ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiaopeng Han,Huiwu Cai,Guangheng Wang,Shuai Zhang,Xudong Liu,Ying Huang
Hierarchical structural design has been verified as a feasible strategy to fabricate effective electromagnetic wave (EMW) absorbers, so we designed hierarchical core–sheath composites with magnetic particles and dielectric layers. In this work, a hierarchical structure of carbon fiber (CF)@Fe3O4@MoS2 (CPDF7-M) was prepared by introducing Fe3O4 and depositing MoS2 layers on the surface of fibers. Due to the synergistic effects from the CF@Fe3O4 increasing the conductive and magnetic loss and the outer MoS2 layers improving the impedance matching, the optimal reflection loss (RL) value was −63.1 dB at 2.7 mm and the effective absorption bandwidth (EAB) was 9.1 GHz covering the X and Ku band. Moreover, the EAB values were adjusted with a specific MoS2 loading at different thicknesses, which provided the necessary reference for the construction of efficient and flexible absorbers in the EMW absorption fields.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Hongwei Xu,Xiaxia Chen,Chao Liu,Mingyang Xu,Chenxi Guo,Yinglong Wang,Zhaoyou Zhu,Fanqing Meng
The presence of hexavalent chromium(Ⅵ) Cr(Ⅵ) and antibiotics in the environment can lead to the formation of combined pollutants that are harmful to ecosystems. To address this problem, we synthesized MoS 2 embedded in the porous super-hydrophilic polyurethane (PU) sponge and used weak water flow to drive the piezoelectric catalytic synergistic degradation of Cr(Ⅵ) and tetracycline (TC). In this study, the piezoelectric properties of MoS 2 /PU were confirmed via piezoresponse force microscopy (PFM) and COMSOL multiphysics calculations. Additionally, dynamics experiments, quenching experiments, electron paramagnetic resonance (EPR) spectroscopy, three-dimensional fluorescence excitation-emission matrix (3D-EEM) spectroscopy, and free radical generation rate analysis were conducted to explore the removal performance and mechanisms of MoS 2 /PU on the TC-Cr(VI) system. The results indicated that the coexistence of the two pollutants promotes the transfer of charge in MoS 2 /PU, further combined with O 2 to produce H 2 O 2 and continued to produce OH. The removal rates of TC and Cr(VI) in the TC-Cr (VI) mixed system at 30 min were 97 % and 94 %, respectively, which were 1.45 and 1.46 times those of the single TC and single Cr(VI) systems, respectively. Finally, potentially vulnerable sites of TC were calculated and analyzed according to density functional theory (DFT). Our results provide a new strategy for improving the degradation efficiency of antibiotics and Cr(VI) metals.
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高影响因子
Catalysts
·
2025
·Vol. 15
·期 9
·808
·
IF 4
Shuai Liu,Yipei Chen,Honglei Zhang,Yang Meng,Tao Wu,Guangsuo Yu
Constructing heterojunction photocatalysts with efficient interfacial charge transfer is critical for solar-driven hydrogen evolution. In this study, a highly dispersed MoS2/g-C3N4composite was successfully synthesized via a stirring-assisted hydrothermal in situ growth strategy. The introduction of stirring during synthesis significantly enhanced the uniform dispersion of MoS2nanosheets and exposed abundant edge sites, leading to well-integrated heterojunctions with enhanced interfacial contact. Comprehensive structural and photoelectronic characterizations (XRD, SEM, TEM, EDS mapping, UV–Vis, TRPL, EIS, EPR) confirmed that the composite exhibited improved visible-light absorption, accelerated charge separation, and suppressed recombination. Under simulated solar irradiation with triethanolamine (TEOA) as a sacrificial agent, the optimized 24% MoS2/g-C3N4-S catalyst achieved a high hydrogen evolution rate of 14.33 mmol·g−1·h−1at a catalyst loading of 3.2 mg, significantly outperforming the unstirred and pristine components, and demonstrating excellent cycling stability. Mechanistic studies revealed that the performance enhancement is attributed to the synergistic effects of Type-II heterojunction formation and edge-site-rich MoS2co-catalysis. This work provides a scalable approach for non-noble metal interface engineering and offers insight into the design of efficient and durable photocatalysts for solar hydrogen production.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Jiejie Huang,Chunying Min,Zhaolong Sun,Hang Yu,Hongyu Liang
Graphitic carbon nitride (g-C 3 N 4 ) nanomaterials have drawn much interest in the lubrication and friction fields owing to their excellent self-lubrication and mechanical performances. However, the easy agglomeration and poor dispersion stability of single g-C 3 N 4 (CN) have always been a headache. In the work, multi-dimensional ternary carbon nanotube, graphite carbon nitride, and molybdenum disulfide (CNT, CN, and MoS 2 ) hybrids were fabricated by hydrothermal method. The microstructure and its reinforcement impact on the tribological properties of the corresponding paraffin oil were systematically studied. The results showed that the zero-dimensional spherical MoS 2 , one-dimensional tubular CNT, and two-dimensional lamellar CN are uniformly compounded. The tribological test results display that average friction coefficient and wear rate of the 0.2 wt% CNT/CN/MoS 2 are decreased by 39.23% and 91.97% lower than those of pure paraffin oil, CNT and CN/MoS 2 with the same concentration, respectively. The significantly improved tribological properties of lubricating oil is ascribed to even dispersion of CNT, CN, MoS 2 in CNT/CN/MoS 2 hybrids, self-lubricating effect of MoS 2 and CN, and load-bearing ability of CNT and CN nanosheets, and also the generation of lubricating film between friction pairs during the wear process.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Si Jiang,Jun Xiao,Jieyi Tan,Xiangqi Li
