Materials Today Communications
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2024
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IF 3.7
Jianyu Xu,Cansen Liu,Ran Zhang,Xiaoqing Deng,Yaping Zhou
Developing and manufacturing novel coatings with excellent tribological performance using environmentally friendly and simple methods hold significant potential and challenge for reducing energy consumption and carbon emissions. Here, we use a gentle method to synthesize the MoS 2 -load CeO 2 nanohybrid (CeO 2 @MoS 2 ) as an additive to construct a Co-CeO 2 @MoS 2 composite coating with friction reduction and wear resistance through a low-cost electrodeposition technique. The friction measurement results show that CeO 2 @MoS 2 nanohybrid effectively reduces the friction coefficient and increases the wear resistance compared to single CeO 2 or MoS 2 . The synergistic effect of hard CeO 2 and soft MoS 2 gives the Co-CeO 2 @MoS 2 coating with an extremely low coefficient of friction of about 0.05 and a wear rate of about 3.53×10 −6 mm 3 (N·mm) −1 . In addition, the Co-CeO 2 @MoS 2 coating can maintain an extremely low coefficient of friction with long-term stability in tribological tests. This work provides a novel strategy for constructing coatings with remarkable tribological performances and promotes the application of CeO 2 @MoS 2 nanohybrid as an additive to improve material properties.
研究领域:
材料科学
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2020
·Vol. 31
·期 9
·6690-6697
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IF 2.22
Liu Xingbin,Meng Fanming,Yu Bo,Wu Hao
The flower-like CeO 2 /MoS 2 heterojunction was composed by self-assembly of MoS 2 nanoflowers and ultrafine CeO 2 nanoparticles through high-temperature nitrogen annealing. The crystal structure, morphology, specific surface area, chemical state, and optical properties of flower-like CeO 2 /MoS 2 heterostructure material were analyzed by XRD, SEM, (HR) TEM, BET, XPS, UV–Vis, and PL characterization methods. Flower-like CeO 2 /MoS 2 heterostructure material has a large specific surface area and strong adsorption capacity. In the photodegradation of methyl orange, the 20% CeO 2 /MoS 2 material has the best photocatalytic performance, the degradation efficiency of 20% CeO 2 –MoS 2 reaches 96.1% in 90 min and the reaction rate constant ( k ) is 0.0325 min −1 , far exceeding the single-component MoS 2 and single-component CeO 2 . After detailed analysis, we know that the large specific surface area, excellent visible light absorption, and rapid separation of electron–hole pairs help to effectively improve photocatalytic efficiency.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED POWDER TECHNOLOGY
·
2025
·
IF 4.2
Jianjian Luo,Keqing Zhou,Yan Ding,Lian Yin,Yanan Hou
Prior to the practical application of epoxy resins (EP), critical issues regarding the fire safety of flammable and toxic smoke releases must be addressed. Here, novel nanoarchitectonics with dual self-antiaggregating structure were fabricated in which CeO 2 nanoparticles were grown in situ on molybdenum disulfide (CeO 2 -MoS 2 ). CeO 2 alleviated the re-agglomeration of MoS 2 , and then CeO 2 -MoS 2 further mitigated the reunification effect of zeolite imidazolate framework-8 encapsulated ammonium polyphosphate (APP@ZIF-8) in the EP matrix. When CeO 2 -MoS 2 was employed as a synergist to replace 0.5 wt% of APP@ZIF-8 flame retardant, the thermal stability of EP composites was significantly improved, as evidenced by a 41.8% reduction in the maximum mass loss rate compared with pure EP. In addition, the PHRR, PSPR, PCO, and PCO 2 values of EP/0.5C-M/9.5A@Z were decreased by 65.8%, 47.9%, 67.0%, and 67.4%, respectively, while its LOI value improved to 28.2%. Benefit from the barrier and catalytic effect of CeO 2 -MoS 2 nanoarchitectonics, in conjunction with the subsequent formation of multiple metal oxides and phosphorus-containing substances that form an expanding char layer, preventing the heat-mass exchange and smoke diffusion. This research suggests a feasible solution to the problem of high fire hazards in EP.
