SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Fuqiang Zhao,Zhuangzhuang Ma,Peijin Zou,Jiale Zhang,Ziyao Wei,Lichao Jia
In complex practical environments, gas sensors with exceptional anti-interference capabilities are highly desirable. Nevertheless, developing metal oxide-based NO 2 gas sensors that maintain excellent humidity resistance at relatively low temperatures remains a significant challenge. In this work, Metal-organic framework-derived In 2 O 3 @MoS 2 heterojunctions were successfully fabricated, which demonstrate remarkable NO 2 sensing performance characterized by low operating temperature, high selectivity, and outstanding humidity tolerance. Significantly, at near room temperature, the sensor demonstrates negligible response fluctuation of only 1.03 % to 10 ppm NO 2 across a wide relative humidity (RH) range of 15 %-85 %. Even at 65 % RH conditions, it still achieves a low detection limitation of 50 ppb. Further analysis reveals that edge-terminated unsaturated sulfur (S) atoms are the key factor for the enhanced sensing performance. Both porous strueture and enhanced charge transfer are also conducive to the enhancement. These findings highlight the potential of In 2 O 3 @MoS 2 -based gas sensor as promising candidates for reliable NO 2 detection in high-humidity environments.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yuqing Pan,Zechu Deng,Ning Liu,Chengna Dai,Biaohua Chen
The alkaline hydrogen evolution reaction (HER) suffers from sluggish kinetics, mainly due to the high energy barrier for water dissociation and mismatched adsorption-desorption balance of key intermediates (H* and OH*). To address this challenge, this study employs a dual-functional strategy combining Co doping and in-situ CO regulation to construct a Co-MoS 2 support with abundant sulfur vacancies (Sᵥ). These Sᵥ can efficiently anchor Ru species as highly dispersed, electron-deficient Ru 4+ state, which leads to excellent alkaline HER performance of Ru 8% @Co-MoS 2 -CO by displaying a low overpotential of 46 mV at 10 mA cm −2 and a Tafel slope of 62 mV dec −1 . Combined experimental characterization and DFT (density functional theory) calculations reveals that Co-Sᵥ synergy not only optimizes Ru’s electronic structure with downshift d band center but also finely modulates the electronic properties of adjacent S site, which thereby enables precise tuning of the adsorption/desorption (ADT) behavior of OH* and H*. Meanwhile, the significantly increased electronic density around the Fermi energy (E F ) leads to enhanced efficiently electronic conductivity of Ru 8% @Co-MoS 2 -CO, as also verified by the SECM measurement, which constitutes another key factor leading to its excellent alkaline HER activity. In addition to that, it is also interestingly found that there probably also exists another route for H evolution, wherein the H* can migrate from the S site to the Ru site by crossing a low energy barrier of 0.83 eV and be evolved into H 2 by following Tafel route, jointly boosting reaction efficiency. Generally, present work provides atomic-scale insights and references for designing high-performance electrocatalysts via defect engineering-regulated metal-support interactions, which would favor other highly-efficient alkaline HER catalyst designs.
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ELECTROCHIMICA ACTA
·
2026
·
IF 5.6
Panpan Zhang,Yongkang Meng,Zihan Xu,Mikaiergu Sulitan,Chunsheng Lu,Yangyang Yang,Xiaowei Li,Yu Zhou,Yunjian Liu
The 2H-MoS 2 /N-doped carbon (2H-MoS 2 /NC) composite has demonstrated great promise as an anode material for sodium-ion batteries (SIBs); however, its rate performance and cycling capability are still limited by the intrinsically poor electronic conductivity and the scarcity of in-plane active sites in 2H-MoS 2 . In this paper, Mn doping is applied as an effective strategy to overcome these limitations. A Mn-doped 2H-MoS 2 /NC (Mn-2H-MoS 2 /NC) composite is successfully synthesized via a simple one-step hydrothermal-calcination process. Electrochemical evaluations show that the Mn-2H-MoS 2 /NC electrode delivers a reversible specific capacity of 301.42 mAh g –1 after 150 cycles at a current density of 1 A g –1 . Especially, even at a high current density of 5 A g –1 , a capacity of 131.66 mAh g –1 is retained after 500 cycles. This performance far exceeds that of the pristine 2H-MoS 2 /NC anode (51.12 mAh g –1 ). Experimental and theoretical analyses reveal that Mn doping not only serves as an effective microstructural regulator (expanding the interlayer spacing and reducing the stacking layer of MoS 2 ) but also intrinsically transforms MoS 2 from a semiconductor into a conductor while increasing the density of active sites within and on the MoS 2 lattice. These synergistic effects facilitate rapid electron transport, accelerate Na + adsorption and intercalation, and enhance the reversibility of the conversion reaction. Consequently, Na + storage kinetics is significantly improved, leading to the superior cycling stability and rate performance of the Mn-2H-MoS 2 /NC electrode.