Constructing heterojunctions is an important strategy for enhancing the separation efficiency of charge carriers in graphitic carbon nitride (g-C 3 N 4 ). Meanwhile, immobilization enables the recycle of g-C 3 N 4 -based photocatalysts from wastewater. Herein, a visible light-responsive MoS 2 and SnO 2 co-modified g-C 3 N 4 ternary heterostructure was synthesized via one-pot calcination and subsequently immobilized in a modified bacterial cellulose (BC) aerogel through freeze-drying. The prepared ternary heterojunction exhibited enhanced visible light-harvesting capacity and charge separation efficiency due to intimate interfaces and the synergy effect of different components. It showed a degrade rate constant 3.43 times higher than that of g-C 3 N 4 , and degraded 99.3 % of RhB (30 mg/L) at pH 6.5 after 30 min of irradiation, and 99.1 % at pH 5 after 15 min. Owing to dispersion improved by sodium dodecyl benzene sulfonate (SDBS) and the strength and hydrophobicity enhanced by methoxytrimethylsilane (MTMS), the prepared aerogel degraded 98.7 % of RhB (30 mg/L) at 60 min irradiation, and maintained 94.0 % after 6 cycles. This work demonstrates a highly efficient MoS 2 -SnO 2 -g-C 3 N 4 ternary photocatalyst and a practical immobilization route for application in purification of dye wastewater.
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Analytical Methods
·
2020
·Vol. 12
·期 36
·4466-4472
·
IF 2.596
Yunxia Yuan,Huichun Yu,Yong Yin
A novel sensitive aptasensor for vascular endothelial growth factor-165 (VEGF165) was constructed based on fluorescence resonance energy transfer (FRET) by employing upconversion nanoparticles (UCNPs) and MoS2 nanosheets as the energy donor and acceptor, respectively. The upconversion fluorescence resonance energy transfer (UC-FRET) was triggered by the physical adsorption interaction between the aptamer and MoS2 nanosheets, leading to a remarkable quenching of UCNP fluorescence up to 95%. Upon addition of VEGF165 to the UCNP–aptamer system before MoS2 nanosheets were added, the aptamer preferentially bound to VEGF165 with the change of spatial conformation, which weakened the van der Waals' force between the MoS2 nanosheets and the aptamer, thus leading to the separation of the donor and the acceptor. Consequently, the FRET phenomenon was inhibited and the luminescence of UCNPs was regained, which was linearly related to the concentration of VEGF165 in the range of 0.1 ng mL−1 to 16 ng mL−1. By taking advantage of the extreme fluorescence quenching ability of MoS2 nanosheets and the optical merits of UCNPs, the aptasensor based on UC-FRET exhibited favorable performance for the homogeneous assay of VEGF165 in human serum, which is of great value for clinical diagnosis of tumors and related biological studies.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2015
·Vol. 25
·期 23
·3541-3550
·
IF 11.805
Bang Lin Li,Hao Lin Zou,Lu Lu,Yu Yang,Jing Lei Lei,Hong Qun Luo,Nian Bing Li
Size-dependent optical absorption of semiconductive (2H) layered molybdenum disulfide (MoS 2 ), exhibiting great discrimination abilities to single- and double-stranded DNA (ssDNA) and (dsDNA), is studied. In the presence of high concentration of salt, layered MoS 2 trends to aggregate rapidly, leading to the increases of sizes in both vertical and lateral dimensions of the nanosheets, which results from the interplay between van der Waals attraction and electrical double-layer repulsion. Meanwhile, the aggregation behavior of layered MoS 2 is remarkably inhibited by the synergistic effects of DNA oligonucleotides. ssDNA can adsorb on the surface of layered MoS 2 , resulting in a great dispersion, even in the presence of high concentration of salt, while the dispersion behavior is weakened when ssDNA is replaced by dsDNA. Whereas compared to graphene with zero bandgap energy, layered MoS 2 , with semiconductive properties, exhibits great characteristic optical absorption in visible wavelength region devoted to exploring the aggregation behavior of layered MoS 2 . Therefore, DNA oligonucleotides induced size control of layered MoS 2 , contributing to the regular change of its characteristic absorption in visible region, is considered a label-free bioassay for the detection of single-nucleotide polymorphism. Due to its easy operation and high specificity, it is expected that the proposed assay holds great promise for further applications.
