ACS Applied Nano Materials
·
2026
·
IF 5.8
Lulu Wang,Yunhui Shi,Yongxin Wang,Yao Xu,Chang Li,Long Zheng,Boyao Liu,Heqi Li
Abstract To address agglomeration, poor dispersion stability, and the trade-off between removal rate and surface quality of nano-CeO2 abrasives in chemical mechanical polishing (CMP), this work focuses on cubic CeO2 nanoparticles (C−CeO2) with exposed (100) facets and systematically compares sodium dodecyl sulfate (SDS)-based composite modifications with 3-glycidyloxypropyltrimethoxysilane (GPTMS), polyvinyl alcohol (PVA), oleic acid (OA), and 2-methylpiperazine (2 MP). Comprehensive characterizations were used to elucidate the structure−property relationships between functional groups, interfacial interactions, and polishing performance. Results show that SDS-based composite modification suppresses nanoparticle agglomeration through synergistic electrostatic and steric effects. Among the four systems, C−CeO2-SDS-GPTMS exhibits the best dispersion, wettability, and Ce3+ retention due to stable Si−O−Ce bonds, achieving a material removal rate (MRR) of 3230 Å/min (∼52% increase) and an ultra-low Sq of 0.0321 nm on a 5 × 5 μm SiO2 dielectric layer. The PVA system balances high removal rate and low damage; OA shows stable adsorption but moderate dispersibility, whereas 2 MP exhibits the poorest performance because of weak coordination and severe hydrophobic agglomeration. Overall, the effectiveness of composite modification depends strongly on interfacial bonding strength and hydrophilic-hydrophobic balance. This study provides a systematic theoretical and experimental foundation for designing high-performance nano-CeO2-based CMP abrasives.
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2014
·
IF 5.211
Yanhua Zhang,Fei Chen,Rong Tu,Qiang Shen,Lianmeng Zhang
High performance lithium ion conducting Li 7 La 3 Zr 2 O 12 solid electrolytes are prepared for the first time by field assisted sintering technology (FAST). The effect of sintering temperature on the phase compositions , microstructure and Li ionic conductivity is systematically investigated. The results show that pure cubic phase LLZO can be obtained at a range of temperatures from 1100 to 1180 °C for no more than 10 min. For the sample sintered at 1150 °C, a maximum relative density of 99.8% with a total ionic conductivity as high as 5.7 × 10 −4 S cm −1 are obtained at room temperature . This value is the highest among the present research. Compared with the traditional preparation methods, the current FAST is very promising to obtain high performance LLZO for its advantages of very short sintering time , a single preparation step of reaction-densification processing, and relatively lower sintering temperature.
研究领域:
材料科学
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能源科学
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高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2017
·
IF 2.813
Wei Hong,Xiaoqing Yan,Renhong Li,Jie Fan
Stabilizing gold nanoparticles (AuNPs) within a desired size range is critical to realize their promising catalytic performance in many important reactions. Herein, we investigate the anti-sintering properties of cubic mesoporous silica (FDU-12) as a function of pore entrance size. Simple adjustments to the type of organic template and reaction temperature enable the successful synthesis of FDU-12 with controllable entrance sizes (< 3, 3–5 and 7 nm). Excellent anti-sintering properties are observed for FDU-12 with a sub-5-nm entrance size (3–5 nm) over a wide loading concentration (1.0–8.3 wt%) and the AuNPs can be stabilized within a 4.5–5.0-nm range after calcination at 550 °C in air for 5 h. Smaller entrance size (< 3 nm) prevents ingress of 3-nm AuNPs to the mesopores and results in low loading capacity and sintering. Conversely, FDU-12 possessing a larger entrance size (7 nm) shows promising anti-sintering properties at high loading concentrations, although catalytic performance is significantly lost at lower concentrations (e.g. 2.1 wt%, 14.2 ± 5.5 nm). Different anti-sintering mechanisms are proposed for each of the different FDU-12 entrance sizes. Additionally, catalytic data indicates that the obtained 4.5-nm AuNPs supported on FDU-12 with a sub-5-nm entrance size exhibit excellent mass-specific activity (1544 mmol g Au –1 h –1 ) and selectivity (> 99%) at 230 °C for the gas-phase selective oxidation of cyclohexanol.
