ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Kun Zhao,Jiahao Zhou,Chaohui Zhang,Weiqi Qian,Junhui Wu,Yaping Liu,Li Qiang,Ming Zhong,Cheng Meng,Yong Wang,Kewei Zhang
To address the low charge capture capacity and poor wear resistance of triboelectric materials, lithium-ion intercalation is employed to synthesize monolayer–multilayer hybrid MoS 2 nanosheets. Density functional theory calculations elucidate layer-dependent charge transfer and band structure modulation in the exfoliated MoS 2 , providing theoretical support for enhanced surface charge capture. By leveraging MoS 2 ’s exceptional charge-trapping capability and tribological advantages, a MoS 2 /polytetrafluoroethylene (PTFE) composite film exhibiting high negative triboelectric polarity and ultralow friction characteristics is developed. The optimized 2.8 wt.% film exhibits a negative surface potential of −0.31 kV and a coefficient of friction (COF) of 0.07, representing a 416.7% increase in the absolute value of negative surface potential and a 65.5% reduction in COF compared to pure PTFE. The wind-driven triboelectric nanogenerator (TENG) delivers 452 V, 58 µA, and 6.98 mW at 19.5 m s −1 , maintaining ≈95% of its initial open-circuit voltage over 21.6 million cycles. A self-powered heart rate monitor belt and respiratory sensor are fabricated, highlighting its potential for physiological monitoring. This work provides a strategy for triboelectric material design, offering a reference for developing high-performance and ultra-durable TENGs.
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产品关联
DOI
高影响因子
DESALINATION
·
2020
·
IF 7.098
Jing Ma,Xiaodong Tang,Yi He,Yi Fan,Jingyu Chen,HaoYu
Robust stable filtration membranes based on graphene oxide (GO), with fast and efficient capacity to separate dyes or salts from water, are highly necessary to maintain fresh water resources, but still a challenge to achieve. Herein, an easy and effective route has been demonstrated to address this challenge by intercalating GO with molybdenum disulfide (MoS 2 ) nanosheets . Prompted by the strong van der Waals interactions between GO and MoS 2 and the weak interaction between MoS 2 and H 2 O molecules, the interlayer stabilizing force within the MoS 2 /GO filtration membrane has been greatly enhanced. Therefore, robust stability against harsh conditions (pH values from 3 to 11) without any additional cross-linkers can be realized. Additionally, compared with pure GO membrane, our MoS 2 /GO membrane exhibits both enhanced pure water flux (from 8.83 L·m − 2 ·h − 1 to 48.27 L·m − 2 ·h − 1 ) and improved salts removal capacity (i.e., K 3 Fe(CN) 6 (from 54.32% to 96.85%)), without deteriorating its dyes rejection ratio (i.e., methylene blue (more than 99.50%)). Meanwhile, the membrane also has outstanding cycling stability. For the ubiquitous van der Waals forces between two-dimensional materials, our method can be easily extended to construct other stable and highly efficient filtration membranes.
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DOI
高影响因子
TALANTA
·
2018
·
IF 4.244
Xiaorong Gan,Huimin Zhao,Kwok-Yin Wong,Dang Yuan Lei,Yaobin Zhang,Xie Quan
Surface functionalization is an effective strategy in the precise control of electronic surface states of two-dimensional materials for promoting their applications. In this study, based on the strong coordination interaction between the transition-metal centers and N atoms, the surface functionalization of few-layer MoS 2 nanosheets was successfully prepared by liquid phase exfoliation method in N, N-dimethylformamide (DMF), 1-methyl-2-pyrrolidinone, and formamide . The cytotoxicity of surface-functionalized MoS 2 nanosheets was for the first time evaluated by the methylthiazolyldiphenyl-tetrazoliumbromide assays. An electrochemical sensor was constructed based on glass carbon electrode (GCE) modified by MoS 2 nanosheets obtained in DMF, which exhibits relatively higher sensitivity to Cd 2+ detection and lower cytotoxicity against MCF-7 cells. The mechanisms of surface functionalization and selectively detecting Cd 2+ were investigated by density functional theory calculations together with various spectroscopic measurements. It was found that surface-functionalized MoS 2 nanosheets could be generated through Mo-N covalent bonds due to the orbital hybridization between the 5 s orbitals of Mo atoms and the 2p orbitals of N atoms of the solvent molecules. The high selectivity of the sensor is attributed to the coordination reaction between Cd 2+ and O donor atoms of DMF adsorbed on MoS 2 nanosheets. The robust anti-interference is ascribed to the strong binding energy of Cd 2+ and O atoms of DMF. Under the optimum conditions, the electrochemical sensor exhibits highly sensitive and selective assaying of Cd 2+ with a measured detection limit of 0.2 nM and a linear range from 2 nM to 20 μM.
