Journal of the American Chemical Society
·
2025
·
IF 15.6
Ting Gao,Jie Gu,Changheng Yang,Rui Wang,Chan Wang,Pengfei Zhang,Jiatong Li,Xiaoyan Zheng,Yunmiao Fan,Puheng Yang,Xiufu Hua,Junfeng Hui,Huigang Zhang
Hydrogen is a promising clean energy carrier, yet the high energy demand of water electrolysis limits its widespread adoption. Catalysis is crucial to enhance the efficiency of hydrogen production and lower energy costs. However, conventional catalyst design guided by the d-band theory faces inconsistencies in predicting adsorption behavior, and the oxygen evolution reaction (OER) remains a major efficiency bottleneck. To address these challenges, we developed a strain-engineered Rh single-atom catalyst anchored on curved WS2 supported by carbon nanotubes (RhSA/WS2@CNT) to modulate the electronic structure. The resultant catalyst achieves an ultralow overpotential of 17.4 mV at 10 mA cm–2 for the hydrogen evolution reaction (HER) and a mass activity ∼65 times higher than that of commercial Pt/C. Mechanistic analysis reveals that the H* adsorption trend contradicts d-band theory predictions but is explained by orbital symmetry adaptation, where the strain-modulated dxz orbital plays a major role in governing adsorption energetics. Beyond catalyst design, the HER catalyst was coupled with a photocatalytic iodide oxidation reaction (IOR) to replace the OER and reduce the water-splitting voltage to 0.7 V. This study not only introduces a strain-engineering strategy to optimize single-atom catalysts but also demonstrates a coupled electro-photo system that enhances energy efficiency, offering an alternative approach for sustainable hydrogen production.
研究领域:
材料科学
·
催化化学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2025
·
IF 12.1
Yue Zhang,Mingzi Sun,Weikang Zheng,Bintong Yang,Ting Ying,Liang Mei,Ruixin Yan,Honglu Hu,Guozhao Fang,Dongliang Chao,Bolong Huang,Zhong-Shuai Wu,Zhiyuan Zeng
The rising need for efficient energy storage has sparked interest in high-performance supercapacitors. However, their low energy density is a significant drawback. 2D transition metal dichalcogenides (TMDs) like molybdenum disulfide (MoS 2 ) and tungsten disulfide (WS 2 ) are promising for electrodes due to their adjustable surface chemistry and electronic properties. However, MoS 2 and WS 2 are still facing challenges, including phase instability, limited interlayer accessibility, and poor conductivity in ambient conditions. Here, a rapid and controllable strategy is presented for the covalent functionalization of MoS 2 and WS 2 nanosheets via a “click”-type Michael addition reaction with maleimide derivatives. This approach increases interlayer spacing by more than 1.5 times and enhances electrical conductivity by over threefold, thereby exceptionally improving charge transport and ion diffusion. The functionalized membranes deliver outstanding electrochemical performance, including a volumetric capacitance of up to 164 F cm −3 and capacitance retention exceeding 92% after 10 000 cycles, which are 30-fold increase when comparing with their pristine counterparts. This work offers a robust platform for engineering high-performance TMD-based electrodes and provides a viable route toward next-generation high-performance flexible energy storage devices.
研究领域:
材料科学
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纳米科技
·
电化学
·
能源存储
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表面化学
·
功能材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Xiaohui Liu,Xiaofeng Li,Manli An,Yanfang Gao,Zhenzhu Cao,Jinrong Liu
Due to the unique characteristics like large specific surface area of Transition Metal Dichalcogenides (TMDs) and its well-defined hollow Metal-Organic Framework (MOF), it is widely used in dye-sensitized solar cells (DSSCs), oxygen reduction (ORR) and oxygen evolution reaction(OER). Herein, we prepare N-doped C hollow metal organic frame structure materials , which are used as a template, WS 2 nanocrystals are grown and encapsulated in MOF with interfacial W–N coupling centers. During the pyrolysis, after carbonizing, ZIF-67 becomes Co, N-doped C materials, and the growth of WS 2 is effectively suppressed, creating multi-functional groups W–N/C@Co 9 S 8 @WS 2 materials. The synthesized material is employed as a counter electrode (CE) for dye-sensitized solar cells, its high power conversion efficiency (PCE) (7.38%) based DSSC under AM 1.5G irradiation was much more than that of Pt (7.06%). Such excellent electrocatalytic performance was resulted from the unique frame pore structure , the synergistic effect of WS 2 , Co 9 S 8 and W–N multi-functional groups. Besides, W–N/C-4@Co 9 S 8 @WS 2 shows E 1/2 ≈0.84 V and a little Tafel slope of 44 mVdec −1 when employed as electrocatalysts for ORR and potential ≈ 1.79 V to achieve the current density of 10 mA cm −2 , which are lower than that of Pt/C ≈ 1.91 V catalysts in 0.1 M KOH.
