CERAMICS INTERNATIONAL
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2019
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IF 3.45
Zonglin Lv,Yalin Qin,Yongcheng Zhang,Jingjing Fu,Chaojing Lu
To date there is no report on the photoluminescence property in Pr 3+ /Yb 3+ co-doped or Pr 3+ single doped ferroelectrics Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 , abbreviated as PMN-PT. This letter presents the efficient upconversion (UC) luminescence in 0.75PMN-0.25PT:1.5%Pr/ y Yb transparent ceramics together with luminescence mechanism. When the transparent ceramics were excited by 980 nm laser, strong visible UC emissions at 491, 529, 539, 623, 649, 685, 710 and 737 nm were detected, besides strong near-infrared down-conversion emissions of Pr 3+ at 1061 nm and of Yb 3+ around 1006 nm. The visible UC emission was found to be a two-photon process and sensitized by Yb 3+ . The intensities of the visible UC emissions saturate at higher pump power above 1.65 W when the Yb 3+ concentration y ≥ 3%. The intensity saturation results from the depletion of ground state population and reverse energy transfer in cross-relaxation way. Relative to the intensities of the red emissions, those of the blue-green emissions decrease remarkably as the Yb 3+ content increases. This interesting phenomenon can be attributed to the higher local symmetry of Pr 3+ sites in the ceramics of higher Yb 3+ content. The various photoluminescence properties and excellent ferroelectric properties make our Pr 3+ /Yb 3+ -doped transparent ceramics promising multifunctional optical luminescence materials.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
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IF 9.229
Xiaowei Li,Xing Shen,Junmei Zhao,Yang Yang,Qiangqiang Zhang,Feixiang Ding,Miao Han,Chunliu Xu,Chao Yang,Huizhou Liu,Yong-Sheng Hu
Na-ion batteries (NIBs) have been considered as potential candidates for large-scale energy storage, where O3-type Na-based layered oxide cathodes have attracted great attention due to their high capacity and low cost. However, O3-NaxTMO2 materials still suffer from insufficient air stability, which could lead to deteriorative electrochemical properties and thus hinder their practical application. In this work, a series of Al-doped O3-NaFe(1/3–x)Ni1/3Mn1/3AlxO2 cathodes prepared by a co-precipitation method were investigated to enhance their electrochemical performance and air stability through stabilizing their structural and interface chemical properties. The Al-doped O3-NaFe(1/3–0.01)Ni1/3Mn1/3Al0.01O2 (NFNMA0.01) cathode delivers a comparable capacity of 138 mAh g–1 and keeps a capacity retention of 85.88% after 50 cycles at 0.2 C, while the undoped O3-NaFe1/3Ni1/3Mn1/3O2 (NFNM) can only keep a capacity retention of 71.02%, although with an initial capacity of 141 mAh g–1 at 0.2 C. For the air stability, the capacity decay rates are 58.87 and 5.07% for the undoped NFNM and Al-doped NFNMA0.01 after the air exposure for 30 days, respectively. The greatly decaying electrochemical performance could be due to the formation of carbonates during air exposure, which can be efficiently suppressed by Al doping. The doped Al3+ has been confirmed to be inserted into the NFNM crystal lattice, inducing the reduced values of lattice parameters a and c due to the smaller ionic radius of Al3+ (53.5 pm) vs Fe3+ (55.0 pm). This study demonstrates that Al doping plays an important role in the air stability and cycling stability for layered cathode materials, which offers an efficient strategy to optimize the material design for their practical application in NIBs.
