ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yu He,Mengyao Zhao,Xiang Li,Weiliang Xiong,Guosheng Shao,Peng Zhang,Yige Zhao
Two-dimensional van der Waals heterojunctions (2D vdWHs) have garnered significant interest owing to their ability of efficiently interfacial electron transfer, tunable band structures, and high structural stability. Nevertheless, the utilization of 2D vdWHs as multifunctional electrocatalysts is still rarely explored. In this work, we synthesized a 30% FeCo LDH/TiN/NC electrocatalyst via high-temperature solid-state and hydrothermal methods, featuring a 2D vdWH architecture in which FeCo LDH nanosheets are uniformly anchored onto the TiN/NC substrate. The resulting electrocatalyst exhibits remarkable trifunctional activity and stability for the oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER), comparable to those of commercial catalysts. The superior electrocatalytic performance is attributed to the interfacial electron redistribution, in which the electron transfer from TiN/NC to FeCo LDH enhances charge transfer kinetics and increases the number of active sites during electrochemical reactions. Moreover, the 30% FeCo LDH/TiN/NC electrocatalyst shows great promise for applications in both zinc-air batteries (ZABs) and overall water splitting. This study underscores the potential of 2D vdWHs and offers valuable insights for the design of advanced multifunctional electrocatalysts.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能量存储与转换
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2016
·Vol. 16
·期 3
·2677-2681
·
IF 1.338
Yang Jing,Liu Huiwen,Yu Honglin,Zou Xiaoxuan,Jing Bo,Dai Wenli
The rheological behavior of a novel, binary organic–inorganic hybrid consisting of an ultra-low Tg tin fluorophosphate glass (Pglass) and polycarbonate (PC) was investigated using oscillatory rheometry. It was found that the complex viscosity of the hybrid showed Pglass content
dependence. Under low Pglass content (10∼30%), the complex viscosity of the hybrid was lower than that of pure PC. While the complex viscosity was dramatically increased and higher than that of pure PC with the content of Pglass above 30%. This phenomenon was particularly remarkable at
low frequencies. Besides, with the addition of Pglass the hybrid material exhibited shear-thinning behavior and the shear-thinning characteristics became more obvious with the enhancement of the Pglass content, indicating the presence of nonlinear chemical and physical interactions between
the hybrid components. Differential scanning calorimetry (DSC) measurements revealed that increasing the content of Pglass caused a decrease of the glass transition temperature (Tg) of the hybrids, suggesting that Pglass was acting as a macromolecular plasticizer for the PC. The microstructure
of the Pglass in the hybrid material was characterized by scanning electron microscopy (SEM). The results showed that the Pglass were dispersed as micro- and nano-bead in the continuous phase of PC and the Pglass appeared aggregation partly with the increase of the Pglass content. This contribution
was anticipated to be a guideline for the processing of this promising new class of hybrid materials.
研究领域:
材料科学
·
化学工程
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DOI
PubMed
高影响因子
CHEMISTRY OF MATERIALS
·
2020
·
IF 9.567
Shuang Li,Xunuo Lou,Xiaotong Li,Jian Zhang,Di Li,Houquan Deng,Jizi Liu,Guodong Tang
Here, we report a remarkable high-average figure of merit (ZT) of 0.73 with the peak ZT of 1.9 in bulk polycrystalline tin selenide (SnSe), generating a high energy conversion efficiency of ∼12.5%. The remarkable high thermoelectric performance results from the enhanced electrical transport properties and reduced lattice thermal conductivity through Schottky vacancies and endotaxial nanostructuring. High angle annular dark field scanning transmission electron microscopy identified amounts of Schottky vacancies and endotaxial PbSe nanoprecipitates present in the SnSe matrix. Schottky vacancies and endotaxial PbSe nanostructures contribute to low lattice thermal conductivity by establishing strong phonon scattering centers. Consequently, an extreme low lattice thermal conductivity of 0.23 W m–1 K–1 was achieved at 873 K. Schottky vacancies lead to the increase in carrier concentration, contributing to the enhancement of electrical conductivity and power factor (PF). The maximum PF reached 7.5 μW cm–1 K–2 at 873 K. In addition to the high peak ZT, a high average ZT and outstanding thermoelectric conversion efficiency were realized, which ensured its huge potential in practical application. This work provides a new strategy for enhancing thermoelectric performance and designing prospective high-performance thermoelectric materials.
