JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Lei Tan,Qifeng Wu,Zengsheng Liu,Qiheng Chen,Hongling Yi,Zixiang Zhao,Liubin Song,Shengkui Zhong,Xianwen Wu,Lingjun Li
O3-type layered transition metal oxides (Na x TMO 2 ) have attracted extensive attention as a promising cathode material for sodium-ion batteries because of their high capacity. However, the irreversible phase transition especially cycled under high voltage remains a concerning challenge for Na x TMO 2 . Herein, a Ti-substituted NaNi 0.5 Co 0.2 Mn 0.3 O 2 cathode with strongly suppressed phase transition and enhanced storage stability is investigated. The Ti substitution effectively inhibits the irreversible phase transition and alleviates the structural change even charged to 4.3 V during the repeated Na + deintercalation process. After storing in air or water, the original O3 phase structure of the material is integrally maintained without the generation of impurity phase. As a result, the as-prepared material shows excellent long-term cycle stability and rate performance when charged to a high voltage of 4.3 V.
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高影响因子
CERAMICS INTERNATIONAL
·
2015
·Vol. 41
·期 5
·6676-6682
·
IF 2.605
Pei Peng,Ya-Ya Hu,Yong Liu,Shi Chen,Jing Shi,Rui Xiong,Yue Zhang
Magnetoelectric (ME) ceramic composites of CoFe 2 O 4 (CFO) and Pb(Zr,Ti)O 3 (PZT) with varied composition ratios were sintered using a spark plasma sintering (SPS) method. The characterization of the ceramic compositions and morphologies revealed an even distribution of the CFO and PZT phases. Physical property measurements showed that when the CFO mass percent increased from 8% to 15%, the piezoelectric constant and dielectric constant decreased monotonously, while the saturation magnetization and dielectric loss were enhanced. It was determined that a CFO mass percent of 10% or less resulted in a significant change of the polarization behaviour and a clear enhancement of the ME conversion voltage coefficient ( α E ) with an applied magnetic field . In contrast, CFO mass percentages greater than 10% had a reduced α E , and their polarization behaviour was not influenced by an applied magnetic field. With an increasing proportion of CFO in the composite, the α E first increased and then decreased. The maximum value of the α E indicated an optimal proportion of CFO (10%), which is attributed to a competition between the improved magnetostriction and deteriorating electric behaviour in the composite with the addition of CFO.
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高影响因子
CERAMICS INTERNATIONAL
·
2015
·Vol. 41
·期 5
·7133-7139
·
IF 2.605
Rui Du,Yujing Bi,Wenchao Yang,Zhe Peng,Meng Liu,Yang Liu,Baoming Wu,Bangcheng Yang,Fei Ding,Deyu Wang
To improve the cyclic stability of LiNi 0.8 Co 0.1 Mn 0.1 O 2 cycled between 2.8 and 4.5 V vs. Li/Li + , titanium was incorporated into LiNi 0.8 Co 0.1 Mn 0.1 O 2 at various molar concentrations of 1, 2, 3 and 5% during the synthesis. The XRD , EDS and XPS analyses indicated that the titanium ions were effectively incorporated into the lattice of ternary oxides by occupying the transitional metal positions. Among the investigated molar concentrations, 2% Ti-substituted LiNi 0.8 Co 0.1 Mn 0.1 O 2 exhibited the best multifaceted performances with a relatively high capacity (205.7 mA h g −1 at 0.1 C), good rate capability (178.2 mA h g −1 at 1 C, 155.3 mA h g −1 at 5 C) and acceptable cyclic stability (86.9% at the 200th). The post-mortem analysis indicated that Ti substitution alleviates cracking from secondary particles to primary ones. This behavior is most likely due to the decreased ratio of volumetric deformation ( i.e. , 4.82% for the 2% Ti-substituted sample, which is 19.8% lower than that of the pristine one). Our results demonstrate that mechanical properties may play a crucial role in its long cyclability for use as a high-capacity ternary cathode.
