INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
·
IF 8.3
Jiabo Wang,Wenxin Wang,Zhentao Liu,Dong Wang,Yingzhi Shi,Li Chen
Rational heterointerface design is an effective strategy to improve electrocatalytic water splitting. MoP and MoS 2 show “Pt-like” activity but are limited by slow alkaline water dissociation and a high hydrogen-adsorption barrier, respectively. Here, we synthesize MoP–MoS 2 @N-doped carbon (MoP–MoS 2 @NC) heterojunctions through a cysteine-assisted multi-anion coordination and in situ carbonization route. This strategy differs from traditional phosphorization-sulfurization or post-assembly routes. l -cysteine supplies S, N, and C and directs precursor formation, inducing stepwise Mo reduction and programmable MoP/MoS 2 growth during annealing. Precise regulation of the multi-anion coordination environment is realized by adjusting the cysteine dosage, which yields optimal MoP/MoS 2 interfacial coupling. Additionally, cysteine carbonization forms conductive N-doped carbon that further improves performance. The optimized catalyst delivers 115 mV at 10 mA cm −2 and a 66.98 mV dec −1 Tafel slope with excellent stability. This study presents a concise route to multi-anion-derived heterojunction catalysts for efficient hydrogen evolution.
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高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Fangfang Zhou,Zhiman Bai,Peng Dai,Tongtong Jiang,Mingzai Wu
Due to the high energy density, inherent safety, and cost-effectiveness, aqueous zinc-ion batteries (AZIBs) have been recognized as promising solution for energy storage. Compared to the 2H phase of MoS2, the metallic 1T phase counterpart holds greater potential for application in AZIBs, owing to its higher electrical conductivity and favorable two-dimensional channel structure. Herein, a facile one-step hydrothermal approach was employed to synthesize stable and 1T-rich MoS2 hybrids (MoS2-l-Cys) using l-cysteine as an intercalation modifier. This approach simultaneously induces a spontaneous phase transition from the semiconducting 2H to metallic 1T phase and expands the interlayer spacing of MoS2. The metallic 1T phase of MoS2 promotes electrons transfer, while the expanded interlayer spacing accelerates the Zn2+ ions’ diffusion kinetics and exposes more active sites. These synergistic effects collectively boost charge transfer kinetics of the Zn2+ ions’ redox reaction, thereby dramatically improving the electrochemical performance of AZIBs. Therefore, the discharge specific capacity of the MoS2-l-Cys electrode is as high as 279.0 mAh g–1 with outstanding rate capability. Furthermore, the MoS2-l-Cys electrode exhibits exceptional cycling stability, with a capacity retention of 91.4% after 1000 cycles at 4 A g–1, due to that the expanded interlayer spacing can effectively mitigate volume variations of MoS2-l-Cys during cycling. This work systematically elucidates the crucial role of l-cysteine intercalation-induced phase transition in optimizing reaction kinetics, providing a viable and effective strategy for developing MoS2-based cathodes for high-performance AZIBs.
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高影响因子
RSC Advances
·
2017
·Vol. 7
·期 38
·23415-23421
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IF 3.108
Sheng Yuan,Ming-Jian Zhang,Xiaoyang Yang,Zongwei Mei,Yongji Chen,Feng Pan
MoS2, a representative two-dimensional transition metal dichalcogenide, gains significant interest due to its unique layered structure and electronic structure. In this work, a novel MoS2-based hybrid thin film was constructed by disordered stacking of MoS2–NMP hybrid particles, which were mainly composed of MoS2(NMP)3 molecules stacking in a nearly-parallel manner through S⋯H–C hydrogen bonds. Interestingly, it presents a higher work function (5.42 eV) than Au (5.32 eV), and a unique thickness-dependent conductivity with p-type semiconductor characteristic. Using it as the back contact of CdTe solar cells, the efficiency was improved by 2.6% compared to the traditional cells, mainly from the great improvement in short-circuit current density (Jsc). This significant improvement in solar performance was ascribed to the matchable energy levels at the CdTe/MoS2-based thin film interface and its unique thickness-dependent conductivity. This work opens a new direction for the extensive applications of TMD-based materials.