研究领域:
材料科学
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催化化学
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Junliang Zhu,Lin Bo,Jianbiao Kong,Yangbo Hou,Linghao Zhao,Changcun Li,Degang Zhao
Recently, the cubic SnSe with multiple valleys and low thermal conductivity has become the focus of current research and receives extensive attention worldwide. However, the cubic SnSe is difficult to exist stably at normal temperature and pressure. In this work, the cubic rock-salt SnSe samples were successfully stabilized at room temperature by AgBiTe 2 alloying. Microstructure and thermoelectric properties of the Sn 1–2 x (AgBi) x Se 1–2 x Te 2 x ( x = 0, 0.10, 0.15, 0.20, 0.25, 0.30) were studied systematically. With the increase of AgBiTe 2 addition, the crystal structure of SnSe gradually transformed from orthorhombic to cubic phase. Due to the doping of heterogeneous atoms and the phase structural transformation, the carrier concentration and carrier mobility of Sn 1–2 x (AgBi) x Se 1–2 x Te 2 x were optimized, thus the electrical properties were significantly enhanced. An obviously enhanced zT max of 0.70 at 750 K and a zT ave of 0.29 (300–750 K) were achieved in Sn 0.50 (AgBi) 0.25 Se 0.50 Te 0.50 . In addition, the mechanical properties of Sn 1–2 x (AgBi) x Se 1–2 x Te 2 x were also strengthened. A higher Vickers hardness of ∼1.8 GPa was obtained in Sn 0.40 (AgBi) 0.30 Se 0.40 Te 0.60 .
研究领域:
材料科学
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热电学
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固体物理
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无机化学
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机械工程
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高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2021
·Vol. 35
·期 6
·1098-1103
·
IF 0.957
Zhai Xiaoyu,Peng Xiang,Ma Yunqian,Liu Ting,Liu Jiaxiang
The effect of particle size on the density and resistivity of ITO green bodies and targets was systematically investigated. The experimental results show that the relative density of ITO green bodies decreases with the increase of ITO particle size. When the particle size is 10.7 nm, the relative density of ITO green bodies rises to the maximum value of 56.6%. The resistivity declines exponentially with the increase of particle size, which satisfies the exponential equation of R = exp(−41.823 × d). When the particle size is 41.6 nm, the resistivity reaches the minimum value of 0.8 Ω·cm. The relative density of ITO target decreases with the increase of particle size. Fine particles can increase the driving force of densification in initial stage. Electron mobility, caused by grain boundary scattering, will increase due to the increase of particle size or the decrease of grain boundary potential. When the particle size is 10.7 nm, the target with compact grain stacking and low porosity shows a maximum relative density of 99.25%, and the resistivity reaches the minimum value of 0.34×10 −3 Ω·cm.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
SOLID STATE IONICS
·
2018
·
IF 2.751
Xing Xing Pan,Jian Xin Wang,Xiao Hui Chang,Ya Dong Li,Wan Bing Guan
A solid-liquid composite method (SLM) of Al-substituted cubic lithium lanthanum zirconium garnet (c-LLZO) was developed. Cubic LLZO powders whose composition was Li 6.23 Al 0.26 La 3 Zr 1.88 O 11.76 were prepared from the stoichiometric mixtures of lithium acetate , lanthanum oxide, zirconia and alumina , followed by an annealing of the dried precursor at 750 °C for 12 h in an air atmosphere. The resultant powders were characterized by XRD , SEM and ICP-OES. The conventional solid-state reaction methods using carbonates and hydroxides as lithium sources are also simply introduced as a comparison. In addition, the phase formation of c-LLZO powders synthesized by the ZrO 2 powders with different specific surfaces as raw material was also investigated. The results show that the cubic garnet phase LLZO powders was obtained when the value of the specific surface area (SSA) of the material ZrO 2 powder was about 110 m 2 g − 1 . Sintering these cubic phase powders at 1150 °C for 6 h in air after uniaxial pressing obtained a dense ceramic pellet with a relative density of 91.2% and ionic conductivity of 2.54 × 10 − 4 S cm − 1 at 23 °C.