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CANADIAN JOURNAL OF CHEMICAL ENGINEERING
·
2025
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IF 1.9
Yu-cheng Jiang,Bao-guang Zhu,Xiang-li Long
The oxidation of 1-(4-chlorophenyl)-pyrazolidin-3-one to 1-(4-chlorophenyl)-1H- pyrazol-3-ol by air can be accelerated by the Co(II)@AC catalyst prepared by loading Co(II) on activated carbon with wet impregnation method. ZnCl 2 solution has been used to treat activated carbon to ameliorate the catalytic ability of Co(II)@AC catalyst. The experiments indicate that the optimal catalyst is made by immersing activated carbon in 0.7 mol/L ZnCl 2 solution at 50°C for 6 h with a liquid/solid ratio of 30/1 (mL/g) followed being calcined at 700°C for 5 h at a heating rate of 5°C/min under N 2 protection. The 1-(4-chlorophenyl)-1H-pyrazol-3-ol concentration catalyzed by the catalyst loaded on the best carbon reaches 0.01953 kg/L, which is 27.56% higher than that catalyzed by the catalyst loaded on the original carbon. The characterization results manifest that the modification with ZnCl 2 enriches the porous structure and increases the acidic groups on the surface of activated carbon. The conversion of 1-(4-chlorophenyl)-pyrazolidin-3-one is mainly determined by the physical structure of the activated carbon while the selectivity to 1-(4-chlorophenyl)-1H- pyrazol-3-ol is largely affected by the chemical characteristics of the activated carbon.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Shanhu Wang,Jiachang Bi,Shuya Liu,Jiyang Xie,Yihan Lei,Zihao Lin,Yang He,Hao Fan,Jiayi Qin,Wenyan Zha,Sheng'an Yang,Ji Ma,Hui Zhang,Qingming Chen,Jiangnan Li,Yanwei Cao,Changjian Li,Wanbiao Hu,Liang Wu
Self-assembled nanocomposites typically form through the phase separation of immiscible components, yet controllable synthesis with tailored functionalities remains challenging. Here, we demonstrate a substrate-directed self-assembled 2-(1-3)-structured nanocomposite via topotactic phase separation, preserving the crystallographic orientation from the substrate. It comprises a horizontal antiferromagnetic (AFM) rocksalt layer (2) at the substrate and vertical rocksalt nanopillars (1) embedded in a ferrimagnetic (FiM) spinel matrix (3). The nanopillars arise from kinetic trapping of late-arriving rocksalt species unable to diffuse through the growing spinel layer, forming “frozen diffusion channels” under continuous pulsed laser deposition. Importantly, the comparable magnitudes of AFM anisotropy and AFM-FiM interfacial exchange coupling enable two phenomena: switching between coercivity enhancement and exchange bias regimes, and field-free manipulation of AFM order. This approach offers precise control of magnetic interactions in self-assembled nanocomposites for advanced spintronic applications.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2026
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IF 6.2
Bohang Zhou,Qi Zhang,Yiwei Wang,Congwei Zhou,Qingli Song,Le Zhou
Developing agricultural fungicides from natural compounds is a popular trend. In the present study, a series of the derivatives of natural ethyl 3-phenyl-2,3-dibromopropionate were synthesized and investigated for antifungal activity, SAR, and action mode. The results found that the compounds possessed outstanding inhibition activity against nine phytopathogenic fungi at 50 μg/mL. Notably, ethyl 3-(4-trifluoromethylphenyl)-2,3-dibromopropionate (2l) had an in vitro EC50 of 1.78–4.82 μg/mL and 89.7% control efficacy against A. solani on tomato fruits at 300 μg/mL and on the ninth day, it was comparable to azoxystrobin. Meanwhile, 2l did not affect the germination rate of plant seeds at 200 μg/mL. The research on the action mode revealed that 2l disrupted mycelial morphology and cellular ultrastructure, increased the ROS level, and altered MMP and membrane permeability. Additionally, the SAR was deduced and explained via LUMO/HOMO/MEP analyses. The results make these derivatives promising leads for novel agricultural fungicides.
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PubMed
高影响因子
VETERINARY MICROBIOLOGY
·
2026
·
IF 2.7
Lei-lei Yang,Min Sun,Wen-wen Zhang,Hai-yan Wang,Zi-long Cheng,Mao-jun Liu,Zhi-xin Feng,Wen-liang Li
The respiratory epithelium acts as the airway's first physical barrier against invading pathogens, mainly relying on mucociliary clearance (MCC) and apical junctional complexes (tight junctions/TJs and adherens junctions/AJs) for barrier function. Primary airway epithelial cells cultured in the air-liquid interface (ALI) system can well mimic these characteristics in vitro . This study established and characterized well-differentiated ALI-cultured goat airway epithelial cells (ALI-GAECs), and developed a CPIV3 infection model therein, verifying the apical infection and release of CPIV3 in ALI-GAECs. CPIV3 infection impaired the barrier function of ALI-GAECs, as reflected by decreased trans-epithelial electrical resistance (TEER), increased FITC-Dextran permeability, and reorganization of the ZO-1 and F-actin meshwork. Mechanistically, RT-qPCR and Western blot analyses demonstrated that CPIV3 downregulated major TJ proteins (ZO-1, occludin, claudin-1) while upregulated the expression of proinflammatory cytokines (TNF-α, IL-1β, IL-4, IL-6). The NF-κB signaling pathway, but not the MAPK pathways, was activated upon viral infection. Treatment with the NF-κB inhibitor BAY 11–7082 partially restored the expression of TJ proteins and proinflammatory cytokines. Collectively, the activation of the NF-κB pathway and subsequent production of proinflammatory cytokines is responsible for CPIV3-induced TJ disruption. In addition, the developed ALI-GAECs model provides a valuable in vitro tool for investigating the pathogenesis of CPIV3 and other caprine respiratory pathogens.
