CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Shiqi Sun,Yanjun Chen,Qiang Bai,Zhen Tian,Que Huang,Changcheng Liu,Shengnan He,Yaxiong Yang,Yanzhong Wang,Li Guo
Researchers are accustomed to utilizing traditional solid-state and sol–gel routes to synthesize Na 3 V 2 (PO 4 ) 3 (NVP). No regulation mechanism is proposed to illustrate the growth process of NVP in solvothermal environment. In current work, uniform spherical particles with positive charge are synthesized by molecular self-assembly of nanosphere micelles using structural guiding agent polyethylene glycol (PEG) and surfactant Cetyltrimethylammonium bromide (CTAB). Nanoflower-shaped NVP sample is successfully prepared in the 100 % methyl alcohol medium, derived from the plate V 2 O 5 (negative charge) combining with the nuclear nanospheres (positive charge) with the induction of electrostatic attraction. Based on the multi-dimensional tests and molecular dynamic calculation, the protective mechanism of polar solution for NVP system is proposed for the first time, that is, methanol solvent system can better protect the morphological features of NVP than water environment to maintain the original special nanoflower morphology. Due to the distinctive and stabilized nanoflower construction, the optimized NVP60 sample can provide more extra active sites for the efficient de-intercalation of Na + and possess a large contacting area with electrolyte, resulting in the facilitated kinetic characteristics and superior electrochemical performance. The optimized NVP60 cathode possesses superior sodium storage property in both half cell and full cell. This work proposes a synergetic strategy combining theory and experiment to design and synthesize the modified NVP-based cathode materials from the molecular bonding aspect, further promoting the development of high performance cathode for SIBs.
研究领域:
材料科学
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电化学
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纳米材料
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能源存储
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无机化学
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计算材料学
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电池技术
✓ 已验证
DOI
高影响因子
THERMOCHIMICA ACTA
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2016
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IF 1.938
Lipeng Wang,Fucheng Zhang,Yongping Bai,Liping Ding
The kinetic of non-isothermal crystallization of Poly (ethylene terephthalate-co-sodium-5-sulfo- iso -phthalate) (PETI) was investigated using differential scanning calorimetry (DSC). Various macrokinetic models namely the Avrami, Tobin, Ozawa, and Ziabicki were used to describe the non-isothermal crystallization process of PETI. Both of the Avrami crystallization rate constant and the Tobin crystallization rate constant were observed to increase with increasing cooling rate. The Avrami model is better than the Tobin model to describe the non-isothermal crystallization process of PETI. The Ozawa crystallization rate K O was found to decrease with increasing cooling rate, while Ziabicki’s kinetic crystallizability parameter G Z was found to increase with increasing cooling rate. The effective energy barrier △E for non-isothermal crystallization process of PETI, analyzed based on the differential iso-conversional method of Friedman, was found to be an increasing function of the relative crystallinity.
研究领域:
高分子化学
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材料科学
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物理化学
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热分析
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聚合物结晶
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2018
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IF 5.091
Siyuan Dong,Yingqi Jia,Xiaozhi Xu,Jianeng Luo,Jingbin Han,Xiaoli Sun
Poly(ethylene terephthalate) (PET) generally suffers from low crystallization rate and long molding duration, which as a result limit its application as engineering plastics. To overcome these drawbacks, series of PET/layered double hydroxide (LDH) nanocomposites were prepared by a solution blending process. The effect of metal composition (MgAl and CaAl) and organo-modification (stearic acid intercalated) for LDH fillers on the crystallization behavior of the nanocomposites was investigated. It was revealed that, compared with PET/CaAl-LDH, the PET/MgAl-LDH nanocomposite exhibits a higher crystallization temperature and faster crystallization rate, which is associated with the superior nucleation ability of MgAl-LDH. The nucleation mechanism of PET induced by LDHs was explored by means of Avrami equation and theory of Hoffman-Lauritzen, pointing out that the incorporation of LDHs reduce the free energy of nucleation and the fold surface free energy of PET. In order to improve the compatibility between LDH and PET, stearic acid (SA) intercalated MgAl-LDH was prepared and filled into PET matrix. The resultant PET/MgAl-LDH-SA shows a further enhanced crystallization temperature and accelerated crystallization rate, in comparison with PET/MgAl-LDH nanocomposites. In addition, the thermal stability, gas barrier and mechanical properties of PET/LDH composites were improved upon incorporation of LDH fillers.
