CHEMICAL ENGINEERING SCIENCE
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2025
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IF 4.3
Changqing Yuan,Xiaorong Meng,Han Shen,HaoHao Wei
To address the shortcomings of VO 2 (B) when utilized as cathode materials for aqueous zinc ion batteries (AZIB), this study prepared a fluorine and manganese co-doped VO 2 (B) with a nanorod-like structure, formed from convoluted multilayered nanosheets, was synthesized via a solvothermal method. It was established that F and Mn doping effectively broadens the lattice structure and tunneling space of VO 2 (B) and induces lattice distortion of VO 2 (B) through the high electronegativity of F element, leading to the ductile growth of FMVO into a nanorod-like structure made of multilayered ultrathin nanosheets curled. The increased tunneling space and active sites of FMVO, compared to pure VO 2 (B), significantly enhanced the de-embedding rate of Zn 2+ and reduced diffusion resistance. The specific capacity of F 0.06 M 0.02 VO is 523.92 mAh/g (0.2 A/g) with 88.64 % capacity retention after 2,000 cycles (5 A/g). This research provides a novel approach to the development of cathode materials for AZIB.
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Food and Bioprocess Technology
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2015
·Vol. 8
·期 5
·1011-1019
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IF 2.691
Yang Huqing,Zheng Jianying,Huang Chengqian,Zhao Xiaofei,Chen Huiyun,Sun Zhidong
This study was conducted to investigate the effects of aqueous chlorine dioxide (ClO 2 ) combined with chitosan coating on microbial growth and quality maintenance of fresh-cut bamboo shoots during cold storage. Fresh-cut shoots respiration rate, weight loss, firmness, lignin, colour, microbial and activities of phenylalanine ammonia lyase (PAL), cinnamyl alcohol dehydrogenase (CAD), peroxidase (POD) and polyphenol oxidase (PPO) were measured. The results indicated that treatment with 28 mg L −1 ClO 2 plus chitosan coating inhibited increase in respiration rate and firmness, delayed browning and lignification and reduced microorganism counts of total aerobic bacteria and yeasts and moulds compared to control treatment. The efficiency was better than that of ClO 2 or chitosan treatment alone. Furthermore, combination of ClO 2 and chitosan inhibited the activities of PAL, CAD, POD and PPO throughout the storage period. Our study suggests that ClO 2 plus chitosan coating treatment may be a promising method of maintaining fresh-cut bamboo shoot quality and extending their postharvest life.
研究领域:
采后生理学
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食品科学
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园艺科学
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食品保鲜
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LWT-FOOD SCIENCE AND TECHNOLOGY
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2026
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IF 7.1
Silei Zhang,Qingbo Huang,Xiangmin Kuang,Chaofan Guo,Yongli Jiang,Fujie Zhang,Sakamon Devahastin,Junjie Yi
Oxidative polymerization of catechins drove the green-to-brown color transition. • Electrolyzed water with ultrasound improved drying efficiency and flavor retention. • More extensive cellular disruption contributed to accelerated moisture migration. • Color, aroma, and moisture changes closely reflected quality changes during drying. • Artificial neural network most accurately predicted moisture and catechin contents. Color is critical determinant of market grade and commercial value of star anise ( Illicium verum Hook. f.). However, mechanisms underlying its characteristic green-to-reddish-brown transformation during processing remain insufficiently understood. The present study investigated color evolution of star anise by comparing ultrasound-assisted electrolyzed water treatment (UEWT) with conventional hot-water blanching (HWB) using framework combining drying kinetics, E-nose, LF-NMR, untargeted LC-MS data as well as machine learning modeling. UEWT significantly enhanced drying efficiency, shortening drying time to 8 h compared to 13 h in case of HWB. LF-NMR spectra revealed that UEWT maintained distinct water mobility profiles, effectively reducing internal mass transfer resistance. UEWT also intensified the chromatic transition, as evidenced by a decline in L* , rapid increases in a* and BI, a greater Δ E , an overall decrease in H , and higher late-stage C* values than those observed under HWB. Catechin depletion, accompanied by formation of oligomeric oxidation products, represents key transformation pathway associated with color development. Among the evaluated machine learning models, ANN-based model exhibited superior performance, achieving high prediction accuracy for both moisture content ( R 2 > 0.98) and catechin content ( R 2 > 0.92). These findings provide new insights into physicochemical basis of color formation and offer practical strategy for real-time quality control during industrial drying of aromatic crops. Download: Download high-res image (294KB) Download: Download full-size image
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DIAMOND AND RELATED MATERIALS
·
2025
·
IF 5.1
Qi Hu,Chenhao Xu,Yulong Hua,Cunkang Qi,Jing Zhang,Yuemin Wang,Chengchun Tang
To explore the improvement of microwave absorption performance of boron nitride nanosheets (BNNSs) after doping with graphene quantum dots (GQDs). Herein, a series of point-layer structure BNNSs supported by GQDs composite absorbing materials were designed and prepared. The influence of the substrate on the wave absorption intensity was investigated by loading the same GQDs with BNNSs of different scales. Among them, the BG-1400 with BNNSs-1400 as the substrate and GQDs as the load has the best microwave absorption performance. Its minimum reflection loss ( RL min ) reaches −60.3 dB and the effective absorption frequency band is 8.5 GHz. In order to further analyze the factors influencing the effective absorption frequency bands of BNNSs/GQDs composites, BNG-1400 and BFG-1400 were prepared by loading N-GQDs and F-GQDs respectively on the BNNSs-1400 substrate, and their RL min and effective absorption frequency bands were -57.3 dB, −57.7 dB and 11.3 GHz, 13.4 GHz, respectively. The effective absorption frequency bands of BNG-1400 and BFG-1400 have been significantly improved compared with BG-1400.This indicates that the substrate size of the BNNSs/GQDs composite material can control its absorption intensity, while different doped elements in GQDs can adjust its effective absorption frequency band. This discovery lays the foundation for the research on the controllable adjustment of the wave absorption performance of BNNSs/GQDs composite absorbing materials.