研究领域:
材料科学
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光伏技术
·
纳米材料
·
半导体物理
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表面科学
·
能源材料
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2018
·
IF 2.829
Yueyun Fang,Qizhang Huang,Pengyi Liu,Jifu Shi,Gang Xu
This study demonstrated high-efficient dye adsorption for wastewater using MoS 2 -glue sponge as an easy-separative and regenerative adsorbent. Flower-like molybdenum disulfide (MoS 2 ) nanopowders with rich polar edge sites were firstly synthesized by a facile one-pot hydrothermal method . Chemical and morphological features of MoS 2 nanoflowers were then examined by XRD , XPS , SEM and TEM . Afterwards, different concentrations of the MoS 2 -glue sponges with easy separability were successfully fabricated by a convenient two-step dip-coating method. The adsorption performance was estimated by the removal of Rhodamine B (RhB) dyes. The results proved that the maximum adsorption capacity of MoS 2 -glue sponge was 127.39 mg RhB/g product in 60 min. The RhB uptake behaviors can be well described by the Sips isotherm model and pseudo-second-order kinetic model , indicating a multilayer and chemical adsorption process. The adsorption mechanism proposed that the zwitterionic RhB molecules in aqueous solution would aggregate on the surface of negative charged MoS 2 in a head-to-tail way through electrostatic interaction . Furthermore, RhB dyes could desorb easily from MoS 2 -glue sponges when changing the polarity of solvent and the reusability experiment showed that the MoS 2 -3% glue sponge could be reused for 15 times with above 85.8% of the adsorption capacity retained. Thus, the novel MoS 2 -glue sponge is considered as a competitive adsorbent for treatment of dyestuff waste water.
研究领域:
环境科学
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材料科学
·
纳米技术
·
化学工程
·
水污染控制
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DOI
高影响因子
Small
·
2022
·Vol. 18
·期 29
·2202622
·
IF 15.153
Hao Zhu,Zixuan Chen,Yun Chen,Jun-Jie Zhu
Quantifying the binding kinetics and affinities of protein–small molecule interactions is critical for biomarker validation, drug discovery, and deep understanding of various biological processes at the molecular-scale. Novel approaches are demanded as most common label-free techniques are mass-sensitive, which are not suitable for the detection of small molecule interactions. Here, an optical imaging platform is developed to measure the binding kinetics of both protein–small molecules and protein–ions based on monolayer MoS 2 , an ultra-thin 2D material whose optical absorption is extremely sensitive to charge. A model is established to calibrate the optical response due to the charged analyte binding and it is applied to quantify the interactions between abl1 kinase and different small-molecule inhibitors. Such a presented method is capable of distinguishing different inhibitors binding to a wild or mutated kinase, which provides guidance for drug evaluation and drug mechanism exploration. The binding kinetics of calcium ions to calmodulin is also measured, further broadening the application field of the method. In addition, the imaging capability allows mapping the local binding kinetics of the molecular interactions with a high resolution, which reveals visible spatial variability and offers a promising tool for studying heterogeneous local interfacial interactions.
研究领域:
分子生物学
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药物发现
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生物传感器
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化学生物学
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生物物理
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转化医学
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纳米生物技术
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高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Haiyan Zhang,Gai Qin,Yingxi Lin,Danfeng Zhang,Haiyang Liao,Zhenghui Li,Jingyang Tian,Qibai Wu
The combination of polyaniline (PANI)-coated molybdenum disulfide (MoS 2 ) and activated carbon cloth (CC) is proposed on the basis of a facial hydrothermal and in situ polymerization . The flexible composite of CC/MoS 2 /PANI with a three-dimensional sandwich structure displays remarkable electrochemical performance, in terms of the highest specific capacitance of 972 F g −1 with a current density of 1 A g −1 , compared to CC/MoS 2 (425 F g −1 ) and CC/PANI (440 F g −1 ), good rate performance, low internal resistance, and more importantly, a long cycling life and notable electrochemical stability with retention of the initial specific capacitance at 87% after 5000 cycles (a large current density of 10 A g −1 ). The flexible self-assembled supercapacitors (FSCs) can display good electrochemical performance with the specific capacitance of 193.3 F g −1 , as well as outstanding mechanical flexibility. Furthermore, the performance of this flexible device was obviously decreased under various bending states. The present composite design concept opens a new path for the discovery of efficient electrode materials with three-dimensional sandwich structures.
