Materials Today Energy
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2024
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IF 9
K.S. Chandrakantha,Z. Zuo,B.N. Chandrashekar,A. Amini,K.S. Rangappa,S. Srikantaswamy,C. Cheng
A composite catalyst, zinc-doped laser-reduced graphene oxide (LrGO), is synthesized with highly dispersed molybdenum disulfide (MoS 2 ) nanolayers using laser exfoliation followed by a hydrothermal process. The resultant LrGO–ZnO/1T–2H MoS 2 (GZM3) catalyst exhibits enhanced hydrogen evolution reaction (HER) catalytic performance and improved stability. It achieves small overpotentials of 94 and 191.5 mV at a current density of 10 mA cm −2 , under acidic and alkaline conditions, respectively. This superior catalytic activity is attributed to the high electrical conductivity and large electrochemical surface area of graphene, along with efficient charge transfer facilitated by Zn ions between LrGO–ZnO and 1T–2H MoS 2 .
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ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Qing Zeng,Mengxi Han,Yifan Zhu,Qingyu Wu,Jianlin Zhou,Xinhua Hu,Bo You
Solar-control window film is an effective solution for reducing indoor cooling energy consumption. In this study, a modified 1T-phase molybdenum disulfide (M1T-MoS2)/phenolic resin composite film with low reflectivity, high imaging clarity and broadband optical blocking performance was developed. To enhance the dispersion of 1T-phase MoS2 nanosheets within the resin matrix, surface functionalization was achieved using trimethoxysilylpropanethiol (TOPE), exploiting the strong chemical affinity between thiol groups and sulfur vacancies. Furthermore, in situ curing of the phenolic resin facilitated dehydration condensation between silanol groups on the modified nanosheets and hydroxymethyl groups of the resin, resulting in the nanosheets being firmly anchored within the polymer network. The improved dispersion of the metallic-like M1T-MoS2 nanosheets allows the M1T-MoS2/phenolic resin film, with a thickness of only 40 μm and a filler content of 1.75 wt %, to achieve a light shading efficiency exceeding 85% for visible and near-infrared light below 1500 nm. Additionally, the film demonstrates high imaging clarity and a low visible-light reflectance of approximately 7%, contributing to the reduction of glare and light pollution caused by excessive reflection from window films. Experimental photothermal efficiency tests and finite element analysis demonstrated that the film’s high light-shading performance was primarily due to its strong optical absorption rather than reflection. This study presents an effective approach for fabricating broadband solar control window films and provides a strategy to enhance the stability of 1T-phase MoS2 in practical applications. These findings contribute to expanding the applications of 1T-MoS2 in composite materials and energy-related fields.
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PubMed
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
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IF 5.4
Chao Zhang,Xiulin Han,Bin Zuo,Dewei Li,Changhua Li,Jing Zhang,Xiaoyu Mao,Wei Ren,Songlin He,Yi He,Shihong Zhang
The corrosion and wear of metals have long been persistent challenges for researchers and engineers. This work aims to develop a coating with long-term corrosion resistance, while addressing the poor wear resistance of epoxy coatings. 2D Siloxene (S) nanosheets were prepared using the topochemical method. Using S nanosheets as carriers, a core-shell structure with MoS₂ encapsulating S nanosheets was constructed via a hydrothermal method, endowing the coating with high barrier properties and wear resistance. To further strengthen the long-term corrosion resistance of the coating and improve the compatibility between the core-shell structure and EP resin, a layer of tannic acid was uniformly loaded onto the surface of the core-shell structure through a one-pot coprecipitation method. A systematic investigation was conducted on the corrosion and wear resistance of the coating. The results reveal that the composite coating, exhibiting outstanding corrosion resistance, also shows remarkable wear resistance. The |Z| 0.01 Hz of the composite coating increased from 8.4 × 10⁸ Ω•cm² to 9.62 × 10 9 Ω•cm 2 , with the wear rate dropping by 72.5 %. This investigation yields valuable guidance for the construction of coatings with long-term corrosion resistance, simultaneously providing a new perspective on the application of S nanosheets.