研究领域:
材料科学
·
电化学
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 28
·13481-13495
·
IF 4.682
Li Wangchang,Su Guangzhou,Li Wanjia,Ying Yao,Yu Jing,Zheng Jingwu,Qiao Liang,Li Juan,Che Shenglei
Well-dispersed silica-coated FeCo nanocubes are mass prepared using the polyol process and are then amine-functionalized with 1,6- diaminohexane. Further, the almost “matrix-free” soft magnetic nanocomposites (SMNCs) are fabricated using the FeCo nanocubes as bricks, which are cross-linked by epoxy monomers in which the nanoparticles are well separated. These SMNCs exhibit a dense microstructure and extremely high resistivity that limit the eddy current loss, thereby allowing excellent high-frequency inductance performance in a few hundred megahertz and extending the cutoff frequency to 2–7 GHz. The permeability is approximately 8.0 with excellent high-frequency stability at 1 GHz. The quality factor of the nanocomposites exceeds 200 in the 100 MHz range and 500 in the few megahertz range that corresponds to the 36 and 13 nm silica-coating samples, respectively. Furthermore, they exhibit a novel microwave absorbing property with an extremely thin thickness. The absorption approaches − 46.5 dB at 2.41 GHz with only a 1.75 mm nanocomposite absorbing layer. This SMNC presents great potential as multifunction components to satisfy the urgent requirement of wide bandgap semiconductor power in the megahertz range and microwave devices in the gigahertz range.
Graphical abstract
研究领域:
材料科学
·
纳米技术
·
电磁材料
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 32
·24895-24905
·
IF 2.779
Liu Chao,Chen Hang,Lin Ping,Hu Haihua,Meng Qingyu,Xu Lingbo,Wang Peng,Wu Xiaoping,Cui Can
CsPbBr 3 emerges as a representative inorganic perovskite due to its feasible synthesis and outstanding properties. In this work, high-quality orthorhombic and cubic CsPbBr 3 single crystals (SCs) are successfully grown by a modified inverse temperature crystallization method. Current–voltage ( I – V ) and current–time ( I – t ) curves were systematically measured under various biases and light illumination intensities to investigate the correlation between the photoelectrical properties and the crystal structures. Even though the cubic CsPbBr 3 has a larger averaged carrier lifetime than those of the orthorhombic CsPbBr 3 crystal, extremely asymmetry in the I–V curves and abnormal hysteresis behaviors are observed in cubic CsPbBr 3 , and an overshoot followed by a slow decay in the photocurrent becomes more pronounced in cubic CsPbBr 3 as light illumination intensity increases, reflecting the significant effect of ion migration in the photoelectric performance in cubic CsPbBr 3 . On the other hand, the photocurrent in orthorhombic CsPbBr 3 exhibits excellent response ability and stability, showing a large light-to-dark ratio of 15.2, roughly 7 times larger than cubic CsPbBr 3 . The differences in the photoelectrical properties between cubic and orthorhombic CsPbBr 3 provide insights into the influence of crystal structure on the photoelectronic properties of perovskite materials.
研究领域:
材料科学
·
物理学
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Xinyu Tian,Qunchao Qi,Bin Hou,Yannan Qian
We exploited a simple hydrothermal route without adding organic additives or hard templates to synthesize cubic-shaped LiNbO 3 :Yb 3+ /Er 3+ with the size of 400–500 nm. Based on the time-dependent investigation on the crystal structure and morphology, Yb(NO 3 ) 3 and Er(NO 3 ) 3 not only could emit green and red upconversion (UC) emission but also could be used as an etchant to increase dissolution rate of the Nb 2 O 5 raw material in the hydrothermal synthesis route. Without addition of Yb 3+ /Er 3+ ions, LiNbO 3 phase could not be formed at even hydrothermal time of 48 h. The time-dependent Raman spectra showed the Raman peaks of LiNbO 3 were occurred at the reaction time of 48 h, and the impurity Nb 2 O 5 phase was disappeared with lengthening hydrothermal time. After calcining at 1050 °C for 2 h, the new Raman peaks at 440/487/531/552 cm −1 and the disappeared OH – absorption peaks at 3429 and 1628 cm −1 favored to produce the bright UC emissions in LiNbO 3 :Yb 3+ /Er 3+ nanocrystals. The pump power dependence and UC mechanism were studied under 980 nm excitation.
