SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
An Liu,Ning Chen,Ping Liu,Geng Zhang,Xiyao Liu,Chao Ma,Song Gao
For realizing friction reduction and wear resistance across a wide temperature range, this study proposes a novel interface structure combining micro-arc oxidation (MAO) coatings on titanium alloy with MoSe 2 nanoparticles. Focus on investigating the tribological behavior of this structure across a wide temperature range (RT–500 °C) and its response to temperature. Through detailed characterization, the friction-reducing and lubricating mechanisms during wear were elucidated. The results demonstrate that this structure consistently exhibits friction reduction and lubrication capabilities, with low-shear MoSe 2 particles and molybdenum oxides enhancing the micro-pocket structure. This research provides valuable insights for developing integrated self-lubricating interfaces and improving the high-temperature tribological performance of MAO coatings.
研究领域:
材料科学
·
摩擦学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Peng Li,Shuguo Yu
In this study, a nano-flower MoSe 2 -SnS 2 humidity sensor with S defects with fast response and low humidity hysteresis was prepared for respiratory and skin humidity detection. The increase in S vacancy defects provides more adsorption sites for water molecules and also facilitates the decomposition of water molecules and improves proton conduction. The construction of MoSe 2 -SnS 2 composite prompted an increase in the specific surface area of material exposing more active sites. This promoted the adsorption of water molecules on the device surface and accelerated the electron transfer between water molecules and the sensitive layer. The nanoflower structure of MoSe 2 -SnS 2 can provide channels for water molecules to be transported into the interior of material, which can effectively shorten the response time of sensor. MoSe 2 -SnS 2 sensor exhibited faster response/recovery time (13/15 s), lower humidity hysteresis (1%) and higher stability in the range of 11%-95% RH. In addition, MoSe 2 -SnS 2 humidity sensor can successfully detect respiration and skin moisture, showing the application potential of the sensor in the detection of respiration and skin humidity. This study provides a new idea for the preparation of high-performance 2D nano humidity sensors and promotes the expansion of new application areas for the sensors.
研究领域:
材料科学
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传感技术
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2022
·Vol. 9
·期 21
·5507-5516
·
IF 7.779
Xiaocheng Xu,Rui Wang,Sijie Chen,Alex Trukhanov,Yanxue Wu,Lianyi Shao,Le Huang,Zhipeng Sun
Developing non-noble metal-based electrocatalysts with excellent activity and stability for the hydrogen evolution reaction (HER) is crucial for the efficient electrolysis of water. Herein, self-supported three-dimensional (3D) P-doped NiSe/2H-MoSe2 nanorod arrays (denoted as P-NiSe/MoSe2) were fabricated by a hydrothermal reaction and subsequent selenization and phosphorization processes. Benefiting from P doping, the synergistic effect of the heterostructures, and abundant active sites, the P-NiSe/MoSe2 electrocatalyst exhibits excellent alkaline HER performance, with only 43 mV required to achieve 10 mA cm−2 with a Tafel slope of 93.1 mV dec−1, even remaining stable at 10 mA cm−2 for 30 hours. In addition, theoretical calculations show that the formation of the heterostructure and P doping optimize the H atom adsorption energies and accelerate electron transport, thus improving its performance in the HER. This work offers a hopeful route for the development of low-cost and efficient electrocatalysts through the simultaneous application of heterostructure engineering and heteroatom doping as well as a 3D structure.
