Materials Horizons
·
2017
·Vol. 4
·期 2
·274-280
·
IF 10.706
Ke Zhang,Mingzeng Peng,Wei Wu,Junmeng Guo,Guoyun Gao,Yudong Liu,Jinzong Kou,Rongmei Wen,Ying Lei,Aifang Yu,Yang Zhang,Junyi Zhai,Zhong Lin Wang
Flexible functional devices based on two dimensional (2D) materials are extremely suitable for malleable, portable and sustainable applications, such as health monitoring, electronic skin and optoelectronics. In this work, we developed a flexible photodetector based on a p-CuO/n-MoS2 heterojunction with an enhancement in photocurrent and detection sensitivity. Because of the non-centrosymmetric structure in monolayer MoS2, the piezo-potential induced by applied strain adjusts the band structure at the heterojunction interface and broadens the depletion region based on the piezo-phototronic effect. The border depletion can be discreetly used to improve the photo-generated carrier separation and transport to enhance photoresponse performance. When illuminated by a 532 nm laser, the photocurrent of the heterojunction can be enhanced 27 times under a tensile strain of 0.65% compared to strain free conditions and the detection sensitivity can reach up to 3.27 × 108 Jones. As a result, our research provides a new strategy for novel design and performance optimization of 2D material heterostructures in the application of optoelectronics.
研究领域:
材料科学
·
纳米科技
·
光电子学
·
凝聚态物理
·
功能器件
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DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2019
·Vol. 25
·期 70
·16054-16062
·
IF 5.16
Raheela Naz,Qinglei Liu,Waseem Abbas,Muhammad Imtiaz,Imran Zada,Javed Ahmad,Tengfei Li,Jiajun Gu
A new ternary composite of 1T-molybdenum disulfide, hexagonal tungsten trioxide, and reduced graphene oxide (M-W-rGO) is synthesized by using a one-pot hydrothermal process. The synergetic effect of 1T-MoS 2 and hexa-WO 3 nanoflowers improves the electrochemical performance for supercapacitors by inducing additional active sites and hexagonal tunnels, respectively, which lead to high storage capacity and easy transfer of electrolyte ions. The ternary M-W-rGO composite has a high specific capacitance of 836 F g −1 at 1 A g −1 , which is nearly twice that of binary composites of M-rGO and W-rGO with high capacitance retention of 86.35 % after 3000 cycles at a high current density of 5 A g −1 . This study provides a new ternary composite that can be used as an electrode material for high-performance supercapacitors. Graphical The flower of supercapacitors : 1T-MoS 2 and hexa-WO 3 nanoflowers are grown on a 3D network of reduced graphene oxide by using a one-pot hydrothermal process. The hexagonal tunnel structure of WO 3 and 1T conducting phase of MoS 2 provide additional active sites, high storage capacity, and easy electronic transportation for high-performance supercapacitor applications.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
功能材料
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DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Wenhui Zeng,Xuekun Pan,Shuncai Li,Yongliang Zhuang,Hui Xu,Hongyu Pan,Shuquan Huang
Hydrogen peroxide (H 2 O 2 ), a common food disinfectant, poses health threats through residual contamination, necessitating a sensitive detection method. In this work, a molybdenum sulfide (MoS x ) film was in situ grown on carbon cloth (CC) via electrodeposition, followed by a post-annealing treatment to convert it into MoS 2 (MoS 2 /CC). The fabricated non-enzymatic H 2 O 2 electrochemical sensor demonstrated a wide linear range (1 μM–20 mM) with a detection limit of 1.1 μM. Additionally, the sensor was applied to detect H 2 O 2 in food samples, achieving recoveries of 98.02%–111.85% and RSD < 7.09%. Mechanistic investigation with computational methods revealed that the high activity of MoS 2 arises from the presence of active sites on its surface that interact with H 2 O 2 in a moderately to strongly favorable manner. This study theoretically elucidates the structure-activity relationship between the surface characteristics of MoS 2 and its adsorption behavior toward H 2 O 2 , offering a solid theoretical framework for the optimization of MoS 2 -based sensors.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Zimeng Zhao,Hongbo Yan,Haoran Qiao,Kerun Hua,Wenxiang Guo,Wenbin Li,Jiahao He,Jiugang Li