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MICROCHIMICA ACTA
·
2018
·Vol. 185
·期 12
·530
·
IF 5.705
Ding Chuanmin,Song Kaijing,Meng Hongyun,Zhang Bing,Zhao Zhihuan,Chang Honghong,Wei Wenlong
The authors describe an amplified photoelectrochemical immunoassay for the tumor marker carbohydrate antigen 724 (CA724). The method employs a C 3 N 4 -MoS 2 semiconductor as the photoelectric conversion layer. The nanocomposite was characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray powder diffraction, and UV-vis diffuse reflectometry. The dye eosin Y was encapsulated into CaCO 3 nanospheres which then were used as labels for antibody against CA724. In addition, Fe 3 O 4 nanospheres were employed as magnetic platform for constructing photoelectrochemical sandwich immunoassay. The CaCO 3 nanospheres can be dissolved with aid of ethylene diamine tetraacetic acid (EDTA) and the carried eosin Y in CaCO 3 is released. The released dyes sensitizes the C 3 N 4 -MoS 2 semiconductor, which induces photocurrent amplification. Under optimal conditions and at a typical working voltage of 0 V (vs. SCE), the photocurrent increases linearly in the range of 0.05 mU mL −1 to 500 mU mL −1 of CA724, with a 0.02 mU mL −1 detection limit.
The C 3 N 4 -MoS 2 complex, with high efficiency of electron transport, was synthesized to construct a photoelectrochemical analytical platform. A sandwich-type immunoassay was established on the surface of magnetic beads. Carbohydrate antigen 724 in sample was detected sensitively by using sensitization of released eosin Y as signal amplifiery.
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RSC Advances
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2019
·Vol. 9
·期 72
·42316-42323
·
IF 3.049
Chong Wang,Changzhen Zhan,Xiaolong Ren,Ruitao Lv,Wanci Shen,Feiyu Kang,Zheng-Hong Huang
Lithium ion capacitors (LICs), bridging the advantages of batteries and electrochemical capacitors, are regarded as one of the most promising energy storage devices. Nevertheless, it is always limited by the anodes that accompany with low capacity and poor rate performance. Here, we develop a versatile and scalable method including ball-milling and pyrolysis to synthesize exfoliated MoS2 supported by N-doped carbon matrix derived from chitosan, which is encapsulated by pitch-derived carbon shells (MoS2/CP). Because the carbon matrix with high nitrogen content can improve the electron conductivity, the robust carbon shells can suppress the volume expansion during cycles, and the sufficient exfoliation of lamellar MoS2 can reduce the ions transfer paths, the MoS2/CP electrode delivers high specific capacity (530 mA h g−1 at 100 mA g−1), remarkable rate capability (230 mA h g−1 at 10 A g−1) and superior cycle performance (73% retention after 250 cycles). Thereby, the LICs, composed of MoS2/CP as the anode and commercial activated carbon (21 KS) as the cathode, exhibit high power density of 35.81 kW kg−1 at 19.86 W h kg−1 and high energy density of 87.74 W h kg−1 at 0.253 kW kg−1.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Cheng Pan,Changlin Dong,Wenshu Chen,Shenhua Qian,Jingxiang Yin,Yongping Du,Leiming Lang,Guoqiang Luo,Jian Zhang
