JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2015
·Vol. 98
·期 5
·1423-1428
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IF 2.61
Mingsheng Tan,Zhiyong Wang,Junjun Peng,Xianbo Jin
Highly crystalline hexagonal titanium disulfide (TiS 2 ) sheets were synthesized at the gas/liquid interface between TiCl 4 vapor and the dissolved Na 2 S in equimolar NaCl–KCl melts at temperatures between 700°C and 850°C. TiS 2 sheets with sizes of about 10–20 μm and thicknesses of about 50–200 nm have been collected at 700°C–750°C, and much bigger (50–100 μm in sizes) and thicker (1–5 μm in thickness) TiS 2 sheets were obtained at 850°C. The mass transfer preferential growth of an interphase layer and the thermodynamically preferential enlargement of the (001) plane of the hexagonal TiS 2 crystal were thought to have led the formation of large and thin TiS 2 sheets in this proposed gas/liquid interface process. Due to the density difference, the ripe TiS 2 sheets sank into the melt allowing the continuing preparation of TiS 2 sheets. These TiS 2 sheets could spontaneously assemble to TiS 2 membranes or be ultrasonically exfoliated to few-layer TiS 2 sheets with thicknesses less than 5 nm. The presented approach should be potentially extendable to the synthesis of large and thin sheets of other layered metal dichalcogenides in large scale.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Xiaorong Gan,Huimin Zhao,Xie Quan,Yaobin Zhang
An ultrasensitive electrochemical sensor for Cu 2+ detection was first developed based on p-aminothiophenol (PATP) anchored on the surface of Au nanoparticle-decorated hydrogen-incorporated TiS 2 nanosheets (PATP/Au-H x TiS 2 ). In the synthesis process, the plane edges of H x TiS 2 nanosheets offered Au nanoparticles with incubation sites for the heterogeneous nucleation and growth. On the other hand, Au nanoparticles were not only served as an excellent electrical catalyst to facilitate electron transfer and as a substrate for loading PATP molecules by Au-S valent bonds, but also could effectively avoid the aggregation of H x TiS 2 nanosheets . Due to the synergetic effects from Au-H x TiS 2 for signal amplification, the as-formed electrochemical sensor exhibited highly sensitive and selective assaying of Cu 2+ with a detection limit of 90 pM (3σ) and a linear range from 0.2 nM to 5 μM, under optimal conditions. Its specificity was ascribed to the strong coordination interaction between Cu 2+ and N atoms of imine moieties in PATP after electrochemical oxidation .
研究领域:
分析化学
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纳米科技
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Chaojie Pang,Jiage Liu,Rui Peng,Yingying Guo,Zhiyong Li,Huiyong Wang
Titanium disulfide nanosheets (TiS 2 NSs) have attracted considerable research interest due to their eco-friendliness and outstanding electrical transport properties. However, the large scale preparation of TiS 2 NSs usually is plagued by the employ of poisonous solvents and low production. Herein, we develop a green, highly efficient and scalable tactic to exfoliate bulk TiS 2 powders in aqueous ionic liquids solutions under ambient conditions. This result shows that the exfoliation yield can reach 57.6 %, which surpasses the most values for the liquid-phase exfoliation of TiS 2 reported in literatures. The thickness of TiS 2 NSs is mainly in the range of 1 nm to 2 nm, and the lateral dimension is up to a few hundreds of nanometers. The molecular geometry and anionic alkalinity of the ionic liquids play key roles in the delamination and stability of TiS 2 NSs. In addition, TiS 2 NSs have been used as catalysts in the electrocatalytic CO 2 to CO conversion with the faradaic efficiency of 68.7 %, which is six times that by the bulk TiS 2 powder. Thus, the liquid phase delamination approach reported in this work has a great potential in manufacturing 2D layer materials for high activity electrocatalysis.
研究领域:
材料科学
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电化学
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纳米技术
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Yanwei Sun,Chunshan Song,Xinwen Guo,Sungwon Hong,Jungkyu Choi,Yi Liu
Metal-organic framework (MOF) membranes have received increasing attention due to their unprecedented potential for energy-efficient gas separation. Compared with other MOF materials (like ZIF), fabrication and microstructural manipulation of high-performance Ti-MOF-based membranes, although being very attractive due to their excellent chemical and thermal stability, remained relatively less investigated due to the limitations of available titanium sources and heating modes. In this study, different Ti sources (TPOT, TiS 2 , and MXene) and heating modes (conventional heating, multi-mode microwave heating, and single-mode microwave heating) were examined for the preparation of NH 2 -MIL-125 membranes showing diverse microstructures and gas separation performances. The present work revealed that for the first time, MXene , the new two-dimensional Ti carbide , could be used as Ti source for synthesizing MOF membranes. The best performing NH 2 -MIL-125 membranes, which were obtained with TiS 2 as the metal source under single-mode microwave heating, exhibited the highest H 2 /CO 2 selectivity (ca. 17.2) as well as considerable H 2 permeance (1.7 × 10 −7 mol m −2 s −1 Pa −1 ), owing to an enhanced non-thermal effect of single-mode microwave heating and balanced dissolution rate of TiS 2 .