Solar interfacial evaporation presents a sustainable solution to global freshwater scarcity. However, conventional evaporator designs are fundamentally limited by an inherent trade-off between thermal localization and water transport, which severely impedes overall performance. To transcend this limitation, we developed a durable three-dimensional evaporator featuring a hierarchically engineered conical pore architecture (denoted MoS 2 /TA-NPF). This architecture was realized by functionalizing a nonwoven needled cotton fabric (NPF) with molybdenum disulfide (MoS 2 ) nanosheets, where tannic acid (TA) served as a versatile adhesive platform to ensure homogeneous nanosheet loading, broadband solar absorption, and robust environmental stability. The functionalized fibrous layers were then configured into a conical structure with a meticulously controlled pore size gradient-precisely tapered from 5 mm at the top to 2 mm at the bottom. This deliberate structural design plays a dual role: it amplifies light harvesting through pronounced multi-scattering effects, while simultaneously enabling synergistic modulation of the thermal field and capillary-driven water supply. Consequently, the evaporator achieved a superior evaporation rate of 2.21 kg·m −2 ·h −1 under 1 kW·m −2 solar irradiation. Moreover, it exhibited exceptional long-term operational stability under high-salinity conditions, with no discernible performance degradation. By seamlessly integrating molecular-scale interface engineering with macroscopic architectural design, this work establishes a novel and robust strategy for developing high-performance, fouling-resistant solar evaporators, thereby advancing their practical deployment in seawater desalination and high-salinity wastewater treatment.
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高影响因子
Catalysis Science & Technology
·
2021
·Vol. 11
·期 24
·7914-7921
·
IF 6.119
Qiuzhong Li,Lin Huang,Wenxin Dai,Zizhong Zhang
The 1T/2H heterophase junction MoS2 2D nanolayer for assembly into microspheres were fabricated through a simple one-step hydrothermal synthesis. These unique junction structure MoS2 microspheres facilitate the separation of the electron–hole between different phases for forming the built-in electric field in the nanolayer. The content of 1T/2H heterophase junctions could be effectively regulated by simple changing the molar ratio of the Mo/S source in the synthesis processes. The prepared MoS2 microspheres as a photocatalyst enable the effective hydrogen production from water. The hydrogen production activity of the photocatalyst is dependent on the content of the heterophase junctions. The hydrogen production rate was the highest up to 22.4 μmol h−1 on the optimal sample MS (1 : 2).
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高影响因子
CHINESE CHEMICAL LETTERS
·
2018
·
IF 2.631
Feng Chen,Long Wu,Zeping Zhou,Jiajun Ju,Zhengping Zhao,Mingqiang Zhong,Tairong Kuang
Lignin is the most abundant and important macromolecule in organic matter and its yield is second only to cellulose. Lignin is abundant in source, low in price, and has a large number of active groups such as methoxy group and carboxyl group, so it has great utilization value. We used lignin as a carbon source to prepare porous carbon nanosphere (PCN) materials, and in-situ synthesized the MoS 2 on its surface. The high specific surface area (∼462.8 m 2 /g), large pore volume and good electron conductivity of the porous carbon scaffold facilitated the reversible electro-chemical reaction of S towards metallic Li, and thus the nano-hybrid showed a high specific energy and excellent cycle stability which still remained 520 mAh/g after 50 cycles.
研究领域:
材料科学
·
能源化学
·
纳米科技
·
电化学
·
功能材料
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DOI
高影响因子
Journal of Central South University
·
2023
·Vol. 30
·期 10
·3187-3196
·
IF 4.4
Li Cheng,Xin Rui-feng,Jiao Chen-yin,Zhang Ze-juan,Qin Jia-ze,Chu Wen-long,Zhou Xi-long,Li Zi-an,Wang Zeng-hui,Xia Juan,Zhou Yu
Twisted bilayer transition metal dichalcogenides including MoS 2 have attracted great interest due to their unique Moiré superlattice induced electronic flat bands. High-quality twisted bilayer TMDs with uniform Moiré potentials are essential for the discovery of strong correlation effects, unconventional superconductivity, and quantum anomalous Hall effect. However, the synthesis of large-area high-quality twisted bilayer MoS 2 (tBMoS 2 ) using chemical vapor deposition (CVD) is still absent, which needs to overcome the formation energy barrier for nonstable twist bilayers. Here, we demonstrate a novel CVD approach with local airflow perturbation for growing tBMoS 2 by a heterosite nucleation strategy, which enables the nucleation of the second layer at the different site from the first layer nucleation site with arbitrary twist angles. Furthermore, the accurate determination of interlayer twist angles in tBMoS 2 is crucial for studying structure-physical properties relationship. We quantitatively compare the measurement accuracy between a geometrical method and TEM selected area electron diffractions (SAED), in which the measured angles from TEM-SAED shows much smaller angle errors. Finally, Raman spectra show the interlayer coupling can be tuned by the twist angles. Our study opens an avenue for the controllable growth of tBMoS 2 for both fundamental research and practical applications.