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Kangyi Chen,Qingmo Shi,Yue Wang,Xinghai Li,Yingying Jiang,Haoran Xu,Shilong Guo,Li Zhao,Changsong Dai
A lately proposed NASICON-structured Na 3 MnTi(PO 4 ) 3 (NMTP) provides a promising solution that enables a large theoretical specific capacity and a high voltage discharge platform. However, it encounters a difficulty in electronic conductivity which obstructs its further implements. Herein, in this work we propose the Sodium-ion battery cathode materials Na 3 Mn 1−x Sc x Ti(PO 4 ) 3 /C with different Sc contents (x = 0, 0.01, 0.03, 0.05, 0.07, 0.1), a potential cathode material for sodium-ion batteries with typical three-dimensional NASICON structure were synthesized by sol-gel method aiming to address the problem. Doping of Sc 3+ in the NMTP structure was proved by powder X-ray diffraction and energy dispersive X-ray spectroscopy techniques . Impedance spectroscopy and galvanostatic intermittent titration technique results suggest that appropriate-proportion doping has dramatically enhanced the electrical conductivity and Na ion migration of the NMTP matrix. Na 3 Mn 0.95 Sc 0.05 Ti(PO 4 ) 3 exhibited a higher initial discharge specific capacity (123 mA h /g at 0.2 C, 111 mA h /g at 1 C) and the highest cycling stability (capacity retention of 93% after 250cycles at 0.2 C, capacity retention of 88% after 500 cycles at 1 C). In addition, Electrochemical Impedance Spectroscopy and X-ray diffraction tests revealed the reasons for the improved cycling stability of the materials due to doping. Furthermore, Na 3 Mn 0.95 Sc 0.05 Ti(PO 4 ) 3 //hard carbon full cells also demonstrates ideal electrochemical properties .
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2022
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IF 10.319
B. Li,H.J. Li,X.Y. Yao,X.F. Tian,Y.J. Jia,G.H. Feng
A (ZrC/SiC) 3 alternate coating was deposited on sharp leading edge (SLE) C/C composites by chemical vapor deposition (CVD). The ablation behavior was examined via oxyacetylene torch with heat flux of 2.38 MW/m 2 . The results indicated that the alternate coating exhibited great ablation resistance, providing an effective protection for C/C composites. In initial rapid heating stage, the (ZrC/SiC) 3 alternate coating can relieve thermal stress, avoiding the peeling of coating and keeping an intact coating structure. In subsequent ablation, the SiC layers in central region were consumed rapidly, leaving layered interspaces. Three stacked ZrO 2 layers were reserved with the assistance of the release of thermal stress by interspaces, offering a great anti-scouring effect. In transition and border regions, the alternate SiC layers can delay oxygen erosion of inner coating and C/C substrate by the formation of SiO 2 . It is believed that the results would be helpful for the design and application of anti-ablation coatings on SLE C/C composites.
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高影响因子
JOURNAL OF POWER SOURCES
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2015
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IF 6.217
Zhantao Liu,Xusong Qin,Hui Xu,Guohua Chen
In this study, a one-pot sintering process incorporating sol–gel preparation route and in-situ carbon coating was proposed for the synthesis of carbon-coated nanosized LiTi 2 (PO 4 ) 3 . Experimental results show that the prepared LiTi 2 (PO 4 ) 3 particles are of high crystallinity and well-coated by turbostratic carbon. Attributed to nanosized particles and enhanced conductivity provided by turbostratic carbon coating, the carbon-coated LiTi 2 (PO 4 ) 3 showed high rate performance and good cycling life in aqueous electrolyte. Particularly, the carbon-coated LiTi 2 (PO 4 ) 3 exhibited initial specific capacities of 103 and 89 mAh g −1 , and retained 80.6% and 97% of the initial capacities after 120 cycles at 1C and 10C in aqueous electrolyte, respectively. The high rate performance and good cycling life of carbon-coated LiTi 2 (PO 4 ) 3 in aqueous electrolyte reveal its potential as negative electrode in aqueous lithium-ion batteries for electric vehicles and industrial-scale energy storage systems .
研究领域:
材料科学
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电化学
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能源存储
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纳米技术
·
无机化学
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
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IF 9.127
Shujiao Yang,Zhihua Zhang,Lin Shen,Peng Chen,Zhi Gu,Mingyuan Chang,Yue zhao,Hao He,Xiayin Yao
An asymmetric solid polymer electrolyte (ASPE) is designed as two-in-one layered structure driven by gravity and in-situ polymerization. The rigid layer composed of polymer embedded three-dimensional continuous Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) framework improves the Li + transference number and critical current densities. The soft poly(ethylene glycol) (PEG) layer prepared via thermal polymerization by poly(ethylene glycol) methyl ether methacrylate (PEGMEM) makes good interfacial contact with cathodes. Driven by gravity, the two layers are automatically stratified during the polymerization. By virtue of this structural merit, the Li + transference number of PEG@LAGP ASPE extends to 0.144 (vs. 0.083 of PEG SPE), and symmetric Li/PEG@LAGP ASPE/Li cells can stably cycle over 400 h at current density of 0.5 mA cm −2 under 60 °C. LiFePO 4 /PEG@LAGP ASPE/Li cell exhibits excellent electrochemical performance at 2.5 C (0.5 mA cm −2 ) under 60 °C, reaching to a maximum specific capacity of 130.8 mA h g −1 and a capacity retention of 87.2% after 1000 cycles. Furthermore, the cells operating at high rates or high temperatures also have been demonstrated. This work provides a promising electrolyte design strategy for all-solid-state batteries with superior interface compatibility and long cycle life.