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CARBON
·
2025
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IF 11.6
Haotian Jiang,Yanxiang Wang,Chengjuan Wang,Yingfan Li,Shichao Dai,Bohan Ding,Jinghe Guo,Yanru Yuan,Dongming Liu,Hui Li
To develop multi-functional microwave-absorbing materials, the FeCoNi/MoS 2 @carbon nanotubes (CNTs)/carbon nanofibers (CNFs) aerogels were synthesized by anchoring FeCoNi and MoS 2 onto an aerogel skeleton via directional freeze-drying and catalytic chemical vapor deposition (CCVD). Through CCVD, a diverse array of heterointerfaces was successfully constructed and defect-containing CNTs were introduced, thereby improving the impedance mismatch of carbon-based aerogels while achieving outstanding microwave absorption performance. The composite aerogel results in a minimum reflection loss of −84.18 dB at the thickness of 1.85 mm and an effective absorption bandwidth of 5.40 GHz at the thickness of 1.75 mm with a 13 % filler ratio. The excellent electromagnetic wave absorbing ability is mainly ascribed to the formation of three-dimensional conduction network, abundant heterogeneous interfaces, and the introduction of magnetic loss. Density functional theory calculations further elucidate that the enhanced dielectric properties arise from asymmetric charge distribution at heterogeneous interfaces (FeCoNi–C and MoS 2 –C), which amplifies interfacial polarization, while the increased density of states optimizes conduction loss. Additionally, the composite aerogels exhibit exceptional thermal insulation and infrared stealth performance. This work pioneers a novel pathway method for multifunctional aerogels using CCVD.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Chunlin Chen,Beibei Ren,Guoqing Xiao,Xinyu Bai,Guirong Zhao,Chunyan Chen,Chuanlin Mou
Herein, bio-based dopamine (DA) and phosphorus-rich hexachlorocyclotriphosphine (HCCP) were firstly assembled onto the MXene surface (MXene/DHP) via copolymerization. Notably, the formation of the DHP copolymer introduced a large amount of P and N flame-retardant elements, while the abundant amino/hydroxyl groups in its structure provided active sites for further surface modification. Subsequently, small-sized molybdenum disulfide (MoS 2 ) nanosheets were uniformly anchored onto the MXene/DHP surface, forming a composite flame retardant with a hierarchical nanostructure (MXene/DHP@MoS 2 ). The MXene/DHP@MoS 2 enhanced EP composite coating achieved the lowest back temperature (167.7 ± 3.3 ℃) and the highest expansion height (24.8 ± 0.99 mm), directly indicating its superior thermal insulation capability due to the excellent thermal insulation properties of the two-dimensional structures of MXene and MoS 2 . The MXene/DHP@MoS 2 /EP composite coating displayed the lowest smoke density rating (42.2 ± 1.32 %) while retaining the highest residual carbon content (29.9 %). This is attributed to that the abundant P and N groups in MXene/DHP@MoS 2 , along with multiple metal ions, catalyzed the conversion of more pyrolysis intermediates into char at high temperature. Additionally, the MXene/DHP@MoS 2 /EP composite exhibited the most complete and dense residual carbon after calcination, with titanium dioxide and molybdenum trioxide uniformly embedded in the carbon layer framework, significantly enhancing its thermal insulation performance. Overall, this hierarchically structured composite flame retardant significantly improved the flame protection capability of water-based epoxy intumescent coatings, further driving the rapid development of fire-resistant coatings.
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MICROCHEMICAL JOURNAL
·
2025
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IF 5.1
Quanhong Ou,Yehao Zuo,Yunhua Li,Xuan He,Lun Li,Gang Liu,Junqi Tang,Weibin Zhang
The integration of noble metals onto semiconductor surfaces has become a key focus in advancing surface-enhanced Raman spectroscopy (SERS) research. Two-dimensional materials such as MoS 2 are valued for their exceptional thermal and chemical stability, making them promising candidates for advanced SERS sensor development. In this study, we synthesized flower-like MoS 2 microspheres (~380 nm in diameter) through a facile hydrothermal method and functionalized their surfaces with gold nanoparticles (AuNPs) to produce MoS 2 @Au composites. Rhodamine 6G, used as a Raman probe, revealed that the enhancement factor of the MoS 2 @Au system increased substantially from 2.78 × 10 5 to 3.79 × 10 7 , and the detection limit improved to an impressive 3.13 × 10 −10 mol/L—exhibiting a two-order-of-magnitude improvement in sensitivity compared with pristine MoS 2 . Detecting trace tramadol hydrochloride holds immense significance. It enables the precise identification of minuscule drug quantities, facilitating early detection of abuse. This provides crucial support for clinical treatment, rehabilitation interventions, and holds vital importance in judicial appraisal and related fields. The composite demonstrated exceptional proficiency in detecting tramadol hydrochloride, achieving