研究领域:
材料科学
·
纳米结构
·
二维材料
·
表面科学
·
凝聚态物理
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DOI
高影响因子
Inorganic Chemistry Frontiers
·
2018
·Vol. 5
·期 9
·2092-2099
·
IF 5.106
Jinxue Guo,Ke Zhang,Yanfang Sun,Yingxia Zong,Ziyang Guo,Qingyun Liu,Xiao Zhang,Yongyao Xia
Layered MoS2 has been recognized as a promising low-cost alternative to Pt-based electrocatalysts towards the hydrogen evolution reaction (HER). Intensive interest has been mainly focused on designing MoS2 nanostructures with large amounts of active edge sites and fast charge transfer. Here we report the synthesis of vanadium and nitrogen co-doped MoS2 on reduced graphene oxide with new defect sites on the basal/edge planes and expanded interlayer spacing, which shows remarkable catalytic merits with an extremely low overpotential of 68 mV at 10 mA cm−2 and a Tafel slope of 41 mV dec−1. Its performance is superior to most current MoS2 electrocatalysts. In addition to the charge transfer benefits of the RGO substrate, the vanadium and nitrogen dopants trigger defect sites on the basal/edge planes, and an optimized electronic structure and expanded interlayer distance are also responsible for the enhancement in catalysis. This contribution may offer a potential way to design advanced MoS2 catalysts by modulating the defect sites and interlayer distance for efficient electrochemical water splitting.
研究领域:
材料科学
·
电化学
·
纳米催化
·
能源转换
·
表面科学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 22
·11435-11441
·
IF 11.301
Peng Liu,Jianyue Yan,Jianxin Mao,Jiawen Li,Dongxue Liang,Wenbo Song
The alkaline hydrogen evolution reaction (HER) is an extremely important reaction in energy conversion and electrolytic industries. Pristine MoS2 exhibits poor alkaline HER activity due to weak water adsorption and dissociation. Precisely manipulating active water dissociation components to form a functional interface with MoS2 would be an effective strategy. Herein, in-plane intergrowth CoS2/MoS2 ultrathin nanosheets have been achieved via a one-step pyrolytic sulfurization of a small-sized Co/Mo-MOF precursor. The in-plane intergrowth structure produced abundant interfaces and modulated the interfacial electronic structure, demonstrating an accelerated water dissociation process. Ultralow overpotentials at both onset (16 mV) and 10 mA cm−2 (75 mV) have been obtained, which surpass those of most top-rated MoS2-based materials and are even proximate to those of commercial Pt/C (0 mV at onset and 60 mV at 10 mA cm−2, respectively). Under a large current density of 400 mA cm−2, the intergrowth nanosheet exhibited long-term stability, showing potential for applications in alkaline water splitting devices.