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DOI
PubMed
高影响因子
2D Materials
·
2019
·Vol. 6
·期 4
·045007
·
IF 7.343
Yunyun Huang,Aoxiang Xiao,Guanhua Hou,Hongtao Li,Pengwei Chen,Chaoyan Chen,Bai-Ou Guan
Exploring the photothermal-induced deformation dynamic and mechanism of nanohybrids is of fundamental importance for smart material design and processing at the nanoscale. Here, an optical microfiber interferometer is employed to explore the impact of MoS2 supporting interface on the photothermal-induced deformation of gold nanoshells. Upon analyzing the optical spectra recorded by the microfiber and transmission electron microscopy images, it appears that the MoS2 supporting interface enhances the photothermal effect of the gold nanostructures and confines the electric field oscillation to the nanoshells. Thus, the shape and size evolution of the gold nanoshells are greatly affected by the presence of MoS2 supporting interface. The facile photothermal-induced transformation of the gold nanoshell-MoS2 nanohybrids indicates their technological applications, including catalysis and electronic/optical devices. Furthermore, this transformation process was monitored by an optical microfiber through its evanescent field. This demonstrates the feasibility of using optical fibers to study the inner mechanisms of material transitions in situ, providing a fundamental basis for smart material development at the nanoscale.
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DOI
高影响因子
NPG Asia Materials
·
2016
·Vol. 8
·期 4
·e263
·
IF 8.772
Long Lu-Lu,Chen Jie-Jie,Zhang Xing,Zhang Ai-Yong,Huang Yu-Xi,Rong Qing,Yu Han-Qing
Metal sulfide semiconductors, such as molybdenum disulfide (MoS 2 ) and bismuth trisulphide (Bi 2 S 3 ), are of considerable interest for their excellent applications in photocatalysis and in many other fields. However, the controllable synthesis of MoS 2 /Bi 2 S 3 hybrid nanostructures remains a challenge. In this study, we report a unique sacrificial templating strategy for preparing layer-controlled MoS 2 on three-dimensional (3D) Bi 2 S 3 micro-flowers. For this approach, Bi 2 S 3 was utilized as a sacrificial template to regulate the ion exchange, and the dosage of molybdenum was adjusted to tune the dynamic formation, thus converting the MoS 2 nanosheets on the Bi 2 S 3 micro-flowers from monolayer to multilayer. Such a 3D flower-like hybrid nanostructure enables MoS 2 /Bi 2 S 3 to exhibit adsorption-promoted photocatalysis under visible light irradiation, especially for the excellent photodegradation of low-concentration organic pollutants, for example, azo dye and atrazine. The observed superiority of the 3D MoS 2 /Bi 2 S 3 was mainly attributed to the increased mass transfer, robust light-harvesting capacity, improved charge separation, lower oxygen-activation barrier and enhanced active oxygen yield. Our findings are of interest for the development of novel S-based photocatalysts and provide a new opportunity to efficiently remove low-concentration refractory pollutants.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Haixin Zhao,Jia Huang,Lu Miao,Yuqi Yang,Zuoxiu Xiao,Qiaohui Chen,Qiong Huang,Kelong Ai
The high incidence of kidney disease caused by various factors (such as COVID-19) has triggered an extreme desire for wearable artificial kidney (WAK). Nevertheless, the dialysate regeneration system in WAK presents a very low adsorption capacity of urea, and must rely on the help of urease and zirconium compounds, which make the device too complex and costly, thus limiting their application. In this study, we employ the adsorption activity of defect-rich MoS 2 nanosheets with widened interlayer spacing (WDR-MoS 2 ) for the elimination of three crucial uremic toxins (urea, creatinine, and uric acid). The high adsorption performances of WDR-MoS 2 are owing to the presence of abundant S atoms between the two MoS 2 sheets that can efficiently adsorb uremic toxins through the unique S–N bond. Furthermore, widening the layer spacing of MoS 2 is similar to adjusting the aperture of a filter, which can not only speed up the transport of uremic toxins but also prevent the passage of large molecules (such as proteins). Thus, the WDR-MoS 2 can neither affect cell viability nor produce hemolysis and coagulation in the blood. Finally, a home-made WDR-MoS 2 fixed-bed system without urease and zirconium compounds is used to efficiently remove uremic toxins in the dialysate. WDR-MoS 2 is expected to fundamentally solve the materials science challenges in WAK and provide a new design idea for the development of high-performance 2D material-based adsorbents.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yilin Wang,Qiming Liu,Yirui Liu,LYU Shuying