研究领域:
材料科学
·
电催化
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
Metals
·
2024
·Vol. 14
·期 5
·595
·
IF 2.6
Huabin Kong,Yihan Wen,Siying Chen,Xiyao Chen,Runzhi Chen,Jiamou Yan,Nianjie Mao
Molybdenum diselenide (MoSe2) is a promising anode for alkali-ion storage due to its intrinsic advantages. However, MoSe2still encounters the issues of structural instability and poor rate performance caused by drastic volume change and sluggish reaction kinetics. Reasonable design of electrode structure is crucial for achieving superior electrochemical performance. Herein, a novel hierarchical structure coupled with 1D/1D subunits is elaborately designed and constructed, in which the MoSe2/CoSe2heterostructure is the “trunk” and the N-doped carbon nanotubes are the “branches” (MoSe2/CoSe2/NCNTs). Benefiting from the properties endowed by unique configurations, MoSe2/CoSe2/NCNTs electrodes manifest faster reaction kinetics and better structure durability. Evaluated as an anode for LIBs and SIBs, MoSe2/CoSe2/NCNTs deliver high reversible capacity, superior rate capability (452 at 10 A g−1in LIBs and 296 at 10 A g−1in SIBs), and prominent cycle life (553 after 2000 cycles at 5 A g−1in LIBs and 310 after 2000 cycles at 5 A g−1in SIBs). Such design conception can also provide guidance for the development of other high-performance electrodes.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Manufacturing Processes
·
2024
·
IF 6.1
An Liu,Song Gao,Hailin Lu
To enhance the tribological properties and corrosion resistance of titanium alloys, this study proposes a novel tribological interface structure combining micro-arc oxidation ceramic coatings with MoSe 2 . Comprehensive analysis using X-ray diffractometry, profilometry, energy-dispersive spectroscopy, and scanning electron microscopy was conducted to evaluate the tribological characteristics of this structure under dry friction and liquid lubrication conditions. Electrochemical experiments assessed the corrosion resistance of the structure. The results indicated that under 3 N-2.5 cm/s, oil lubrication, the structure exhibited the best friction-reducing and lubricating performance, with the friction coefficient reduced by 75 %. The synergistic interaction between the low shear force MoSe 2 particles and the TiO 2 -rich ceramic coating formed a lubricating layer on the surface, thereby achieving reduced friction and enhanced wear resistance. Additionally, this structure demonstrated excellent corrosion resistance. This study provides valuable insights for integrating micro-arc oxidation with new materials in engineering applications.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2020
·
IF 3.807
KaiBo Zhang,XiaoBing Jiang,Min Zeng,Bo Jing
Lithium-ion batteries have progressively taken the place of conventional power sources and been extensively employed in our daily lives. In this study, a simple hydrothermal method was adopted to develop the two-dimensional layered MoSe 2 into three-dimensional porous microspheres and nanosphere structures hydrangea-like via directional polymerization, self-assembly and Ostwald maturation. Subsequently, the dopamine hydrochloride was polymerized and carbonized to modify the curd-shaped MoSe 2 by N-doped carbon coating. The modified MoSe 2 @N-C anode material exhibited a larger specific capacity, better stability and a higher rate at high current density than MoSe 2 anode material. The modified negative electrode material achieved the specific capacity of 553 mAh/g at a current density of 1 A/g and 300.8 mAh/g at 10 A/g. Under high current density, the long-cycle charge-discharge performance test was performed, and the modified material exhibited a significantly large specific capacity and high stability performance. Its electrochemical performance was enhanced due to the N-doped carbon coating layer on the surface that increased the material conductivity and reduced the shuttle effect of polyselenide.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2024
·
IF 5.6
Deshou Xiong,Manyu Luo,Qing He,Xingpeng Huang,Sijin Cai,Shuang Li,Zhenhong Jia,Zhixian Gao
The detection of ammonia (NH 3 )gas holds significant importance in both daily life and industrial production. In this study, the Nb 2 CT x /MoSe 2 sensor was synthesized using a one-step hydrothermal method and applied for NH 3 detection. The morphology and elemental composition of the composites were analyzed through a series of characterization techniques including XRD, TEM, SEM, and XPS, confirming the successful synthesis of Nb 2 CT x /MoSe 2 composite with the optimal mass ratio. The sensing performance of the sensor for NH 3 (0.1–100 ppm) was tested at room temperature (∼25 °C). The results showed that, compared to pure Nb 2 CT x , the sensor based on Nb 2 CT x /MoSe 2 composite exhibited more stable baseline resistance, a 3.5-fold increase in response to 50 ppm NH 3 , and a reduction in response/recovery time by 56.4 s/32.1 s. Additionally, the sensor's response to NH 3 (1 ppm, 50 ppm, 100 ppm) varied by less than 10 % over 90 days, demonstrating excellent stability. The sensing mechanism of NH 3 by Nb 2 CT x /MoSe 2 composite is attributed to the formation of a p-n heterojunction and surface charge transfer at the interface between p-type Nb 2 CT x and n-type MoSe 2 . Finally, the superior selectivity mechanism of the composite for NH 3 was investigated using first-principles calculations. This work opens a new avenue for exploring the application potential of Nb 2 CT x MXene-based nanocomposites in NH 3 detection.