研究领域:
材料科学
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膜分离技术
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化学工程
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纳米材料
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气体分离
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可持续能源
✓ 已验证
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Qinjuan Ren,Haofan Wu,Ya Zhang,Jing Dai,Zhiqiang Chang,Jianfang Nie,Bingfang Wang,Yin Fang
The precise modulation of electrical activity in specific neuronal populations is paramount for rectifying abnormal neurological functions and is a critical element in the therapeutic arsenal for neurological disorders. However, achieving a balance between minimal invasiveness and robust neuroprotection poses a considerable challenge. Herein, we present a nanoneuromodulation strategy integrating neuroprotective features to effectively address epilepsy with minimal invasiveness and enable wireless functionality. Strategically engineered nanotransducer, adorned with platinum (Pt) decoration with titanium disulfide (TiS2) (TiS2/Pt), enables precise modulation of neuronal electrical activity in vitro and in vivo, ensuring exceptional temporal fidelity under millisecond-precision near-infrared (NIR) light pulses irradiation. Concurrently, TiS2/Pt showcase a pronounced enhancement in enzyme-mimicking activity, offering a robust defense against oxidative neurological injury in vitro. Nanotransducer-enabled wireless neuromodulation with biocatalytic neuroprotective capacity is highly effective in alleviating epileptic high-frequency neural activity and diminishing oxidative stress levels, thereby restoring redox equilibrium. This integrated therapeutic approach reduces the severity of epilepsy, demonstrating minimal invasiveness and obviating the requirements for genetic manipulation and optical fiber implantation, while providing an alternative avenue for neurological disorder treatment.
研究领域:
神经科学
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纳米技术
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治疗学
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生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Liyang Zhou,Aixue Bi,Xu Yang,Feng Xue,Shengui Ju
Titanium-based lithium-ion sieves (LISs) have attracted considerable attention because of their superior adsorption capacity and cycling stability in lithium ion extraction. In this paper, an S-doped H 2 TiO 3 -ferrite ion sieve was successfully synthesized through co-precipitation scheme. The recycling problem of lithium ion sieve powder was effectively solved by utilizing its magnetic separation property. LTSO-Ferrite was prepared in one step using a high-temperature solid-phase method, with an optimal molar ratio of FeCl 2 : TiS 2 : TiO 2 = 0.2: 0.2: 1. The adsorption capacity of S-doped H 2 TiO 3 -Ferrite (HTSO-Ferrite) reached 43.02 mg/g, and the magnetization value was 4.81 emu/g. The adsorption energy and structure of Li + on LTSO-Ferrite were determined using density functional theory (DFT) to assess the feasibility of lithium absorption. The adsorption behavior of LTSO-Ferrite toward Li + followed the Langmuir isotherm and pseudo-second-order kinetic models, indicating that the adsorption was endothermic and spontaneous. LTSO-Ferrite exhibited good selectivity for heteroatoms in simulated brine. Magnetic recovery rate remained at 98 % with an adsorption capacity of 36.16 mg/g after five cycles, which is 84 % of its maximum adsorption capacity. LTSO-Ferrite exhibited magnetic separation properties, offering a promising approach for developing lithium adsorbents for extraction from unsalted lake brine.
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
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·Vol. 46
·期 6
·118066
·
IF 6.2
Rui-Hua Chen,Suniya Siddique,Hua-Jing Zhang,Ning Chen,Zhuo-Ming Xu,Zi-Long Zhang,Yue-Xing Chen,Zhuang-Hao Zheng,Fu Li
Herein, a Ti/Cu co-doping strategy is employed in Bi 2 SeS 2 to optimize its electrical and thermal transport properties through carrier regulation and microstructure modulation. The Ti/Cu co-doped Bi 2 SeS 2 samples were synthesized by mechanical alloying followed by spark plasma sintering. It is found that the co-doping boosts electrical conductivity while preserving a moderate Seebeck coefficient of 150–200 μV K −1 . This yields a high power factor of 5.5 μW cm −1 K −2 at 773 K. Moreover, the lattice thermal conductivity is reduced to ∼0.25 W m −1 K −1 , primarily due to effective phonon scattering induced by lattice strain and point defects. Finally, a peak zT of ∼0.80 is achieved at 773 K in Bi 1.96 Ti 0.04 SeS 2 -1 %Cu, surpassing the solely Cu-doped and Ti-doped counterparts by ∼22 % and 40 %, respectively. These findings reveal that multi-element doping is an effective approach for tailoring both charge and phonon transport, providing valuable insights for the design of advanced thermoelectric materials.