研究领域:
材料科学
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能源化学
·
电催化
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Weihuang Yang,Hua Li,Jiajun Chen,Jun Yin,Jing Li,Yaping Wu,Bingjie Mo,Ting Wu,Baofan Sun,Zhiming Wu,Hao Wang,Linxi Dong,Gaofeng Wang
Monolayer transition metal dichalcogenides (TMDs) usually have weak optical emission due to the poor light absorption as being atomically thin. Enhancing their optical properties by surface plasmon resonance is attractive for applying atomically thin TMDs in optoelectronic and photonic devices. Here, Ag/WS 2 hybrid structure was fabricated by transferring monolayer WS 2 grown via chemical vapor deposition (CVD) onto optimized periodic Ag nanoprism array with well-matched resonance by controlling the mask geometry and etching time of polystyrene (PS) nanospheres. Significant enhanced photoluminescence (PL) emission and Raman scattering were successfully achieved. Especially, the higher enhancement is realized for neutral excitons of monolayer WS 2 . Theoretical calculations reveal that the plasmonic enhancement mainly results from the highly enhanced local electric field and the charge transfer. This work explores the feasibility of exciton emission and Raman scattering enhancement for TMDs with plasmonic nanostructures fabricated by low-cost and easily-manipulated nanosphere lithography (NSL), which paves a way towards the applications of plasmon-enhanced TMD sensors, emitters, and photodetectors.
研究领域:
纳米光子学
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等离激元学
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二维材料
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光电子学
·
材料科学
✓ 已验证
DOI
高影响因子
MATERIALS & DESIGN
·
2026
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IF 8.2
Xiaoli Li,Fengtian Shi,Yao Lu,Guangshuo Wang,Dong Li,Mengtian Tan
Achieving a balance between high yield stress and superb sedimentation stability remains a great challenge for magnetorheological (MR) fluids. Developing nanocomposites by integrating magnetic particles with low-dimensional nanomaterials is an effective strategy to address this issue. In this study, Fe 3 O 4 /WS 2 nanocomposites were designed and synthesized involving the hydrothermal growth of Fe 3 O 4 nanoparticles onto the exfoliated WS 2 nanosheets. A detailed characterization was conducted using a range of analytical tools such as SEM, XRD, Raman, XPS and VSM to confirm the successful construction of Fe 3 O 4 /WS 2 nanocomposites. The MR fluid was subsequently prepared by dispersing the resulting Fe 3 O 4 /WS 2 nanocomposites into silicone oil. The MR properties were measured under different magnetic field intensities in both steady shear and oscillatory shear modes. The rheological parameters including shear viscosity, shear stress, storage modulus and loss modulus demonstrated a strong dependence on the applied magnetic field intensity. The mechanism involved the formation of more extensive and robust field-induced chain-like structures with increasing field strength. Finally, the sedimentation stability was quantitatively monitored over time and it was revealed the Fe 3 O 4 /WS 2 -based MR fluid exhibited possessed significantly improved sedimentation stability relative to the conventional carbonyl iron particles.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 12
·127518
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IF 4.386
Ning Dai,Guohua Shi,Tingting Li,Nan Liu,Zhongkai Xu,Zhe Chen,Xiaohong Sun,Jiefang Sun,Ruisong Guo,Chunming Zheng
Dopamine is an important neurotransmitter for organisms and affects their function, so monitoring and detecting dopamine levels are essential. Sensitivity and selectivity of electrochemical sensors for the detection of dopamine usually rely on hybrid nanocomposites. In this context, we designed a micro-regionally restricted hybrid nanocomposite by modulating the micro-nano structure. Using functional groups on nitrogen-doped reduced graphene oxide (N-rGO) to restrict the random growth of tungsten disulfide nanosheets, we obtained a 2D layered material with bidirectional structural support to achieve high specific surface and high activity for application in robust and novel dopamine electrochemical sensors. A facile electrochemical sensor for dopamine detection was fabricated by modifying a screen-printed carbon electrode with the nanocomposite. The sensor exhibits excellent performance of dopamine detection in the wide range of 1 μmol l−1–100 μmol l−1 with a detection limit of 0.2 μmol l−1 and a high sensitivity of 0.56 μA μmol−1 l−1. The optimized sensor shows a good selectivity, satisfactory long-term stability and reproducibility towards DA and a separation of peak potential of 142 mV with uric acid. In addition, the prepared sensor provides favorable recovery in human serum and artificial cerebrospinal solution (aSCF), indicating great potentials in electrochemical detection and biological sensing applications.