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Nano Research
·
2017
·Vol. 11
·期 2
·831-844
·
IF 7.354
Wang Yunhui,Li He,Zhang Yiyong,Peng Yueying,Zhang Peng,Zhao Jinbao
Owing to their unique structural stability and impressive long-term cycling performance, coated hollow structures are highly attractive for energy storage systems, especially batteries. Many efforts have been devoted and various strategies have been proposed to prepare such materials. In the present work, we propose a self-templating thermolysis strategy, different from traditional wet processing methods, to fabricate cuprous sulfide hollow spheres coated with different shells, by exploiting the thermal decomposition properties of the core (CuS) and the protection provided by the shell. To demonstrate the generality of this synthetic approach, three different coating materials (carbon, TiO 2 , MoS 2 ) have been chosen to prepare Cu 2– x S@C, Cu 2– x S@TiO 2 and Cu 2– x S@MoS 2 hollow spheres. All synthesized composite materials were then assembled as electrodes and tested in lithium batteries, showing excellent cycling stability. In particular, the electrochemical properties of Cu 2– x S@C were thoroughly investigated. The results of this work provide an alternative route to prepare coated metal sulfide hollow spheres for energy storage applications.
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DESALINATION
·
2021
·
IF 9.501
Yanmeng Cai,Wen Zhang,Rongli Fang,Dongdong Zhao,Yue Wang,Jixiao Wang
Capacitive deionization (CDI) has aroused significant concern for its application in treating low-concentration brackish water. However, some carbonaceous materials suffer from the limited salt adsorption capacity (SAC), sluggish adsorption kinetics , and inferior selectivity to particular ions. Hence, we develop the well-dispersed few-layered two-dimensional pseudocapacitive material MoS 2 connected with a robust 3D conductive architecture constructed by carbon nanotubes (CNT) and carbon spheres (CS) (MoS 2 @CNT-CS). The enhanced dispersibility and expanded interlayer of MoS 2 nanosheets provide sufficient faradic effective sites for ion storage and transfer, while the interlaced carbonaceous network affords improved hydrophilicity , convenient electron transport path, and low charge transfer resistance for fast charge transportation and permeation. Therefore, the asymmetric hybrid CDI cell (CNT-CS for anode and MoS 2 @CNT-CS for cathode) delivers a prominent SAC (25.35 mg g −1 ), fast SAR (3.9 mg g −1 min −1 ), enhanced desalination kinetics, and favorable cycling stability. In addition, the specific ion selectivity of MoS 2 @CNT-CS electrode was evaluated systematically in the equimolar multi-salt solutions, and a selectivity order of Ca 2+ > Na + > Mg 2+ > K + was obtained. The molecular dynamic (MD) calculation provides the lowest intercalation energy for Ca 2+ (−2.55 eV), further confirming the strong interaction and preferable pseudocapacitive deionization of MoS 2 @CNT-CS electrode to Ca 2+ over other cations.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Yanli Chen,Fengyun Su,Haiquan Xie,Ruiping Wang,Chenghua Ding,Jindi Huang,Yixue Xu,Liqun Ye
Step-scheme (S-scheme) heterojunctions of S-doped g-C 3 N 4 (SCN) and N-doped MoS 2 (NMS) were constructed by a one-step thermal polycondensation method in Ar atmosphere using thiourea and ammonium tetrathiomolybdate as starting materials. X-ray photoelectron spectra revealed the formation of new N-Mo and C-S-Mo bonds between SCN and NMS and enhanced NMS purity. The as-prepared NMS/SCN with an NMS ratio of 19.3 wt% showed the highest photocatalytic activity. Within 4 h of illumination, its H 2 generation rate reached 658.5 μmol/g/h, which was about 23 and 38 times higher than that of pure SCN (28.8 μmol/g/h) and NMS (17.4 μmol/g/h), respectively. UV–vis diffuse reflectance spectra (DRS), surface photovoltage spectrum (SPV), photoluminescence (PL) spectra and electrochemical tests revealed the extended visible light absorption and enhanced photo-generated carrier separation of the formed S-scheme heterojunction. The mechanism and driving force of charge transfer and separation in S-scheme heterojunction photocatalysts are investigated and discussed.