Monolayer Pt doped 1T phase MoS 2 quantum sheets (Pt/1T–QSs) were synthesized. • The Pt/1T–QSs show 70% metallic 1T phase with a lateral size of ca. 6.1 nm. • Pt doping collaboratively activate both basal and edge sites of MoS 2 for HER. • The Pt/1T–QSs exhibit exceptional alkaline HER performance. Transition metal disulfides (TMDs) are considered as promising alkaline hydrogen evolution reaction (HER) catalysts; however, their catalytic activity remains far from satisfactory. This is primarily due to the relatively low HER activity of both basal and edge sites. Herein, a strategy of synthesizing Pt doped 1T phase MoS 2 quantum sheets (Pt/1T–QS) for co-activating both basal and edge sites is reported for addressing the aforementioned issue. The developed strategy employs a wet-chemical synthetic route encompassing a hydrothermal doping reaction, a subsequent chemical lithiation, and a final liquid exfoliation process to prepare the desired Pt/1T–QSs (monolayered with lateral size of ca. 6.1 nm). Notably, the Pt/1T–QSs demonstrate exceptional alkaline HER performance, presenting a low overpotential of 203 mV at 300 mA cm −2 and excellent durability for over 120 h at 100 mA cm −2 in 1 M KOH. Theoretical calculations reveal that Pt doping induces pronounced up-shifts for the p −/ d –band centers and collaboratively optimized ΔG H at both basal and edge sites in 1T–QS, thereby accelerating water dissociation kinetics and enhancing alkaline HER performance. This work offers a generalizable strategy for overcoming the conventional edge-dominated activity paradigm of TMD-based catalysts and may advance the rational design of high-performance alkaline HER catalysts with multi-site activation. A rational designed catalyst of Pt doped 1T phase MoS 2 quantum sheet (Pt/1T–QS) material was prepared, characterized by monolayer thickness, quantum sized, dominant 1T phase, and uniformly distributed Pt dopants. The Pt doping collaboratively activates both the basal and edge sites of 1T–QS by accelerating water dissociation kinetics and optimizing hydrogen adsorption energies, resulting in outstanding alkaline HER performance. Download: Download high-res image (150KB) Download: Download full-size image
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MATERIALS TECHNOLOGY
·
2026
·
IF 4
Jingjing Zhang,Xuehai Dong,Zhaoyang Zeng
Diabetic ulcer treatment is complicated by bacterial infections and immune microenvironment dysregulation. This study developed a multifunctional composite hydrogel by non-covalently functionalizing molybdenum disulfide with tannic acid and integrating it with silk fibroin. The resulting hydrogel demonstrates superior dispersion and photothermal properties, reaching 65.1 °C under near-infrared irradiation while minimizing mechanical damage to host cells. In vitro results confirm significant synergistic photothermal bactericidal effects against E. coli and S. aureus. Furthermore, the hydrogel remodels the immune microenvironment by downregulating inflammatory factors (TNF-α, IL-6) and upregulating M2 macrophage markers (CD206, IL-10). The incorporation of SF further improves biocompatibility and promotes fibroblast migration and proliferation. This TA-MoS2-SF hydrogel provides a promising ‘antibacterial-immunomodulatory-repair’ strategy for clinical DU management.
