Wei Yan,Yuanping Chen,Yingcong Wei,Jing Xu
Synergistic strain/phase engineering boosts photocatalytic hydrogen evolution performance. • The CdS-O/MS-5 achieves a high hydrogen evolution rate of 68.71 mmol·g −1 ·h −1 and AQE of 48.49%. • Strain-enhanced charge transfer couples with metallic/semiconducting phase junctions. While high-efficiency photocatalytic water splitting is pivotal for a sustainable hydrogen economy, its widespread implementation is hindered by sluggish charge-carrier kinetics and the formidable overpotentials inherent to traditional semiconductor. Here, we report a dual-optimization strategy to transcend these limitations by integrating oxygen-doped CdS (O-CdS) with a 1 T/2H-MoS 2 phase-engineered co-catalyst. The interstitial incorporation of oxygen induces a pronounced lattice expansion within the CdS framework, which reconfigures the electronic band structure by introducing additional electronic states near the Fermi level. These emergent states act as energetic stepping stones, facilitating efficient charge injection into the co-catalyst. Concurrently, the rational design of the 1 T/2H-MoS 2 metallic/semiconducting homojunction facilitates efficient interfacial charge extraction and provides abundant active sites for proton reduction. This synergistic integration of lattice-strain engineering and phase-controlled co-catalytic architectures simultaneously elevates photocatalytic activity and long-term durability. The optimized system exhibits a 2.5-fold enhancement in hydrogen evolution performance (68.71 mmol g −1 h −1 ) over the pristine CdS. Our findings establish a robust paradigm for leveraging lattice distortion and polymorphic phase engineering to optimize solar-to-chemical energy conversion in hybrid semiconductor architectures.
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高影响因子
TRIBOLOGY INTERNATIONAL
·
2026
·
IF 7.6
Na Hu,Yilong Ren,Yao Wu,Gaoyu Wang,Ping Chen,Yi Zhang
Stress-triggered MoS 2 /PAO6@UF microcapsules enabled high-load PTFE/epoxy liners with stable lubrication under step-loading up to 7.5 kN. • MoS₂ fraction tuned friction–wear performance, achieving 0.056 COF and 6.4 × 10 -8 wear rate. • A dynamic lubrication interface consisting of PAO6 oil film, MoS 2 solid film, and PTFE transfer film was revealed. Self-lubricating spherical plain bearings are key components in aircraft flight-control systems, and their moldable liners must provide stable lubrication under high-load conditions. However, it remains challenging to achieve low friction, low wear, and durable transfer-film protection in epoxy-based self-lubricating liner materials. In this study, Stress-triggered solid–liquid microcapsules consisting of a polyalphaolefin (PAO6)/MoS₂ lubricant core and a urea–formaldehyde (UF) shell were fabricated by in situ polymerization and subsequently incorporated with polytetrafluoroethylene (PTFE) into an epoxy matrix to prepare self-lubricating liner composites. The resulting microcapsules were denoted as MoS₂/PAO6@UF microcapsules. The microcapsules showed spherical morphologies, an average particle size of 6–7 μm, and good thermal stability below 200 °C. Under 1500 N and 100 rpm, the composite containing 5 wt.% MoS 2 in the microcapsule core exhibited the lowest coefficient of friction of 0.056, whereas the composite containing 10 wt.% MoS 2 achieved the lowest wear rate of 6.4 × 10 -8 mm 3 /(N·m). Step-loading tests showed that the composites maintained effective lubrication up to 6.5–7.5 kN, indicating good high-load-bearing capability. Optical microscopy, FTIR, XPS, and Raman analyses confirmed the formation of a composite lubricating interface composed of released PAO6, a PTFE transfer film, and a MoS 2 solid lubricating film. The PAO6 oil film reduced interfacial shear, the PTFE transfer film stabilized the lubricating interface, and the MoS 2 solid lubricating film provided load-bearing support. These results establish a stress-triggered, three-component lubrication strategy for high-load, moldable epoxy liners.
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