研究领域:
生物医学工程
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材料科学
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神经科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Chao Ouyang,Yunxiang Chen,Ziyu Qin,Dawen Zeng,Jian Zhang,Hao Wang,Changsheng Xie
As a typical two-dimensional (2D) layered transition metal dichalcogenides (TMDs), tungsten disulfide (WS 2 ) has been considered as a promising sensing material for room-temperature NH 3 detection. However, the bulk WS 2 -based room-temperature NH 3 sensors can hardly recover to its initial state after turning off gas . Although the recovery rate of bulk WS 2 was accelerated by thinning method, the response of few- or monolayer WS 2 nanosheets (NSs) to NH 3 was sharply decreased. Here, in premise of keeping fast recovery rate, few- or monolayer WS 2 NSs modified with Pt quantum dots (QDs) were prepared for room-temperature NH 3 detection, which exhibited significantly enhanced sensing properties with fast recovery speeds. Especially, the response of nanocomposite to 250 ppm NH 3 is nearly 10 times than that of WS 2 NSs, which could be attributed to the significantly decreased initial conductivity caused by electrons flowing from higher Fermi level of Pt QDs to that of WS 2 NSs and the higher catalytic activity. Furthermore, the Pt S bonds confirmed by XPS results could benefit electrons transfer between the interface. We hope that the 0D/2D heterostructure system in this work could provide a direction to improve sensing properties of 2D TMDs-based room-temperature sensors.
研究领域:
材料科学
·
传感技术
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Yi Xia,Lei Xu,Sufang He,Liexing Zhou,Mingjun Wang,Jing Wang,Sridhar Komarneni
2D Transition metal dichalcogenide (TMDs) has been recognized as a potential candidate for constructing wearable and safe room temperature gas sensor. Especially, the heterostructures of TMDs/ metal oxide semiconductors (MOS) have been proved to be potential candidates as NO 2 sensors at room temperature. However, the response/recovery rate and reversibility of the sensors is still not satisfactory due to the inefficient charge transfer on TMDs/MOS hetero-interface. In this study, SnO 2 quantum dots (QDs) were simply decorated on the surface of few or single layer WS 2 nanosheets to form 2D/0D heterostructures via a facile room temperature aqueous solution process and self-assembly method. The 2D/0D WS 2 /SnO 2 heterostructure-based optoelectronic gas sensor showed fast response/recovery rates and full reversibility to NO 2 at room temperature with enhanced response. The remarkable improvement in NO 2 sensing was because of the efficient interfacial charge separation rendered by 2D/0D heterostructures under ultraviolet illumination. Therefore, this study points out a potential strategy for the design of light-enhanced gas sensing materials.