SnS 2 is considered a potential anode material for sodium-ion batteries (SIBs) due to its high theoretical capacity, abundant resources and non-toxic properties. However, the low Na + diffusion kinetics and large volume expansion of SnS 2 hinder further development and application. Hence, the heterostructured MoS 2 /SnS 2 /NC nanospheres are synthetized through a facile hydrothermal reaction . By coating SnS 2 on MoS 2 templates, the heterojunction composite MoS 2 /SnS 2 /NC combines the advantages of the highly stable nanosphere structure of MoS 2 and the high theoretical capacity of SnS 2 . In conclusion, it delivers a high specific capacity of 603 mAh g −1 at 10 A g −1 after 2000 cycles and excellent rate performance of 750 mAh g −1 at 0.1 A g −1 . Furthermore, the full-battery of MoS 2 /SnS 2 /NC= |Na 3 V 2 (PO 4 ) 3 exhibits a great capacity of 69.8 mAh g −1 at 100 mA g −1 after 100 cycles. The excellent electrochemical performance of the heterojunction material proves it to be an extraordinary anode material for SIBs.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jingfan Zhang,Min Zhao,Yubo Zhao,Jingkun Wang,Yanxia Wu,Kexun Li,Ying Liu
Molybdenum disulfide (MoS 2 ) has been considered as an excellent candidate for microwave absorption applications due to its appropriate electrical conductivity and large area size. However, the absorption efficiency and absorption bandwidth of single-phase MoS 2 nanocomposites have been limited due to the weak electrical conductivity and magnetism . This paper proposes a feasible strategy to optimize the electromagnetic properties of MoS 2 absorbent by Fe-doping. The MoS 2 nanosheets with different Fe concentration have been synthesized a microwave-assisted hydrothermal process. Microstructure characterizations reveal that Fe dopants can facilitate the formation mixed 1T/2H phase MoS 2 nanosheets. Owing to the improved permittivity and permeability properties, impedance matching, as well as attenuation characteristics originated from the doping effect and partial phase transformation, the Fe-doped 1T/2H-MoS 2 nanosheets exhibit excellent electromagnetic wave absorbing properties. Its maximum reflection loss reaches − 60.03 dB at the matching thickness of 5.65 mm, and the effective absorption bandwidth below − 10 dB is 5.33 GHz. Such novel doping strategy provides a new insight for design and controlling the magneto-dielectric properties of MoS 2 nanostructures .
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DOI
高影响因子
Journal of Materials Chemistry C
·
2020
·Vol. 9
·期 5
·1701-1708
·
IF 7.059
Jiaojiao Song,Yican Chu,Zhizhen Liu,Haihua Xu
Few-layer molybdenum disulfide (MoS2), which has weak interlayer van der Waals bonds and strong intralayer covalent bonds, is of huge interest in optoelectronic applications due to its scalable production, tunable bandgap and mechanical flexibility. Here, we present high-performance ambipolar electrolyte-gated field effect transistors (amEGFETs) based on a solution-processed MoS2–polymer hybrid. They exhibit hole and electron mobilities of 0.21 cm2 V−1 s−1 and 0.04 cm2 V−1 s−1, respectively, together with a high current on/off ratio of >106 for both p-type and n-type operations. The pronounced ambipolar characteristics are essentially determined by the large interpenetrating network formed at the semiconductor/electrolyte interface. Using such a device, we demonstrate for the first time low-power operations of complementary metal-oxide semiconductor (CMOS)-compatible and cost-efficient electrical inverter and optical modulator. Our results broaden the future optoelectronic applications of two-dimensional semiconductors.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Hu Sun,Jialu Xu,Jingdong Huang,Guanghui Li,Jun Luo,Mingjun Rao,Zhiwei Peng,Tao Jiang