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CHEMISTRY-A EUROPEAN JOURNAL
·
2022
·Vol. 28
·期 71
·e202202410
·
IF 5.02
Yong Gao,Dani Zhang,Jingjing Li,Hao Gong,Cheng Jiang,Hairong Xue,Xianli Huang,Tao Wang,Jianping He
Graphical The P doped MoS 2 @Ni 3 S 2 nanorods array with core/shell structure was prepared through successive sulfuration and phosphorization strategies, which exhibits close catalytic activity to Pt/C, the overpotential is only 290 mV at 250 mA cm −2 . Electrocatalysis is the most promising strategy to generate clean energy H 2 , and the development of catalysts with excellent hydrogen evolution reaction (HER) performance at high current density that can resist strong alkaline and acidic electrolyte environment is of great significance for practical industrial application. Therefore, a P doped MoS 2 @Ni 3 S 2 nanorods array (named P-NiMoS) was successfully synthesized through successive sulfuration and phosphorization. P-NiMoS presents a core/shell structure with a heterojunction between MoS 2 (shell) and Ni 3 S 2 (core). Furthermore, the doping of P modulates the electronic structure of the P-NiMoS; the electrons transfer from the t 2g orbital of Ni element to the e g empty orbital of Mo element through the Ni−S−Mo bond at the Ni 3 S 2 and MoS 2 heterojunction, facilitating the hydrogen evolution reaction. As a result, P-NiMoS exhibits excellent HER activity; the overpotential is 290 mV at high current density of 250 mA cm −2 in alkaline electrolyte, which is close to Pt/C (282 mV@250 mA cm −2 ), and P-NiMoS can stably evolve hydrogen for 48 h.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Peiyuan Mao,Yong Wang,Pandeng Xiao,Wen Zhang,Shun Rao,Zhi Wang
Herein, we demonstrate the reasonable design and preparation of yolk-heteroshell Sn@N-doped C@MoS 2 nanospheres as anode materials in sodium-ion battery. Through an effective multi-step strategy, Sn nanoparticles are encapsulated in N-doped C nanocage surrounded by ultra-thin MoS 2 nanosheets to form Sn@N-doped C@MoS 2 nanospheres. In this novel structure, Sn nanoparticles with high theoretical capacity improve the space utilization inside the heteroshell; the N-doped carbon nanocage as the skeleton not only inhibits the mutual accumulation of Sn and MoS 2 , but also improves conductivity; the outer MoS 2 ultra-thin sheets can consolidate C@MoS 2 heteroshell, provide numerous active sites and favor the fast diffusion of Na + /e - . Notably, the combination of carbon nanocage and MoS 2 sheets in the yolk-heteroshell structure can effectually buffer the volume expansion of Sn nanoyolks and reinforce C@MoS 2 heteroshell while reducing the carbon content. Therefore, the yolk-heteroshell structure plays a crucial role in enhanced reversible capacity and cyclic stability of Sn@N-doped C@MoS 2 nanospheres, which activates their sodium storage potential. The yolk-heteroshell Sn@N-doped C@MoS 2 nanospheres exhibit high reversible capacity of 488.4 mAh g −1 at 0.1 A g −1 after 300 cycles and long-cycle stability of 350.6 mAh g −1 at 0.5 A g −1 after 500 cycles. Moreover, their full cell delivers a stable reversible discharge capacity of about 80.1 mAh g −1 after 30 cycles at 0.5 C. This work provides a feasible yolk-heteroshell strategy for Sn-based composite nanomaterials .
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