研究领域:
材料科学
·
纳米科技
·
传感器技术
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半导体物理
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环境监测
·
光电子学
✓ 已验证
DOI
高影响因子
Small
·
2016
·Vol. 12
·期 48
·6703-6713
·
IF 8.315
Long Pan,Yi-Tao Liu,Xu-Ming Xie,Xiong-Ying Ye
To obtain 2D materials with large quantity, low cost, and little pollution, liquid-phase exfoliation of their bulk form in water is a particularly fascinating concept. However, the current strategies for water-borne exfoliation exclusively employ stabilizers, such as surfactants, polymers, or inorganic salts, to minimize the extremely high surface energy of these nanosheets and stabilize them by steric repulsion. It is worth noting, however, that the remaining impurities inevitably bring about adverse effects to the ultimate performances of 2D materials. Here, a facile and green route to large-scale production of impurity-free aqueous solutions of WS 2 nanosheets is reported by direct exfoliation in water. Crucial parameters such as initial concentration, sonication time, centrifugation speed, and centrifugation time are systematically evaluated to screen out an optimized condition for scaling up. Statistics based on morphological characterization prove that substantial fraction (66%) of the obtained WS 2 nanosheets are one to five layers. X-ray diffraction and Raman characterizations reveal a high quality with few, if any, structural distortions. The water-borne exfoliation route opens up new opportunities for easy, clean processing of WS 2 -based film devices that may shine in the fields of, e.g., energy storage and functional nanocomposites owing to their excellent electrochemical, mechanical, and thermal properties.
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Gaohong Liu,Xuanli Zheng,Haiyang Liu,Jun Yin,Congming Ke,Weihuang Yang,Yaping Wu,Zhiming Wu,Xu Li,Chunmiao Zhang,Junyong Kang
Transition-metal dichalcogenides with intrinsic spin-valley degree of freedom have enabled great potentials for valleytronic and optoelectronic applications. However, the degree of valley polarization is usually low under nonresonant excitation at room temperature due to the phonon-assisted intervalley scattering. Here, achiral and chiral Au arrays are designed to enhance the optical response and valley polarization in monolayer and bilayer WS2. A considerable band edge emission with 7 times increment is realized under the resonant coupling with Au dimer-prism arrays. Valley polarization enhancement is quantitatively predicted by the inherent mechanisms from elevated electromagnetic field intensity and radiation efficiency and further realized in polarized photoluminescence. A tunable valley polarization up to 30.0% is achieved in bilayer WS2 under a nonresonant excitation at room temperature. All of these results provide a promising route toward the development of room-temperature valley-dependent optoelectronic devices.
研究领域:
光电子学
·
谷电子学
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纳米光子学
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等离激元学
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凝聚态物理
·
二维材料
✓ 已验证
DOI
高影响因子
ChemPlusChem
·
2018
·Vol. 83
·期 11
·1052-1056
·
IF 3.205
Wenxu Yin,Xiaoyu Zhang,Xue Bai,Dingke Xue,Xingwei Zhuang,Hongwei Song,William W. Yu
Graphical S-TOP and go ! A low-cost, one-pot synthesis of WS 2 quantum dots was devised that relies on activated elemental sulfur (S-TOP, S dissolved in tri-n-octylphosphine) instead of an organic sulfur source. Light-emitting devices prepared from this material display a high color rendering index of 93 (see figure). We report a facile and low-cost synthesis of WS 2 quantum dots with bright broad-band emission, which are suitable for lighting applications. The thus fabricated WS 2 light-emitting diodes (LEDs) exhibit voltage independent electroluminescence spectra, and the optimized white LEDs generate a high color rendering index of 93.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Jing Wang,Fuge Chai,Mengya Fan,Yongping Dong
The present work focuses on developing a highly sensitive ECL sensor for Pb 2+ detection based on WS 2 quantum dots (QDs). A top-down sonication-assisted liquid-phase exfoliation method was employed to synthesize WS 2 QDs which were characterized by TEM, XPS, Raman spectroscopy and electrochemistry. It was found that WS 2 QDs could not only generate mild cathodic ECL itself but also significantly promote the cathodic ECL of lucigenin. The electrochemical results suggested that WS 2 QDs could effectively accelerate the reduction process of dissolved oxygen and lucigenin, thereby greatly amplifying the ECL intensity. The specific interaction between Pb 2+ and WS 2 QDs could significantly decrease ECL signal due to the depletion of WS 2 QDs, based on which an ECL sensor for detecting Pb 2+ was developed. Under the optimal condition, a good linear relationship between the inhibited ECL signal and the logarithm of Pb 2+ concentration was obtained in the range from 1 nM to 50 μM, with a low detection limit of 10.4 pM. Moreover, the fabricated sensor exhibited high sensitivity and excellent selectivity, and could be used for the sensitive detection of Pb 2+ in real samples.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）