研究领域:
材料科学
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电化学
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能量存储
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纳米材料
·
柔性电子学
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DOI
高影响因子
ANALYST
·
2023
·Vol. 148
·期 8
·1732-1742
·
IF 4.2
Chonghui Wei,Xuan Xie,Yue Mou,Shiqi Cheng,Jin Yang,Kaixin Xue,Kewei Yu,Xinru Lin,Chunfen Zhang,Yujie Zhao,Xingyu Luo,Yilin Wang
Dopamine (DA) plays an essential role in dopaminergic neuronal behavior and disease. However, current detection methods for discriminating the secretion of DA are hampered by the limitations of the requirement for bulky instrumentation and non-intuitive signals. Herein, we have controllably and proportionately integrated molybdenum disulfide (MoS2) with titanium dioxide (TiO2) to prepare MoS2@TiO2 nanocomposites (MoS2@TiO2 NCs) via a facile synthesis method. MoS2@TiO2 NCs with a certain reactant mass ratio have shown a significant enhancement in peroxidase-like activity with superiority of the nanocomposite structure compared to single MoS2 or natural enzyme. The method for catalyzing the decomposition of H2O2 by MoS2@TiO2 NCs and competition for hydroxyl radicals (˙OH) between the chromogenic agent and DA enable a sensitive, specific, and colorimetric DA analysis with a low detection limit of 0.194 μM and a wide linear detection range (0.8 to 100 μM). Because of the favorable detection performance, we were encouraged to explore and finally realize the visual detection of cellular DA secretion that is stimulated in a High-K+ neurocyte environment. Collectively, this method will provide a promising strategy for basic research in neuroscience with its portable, sensitive, and naked-eye detectable performance.
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DOI
PubMed
高影响因子
Small
·
2023
·Vol. 19
·期 26
·2208291
·
IF 13.3
Guangsheng Dong,Lixin Li,Kai Zhu,Jun Yan,Guiling Wang,Dianxue Cao
MoS 2 , as a classical 2D material, becomes a capable anode candidate for sodium-ion batteries. However, MoS 2 presents a disparate electrochemical performance in the ether-based and ester-based electrolyte with unclear mechanism. Herein, tiny MoS 2 nanosheets embedded in nitrogen/sulfur-codoped carbon (MoS 2 @NSC) networks are designed and fabricated through an uncomplicated solvothermal method. Thanks to the ether-based electrolyte, the MoS 2 @NSC shows a unique capacity growth in the original stage of cycling. But in the ester-based electrolyte, MoS 2 @NSC shows a usual capacity decay. The increasing capacity puts down to the gradual transformation from MoS 2 to MoS 3 with the structure reconstruction. Based on the above mechanism, MoS 2 @NSC demonstrates an excellent recyclability and the specific capacity keeps around 286 mAh g −1 at 5 A g −1 after 5000 cycles with an ultralow capacity fading rate of only 0.0034% per cycle. In addition, a MoS 2 @NSC‖Na 3 V 2 (PO 4 ) 3 full cell with ether-based electrolyte is assembled and demonstrates a capacity of 71 mAh g −1 , suggesting the potential application of MoS 2 @NSC. Here the electrochemical conversion mechanism of MoS 2 is revealed in the ether-based electrolyte and significance of the electrolyte design on the promoting Na ion storage behavior is highlighted.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Kunjie Wang,Yan Jing,Shuang Gao,Xianrong Liu,Bingxin Liu,Yongcheng Li,Peng Zhang,Benhua Xu
Implanting the octahedral phase (1 T) into the hexagonal phase (2H) of the molybdenum disulfide (MoS 2 ) matrix is considered one of the effective methods to enhance hydrogen evolution reaction (HER) performances of MoS 2 . In this paper, hybrid 1 T/2H MoS 2 nanosheets array was successfully grown on conductive carbon cloth (1 T/2H MoS 2 /CC) via facile hydrothermal method and the 1 T phase content in 1 T/2H MoS 2 is regulated to gradually increase from 0 % to 80 %. 1 T/2H MoS 2 /CC with 75 % 1 T phase content exhibits optimal HER performances. The DFT calculation results show that S atoms in 1 T/2H MoS 2 interface exhibit the lowest hydrogen adsorption Gibbs free energies (ΔG H* ) compared with other sites. The improvement of HER performances are primarily attributed to activating the in-plane interface regions of the hybrid 1 T/2H MoS 2 nanosheets. Furthermore, the relationship between 1 T MoS 2 content in 1 T/2H MoS 2 and catalytic activity was simulated by a mathematical model, which shows that the catalytic activity presents a trend of increasing and then decreasing with the increase of 1 T phase content.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Rui Li,Shuoyang Liang,Aikelaimu Aihemaiti,Shun Li,Zuotai Zhang