研究领域:
材料科学
·
能源转换技术
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·Vol. 48
·期 71
·27557-27567
·
IF 7.2
Xiaobing Xu,Heng Ma,Wei Xu,Xueming Liu,Haifeng Chu,Lei Zhang,Xinglong Wu
Heterostructure and phase engineering are effective method to tune the electronic structure of MoS 2 , which can activate and boost its intrinsic catalytic activity. Herein, the theoretical calculations reveal that the free energy of H∗ adsorption (ΔG H∗ ) for Mo 2 C (−0.65 eV) is lower than MoS 2 (2.05 eV), which is favorable for hydrogen adsorption. Inspired by the theoretical predictions, we develop a facile strategy to prepare nanostructured Mo 2 C/MoS 2 dispersed on reduced graphene oxide (rGO) via a hydrothermal preparation and carburization reaction. Since the Mo 2 C/MoS 2 -rGO nanostructures with great deal of both MoS 2 and Mo 2 C edges by heterostructure and phase engineering, which can induce massive active sites for HER on the surface of rGO, the intimate interfacial coupling effect between Mo 2 C and MoS 2 can effectively improve the charge transfer rate. The Mo 2 C/MoS 2 -rGO catalyst exhibits exceptional HER properties, delivering a high turnover frequency (TOF) of 0.209 s −1 at an overpotential of 200 mV in 0.1 M KOH. This work may open a new window for designing NPM electrocatalysts with highly efficient HER property based on earth-abundant materials.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能量转换
·
催化
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DOI
高影响因子
DESALINATION
·
2026
·
IF 9.9
Yingyang Bu,Ran Han,Tianxu Feng,Wenxuan Wang,Guangze Nie
Efficient decontamination of toxic mercury from water remains a critical challenge. MoS 2 nanoadsorbents exhibit significant advantages for mercury capture due to the strong soft-soft interactions between Hg(II) and sulfur. However, conventional MoS 2 nanosheets or MoS 2 -based nanocomposites are often hindered by practical limitations, including difficulty in separation and recovery, pore blockage, nanoparticle leaching, and high pressure drop in flow-through systems. Herein, we report a millimeter-sized nanocomposite (MoS 2 @PDA@CER) fabricated by coating MoS 2 nanosheets onto a cation exchange resin via a polydopamine (PDA) adhesive layer. The millimeter-scale architecture enables easy separation and superior hydraulics for flow-through operation. MoS 2 @PDA@CER exhibits broad pH applicability (1–8), ultra-high adsorption capacity (1168.18 mg/g at pH 5), rapid adsorption kinetics (equilibrium within 1 h), and exceptional selectivity toward Hg(II). These outstanding properties are attributed to the synergy between the unique millimeter-sized structure of the resin support and the strong affinity of MoS 2 for Hg(II). Furthermore, the nanocomposite demonstrates deep purification capability, effectively treating various trace mercury-contaminated waters to meet drinking water standards. It also shows excellent reusability, with no significant loss in adsorption capacity after 10 cycles. In fixed-bed column tests, MoS 2 @PDA@CER successfully treated ∼3000 BV of Hg(II)-spiked wastewater, with effluent complying with the Chinese integrated wastewater discharge standard (50 μg/L); notably, the first 900 BV even met the drinking water standard (1 μg/L). All the results indicate that MoS 2 @PDA@CER is a scalable and efficient adsorbent for the remediation of mercury-contaminated wastewater.
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高影响因子
Advanced Science
·
2023
·Vol. 10
·期 15
·2206494
·
IF 15.1
Shaowei Xie,Xiaochen Fei,Jiayi Wang,Yi-Cheng Zhu,Jiazhou Liu,Xinxing Du,Xuesong Liu,Liang Dong,Yinjie Zhu,Jiahua Pan,Baijun Dong,Jianjun Sha,Yu Luo,Wenshe Sun,Wei Xue
High-throughput metabolic fingerprinting has been deemed one of the most promising strategies for addressing the high false positive rate of prostate cancer (PCa) diagnosis in the prostate-specific antigen (PSA) gray zone. However, the current metabolic fingerprinting remains challenging in achieving high-precision metabolite detection in complex biological samples (e.g., serum and urine). Herein, a novel self-assembly MoS 2 /MXene heterostructure nanocomposite with a tailored doping ratio of 10% is presented as a matrix for laser desorption ionization mass spectrometry analysis in clinical biosamples. Notably, owing to the two-dimensional architecture and doping effect, MoS 2 /MXene demonstrates favorable laser desorption ionization performance with low adsorption energy, which is evidenced by efficient urinary metabolic fingerprinting with an enhanced area under curve (AUC) diagnosis capability of 0.959 relative to that of serum metabolic fingerprinting (AUC = 0.902) for the diagnosis of PCa in the PSA gray zone. Thus, this MoS 2 /MXene heterostructure is anticipated to offer a novel strategy to precisely and noninvasively diagnose PCa in the PSA gray zone.
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PubMed
高影响因子
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