研究领域:
材料科学
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电化学
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储能技术
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高分子科学
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电池技术
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DOI
高影响因子
ACS Omega
·
2019
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IF 2.584
Zifeng Zheng,Zhixiang Cui,Junhui Si,Shengrui Yu,Qianting Wang,Wenzhe Chen,Lih-Sheng Turng
Composite tissue engineering scaffolds show good comprehensive properties, but improving their interfacial binding force is still a challenge. In this study, polydopamine (PDA) was used as a glue-like layer to solve the interface problem in three-dimensional (3-D) porous hydroxyapatite (HA)/thermoplastic polyurethane (TPU) composite scaffolds and to improve their comprehensive properties. The morphology, water absorption, porosity, hydrophilicity, mechanical properties, and cell viability of HA/TPU and PDA/HA/TPU scaffolds were systematically studied. The scanning electron microscopy and X-ray photoelectron spectroscopy results showed that a uniform PDA coating layer successfully formed on the surface of 3-D porous HA/TPU composite scaffolds by dopamine self-polymerization. Moreover, the conjugation effect occurred between the PDA and HA/TPU matrix, resulting in an increase in the interfacial binding force of the 3-D PDA/HA/TPU scaffold. The hydrophilicity of the PDA/HA/TPU scaffolds was significantly higher than those of the TPU scaffolds. Both static and dynamic mechanical property tests revealed that the PDA/HA/TPU scaffold possessed excellent comprehensive mechanical properties, such as high strength, high stiffness, and good flexibility, due to the enhancement of the interfacial binding force. Compared with TPU and HA/TPU scaffolds, the addition of a PDA coating could effectively improve the attachment and viability of mouse embryonic osteoblasts cells (MC3T3-E1) incubated on PDA/HA/TPU scaffolds. These results indicate that the PDA/HA/TPU scaffolds possess great potential to be used as tissue engineering scaffolds, and that the PDA coating could be a simple, practical, effective, and universal approach to modify composite scaffolds.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
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2026
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IF 3.9
Fang Junfei,Liu Lei,Yang Hang,Sun Yulong,Feng Rui,Li Liang,Deng Jianping,Gou Yuchun
Graphitic carbon nitride (g-C 3 N 4 ) is a material with a graphite-like layered structure. Due to its non-toxic and harmless nature, stable performance, and visible light response capability, g-C 3 N 4 holds significant application prospects in the field of photocatalysis. In this study, the Sb 2 (S,Se) 3 was coupled with g-C 3 N 4 to construct a heterojunction structure, and the photocatalytic degradation performance of the g-C 3 N 4 /Sb 2 (S,Se) 3 heterojunction materials on organic dye pollutants was investigated. Firstly, the g-C 3 N 4 /Sb 2 S 3 composite samples were prepared using a hydrothermal reaction. Subsequently, the g-C 3 N 4 /Sb 2 (S,Se) 3 heterojunction structures were constructed through selenization, and then they were used in the efficient photocatalytic degradation process of organic pollutants methylene blue (MB) and rhodamine B (RhB). The results indicate that due to the formation of the heterojunction structure, the light absorption performance of the g-C 3 N 4 /Sb 2 S 3 and g-C 3 N 4 /Sb 2 (S,Se) 3 composite materials is significantly strengthened, and the separation ability of the photo-generated carriers is remarkably improved. Therefore, compared with pure g-C 3 N 4 , the photocatalytic degradation activity of the composite system on MB and RhB is outstandingly enhanced. Furthermore, after partially replacing S with Se through selenization, the resulting heterojunction structure exhibits stronger photocatalytic degradation performance. For example, the 4-GSe sample obtained at a selenization temperature of 140 °C can achieve a degradation rate of 96% for MB within 60 min and a degradation rate of 95% for RhB within 90 min. Moreover, the prepared heterojunction structure can still maintain excellent photocatalytic degradation activity even in complex dye wastewater. This study offers innovative insights for the development of high-performance photocatalysts capable of efficiently degrading complex organic dye wastewater.
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高影响因子
危险品化学品经营许可证（带存储）