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高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 38
·21766-21773
·
IF 10.733
Shixue Zhang,Huan Liu,Bin Cao,Qizhen Zhu,Peng Zhang,Xin Zhang,Renjie Chen,Feng Wu,Bin Xu
Two-dimensional transition metal carbides (MXenes) have a unique structure, excellent electronic conductivity and a low Li+ diffusion barrier, and show potential for application in energy storage. Especially, MXenes can act as a conductive matrix to achieve excellent lithium storage performance. Herein, a Ti3C2Tx MXene/carbon nanotubes@red phosphorus (Ti3C2Tx/CNTs@P) nanohybrid with stable Ti–O–P bonds is fabricated. The CNTs are introduced into Ti3C2Tx to construct a conductive network, and then the Ti3C2Tx/CNTs are combined with P by a ball-milling method. In this process, the surface oxygen-containing functional groups of Ti3C2Tx interact with P, forming Ti–O–P bonds. Owing to the large capacity contribution of P, the conductive network and buffering role of Ti3C2Tx/CNTs, and the effect of the Ti–O–P bond, the Ti3C2Tx/CNTs@P nanohybrid exhibits a superior reversible capacity of 2598 mA h g−1 at 0.05C (1C = 2600 mA g−1, based on the active material P), excellent cycling stability (2078 mA h g−1 after 500 cycles) and superior rate capability (454 mA h g−1 at 30C). These results demonstrate that the Ti3C2Tx/CNTs@P nanohybrid offers fascinating potential for high-performance lithium-ion batteries.
研究领域:
材料科学
·
储能
·
纳米技术
·
电化学
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高影响因子
CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Yanhong Gu,Jianguo Zhao,Weiying Zhang,Haiwu Zheng,Laimei Liu,Wanping Chen
Sm and Ti co-doped BiFeO 3 (BFO) ceramics with Fe vacancies—Bi 0.86 Sm 0.14 FeO 3 , Bi 0.86 Sm 0.14 Fe 0.99 Ti 0.01 O 3 , and Bi 0.86 Sm 0.14 Fe 0.9 Ti 0.05 O 3 —were prepared by a solid-state method using a rapid liquid process. X-ray diffraction indicated that all samples exhibited a rhombohedral structure with a minor secondary phase. The structural transformation from a rhombohedral (space group: R 3 c ) to orthorhombic structure (space group: Pnma ) was observed in the sample of Bi 0.86 Sm 0.14 Fe 0.9 Ti 0.05 O 3 , which was also confirmed by Raman scattering spectra. Microstructural investigations with scanning electron microscopy showed a reduction in grain size with doping of BFO. The dielectric loss of Bi 0.86 Sm 0.14 Fe 0.9 Ti 0.05 O 3 reaches 0.05 (at 100 Hz) owing to the introduction of Ti and Fe vacancies. Ferroelectromagnetic measurements revealed the existence of ferroelectricity with a remanent polarization of 0.24 µC/cm 2 in Bi 0.86 Sm 0.14 FeO 3 , paraelectricity in Bi 0.86 Sm 0.14 Fe 0.9 Ti 0.05 O 3 , and weak ferromagnetism with a remanent magnetization of 0.2 emu/g in Bi 0.86 Sm 0.14 Fe 0.99 Ti 0.01 O 3 . The two composition-driven phases exist simultaneously and the different coercive field might be related to the jumps in the ferromagnetic hysteresis loops. Both the ferroelectric and magnetic properties were shown to correlate with the composition-driven structural evolution.
研究领域:
材料科学
·
物理学
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高影响因子
Materials
·
2026
·Vol. 19
·期 1
·194
·
IF 3.2
Yu Gao,Lipeng Wang,Kun Li,Yongbo Ji
In this work, V-Pt-Ti catalysts were synthesized employing impregnation (IP), precipitation (PC), sol-gel (SG), thermal decomposition (TD), and hydrothermal (HD) methods. A systematic study has been carried out to investigate impacts of various preparation methods on the performance of NH3selective catalytic oxidation (SCO) at temperatures from 150 °C to 450 °C. N2adsorption/desorption, XPS, XRD, H2-TPR, NH3-TPD, O2-TPD, SEM, TEM, and in situ DRIFTS were adopted to characterize the physico-chemical property of V-Pt-Ti catalysts. The results suggested that V-Pt-Ti catalysts synthesized by precipitation methods (denoted as VPT-PC) exhibited notably better SCO performance across the 150–450 °C temperature range compared with those produced by impregnation (IP), sol-gel (SG), thermal decomposition (TD), and hydrothermal (HD) methods. The outstanding performance of the VPT-PC catalyst could be ascribed to its larger surface area, higher relative contents of Pt0, V5+, and Oα, more abundant surface acid sites, and better redox property. In situ DRIFTS results suggested that NO2species could participate in NH3oxidation reaction on the surface of the VPT-PC catalyst, which was beneficial for improving the SCO activity.