研究领域:
材料科学
·
传感器技术
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 48
·期 3
·1372-1380
·
IF 3.3
Peng Sun,Menglu Zhang,Yue Liu,Jiahua Zhao,Jiawei Yang,Yufeng Wang,Yongfei Wang,Zhiqiang Zhang
Lithium-ion batteries have been regarded as a promising power source for various electronic devices. Compared to the traditional graphite anode material, MoSe2 possesses a higher theoretical capacity. However, MoSe2 anode materials are limited by low electronic conductivity and large volume changes during cycling. This study reports 1T–2H MoSe2/N-doped rGO nanocomposites, fabricated through a hydrothermal method. The 1T–2H MoSe2/N-doped rGO electrode delivers a high reversible capacity of 483.6 mA h g−1 after 1000 cycles at 1000 mA g−1. It also possesses a high reversible capacity of 474.9 mA h g−1 even at a current density of 2000 mA g−1, thus, making it an important potential lithium-ion battery anode.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Xinpeng Chen,Aijing Li,Lili Xing,Jiapeng Wang,Yurong Sun,Yifeng Wang,Guoqiang Chen,Tieling Xing,Lei Xu
Photocatalysis is based on ultraviolet light, while piezoelectric catalysis is powered by mechanical energy and piezoelectric effect. Both types of catalysis have been employed in degradation of pollutants and wastewater treatment. In this work, molybdenum diselenide (MoSe 2 ) was mixed with polyvinylidene difluoride (PVDF) to produce a MoSe 2 /PVDF composite foam with flexible porous structure. The composite foam exhibited excellent light absorption and effective Rhodamine B (RhB) removal. MoSe 2 could enhance the piezoelectric catalytic performance of PVDF by promoting the formation of β-phase. In addition, this composite foam piezo-photocatalytically removed more than 99.1 % of RhB within 60 min under light irradiation and stirring. In electron spin resonance (ESR) and capture active species experiments, it was found that •OH, •O 2 − and h + contribute to the removal of RhB. The Fukui function based on Density Functional Theory (DFT) and mass spectrometry were used to identify the degradation pathway of RhB. The evaluation results of toxicity evaluation software (T.E.S.T.) to degradation intermediates of RhB showed that the overall toxicity gradually decreased in degradation process. Due to the existence of MoSe 2 , the composite represented an outstanding evaporation rate (2.23 kg m −2 h −1 ) under one solar irradiation. Furthermore, MoSe 2 /PVDF also exhibited remarkable antibacterial properties, which is favorable to its practical application. This work presents a novel high-performance piezo-photocatalysis material, which proposes innovative environmental governance strategies for obtaining clean water through multi-component synergism.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Ting Wang,Weifang Zhao,Ran Ren,Huilin Lan,Tengfei Zhou,Juncheng Hu,Qingqing Jiang
Exploring robust electrode materials which could permit fast and reversible insertion/extraction of large K + is a crucial challenge for potassium-ion batteries (PIBs). Smart interfacial design could facilitate electron/ion transport as well as assure the integrity of electrode. Herein, Cetyltrimethylammonium bromide (CTAB) was found to play bifunctional roles in construction of Nb 2 CT x @MoSe 2 heterostructure. Firstly, functionalization of CTAB on the surface of Nb 2 CT x could influence the subsequent growth of MoSe 2 by electrostatic effect, stereochemical effect and the synergetic Lewis acid-base interaction, leading to the formation of Nb 2 CT x @MoSe 2 with tiled heterostructure. Secondly, the interlayer spacing of Nb 2 CT x was expanded from 0.77 to 1.21 nm owing to the pillar effect of CTAB. As excepted, the capacity retention