研究领域:
高分子科学
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材料化学
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纳米复合材料
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结晶动力学
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聚合物物理
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功能材料
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工程塑料
✓ 已验证
DOI
高影响因子
POLYMER TESTING
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2022
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IF 4.931
Yang-he Mo,Hui Wang,Shao-hua Jin,Ke-lin Peng,Zi-ming Yang,Pu-wang Li,Yu Chen
Fast curing hydrogels are highly valuable in the skin care industry. Multi-arm polyethylene glycol (PEG) is a commonly used crosslinking agent for the preparation of fast curing hydrogels. However, the hydrogel preparation using multi-arm PEG crosslinking agents usually requires the end group modifications of reactants, which makes the preparation process complicated and produces hydrogels with low curing rates. In the present study, a fast in situ curing hydrogel, 4-arm-PEG-succinimidyl carbonate/carboxymethyl chitosan (PEG-SC/CMCS), was prepared using 4-arm-PEG-SC as the crosslinking agent and carboxymethyl chitosan (CMCS), a derivative of natural polysaccharide with excellent comprehensive properties, as the framework without any end groups modified. The structure and properties of the prepared hydrogel were characterized by FTIR, XRD, SEM, rheology and swelling kinetics. The effects of reaction conditions on the structure and properties of hydrogel were investigated. The PEG-SC/CMCS hydrogel exhibited pH-sensitive swelling behaviors. Its application potential in skin care products is demonstrated with its excellent sustained-release performance of Vitamin C, a model drug for skin treatment, and high adsorption capacity of heavy metal ions that are easily deposited on skin surface. Our work has provided a new strategy for building multifunctional gel materials for skin care and offered a PEG-SC/CMCS hydrogel with great application potentials.
研究领域:
生物材料
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高分子化学
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药剂学
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皮肤科学
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组织工程
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药物递送系统
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环境毒理学
✓ 已验证
DOI
高影响因子
FUEL
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2025
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IF 7.5
Xiaoli Zhang,Yimin Wang,Li Cui,Yuewen Chen,Xiya Zhang,Yihu Ke,Zhen Yuan,Hai Liu,Zhile Xiong
The selective oxidation of glycerol to dihydroxyacetone (DHA) is an essential route to effectively utilize the by-product glycerol of biodiesel, but the difficulty in balancing the activity and recycling stability of the catalyst severely limits the practical application of this process. Herein, we utilize the morphology engineering strategy of Au-loaded Cu-Zn composite oxide catalyst to optimize the catalytic performance. By regulating the calcination temperature, the Cu 0.1 Zn 0.9 O-T supports with morphologies such as microrod clusters, microrods, microspheres and yolk shells are obtained, and a series of Au/Cu 0.1 Zn 0.9 O-T catalysts are synthesized by loading Au NPs prepared through the plant-mediated method. The glycerol oxidation experiments reveal that catalyst morphology exerts a significant influence on efficacy. Among the tested catalysts, the microrod-structured Au/Cu 0.1 Zn 0.9 O MR exhibited the best performance, achieving complete glycerol conversion (100 %) and a DHA selectivity of 82.3 %. Particularly, Au/Cu 0.1 Zn 0.9 O MR exhibits excellent cycling stability that outshines most current catalysts, while maintaining 68.8% glycerol conversion and 78.2 % DHA selectivity after five runs. The underlying mechanism of the influence of catalyst morphology on the glycerol conversion performance is further revealed by a series of characterizations and density functional theory calculations.
✓ 已验证
产品关联
DOI
高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
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2025
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IF 1.8
Hai-Wen Tang,Jin-Jin Jiang,Liu-Si Yu,Hong-Lin Yu,Yun-Qian Zhong,Li-Mei Yu,Su-Jun Wang,Huan Zhang
This study presents a dual-carbon modified LiMn0.6Fe0.4PO4 cathode (LMFP/SWNT/C) through the combined integration of amorphous carbon and single-walled carbon nanotubes (SWNTs). The composite was synthesized via a solvothermal approach followed by carbonization, forming a homogeneous conductive network with enhanced graphitization (IG/ID ratio = 3.24–4.24 versus 0.98–0.99 for LMFP/C). Electrochemical characterization revealed superior performance, including a high discharge capacity of 160.8 mAh g−1 at 0.1C and excellent cycling stability (124.9 mAh g−1 with 92.6% capacity retention after 280 cycles at 1C). In-situ electrochemical impedance spectroscopy (EIS) coupled with distribution of relaxation times (DRT) analysis indicated that the addition of SWNTs could improve the electronic conductivity. These results demonstrate the effectiveness of hybrid carbon architectures for optimizing LMFP cathode materials.