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Mengyao Ma,Mengmeng Hu,Yifan Zhu,Renjie Wang,Tongliang Wang,Jinnan Gan,Runjing Cai,Nana Dai,Ting Gao,Qiaohuan Cheng,Qianqian Chen,Huijuan Ran,Fei Peng,Qingsong Zhu
In-situ growth of Ti-MOF@rGO improves dispersion, reduces agglomeration, and facilitates electron transport. • 0.3–400 μM linear range, 0.114 μM LOD (S/N=3), selective vs UA/AA, stable/reproducible. • Synergistic Ti-MOF@rGO boosts DA adsorption and electron transfer via 2e - /2H + redox. Electrochemical detection of dopamine (DA) is critically important for the diagnosis and monitoring of neurological disorders. In this study, we present a novel composite material, Ti-MOF@rGO, synthesized in-situ through the integration of titanium-based metal-organic frameworks (Ti-MOFs) with reduced graphene oxide (rGO). This hybrid material effectively combines the abundant redox-active sites of Ti-MOF with the excellent electrical conductivity and large specific surface area of rGO, thereby facilitating efficient charge transfer and enhanced DA adsorption. The Ti-MOF@10%rGO-modified glassy carbon electrode demonstrated outstanding electrocatalytic performance for DA oxidation, exhibiting a wide linear detection range of 0.3–400 μM and a low detection limit of 0.114 μM (S/N = 3). The sensor exhibited high selectivity against common interferents such as uric acid and ascorbic acid, along with excellent repeatability, reproducibility, and cycling stability. This work presents a promising strategy for the rational design of MOF-based composites and offers a robust platform for ultrasensitive and selective electrochemical biosensing applications.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Peng Gu,Yihe Fan,Jin Liu,Zhuang Cai,Jiannan Du,Yidong Song,Ying Dai,Guofeng Wang,Jinlong Zou
Size-controllable Cu 2 O nanocubes grow in-situ on AMXene via Oswald-ripening mechanism. • Cu 2 O induces MXene amorphization, generating edge-ligand unsaturated sites for HER. • The electron-rich Cu + boosts orbital hybridization for selective glycerol oxidation. • The catalyst requires only 1.31 V electrolyzer voltage with stability exceeding 150 h. Glycerol oxidation reaction (GOR) is a mild, sustainable pathway with great potential for producing high-value chemicals such as formic acid (FA). Integrating GOR with hydrogen evolution reaction (HER) circumvents the high energy barrier of anodic oxygen evolution in traditional water splitting. However, achieving selective C C bond cleavage in glycerol-to-FA conversion remains a major technical and scientific challenge. Here, via the Ostwald ripening mechanism, size-tunable cuprous oxide nanocubes are in-situ grown on amorphous MXene (Cu 2 O/AMXene), creating well-defined dual active sites with clear functional division: electron-rich Cu + for GOR and Ti sites for HER. The optimized Cu 2 O-0/AMXene (28 nm Cu 2 O) delivers a HER overpotential of 32 mV at 10 mA cm −2 , a GOR potential of 1.13 V at 10 mA cm −2 , and a full electrolyzer voltage of 1.31 V, while maintaining excellent catalytic efficiency after 150 h of continuous operation. Cu 2 O growth induces MXene amorphization, generating edge ligand-unsaturated Ti sites that enhance water dissociation for proton supply, while Ti 4+ promotes hydrogen spillover to transfer protons to Ti 3+ for efficient HER. Electron-rich Cu + forms asymmetric Ti-O-Cu interactions via electron donation from AMXene, enhancing orbital overlap with p orbitals of glycerol oxygen atoms for GOR. This electron-rich environment inhibits Cu + oxidation to Cu 2+ at high anodic potentials, stabilizing the active s - p hybrid configuration. This work also highlights the critical role of O-functional groups on AMXene and lattice O atoms in Cu 2 O for strengthening metal-support interactions. Download: Download high-res image (225KB) Download: Download full-size image
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DOI
PubMed
高影响因子
Advanced Science
·
2026
·
IF 14.1
Yanmin Liang,Hongyue Ma,Feier Bai,Jing Zhang,Yan Qi,Bing Shao
The interference of phospholipids in serum poses a critical bottleneck for nontargeted human biomonitoring of chemical hazards. Here, we report a Ti-doping strategy to activate adjacent Zr sites in a bimetallic Zr/Ti metal-organic framework (B-Zr/Ti MOF) for cooperative and efficient phospholipid removal. By precisely engineering the Ti content, the optimal B-Zr/Ti MOF achieves near-complete removal of major phospholipid subclasses while maintaining high recoveries (>50%) for over 500 diverse chemical hazards, even at trace levels (10 ng mL − 1 ). Combined XPS, FT-IR, and DFT calculations reveal that Ti incorporation modulates the local electronic environment, converting adjacent Zr sites into highly active Lewis acid centers that synergistically anchor phosphate headgroups via inner-sphere coordination. When integrated into a nontargeted LC-HRMS workflow, this material dramatically reduces matrix effects and expands detectable feature coverage. This work establishes bimetallic node engineering as a powerful strategy to overcome matrix interference in exposomics and precision biomonitoring.