A hetero-structured few-layer MoS 2 -coated MoO 2 (MoS 2 @MoO 2 ) has been fabricated and applied as an anode material for LIBs . The MoS 2 @MoO 2 was synthesized via two-step fire process: reducing MoO 3 vapor with H 2 for producing Mo powder, and oxidizing-sulfurizing Mo powder with SO 2 . With the aid of thermodynamic computations, it is found that Mo oxidation under SO 2 atmosphere produces limited amounts of S 2 vapor, which will locally sulfurize the particles nearby, resulting in finite and even sulfurization. The as-prepared MoS 2 @MoO 2 includes few-layer MoS 2 (about 3 nm thick) covering the surface, which serves a well-spreading and active material that synergizes with inner MoO 2 to boost the performance for LIBs. Thus, the MoS 2 @MoO 2 could deliver a high reversible specific capacity of 1263 mA h g −1 after 40 cycles at 0.1 A g −1 , and maintain a specific capacity of 1052 mA h g −1 after 150 cycles at 0.2 A g −1 . Even at 0.5 A g −1 , the specific capacity could still keep above 650 mA h g −1 for over 500 cycles. The new method for MoS 2 @MoO 2 synthesis is facile and effective, and may be extended to produce hybrids composed of other transition metal oxides and sulfides.
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DOI
高影响因子
Frontiers of Materials Science
·
2021
·Vol. 15
·期 2
·241-252
·
IF 2.765
Du Yan,Niu Ziwen,Yan Tingjiang,Zhu Kunlei,Yu Yang,Jing Zhihong
Carbon-molybdenum disulfide (C-MoS 2 ) ultrathin nanosheets were prepared by a hydrothermal process, and then AgI/C-MoS 2 were synthesized via an in-situ deposition method. This ternary heterojunction composite exhibited better photocatalytic activity compared with those of one-component (pristine MoS 2 ) and bicomponent (AgI/MoS 2 and C-MoS 2 ) materials for the degradation of organic dyes under the visible-light irradiation. In particular, by comparing with AgI/MoS 2 , the significant role of conductive amorphous carbon in AgI/C-MoS 2 in enhancing the charge transfer during the photocatalytic degradation of dyes was first confirmed by photocurrent response and electrochemical impedance spectroscopy (EIS). A possible photocatalytic mechanism was proposed based on the capture experiment results. Furthermore, a straightforward and interesting way had been applied to test the recycled/newly-prepared AgI/C-MoS 2 composite for revealing its distinctive self-cleaning performance and recyclability characteristic besides its good photocatalytic activity. This work could provide a reference for the design of other new ternary heterojunction composite materials with special structures and properties.
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DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 6
·2490-2501
·
IF 8.307
Liang Yuan,Yingmeng Zhang,Jinhong Chen,Yongliang Li,Xiangzhong Ren,Peixin Zhang,Liwei Liu,Jinxiang Zhang,Lingna Sun
Although the design and synthesis of efficient electrocatalysts for the hydrogen evolution reaction (HER) are highly desirable, severe challenges still need to be addressed. Herein, ultrathin MoS2 nanosheets were vertically grown on CoSe2 hollow nanotube arrays via a simple three-step hydrothermal reaction by using carbon cloth (CC) as a substrate and were subsequently used as a highly efficient HER electrocatalyst (MoS2@CoSe2-CC hybrid). The MoS2 nanosheets uniformly self-assembled on conductive CoSe2 nanotube arrays exhibited a hierarchical and well-ordered structure. Such a unique structure may not only comprise more exposed active sites, but also enable fast electrolyte penetration and facilitate H+/electron transportation to accelerate the reduction and evolution of H2 during the electrocatalytic process. As an HER electrocatalyst with a novel three-dimensional hierarchical structure, the MoS2@CoSe2-CC hybrid exhibited an outstanding catalytic HER performance with a small Tafel slope of 67 mV dec−1 in alkaline media, while only requiring a low HER overpotential of 101 mV at 10 mA cm−2. Notably, the MoS2@CoSe2-CC hybrid also demonstrated exceptional electrochemical durability and structural stability even after 1000 cycles or 48 h of continuous electrolysis. Overall, this work presents a new approach for the design and synthesis of robust, highly active, and cost-effective electrocatalysts for hydrogen generation.
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PubMed
高影响因子
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