研究领域:
材料科学
·
热电学
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DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2022
·
IF 5.723
Yulin Li,Xiangyunxiu Meng,Ruiwen Luo,Haonan Zhou,Shuyan Lu,Shuning Yu,Peng Bai,Xianghai Guo,Jiafei Lyu
Glucose isomerization into fructose is the dominant reaction path for biomass conversion . Lewis acidic aluminum or tin were firstly impregnated in microporous UiO-66 for remarkably enhanced glucose isomerization. Al@UiO-66 achieved 37.5% fructose yield with a 63.9% selectivity with no obvious leaching of aluminum while Sn@UiO-66 failed the leaching test. The 27 Al NMR and XPS spectra of Al@UiO-66 demonstrated the complex environment of aluminum in UiO-66 involving the chains of aluminum octahedra and the Al–O–C structure, which contributed to the enhanced Lewis acidity and promoted performance of the catalyst.
研究领域:
化学工程
·
催化
·
材料科学
·
生物化学
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DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Jiang Haotian,Zhang Jie,Li Wei
The decoration of noble-metal remains an effective and general strategy to rejuvenate “old” sensing materials for targeted gases. Herein, gold was loaded onto electrospun SnO 2 nanofibers by a simple impregnation route and the resulting hybrids were employed to detect nitric oxide (NO). XRD, TEM, XPS and elemental mapping corroborated that metallic Au clusters were successfully anchored on the fiber surface. Owing to the spill-over effect, these clusters supply additional active sites and chemisorbed oxygen. Gas-sensing measurements revealed that, even at a relatively low operating temperature, the Au-decorated SnO 2 nanofibers delivered a striking response of 37.3 toward 200 ppb NO, whereas negligible cross-responses were observed to typical interferents in exhaled breath. Moreover, the sensor exhibited excellent repeatability and long-term stability. These results demonstrate the remarkable potential of Au surface functionalization for boosting the NO-sensing performance of SnO 2 nanofibers.
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DOI
高影响因子
International Journal of Nanomedicine
·
2022
·
IF 7.033
Yi Guan,Nan Liu,Yan Yu,Qiang Zhou,Meiyu Chang,Yongheng Wang,Sanqiao Yao
Purpose The objective of this study was to evaluate and compare the histopathological implications of silica nanoparticles (Nano-SiO 2 ) and indium-tin oxide nanoparticles (Nano-ITO), in vivo. Methods Male Sprague-Dawley rats were exposed to Nano-SiO 2 (50 mg/kg) and Nano-ITO (6 mg/kg) by a single intratracheal instillation, respectively. Broncho-alveolar lavage fluid (BALF) and lung tissue were obtained at 7, 14, 28, and 56 days post exposure for analysis of BALF inflammatory factors, total protein, and for lung tissue pathology. Histopathological and ultrastructural change in lungs were investigated by hematoxylin and eosin, Masson’s trichrome, sirius red staining, periodic acid Schiff stain, and transmission electron microscopy. The expression of SP-A, collagen type I and III in lung tissue was determined by immunohistochemistry and ELISA. Results The rats in both models exhibited obvious collagen fibrosis and the severity of the lung injury increased with time after exposure to respective dosage increased. Several parameters of pulmonary inflammation and fibrosis significantly increased in both groups, which was reflected by increased LDH activity, total proteins, TNF-α, and IL-6 levels in BALF, and confirmed by histopathological examination. The results also showed that the two models exhibited different features. Exposure to Nano-ITO caused persistent chronic lung inflammation, illustrated by the infiltration of a large amount of enlarged and foamy macrophages and neutrophils into the lung parenchyma. In Nano-SiO 2 exposed rat lung tissue, granulomatous inflammation was most prominent followed by progressive and massive fibrotic nodules. Compared with the Nano-SiO 2 rats, Nano-ITO exposed rats exhibited significantly severe pulmonary alveolar proteinosis (PAP) pathological changes, lower fibrosis, and higher levels of inflammatory biomarkers. However, Nano-SiO 2 exposed rats had greater fibrosis pathological changes and more severe granulomas than Nano-ITO exposed rats. Conclusion This study suggests that the Nano-SiO 2 -induced model has greater value in research into granulomas and fibrosis, while the Nano-ITO-induced model has greater repeatability in area of PAP.