was 80 % from 100 mA g −1 (406 mA h g −1 ) to 1000 mA g −1 concerning rate capability and the specific capacity maintained at 240 mA h g −1 (at 2000 mA g −1 ) over 300 cycles. The calculated D K values from Galvanostatic intermittent titration technique (GITT) measurement of the titled C-T-Nb 2 CT x @MoSe 2 @C electrode is two orders of magnitude larger than the traditional T-Nb 2 CT x @MoSe 2 @C electrode, further confirming intimate interface between MoSe 2 and Nb 2 CT x could provide convenient potassium-ion transport channels and fast diffusion kinetics. Finally, ex-situ characterizations at different charging and discharging voltage stages, including ex-situ XRD/Raman/HRTEM/XPS have been carried out to reveal the potassium storage mechanism. This work provides a facile strategy for the regulation of interface engineering by the assist of CTAB which could extend to other MXenes-TMDs (Transition metal dichalcogenides) hybrid electrodes.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Qiuyan Hao,Guoliang Cui,Yongguang Zhang,Jingde Li,Zisheng Zhang
Despite their high theoretical capacity (1672 mAh g −1 ) and energy density (2600 Wh kg −1 ), the commercialization of lithium/sulfur (Li/S) batteries is hindered by the polysulfide shuttle phenomenon and sluggish electrode kinetics. Herein, we demonstrate a novel MoSe 2 /MoO 2 heterostructure via water-steam etching as an effective sulfur host for high-performance Li/S batteries. The as-prepared flower-like MoSe 2 /MoO 2 heterostructure exhibited strong affinity toward polysulfide intermediates with a strong adsorption energy of −3.46 eV, rendered by MoO 2 , and enhanced the redox kinetics significantly. Consequently, S/MoSe 2 /MoO 2 electrode, with 66% sulfur content, delivered a high initial capacity of 1100 mAh g −1 and high capacity retention of 77.1% after 500 cycles at 0.5 C. The synthesis of MoSe 2 /MoO 2 heterostructure presents a promising strategy to design sulfur hosts for high-performance Li/S batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2022
·Vol. 19
·期 9
·2205853
·
IF 15.153
Junwen Xie,Yinhang Zhang,Jinming Dai,Zuoxiang Xie,Jie Xue,Kun Dai,Fei Zhang,Dan Liu,Junye Cheng,Feiyu Kang,Baohua Li,Yun Zhao,Lin Lin,Qingbin Zheng
A booming demand for wearable electronic devices urges the development of multifunctional smart fabrics. However, it is still facing a challenge to fabricate multifunctional smart fabrics with satisfactory mechanical property, excellent Joule heating performance, highly efficient photothermal conversion, outstanding electromagnetic shielding effectiveness, and superior anti-bacterial capability. Here, a MoSe 2 @MXene heterostructure-based multifunctional cellulose fabric is fabricated by depositing MXene nanosheets onto cellulose fabric followed by a facile hydrothermal method to grow MoSe 2 nanoflakes on MXene layers. A low-voltage Joule heating therapy platform with rapid Joule heating response (up to 230 °C in 25 s at a supplied voltage of 4 V) and stable performance under repeated bending cycles (up to 1000 cycles) is realized. Besides, the multifunctional fabric also exhibits excellent photothermal performance (up to 130 °C upon irradiation for 25 s with a light intensity of 400 mW cm −2 ), outstanding electromagnetic interference shielding effectiveness (37 dB), and excellent antibacterial performances (>90% anti-bacterial rate toward Escherichia coli , Bacillus subtilis , and Staphylococcus aureus ). This work offers an efficient avenue to fabricate multifunctional wearable thermal therapy devices for mobile healthcare and personal thermal management.
研究领域:
材料科学
·
纳米技术
·
可穿戴技术
·
热管理
·
电磁干扰屏蔽
·
抗菌技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）