研究领域:
材料科学
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火灾安全工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2024
·Vol. 28
·期 8
·2515-2530
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IF 2.6
Liu Cansen,Tai Xiaoming,Xu Jianyu,Xie Huisi,Li Jinyan
Rubber tire mold fouling is a severe problem leading to mold surface corrosion, tire defects, and extra energy consumption. Traditional mechanical and chemical cleaning is inefficient and induces mold surface damage. Low surface energy organic coating displays antiadhesive behavior but is susceptible to wear. Here, we develop a bioinspired Co-CeO 2 /MoS 2 coating with effective mechanical robustness, corrosion resistance, and antifouling behavior by leveraging a slippery liquid-infused surface (SLIPS) strategy. The micro-nanostructure of the coating serves as mechanical stability and anticorrosion skeleton with the infused lubricant acting as a slippery antifouling surface. The variation of microstructure, mechanical strength, corrosion resistance, and antifouling behavior of the coating with individual and synergistic addition of CeO 2 and MoS 2 is systematically characterized. The slippery Co-CeO 2 /MoS 2 coating shows excellent mechanical stiffness, corrosion resistance, and antifouling performances in rubber vulcanization conditions. Graphical abstract
研究领域:
材料科学
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防腐蚀工程
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生物仿生学
✓ 已验证
DOI
高影响因子
ANALYTICAL BIOCHEMISTRY
·
2020
·
IF 2.877
Wenjun Li,Xiuwen Qiao,Chenglin Hong,Chaoyun Ma,Yiju Song
A sandwich-type immunosensor for detecting the concentration of carcinoembryonic antigen (CEA) was prepared. In this work, gold nanoparticles (Au NPs) were used as platform to attach more primary antibody (Ab 1 ) due to excellent electrical conductivity and good biocompatibility. Molybdenum disulfide-Cerium oxide (CeO 2 -MoS 2 ) nanohybrid was used as a carrier to absorb lead ions (Pb 2+ ) and the second antibody (Ab 2 ). CeO 2 -MoS 2 -Pb 2+ -Ab 2 was used as a nanoprobe to detect CEA antigen. Under optimal conditions, square wave voltammetry (SWV) successfully displayed the electrical signal of Pb 2+ . The designed electrochemical immunosensor has excellent analytical performance. In addition, the detection range was 0.001–80 ng/mL and the minimum detection limit was 0.3 pg/mL (S/N = 3), which had good selectivity and stability. Finally, the proposed immunosensor successfully detected the concentration of CEA in the serum of the sample, which provided a feasible method for CEA testing.
研究领域:
分析化学
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生物传感器
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纳米材料
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电化学
·
癌症诊断
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yingnan Wang,Yiyuan Liu,Shujuan Jiang,Shaoqing Song
The decreased reaction activation energy and energetic carrier transfer kinetics behavior for H 2 O overall splitting concerning with the conducive chemisorption, and oriented conversion of *H and *OH are significantly important for efficiency and separation of H 2 generation. Herein, the concerns are addressed with crystal strain engineering induced by regulating Mo S and Ce O bonding lengths of CeO 2 /MoS 2 hetero photocatalysts to boost carrier transfer behavior and synergistically activate surface sites for eminent H 2 photocatalytic evolution. Ultrafast spatiotemporal atomic scale characterizations verify that CeO 2 /MoS 2 hetero photocatalysts endow an amplified polarization field pointing from the hexagonal MoS 2 {002} to cubic-phase CeO 2 {200} with an enlarged intensity to ~2.22 times, so prolonging the lifetime of charge carrier up to ~457 % on surface sites. Also, Mo 3 d and Ce 3 d as exposed surface redox sites by extending Mo S and Ce O promote chemisorption of *H and *OH, respectively, along with activation energy of H 2 O splitting down to ~73 %. Efficiencies for solar to H 2 from 1.30 % at 25 °C to 3.53 % at 60 °C under AM 1.5G are achieved, with the release of many H 2 bubbles. Our study highlights crystal strain engineering to synergistically regulate charge transfer behavior and surface site activation for photocatalytic H 2 production efficiency and releasing.
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产品关联
DOI
高影响因子
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