an unprecedented detection limit of 10 −10 mol/L, well below clinically relevant thresholds. Finite-difference time-domain simulations revealed the spatial distribution of the electromagnetic field, while density functional theory calculations elucidated the intricacies of charge transfer and bandgap modulation upon tramadol adsorption. These theoretical insights uncovered the fundamental mechanisms driving the observed SERS enhancement. Experimental validation confirmed that AuNP modification substantially enhanced charge transfer efficiency, highlighting the synergistic contributions of electromagnetic and chemical enhancement effects in improving SERS sensitivity. This work not only deepens our understanding of SERS phenomena but also broadens its potential applications in biomedical sensing.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Alhadi Ishag,Weiyu Zhu,Yanxue Yue,Rongbo Hou,Bo Zhang,Yubing Sun
The simultaneous adsorption of U(VI), Pb(II), and humic acid (HA) in water solutions on a nanoscale zerovalent iron/molybdenum disulfide (nZVI/MoS2) composite was investigated using batch, spectroscopic, and modeling techniques. An increased removal of U(VI) and Pb(II) and a gradual decrease in HA removal on nZVI/MoS2 was observed with increasing pH from 2.0 to 7.0. The adsorption capacities of U(VI), Pb(II), and HA under ternary systems were 57.72, 40.43, and 55.43 mg/g (298 K, pH 4.0), respectively. In addition, nZVI/MoS2 exhibited good regeneration due to the high surface area and uniform distribution of nZVI. The interaction mechanism was demonstrated to be inner-sphere surface complexation by XPS analysis and surface complexation modeling (SCM). The presence of Pb(II) and HA inhibited U(VI) reduction into U(IV) by nZVI according to XPS analysis; meanwhile, two inner-sphere complexation reactions (weak and strong sites) rather than redox reactions were demonstrated by SCM. These findings showed that nZVI/MoS2 could be used as an efficient adsorbent for the high elimination of radionuclides, heavy metals, and organics in actual compound pollution of wastewater.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
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IF 4.9
Jiaqi He,Sang Xiong,Huijian Li
In this study, a lubricant was synthesized using water-based hybrid nanofluid containing graphene oxide (GO) and MoS 2 nanoparticles. Pin-on-disk tribology tests and molecular dynamics (MD) simulations under humid environment were conducted. It was discovered that the GO-MoS 2 hybrid nanofluid, at the optimal concentration combination (0.3 wt% GO + 0.1 wt% MoS 2 ), demonstrated a notably enhanced synergistic lubrication effect, resulting in a reduction of approximately 14.6 % in the average friction coefficient and 14.4 % in the wear rate when compared to the single nanofluid. Through interfacial tribochemical analysis, a protective polycrystalline tribofilm in the thickness of about 18.6 nm was formed on metal surface, consisting of ultra-fine GO, MoS 2 crystals and amorphous substances derived from the organic matters of nanofluids. Besides, from humid-environmental MD simulation results, there were lower friction force, normal force and peak temperature values in MD model containing both GO and MoS 2 nanosheets, meanwhile the lattice mismatch between different nanosheets led to high interlamellar repulsion, further mitigating the pressure and friction. By analyzing the absorption behavior of dispersant molecules, sodium dodecylbenzene sulfonate and triethanolamine molecules partially transferred from nanosheets to Fe surface. Based on the experiment and humid-environmental MD simulation results, the excellent tribological behavior of nanofluid was attributed to the polishing, mending, interlayer sliding effect of nanoparticles and the tribofilm induced by interfacial tribochemistry.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
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IF 21.1
Feng Long,Yulian Cao,Bo Zhang,Yuwei Chen,Yanjun Chen,Xiaolei Zhang,Hanjie Ying,Chenjie Zhu
Herein, we successfully prepared the subnanometric Ni anchored on boron and nitrogen co-doped carbon, featuring vertically aligned molybdenum disulfide (MoS₂) for hydrogenation conversion of fatty acid into alkanes. Remarkably, the Ni/MoS 2 @BNC catalyst with a relatively low Ni loading (approximately 1.0 wt%) exhibited outstanding performance and great stability, achieving complete conversion of fatty acid with octadecane and heptadecane selectivity of 94.6 % and 5.4 % at the condition of 245 ℃, 3 MPa H 2 and 6 h. Based on the density functional theory (DFT) calculations and experimental results, the excellent catalytic properties of Ni/MoS 2 @BNC catalyst are attributed to the synergistic effect between subnanometric Ni and N, B co-doped carbon material. This synergy creates abundant basic sites, modulates the electronic structure, and shifts the d-band center downward, which promotes a preferential adsorption of H 2 and CH 3 CH 2 COOH, further enhancing the hydrogenation conversion of fatty acid into alkanes.