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2025
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IF 4.6
Tao Tian,Yifei Mao,Sheng Gong,Liang Zou,Yizong Huang,Yanshan Cui,Jinchao Wei,Peng Li
Although copper is essential for various functions in the human body, excessive intake can damage the nervous and immune systems. In this study, a new fluorescent covalent organic framework probe (DP-TFPB COF) was first reported. Relying on the rational design, the synthesized DP-TFPB COF demonstrates a distinctive fluorescence enhancement effect upon different solvent induction, achieving a quantum yield of up to 20.5 %. Then, a covalent organic framework-based ratiometric fluorescent system was developed, incorporating blue-emitting carbon dots to leverage the fluorescence energy transfer effect. Blue-emitting carbon dots served as the reference signal, while the DP-TFPB COF acted as the response unit, enabling successful quantitative detection of Cu 2+ . The mechanism study demonstrated that fluorescence quenching occurs through an electron transfer process, wherein the covalent organic framework serves as the electron donor and Cu 2+ functions as the electron acceptor. The developed method demonstrated excellent linearity for Cu 2+ within the concentration range of 0.5 to 200 μM, accompanied by a detection limit of 0.38 μM. The robust recognition capabilities exhibited significant effectiveness in the Cu 2+ analysis within herbal plants. The results correspond closely with those obtained using inductively coupled plasma mass spectrometry, thereby emphasizing its potential applicability in real samples with complex matrix.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Communications
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2025
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IF 4.5
Peilin Cao,Jiahua He,Cong Wang,Dejin Yan,Nai Lin,Ji’an Duan
The joint strength of ceramic/metal interfaces has become one of the major technical difficulties in the development of solid oxide fuel cells. Hence, a method to fabricate 3D cone structure arrays on the surface of yttria-stabilized zirconia (YSZ) and stainless steel (Crofer 22 APU) by femtosecond laser machining technique is proposed to improve its shear strength. Compared to the shear strength of flat substrate (5 MPa), the optimized strength (23.4 MPa) is 4.7 times that of the original strength. Increasing the sintering temperature from 200 °C to 350 °C enhances the mobility and sintering of Ag nanoparticles, leading to a denser Ag layer and consequently improving the interfacial connection strength. Cross-sectional analysis of the sintered joint reveals that the 3D cone structure forms a mechanical interlock with the Ag layer, enhancing the interfacial shear strength. A finite element analysis model is also established for revealing the shear stress distribution in the Ag layer with microstructure.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Chenglin An,Ting Xie,Guangxu Li,Jiangtao Wu,Xiaochun Wu,Wentao Jiang
While non-contact magnetic fields have been widely employed as stimuli for modulating magnetic, electric, and catalytic properties , their direct influence on gas sensing processes remains unexplored. The renaissance of multiferroics , whose surface electric polarization can be magnetically controlled via intrinsic magnetoelectric coupling effect, offers the possibility to manipulate gas sensing properties through magnetic field. Here, we investigated the effect of the external magnetic field on gas sensing performance using the most representative multiferroic material. Our experimental results demonstrate that the Bi 0.92 Dy 0.08 FeO 3 sensors exhibit a non-linear magnetic field-controlled acetone sensing performance. When the Bi 0.92 Dy 0.08 FeO 3 sensor is exposed to a 140 mT magnetic field, its gas response towards 100 ppm acetone rises from 12.7 to 20.3, reaching a 60 % increase. The response time decreases from 53 to 41 s, corresponding to a 113 % increase in reaction rate constant. These improvements are attributed to the magnetoelectric coupling effect, which induces surface uncompensated polarization and enhances domain conductivity, thereby promoting surface oxygen chemisorption and charge carrier transport. Our findings not only advance the fundamental understanding of magnetically tunable gas sensors but also broaden the potential applications of multiferroic materials.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Jiayu Xie,Xuran Jin,Hong Cheng,Wei Chen,Wancheng Yu,Linlin Wang
Glycerol has been proved to be an effective plasticizer for polyvinyl alcohol (PVA), which can significantly increase PVA’s processability and ductility, whose molecular origin remains unclear. In current study, the physical structure and chain dynamics of polyol plasticized PVA were studied in detail, including ethylene glycol , glycerol, erythritol , xylitol , and sorbitol under the same addition level. The glycerol plasticized PVA exhibits the most significant reduction in Young’s modulus, enhanced superior toughness, and the lowest melting temperature (195 °C) as compared with other polyols. The molecular mechanism was elucidated through comprehensive analysis, with a particular focus on solid state NMR (SS NMR) results. The physical structure was first elucidated by the Small Angle X-ray Scattering (SAXS) and Wide Angle X-ray Scattering (WAXS). The crystallinity of the glycerol plasticized PVA was the lowest 29 % by WAXS and the thickness of the amorphous layer was the largest 7.76 nm by SAXS among different plasticized PVA films. This suggests the significant influence of glycerol on structure change of PVA. The molecular dynamics information was further accessed by Low Field Nuclear Magnetic Resonance (LF NMR), where two key features are obtained: i) Different dynamics dimensionality. The 1 H spin diffusion NMR was used to check the dimensionality from the aspect of chain dynamics. Compared with other plasticizers, LF NMR result shows that glycerol plasticized PVA has a two-dimensional (2D) structure; ii) Chain dynamics heterogeneity in the interphase . With respect to the chain dynamics heterogeneity in the interphase, the glycerol plasticized PVA shows the most heterogeneous dynamics, with the lowest ratio of the rigid amorphous fraction (RAF) of 0.507 in the interphase. Current study provides a versatile analytical strategy to quantify the plasticizing effect.