研究领域:
毒理学
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病理学
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纳米技术
·
呼吸医学
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DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Mi Lu,Yanyan Tian,Youpeng Li,Wanlu Li,Xiaodong Zheng,Bing Huang
A kind of nanosized, spherical-like Sn-Ni alloy composite was synthesized by spray drying the ball-milled mixture of SnO 2 , NiO and Super P carbon to obtain the precursor, then the metal oxides were reduced by carbon at 900 °C for 2 hrs. The morphology of the sample shown by scanning electronic spectroscopy was spherical-like particle with a diameter below 200 nm. X-ray diffraction pattern shows that the sample contains the alloy phase of Ni 3 Sn 4 , Ni 2 Sn 2 and Ni 3 Sn, element phase of Ni and Sn, and compound phase SnO 2 . The charge/discharge test shows that the alloy shows a reversible capacity of 571.1mAh/g with capacity retention of 78.6% after 20 charge-discharge cycles. The improved performance was ascribed to the lower particle size, the higher contents of alloy phase, the binder styrene butadiene rubber to buffer the expansion of the alloy and the improved electric contact between active material and copper current collector.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
金属合金
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DOI
高影响因子
Sustainable Energy & Fuels
·
2017
·Vol. 1
·期 9
·1944-1949
·
IF 0
Sheng Huang,Chao Meng,Min Xiao,Shan Ren,Shuanjin Wang,Dongmei Han,Yuning Li,Yuezhong Meng
Tin phosphide (Sn4P3) combined with the good conductivity of tin (Sn) and high capacity of phosphorus has been reported to be a potential anode material for the sodium ion battery (SIB). However, the preparation of Sn4P3 is limited to ball-milling and compositing with carbon materials. The novel and detailed structure of Sn4P3 itself has so far not been revealed. In this research, the multi-shell Sn4P3 nano-structure was obtained, for the first time, using a simple and general low temperature solvothermal method. The multi-shell structure with a larger specific surface area and interlayer space endows this new anode material with a short cut pathway for sodium ion diffusion and a buffer space for volume expansion during sodiation, thus avoiding electrode pulverization and improving the cycling performance of the SIB. The as-prepared multi-shell Sn4P3 delivers an excellent specific capacity of 770 mAh g−1 with capacity retention of 96% after 50 cycles at the current density of 50 mA g−1, demonstrating the superiority of structure optimization in SIB anode preparation.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机化学
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DOI
CERAMICS INTERNATIONAL
·
2020
·Vol. 47
·期 5
·5918-5928
·
IF 3.83
Yu Zhao,Tianqi Zhang,Liaoyuan Chen,Tianbiao Yu,Jiayu Sun,Chuang Guan
In situ Ti(C, N), ring phase, and multi-phase enhanced Ni204-based alloy coating were prepared by adding various Ti/C/TiN ratios particles. The effects of the reinforcement phase on the microstructure, microhardness , tribological property, and microstructure characteristics at the interface between the coating and substrate were investigated. The results show that the coatings with a 5:1 mass fraction ratio of TiN/C exhibits the highest microhardness , which is 3.78 times higher than that of the original Ni204 coating. While, the coating with 21:7:2 mass fraction ratio of TiN/Ti/C exhibits the lowest friction coefficient , which is 4.44 times smaller than that of the original Ni204 coating. The addition of Ti and C particles promotes the precipitation of ring phase and carbides , reduces ceramic agglomeration, alleviates the floating of ceramic particles, and improves the bonding strength of reinforcement phases. Owing to the good mutual solubility among Fe, Ni, and, Cr elements, the diffusion happened at the interface between the coating and substrate.