Piezocatalysis technology is emerging as a promising strategy for removing organic pollutants from water by harvesting mechanical energy from the surrounding environment. Herein, 2H-MoS 2 flower-like nanosheets with tunable S vacancies was synthesized via a hydrothermal method by adjusting pH of the precursor solution, Mo and S molar ratio, reaction time and temperature. The results showed that the presence of S vacancy leads to significantly enhanced piezoelectric response in the MoS 2 nanosheets, as confirmed by both theoretical calculation using first-principle based density functional theory and probe force microscopy (PFM) measurements. As a result, the as-obtained MoS 2 nanoflower piezocatalyst exhibited excellent degradation efficiency for Orange Ⅱ solution (removal rate > 95 % in 1 h) under ultrasonic vibration (40 kHz and 110 W). Importantly, we demonstrated for the first time that the piezocatalytic performance was tightly related with the water level in ultrasonic cleaner. The present work not only reports a simple and effective strategy for improving the piezocatalytic degradation activity of MoS 2 by introducing vacancy, but also provides new insights and deeper understanding on the underlying mechanism.
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高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Li Liu,Yang Gao,Qinghua Hu
Constructing heterogeneous interfaces on a nanoscale that can prominently improve the gas-sensing properties has been comprehensively reported. However, the effect of parallel heterostructures formed by unique synthetic means on nitrogen dioxide room-temperature sensing properties still needs to be clarified, which hinders the development of heterostructured hybrid materials in the field of gas sensing. In this study, large-sized MoS2 was parallel-wrapped on the surface of nanoscale Bi2S3 rods, and then, the Bi2S3/MoS2 nanocomposite aerogels were formed by freeze drying and calcination. The NO2 sensing performance of the hybrids and possible surface processes at room temperature have been investigated and deduced. The as-prepared nanocomposite aerogels (Bi2S3/MoS2-2) exhibited a larger specific surface area, a mass of active defect sites, and a higher charge density, thus possessing 15- and 20-times higher response than that of pristine MoS2 nanosheets and Bi2S3 nanorods, respectively. This study provides an efficient way to synthesize large-area parallel heterostructures between two bis-sulfides (Bi2S3 and MoS2), leading to excellent NO2 gas sensing performance.
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高影响因子
Nanoscale Advances
·
2022
·Vol. 5
·期 1
·133-141
·
IF 5.598
Shanshan Wei,Shiyong Li,Haolin Xiao,Feijun Zhao,Jianming Zhu,Zhencheng Chen,Liangli Cao
Gastric cancer (GC) is a common malignant tumour of the digestive tract with a high mortality rate worldwide. However, many patients delay treatment due to the avoidance of the costly and painful procedure of gastroscopy. Therefore, an early convenient screening method is essential to improve the survival rate of GC patients. To address this issue, we constructed an electrochemical immunosensor supported by rhombohedral Cu3Pt and MoS2 nanoflowers (MoS2 NFs) for rapid, painless and quantitative detection of the GC biomarker in vitro. Here, pepsinogen I was employed as a model protein biomarker to analyse the performance of the immunosensor. The rhombohedral dodecahedral Cu3Pt nanoparticles decorated with MoS2-NFs were further functionalized; this allowed the constructed sensor to possess more nano- or micro-structures, thereby improving the detection sensitivity. In specific applications, the corresponding bioactive molecules can be flexibly captured. Under optimal conditions, the immunoassay showed a wide linear range from 500 pg mL−1 to 400 ng mL−1 and a low detection limit of 167 pg mL−1 (S/N = 3). This covers the critical value of 70 ng mL−1, and the results obtained from the analysis of human serum samples were on par with those from the enzyme immunoassay, suggesting significant potential for this new method in daily diagnosis.
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PubMed
高影响因子
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