研究领域:
材料科学
·
光学
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Yongpan Chen,Yan Wang,Haohao Ji,Xiaojian Mao,Jian Zhang,Shiwei Wang
In this work, a novel Y 4 Zr 3 O 12 transparent ceramic was first and simply fabricated via pressureless sintering in air without additives. The as-prepared Y 4 Zr 3 O 12 ceramics exhibited a single-phase cubic fluorite structure. And all open pores got closed at a critical density of ∼93.5 %. Moreover, Y 4 Zr 3 O 12 ceramic showed significant transparency in the visible wavelength when sintered between 1525 and 1625 °C. Peak performance was observed in the 1600 °C-sintered ceramic with an average grain size of ∼1.53 μm, achieving the highest in-line transmittance of 63.1 % at 600 nm (1 mm thickness), which approached 80 % of the theoretical limit. The optimal Y 4 Zr 3 O 12 sample had a high refractive index of ∼2.04 at 600 nm, a large Abbe’s number of ∼53.4, an oxygen ion polarizability of 2.28 ± 0.06 Å 3 , and an optical basicity of 0.94 ± 0.03. These results position transparent Y 4 Zr 3 O 12 ceramic as a promising candidate for diverse applications, spanning optical/photonic devices and high-performance transparent windows for consumer electronics.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.7
Runjing Xu,Han Xiao,Yuan Fang,Ya Chen,Pengfei Zhang,Kailin Li,Yuxuan Li,Huinan Yu,Jiayun Zhang,Chaoxin Wu,Xin Gao,Tao Meng,Xiaodong Chen,Lifeng Cui
Rechargeable magnesium-ion batteries (RMBs) demonstrate notable benefits, including higher theoretical energy density, cost-effectiveness, and improved safety characteristics, positioning them as a viable substitute for conventional energy storage solutions. Nevertheless, the ongoing development of high-performance RMBs continues to face inevitable challenges, such as unsatisfactory practical capacity, inadequate cycle durability, swift energy degradation, and a comparatively limited-service life. Herein, CoS/NiS nanomaterials with cubic-shaped morphology were prepared by a two-step metal sulfide template-free solvothermal synthesis method. The material with internal cavity structure effectively mitigates the large expansion of magnesium-ion battery cathode material due to Mg 2+ embedding during the charging and discharging process, and provides a robustness electrode-electrolyte interface, thus greatly improving the cycle life. Besides, the introduction of Ni elements into CoS materials may form heterojunctions thereby lowering the potential barrier of the conversion reaction and improving the reaction kinetics and redox reversibility. In addition, the abundance of highly electronegative S S bonds in the CoS/NiS material, which also provides many electrochemically active sites and smooth transport paths for the embedding of Mg 2+ , leads to the reduction of its polarization and the improvement of its reaction kinetics, which makes the CoS/NiS as a RMBs cathode material with a high specific capacity and a long cycling life. Thus, this research presents a feasible and effective strategy for enhancing the Mg 2+ storage capability of engineered CoS nanomaterials, with potential applicability and adaptability to other electrode materials.
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 15
·12026-12040
·
IF 2.22
Mao Min,Xu Jing,Li Jingjiao,Zhao Sheng,Li Xuanhao
It was the constant pursuit of researchers to explore catalysts with higher catalytic activity, and the use of co-catalysts to modify the performance of photocatalytic materials had a significant effect on charge separation. In this paper, the non-precious metal NiS-modified ZnCo 2 O 4 composite catalytic material prepared by hydrothermal method had high-efficiency catalytic performance. When the weight ratio of NiS to ZnCo 2 O 4 was 12%, the optimal catalytic activity is 3.57 mmol g −1 h −1 , which was more than twice that of ZnCo 2 O 4 . The presence of NiS not only improved the specific surface area of the catalyst and its ability to respond to light, but the close interface formed by the combination of the two monomer phases accelerated the transfer and the utilization of the photocharge on ZnCo 2 O 4 to NiS, thereby promoting the separation of electron holes and improving the photocatalytic activity of the catalyst. According to the research results, the mechanism of hydrogen production in the photocatalytic system was revealed. In this paper, NiS was used to modify the bimetallic oxide with cubic appearance, which provided a new strategy for the development of new photocatalysts.
研究领域:
材料科学
·
物理化学
·
纳米催化
·
能源化学
·
半导体光催化
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高影响因子
危险品化学品经营许可证（带存储）