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Zhen Chen,Yan Wang,Zebing Ning,Qi Huang,Jia Zhou,Faquan Yu
Conjugated microporous polymers (CMPs) rank among the most promising materials for sustainable lithium-ion batteries (LIBs) in terms of their tunable chemical structures and designable electrochemical performance. Herein, a CMP of poly(anthraquinone-co-hexaazatriphenylene) (PAQ-HATN) was synthesized by combining anthraquinone (AQ) with a highly active hexaazatriphenylene (HATN) group, which is endowed with abundant redox-active groups, high specific surface area, and insolubility in an electrolyte. Further, to address the existing problems of PAQ-HATN, including poor rate performance, low conductivity, and structural instability, the strategy through the integration of an organic polymer (PAQ-HATN) with inorganic material (TiS2) was used. The prepared composite as a cathode material (PAQ-HATN@TiS2) achieves improved conductivity and effective utilization of the redox activity sites. As expected, PAQ-HATN@TiS2 exhibits high initial capacity (347.6 mA h g–1 at 25 mA g–1), good rate performance (114.8 mA h g–1 at 1000 mA g–1), and long cycle stability (157.4 mA h g–1 at 800 mA g–1 and 1000th cycle), indicating the PAQ-HATN@TiS2 compound is a potential cathode for energy storage.
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
高影响因子
Advanced Energy Materials
·
2024
·Vol. 14
·期 25
·2401156
·
IF 24.4
Zhongliang Ma,Jiahe Zang,Wenqiang Hu,Qisen Wang,Zhonghui Sun,Fang Fang,Yun Song,Dalin Sun
2LiBH 4 −MgH 2 (Li-RHC) is a potential hydrogen storage candidate with a capacity of 11.5 wt.%. However, its further application is severely limited by the long nucleation induction period and poor reversibility of end-product. Unlike the traditional focus on the catalytical role of cation, herein, a new perspective of previously ignored anion tuning has been proposed, in which S 2− bridges the reversible conversion between Li 2 S and MgS during de-/hydrogenation cycling of Li-RHC. Such conversion not only enhances the migration of Li + , leading to the rapid destabilization of B─H bonds without obvious nucleation period of MgB 2 , but also improves the cycling stability of Li-RHC with capacity retention over 90% even after 50 cycles. The universal of this anion modulation has been verified, along with the matching criteria of the corresponding transition metal cation. The results highlight the contribution of anion, push anion modulation from back to stage and eventually broaden the selection of catalysts for Li-RHC.
研究领域:
材料科学
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氢能存储
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产品关联
DOI
高影响因子
CHEMICAL PAPERS
·
2019
·Vol. 73
·期 10
·2583-2589
·
IF 1.246
Zhao Li-Ping,Liu Gang,Zhang Peng,Sun Li-Qun,Cong Li-Na,Lu Wei,Sun Qi-Qi,Xie Hai-Ming,Wang Hong-Yu
Titanium disulfide (TiS 2 ) was adopted as a negative electrode material for the asymmetric sodium-ion supercapattery of TiS 2 /activated carbon using Na + -based organic electrolytes. This type of supercapattery possesses a working voltage as high as 3 V. The physical properties of the negative electrode were characterized by X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical performance tests revealed that the supercapattery had a relatively high rate performance and good cycle stability, displaying 77% capacity retention after 1000 cycles at a current density of 0.2 A g −1 .
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Mengyuan Jin,Zhuo Yang,Sheng Cheng,Yanhui Guo
Hydroborates have attracted extensive attention as a promising class of solid electrolytes for all-solid-state batteries. A conjuncto-hydroborate of Na4B20H18 is successfully developed and exhibits significantly promoted ionic conductivity and electrochemical stability compared to its monomer form of Na2B10H10. Moreover, the anion-mixing method is implemented and the mixed-anion electrolyte of Na4B20H18-3Na2B12H12 achieves an enhanced ionic conductivity exceeding 0.22 mS cm–1 at 25 °C, a remarkable Na-ion transference number up to 0.921 and an electrochemical stability window of 3.45 V vs Na+/Na at room temperature. Meanwhile, Na4B20H18-3Na2B12H12 also has remarkable stability against the Na electrode, and an all-solid-state battery with Na metal anode, TiS2 cathode, and Na4B20H18–3Na2B12H12 electrolyte delivers outstanding capacity retention of 92% after 50 cycles at 0.1C.
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 ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Chongyang Zhou,Han Sun,Qian Wang,Jakob B. Grinderslev,Dan Liu,Yigang Yan,Torben R. Jensen
Designing solid electrolytes for all-solid-state lithium batteries that can be compatible with high-voltage cathodes is challenging. Here we report that the nanocomposite Li 2 B 12 H 12 -Al 2 O 3 mechano-chemically treated for 120 h achieves an electrochemical stability window up to ∼ 3.8 V owing to the interfacial interaction via B-O bonds and a high lithium ionic conductivity , σ(Li + ) = 2.73 × 10 −5 S cm −1 at 30 °C. Moreover, this electrolyte shows high compatibility with the lithium metal anode as demonstrated by stable Li plating/stripping for 300 cycles. These electrolyte properties enable the first demonstration of a 3.8 V all-solid-state battery In 1.3 Li 0.3 |Li 2 B 12 H 12 -Al 2 O 3 (25 vol%)|LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) operating for 120 cycles with a rate of 0.2 C and at 30 °C, with a reversible specific capacity of 77.5 mAh g −1 and Coulombic efficiency of 99.8 %. The results demonstrate the potential of hydroborates as electrolyte for all-solid-state lithium batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）