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DOI
PubMed
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2026
·
IF 7.3
Jian-fa Jing,Shuai Wang,Yu-feng Guo,Feng Chen,Jinlai Zhang,Ling-zhi Yang,Guan-zhou Qiu
This study elucidates the influence of the CaO/MgO mass ratio and quaternary basicity (R 4 (CaO + MgO)/(SiO 2 /Al 2 O 3 )) on slag-phase evolution and element partitioning during electric-furnace smelting of pre-reduced vanadium titanomagnetite pellets. Thermodynamic calculations were employed to delineate a Ti-rich pseudobrookite-type slag domain that is amenable to subsequent acid-leaching processing for TiO 2 extraction. Smelting experiments under optimized conditions revealed that a balanced slag composition can simultaneously achieve high Ti enrichment in the slag and efficient Fe/V recovery in the metal phase, while suppressing the formation of CaTiO 3 . At 1600 °C with a holding time of 30 min and a carbon addition of 2 wt%, the combination of CaO/MgO = 0.5 and R 4 = 0.9 was identified as an optimal operating condition, yielding recovery rates of 99.82% for Fe, 93.12% for V, and 94.64% for TiO 2 . XRD and EPMA results show that the resulting slag is predominantly composed of anosovite, with subordinate diopside and magnesium titanium spinel, confirming the effective retention of Ti in the slag and the preferential partitioning of Fe and V into the metal phase. Collectively, these findings define a viable composition window for the design of acid-soluble titanium-bearing slags within the direct-reduction/electric-furnace processing route for vanadium titanomagnetite.
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高影响因子
VACUUM
·
2026
·
IF 4.3
Gongge Lin,Xinghong Zhang,Xinxin Ma
This study employed magnetron sputtering to deposit titanium selenide coatings on Ti-6Al-4V titanium alloy, aiming to improve wear resistance. By varying the polarity and magnitude of the bias voltage applied to the substrate surface, we identified the optimal process parameters for TiSe 2 formation. The results demonstrated that the coating surface hardness reached 16.0 GPa (increased by three times). In constant-load ball-on-disk friction tests, the friction coefficient decreased to 0.27 ± 0.041 with a reduced wear volume. This study provides a technical foundation for the preparation of titanium selenide coatings on titanium alloy surfaces.
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高影响因子
JOURNAL OF APPLIED ELECTROCHEMISTRY
·
2026
·Vol. 56
·期 5
·82
·
IF 3.7
Liu Yanyue,Guo Teng,Chu Yuanhong,Chen Shiguo,Li Zijiong
Aqueous zinc-ion batteries have emerged as a highly promising energy storage technologies due to their abundant resources, high safety, and environmental friendliness. However, the cycle stability of Aqueous zinc-ion batteries is severely constrained by zinc dendrite growth on the anode and accompanying side reactions in the electrolyte. Mitigating this effect is crucial for the large-scale application of zinc-ion batteries, and separator modification is regarded as an effective strategy to address these challenges. Here, a method of modifying the glass fiber composite separator with amino-functionalized MXene (Ti₃C₂Tₓ) is attempted to alleviate these problems. The modified Ti₃C₂Tₓ was uniformly loaded on the surface of glass fiber separator by vacuum filtration to fabricate the composite separator. Systematic characterization and electrochemical testing revealed that the composite separator with an optimal coating loading of 2 mg cm⁻² significantly enhanced battery performance. The cycle life of Zn//Zn symmetric cells were markedly extended at 5 mA cm⁻², and specifically, reached 250 h at 0.5 mA cm⁻², which is about 8 times longer than that of the unmodified glass fiber separator (~ 30 h). Furthermore, the Zn||MnO₂ all-cell based on this composite separator also exhibited a higher capacity retention rate after 1200 cycles compared to the blank separator group. This provides an effective research direction for the design of high-performance Aqueous zinc-ion batteries separators. Graphical abstract
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高影响因子
危险品化学品经营许可证（带存储）