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2026
·
IF 4.3
Qingyuan Niu,Penghui Ma,Feng Luo,Xingyu Liu,Shuxin Yin,Xin Huang,Yumin Song
Red fluorescent powder has important applications in various fields such as display and lighting. In this paper, Eu 3+ /Nb 5+ co-doped SrTiO 3 fluorescent material was synthesized by hydrothermal method, and its phase structure, microstructure, luminescence properties, thermal stability and luminescence dynamic characteristics were systematically characterized. The results showed that under 395 nm near-ultraviolet excitation, the material emitted high-purity Eu 3+ characteristic red light at 612 nm; when the Eu 3+ doping content was 7 mol% and Nb 5+ was 3.5 mol%, the luminescence intensity was increased by 259% compared with single-doped Eu 3+ ,and the absolute quantum efficiency increased. Nb 5+ plays a dual role in this process, namely charge compensation and energy transfer modulation: On one hand, it inhibits the formation of lattice defects through charge balance between sites; on the other hand, it constructs an efficient light absorption center, enabling ultrafast energy transfer from the matrix to Eu 3+ . This material has stable color properties within the temperature range of 303-463 K, with no obvious color shift, and the thermal quenching activation energy is 0.34 eV, showing excellent thermal stability. This efficient and stable red fluorescent powder prepared by the Eu 3+ /Nb 5+ co-doping strategy has broad application prospects in near-ultraviolet excitation high color rendering index white LED and anti-counterfeiting encryption fields.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
·
IF 8.8
Xiaozhen Lu,Lin Wang,Bin Liu,Hong Peng,Xuewu Zhu
Nanofiltration (NF) for advanced drinking-water treatment has long been constrained by the need to remove contaminants while preserving beneficial mineral ions in health-oriented drinking water. Herein, an ethylene-glycol (EG)-regulated aqueous microenvironment was introduced to tailor the interfacial polymerization process. EG-mediated hydrogen bonding and modified interfacial thermodynamics jointly regulated piperazine diffusion, interfacial transport, and polymerization kinetics, producing polyamide NF membranes with enhanced negative charge surface density and a more uniform effective pore structure. Compared with the pristine membrane, the EG-20 membrane exhibited a thinner, more hydrophilic, and more negatively charged selective layer, together with a narrower pore-size distribution. The optimized EG-20 membrane achieved a permeance of 23.6 L m −2 h −1 bar −1 while maintaining Na 2 SO 4 rejection above 95.5%. In the treatment of natural surface water, dissolved organic matter removal reached approximately 92.1%, while partial passage of beneficial mineral ions was maintained, enabling effective organic contaminant removal with mineral preservation for health-oriented drinking water treatment. Moreover, high rejection of PFAS and antibiotics was maintained, mainly because steric exclusion and enhanced electrostatic repulsion compensated for the moderately enlarged effective pores. In addition, the membrane showed improved antifouling performance, as enhanced surface hydration and electrostatic repulsion reduced foulant adhesion and suppressed irreversible fouling. Overall, this microenvironment-regulation strategy provides a feasible route for developing NF membranes that integrate effective contaminant control, mineral preservation, and stable operation.
✓ 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）