研究领域:
材料科学
·
表面工程
·
金属学与金属工艺
·
机械工程
·
复合材料
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2013
·
IF 3.473
Manhong Liu,Qiang Bai,Hailian Xiao,Yanyan Liu,Jun Zhao,William W. Yu
Colloidal platinum–ruthenium bimetallic nanoparticles with 2.3 nm were synthesized in solution and then immobilized on tin dioxide powder to make a supported nanocatalyst (Pt–Ru/SnO 2 ). The immobilized bimetallic nanoparticles had the same size and size distribution as the solution dispersed ones. Selective hydrogenation of o -chloronitrobenzene to o -chloroaniline was performed over the as-prepared Pt–Ru/SnO 2 nanocatalyst without using any solvent; 99.5% selectivity to o -chloroaniline at ∼100% conversion was achieved.
研究领域:
催化化学
·
纳米材料
·
有机合成
·
绿色化学
·
应用化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yue Yu,Dan Cao,Lingang Yang,Haibiao Guan,Zehao Liu,Changlong Liu,Xiaoshuang Chen,Haibo Shu
Two-dimensional (2D) layered group-IV monochalcogenides with large surface-to-volume ratio and high surface activity make that their structural and optoelectronic properties are sensitive to air oxidation. Here, we report the utilization of oxidation-induced gradient doping to modulate electronic structures and optoelectronic properties of 2D group-IV monochalcogenides by using SnS nanoplates grown by physical vapor deposition as a model system. By a precise control of oxidation time and temperature, the structural transition from SnS to SnSO x could be driven by the layer-by-layer oxygen doping and intercalation. The resulting SnSO x with a graded narrowing bandgap exhibits the enhanced optical absorption and photocurrent, leading to the fabricated SnSO x photodetector with remarkable photoresponsivity and fast response speed (<64 μs) at a broadband spectrum range of 520–1550 nm. The peak responsivity (7294 A/W) and detectivity (9.54 × 10 9 Jones) of SnSO x device are at least two orders of magnitude larger than those of SnS photodetector. Moreover, its photodetection performance can be competed with state-of-the-art of 2D materials-based photodetectors. This work suggests that the air oxidation could be utilized as an efficient strategy to engineer the electronic and optical properties of SnS and other 2D group-IV monochalcogenides for the development of high-performance broadband photodetectors.
研究领域:
材料科学
·
光电技术
·
纳米科技
✓ 已验证
DOI
高影响因子
Advanced Materials Technologies
·
2024
·Vol. 9
·期 9
·2302029
·
IF 6.4
Can Gao,Xinyao Wang,Qingyun Yang,Xiaochun Wang,Chunxiao Gao,Xizhe Liu
Hybrid tin halides with formamidinium cations become a promising candidate for eco-friendly solar cells, which achieves the best photovoltaic performance among various lead-free perovskite solar cells (PSCs). Unfortunately, the low quality of perovskite layers and the oxidation of Sn 2+ ions degrade the performance of devices, leading to an obviously lower power conversion efficiency (PCE) compare to hybrid lead halides. Additive engineering is a facile strategy for improving the quality of perovskite layers. In this work, the 2-aminopyrazine (APZ) additive is investigated for depositing FA 0.8 PEA 0.2 SnI 2.8 Br 0.2 layers, and corresponding PSCs are examined. It is found that the melting point of APZ additives drops below the annealing temperature of perovskite layers by the intermolecular interaction with formamidinium iodide (FAI). The melt phase at the grain boundaries encourages the diffusion of ions in the annealing process, leading to an improved quality of perovskite layers. And the formation of APZ-SnI 2 complex also inhibits the oxidation of Sn 2+ ions. Consequently, the defect density and the recombination are significantly reduced in PSCs, resulting in an increase of PCEs from 11.4% to 13.0% and a simultaneous improvement of device stability. This work demonstrates a strategy for improving tin-based PSCs based on melt assisted annealing and coordination interaction.
研究领域:
材料科学
·
可再生能源
·
太阳能电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）