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LANGMUIR
·
2025
·
IF 3.9
Dinghao Sun,Rong Du,Jin Zhang,Heng Zhang,Yi Li,Hang Xiao,Haibo Wang,Qingzhu Sun,Zhiyuan Ma
Improving the dispersion and compatibility of fillers in epoxy resin (EP) is crucial for enhancing the thermal stability, mechanical properties, and tribological performance of coatings. This study presents a novel biomimetic modification strategy. MoS2–TiN hybrid fillers are uniformly dispersed in the EP matrix and strongly bonded through comodification with polydopamine (PDA) and γ-aminopropyltriethoxysilane (KH550). The successful synthesis of MoS2–TiN@(PDA+KH550) fillers is confirmed by using Fourier transform infrared spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Scanning electron microscopy, transmission electron microscopy, and dispersion tests show that the aggregation of MoS2 and TiN is alleviated. Compared to pure EP, the PDA@MoS2–KH550@TiN (2:1)/EP (PMT2@EP) coating shows significant improvements in several aspects. In terms of thermal stability, the residual carbon rate at 800 °C increased from 9.38 to 11.98%. For mechanical properties, the storage modulus increased by 7.2%, the glass transition temperature (Tg) increased by 24.6%, the tensile strength increased by 42.1%, the tensile modulus increased by 60.9%, the hardness increased by 58.3%, and the flexural strength increased by 59.1%. Additionally, the coating exhibits enhanced tribological performance, with a reduction in the friction coefficient of 81.8% (from 0.555 to 0.101) and a decrease in the wear rate of 77.8% (from 11.64 × 10–5 mm3/(N m) to 2.58 × 10–5 mm3/(N m)). This biomimetic interface design provides important experimental and technical support for developing high-performance, wear-resistant, low-friction EP coatings.
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PubMed
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NEW JOURNAL OF CHEMISTRY
·
2024
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IF 2.7
Yuangong Ma,Wensheng Zhang,Zhifang Wu,Zhishan Liang,Youlin Huang,Qingmei Tan,Tianren Liu,Dongxue Han,Li Niu
In the realm of photocatalysis, effectively utilizing solar energy, especially the near-infrared (NIR) spectrum, presents substantial challenges. To tackle this issue, a novel composite of NaYF4:Yb3+/Er3+@Cu2O@MoS2@Fe3O4 (denoted as NYE@Cu2O@MoS2@Fe3O4) was ingeniously fabricated and assessed for the photodegradation of organic contaminants. By harnessing the distinct properties of upconversion materials, narrow bandgap semiconductors, and magnetic substances, the NYE@Cu2O@MoS2@Fe3O4 catalyst possesses a photodegradation rate of 92% for the rhodamine B dye under NIR light radiation, which is superior to NYE@Cu2O (50%) and NYE@Cu2O@MoS2 (85%). The enhanced performance in the near-infrared photocatalysis of NYE@Cu2O@MoS2@Fe3O4 is mainly attributed to the synergistic effect of various components, which promotes an increase in photo-induced carrier generation and facilitates their efficient transfer and energy utilization under NIR irradiation. This study provides a possible route for the near-infrared photocatalytic degradation of pollutants in areas with limited light or even dark conditions.
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TALANTA
·
2016
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IF 4.035
Hai-Yan Song,Tian-Fang Kang,Li-Ping Lu,Shui-Yuan Cheng
Single or few-layer nanosheets of MoS 2 (MoS 2 nanosheets) and a composite composed of MoS 2 nanosheets, Au nanoparticles (AuNPs) and hemin (HE) (denoted as MoS 2 -Au-HE) were prepared. The composites possessed high synergetic catalysis activity towards the electroreduction of hydrogen peroxide. Furthermore, glucose oxidase (GOD) and AuNPs were used as marker of the complementary DNA (cDNA) strand of kanamycin aptamer to prepare a conjugate (reffered as cDNA-Au-GOD) that was designed as the signal probe. Both cDNA-Au-GOD and MoS 2 -Au-HE were applied to fabricate aptasensor for kanamycin. MoS 2 -Au-HE acted as solid platform for kanamycin aptamer and signal transmitters. AuNPs were employed as the supporter of cDNA and GOD which catalyze dissolved oxygen to produce hydrogen peroxide in the presence of glucose. Then cathodic peak current of H 2 O 2 was recorded by differential pulse voltammetry (DPV). The electrochemical reduction of H 2 O 2 was catalyzed by MoS 2 -Au-HE that was modified onto the surface of a glassy carbon electrode (GCE). The cathodic peak current of H 2 O 2 was highly linearly decreased with an increase of kanamycin concentrations from 1.0 ng/L to 1.0×10 5 ng/L, with a detection limit of 0.8 ng/L. This aptasensor can be used to detect kanamycin in milk with high specificity, sensitivity and selectivity .
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