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Biomaterials Advances
·
2025
·
IF 6
Gao Pan,Qi Zhong,Tiange Wang,Xiuwen Gao,Huixing Li,Jiajun Li,Hui Yang,Cijun Shuai,Shuping Peng
Molybdenum disulfide (MoS 2 ), a typical piezoelectric sonosensitive material, holds great promise in ultrasound-activated catalytic antibacterial applications and osteogenic differentiation promotion. However, it has two key limitations: rapid carrier recombination leading to insufficient antibacterial activity; and difficulty in forming stable interfaces with biopolymers as an inorganic compound, which impairs effective sonocurrent transmission in heterojunction scaffolds for osteogenesis induction. To address these issues, we proposed a multi-beneficial strategy: anchoring Cu-MOF to MoS 2 via Cu S chemical bonds to construct a Type-II MoS 2 /Cu-MOF heterojunction. Under ultrasonic stimulation, this heterojunction undergoes polarization to form a built-in electric field, accelerating carrier separation and enhancing catalytic efficiency. Additionally, Cu-MOF releases Cu + and Cu 2+ ions, which undergo Fenton-like reactions with bacterial endogenous H 2 O 2 and glutathione to generate hydroxyl radicals via chemodynamic effects, increasing reactive oxygen species (ROS) production; the resultant oxygen further boosts sonodynamic efficiency. Furthermore, Cu 2+ in MoS 2 /Cu-MOF forms metal coordination bonds with carboxyl groups in poly-l-lactic acid (PLLA) macromolecules, constructing an interfacial “Line-Point-Plane” ternary structure that enhances interfacial electron transfer efficiency, facilitates sonocurrent transmission, and thus effectively realizes electrical stimulation for osteogenic differentiation. Specifically, we incorporated the heterojunction into PLLA matrix powder and fabricated MoS 2 /Cu-MOF/PLLA heterojunction scaffolds via selective laser sintering (SLS). Under ultrasonic stimulation, these scaffolds achieve synergistic sono/chemodynamic antibacterial activity, while ultrasound-activated sonocurrents transmit through the ternary interfacial structure of the heterojunction scaffolds to effectively induce osteogenic differentiation. Results showed that compared to pure MoS 2 scaffolds, the heterojunction scaffold exhibited a 0.4 eV narrower band gap and a 350 Ω lower impedance, with antibacterial rates of 97.3 % and 98 % against Staphylococcus ( S.aureus ) and Escherichia coli ( E.coli ), respectively. Notably, under ultrasonic irradiation, the upregulation of osteogenic factors such as Wnt-10b is induced, and osteoblast differentiation is promoted simultaneously; the results indicate that osteogenic factors like Wnt-10b have a potential role in promoting osteoblast differentiation under ultrasonic conditions.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Qijing Guo,Hao Yi,Feifei Jia,Shaoxian Song
Phase change materials (PCMs) offer significant advantages in energy conversion and storage by facilitating the storage and release of thermal energy during phase transition processes. However, challenges such as leakage during PCM phase transitions and poor light absorption properties have constrained their application in the field of photothermal energy storage. In this study, Montmorillonite (Mt) and molybdenum disulfide (MoS 2 ) has been used to design and synthesize hybrid aerogels (MoS 2 /Mt) boasting high mechanical strength and excellent photothermal conversion performance. These aerogels are then used to encapsulate polyethylene glycol (PEG) to prepare composite PCMs with outstanding solar-thermal conversion and storage performances. The results show that the synthesized MoS 2 /Mt-PEG composite PCMs exhibit high enthalpies of melting and solidification of 169.16 J/g and 170.78 J/g, respectively, while the aerogel supporting material has a high compressive modulus of 1.96 MPa. Moreover, the composite material displayed excellent thermal stability and leakage resistance after undergoing 30 melting-cooling cycles. Furthermore, the incorporation of MoS 2 imparted outstanding light absorption properties to the MoS 2 /Mt-PEG composite, resulting in a high light absorption and photothermal conversion-storage efficiency of 93.4 % and 96.47 %, respectively. Synthesized composite PCMs also demonstrate outstanding performance in solar-thermal-electricity conversion, achieving a voltage output of 458 mV under illumination conditions and maintaining a sustainable voltage output even after removing the light source. Thus, the composite PCMs prepared in this work can meet the requirements of high enthalpy, effective leakage prevention, efficient solar-thermal conversion and solar-thermal-electricity conversion performance, thereby presenting potential applications in practical solar energy collection, conversion, and storage.
研究领域:
材料科学
·
能源化学
·
纳米复合材料
·
热能存储
·
光热转换
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高影响因子
ADVANCED POWDER TECHNOLOGY
·
2023
·
IF 5.2
Tingting Mao,Qihui Ding,Qian Shan,Xiaochen Chang,Wei Wu
In this paper, a magnetic ferrosoferric oxide/two-dimensional molybdenum disulfide (Fe 3 O 4 /2D-MoS 2 ) composite material was successfully prepared by combining liquid phase exfoliation and in-situ liquid phase co-precipitation methods with scalable and facile characteristics and applied to catalyze the degradation of tetracycline (TC) during the peroxymonosulfate-based advanced oxidation processes (PMS-AOPs), which is a typical and widely used antibiotic. The morphology and crystallinity of the composites were determined by scanning electron microscopy, transmission electron microscope and X-ray diffraction, respectively. And its BET surface area was tested by N 2 adsorption and desorption curves. For the PMS-AOPs, the effects of iron loading, different systems, initial concentration of pollutants, dosage of the composites, concentration of peroxymonosulfate (PMS) and solution initial pH on the removal of TC were researched in details. The results showed that it could reach 89.0% degradation efficiency within 90 min for 50 mg/L TC with the as-prepared composites as catalyst, showing good catalytic performances. In addition, the mechanisms of the reaction were deduced by quenching experiments and X-ray photoelectron spectroscopy analysis. It was turned out that the as-synthsized material has a broad applying prospect in PMS-AOPs.
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Chemistry-An Asian Journal
·
2023
·Vol. 18
·期 10
·e202300166
·
IF 4.1
Yu Zhang,Douxin Xiao,Alideertu Dong
Graphical A dopamine-modified oxidized hyaluronic acid was used as the backbone of a hydrogel, which was physically mixed with Fe 3+ , poly(lysine) and glucose oxidase loaded onto PEI-coated MoS 2 nanosheets to construct a multimodal synergistic antibacterial hydrogel. It is combined with the cationic antimicrobial properties of the hydrogel and the photothermal effect of MoS 2 to achieve multimodal synergistic bactericidal action. Given the poor antibacterial activity of hydrogels, a multimodal synergistic antibacterial hydrogel based on dopamine-modified oxidized hyaluronic acid was developed, and its antibacterial activity and biocompatibility were demonstrated. First, dopamine-modified oxidized hyaluronic acid (OHA-DA) was used as the hydrogel backbone. A dual-dynamically cross-linked injectable hydrogel was constructed by mixing OHA-DA, Fe 3+ with cationic antimicrobial peptide polylysine (EPL) via Schiff base and coordination complexation. Next, glucose oxidase-loaded MoS 2 nanosheets were synthesized through electrostatic interaction and loaded into the hydrogel through physical mixing. Finally, a multimodal synergistic antibacterial hydrogel OD/EPL/GM was obtained. Antibacterial experiments show that the hydrogel has good antibacterial activity against E. coli and S. aureus , and the antibacterial rate can reach 99.99%.
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PubMed
高影响因子
Advanced Sustainable Systems
·
2022
·Vol. 7
·期 2
·2200387
·
IF 6.737
Meng He,Zhihao Li,Yujie Guo,Maofeng Zhang,Zhengdong Zhu,Xiaoyi Shi,Konghao Han,Youju Huang,Honglin Liu
The practical application of surface-enhanced Raman spectroscopy (SERS) technology for quantitative analysis still confronts the hinder of controlling the uniformity of signal and anchoring target molecules in a designed space. Herein, a facile method of devising the shrinkage of three-dimension (3D) hot spots droplets on a hydrophobic array substrate is demonstrated for the quantitative and multiplex detection of pesticide residues by using a portable Raman spectrometer. The shrunk droplet which is consisted of the analyte solution and AgNPs sol can induce simultaneously increasing density of plasmonic hot spots and immobilizing target molecules in hot spots. Besides, the closely packed Ag nanoparticles (AgNPs) are anchored in the gaps of the MoS 2 nanosheet array, generating uniform hotspots distribution with relative standard deviation (RSD) of about 8 %. In addition, the synergetic effects between MoS 2 and AgNPs further enhance the SERS sensitivity, and thereby target molecules of 10 −9 m are readily detected. Besides, the proposed strategy exhibits excellent SERS sensitivity for the analysis of pesticides down to 10 −8 m . Importantly, quantitative analysis and multi-components detection of pesticide residues on honeysuckle surface are achieved. Therefore, it is expected to be used for quantitative analysis of complex pesticide systems on real samples.
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