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DYES AND PIGMENTS
·
2021
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IF 4.889
Haifeng Lu,Lichao Xu,Hua Wang,Shengyu Feng
Fluorescent silicone polymers have attracted much attention owing to their strong fluorescence and high stabilities. However, most of these silicone polymers have suffered from fluorescence quenching caused by aggregation in high concentrations. In this work, 7, 11-diphenyl-8 H - acenaphth[1, 2 - f ] isoindole-8, 10 (9 H ) - dione functionalized polysiloxane (PMDF) with strong blue fluorescence was successfully synthesized via Diels-Alder reaction. Besides high thermal stability, PMDF showed unique aggregation-induced emission enhancement in high concentrations, indicating it is an excellent fluorescent silicone polymer in both disperse and aggregate state. Moreover, the product polymer showed highly sensitive fluorescence response to Fe 3+ , with low detection limit to 0.895 ppm and a high selectivity in the present of other metal ions. This work may open a new window for exploring fluorescent polymers as ideal probe for Fe 3+ .
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MOLECULES
·
2023
·Vol. 28
·期 14
·5304
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IF 4.6
Caiyuan Liu,Xin Fang,Hui Peng,Yi Li,Yonggang Yang
The aim of this work is to effectively combine the advantages of polymer and ceramic nanoparticles and improve the comprehensive performance of lithium-ion batteries (LIBs) diaphragm. A flexible film composed of electro-spun P(VDF-HFP) nanofibers covered by a layer of mesoporous silica (P(VDF-HFP)@SiO2) was synthesized via a sol–gel transcription method, then used as a scaffold to absorb organic electrolyte to make gel a electrolyte membrane (P(VDF-HFP)@SiO2-GE) for LIBs. The P(VDF-HFP)@SiO2-GE presents high electrolyte uptake (~1000 wt%), thermal stability (up to ~350 °C), ionic conductivity (~2.6 mS cm−1at room temperature), and excellent compatibility with an active Li metal anode. Meanwhile, F-doping carbon/silica composite nanofibers (F-C@SiO2) were also produced by carbonizing the P(VDF-HFP)@SiO2film under Ar and used to make an electrode. The assembled F-C@SiO2|P(VDF-HFP)@SiO2-GE|Li half-cell showed long-cycle stability and a higher discharge specific capacity (340 mAh g−1) than F-C@SiO2|Celgard 2325|Li half-cell (175 mAh g−1) at a current density of 0.2 A g−1after 300 cycles, indicating a new way for designing and fabricating safer high-performance LIBs.Keywords:composite materials;electro-spun nanofiber;gel electrolyte;carbonaceous anode;lithium-ion batteries
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高影响因子
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
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2023
·
IF 4.9
Yuying Bai,Dawei Tian,Zhengxin Ren,Dangyang Yue,Qian Ren,Li Pei,Jun Pan
Though magnetic iron oxide nanoparticles (IONPs) are approved for clinical use as contrast agents for MR imaging in United States and Europe, and are widely used to label cells in research, the relationship between IONPs and mesenchymal stem cells (MSCs) is not fully addressed. Here the effects of consistently appeared γ-Fe 2 O 3 on the lineage commitment of MSCs were studied to optimize applications of IONPs in MSCs upon verification of viability. 30 nm 10 μg/mL induced highest promotions on osteogenesis, while 30 and 50 nm of 100 μg/mL elicited most chondrogensis in 14 days, where the effects on ALP, GAG and SOX9 appeared after 7 days, while on RUNX2 came out after 10 days. γ-Fe 2 O 3 enhanced intracellular and extracellular Fe 3+ and ROS, modulated F-actin and decreased Lamin A of MSCs at different time scale. The disturbances of F-actin, Lamin A or ROS altered the effects of γ-Fe 2 O 3 on MSC differentiation. Our results demonstrate that different size, concentration and modulation of γ-Fe 2 O 3 are needed in its MSC applications for bone and cartilage tissues. Furthermore, an undocumented phenomenon that the modulation of F-actin affected the Lamin A expression in MSCs was observed.
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HIGH PERFORMANCE POLYMERS
·
2019
·
IF 1.584
Yinhong Liu,Yuhan Wei,Yongshuang Bian,Shengjiao He,Xin Wang,Xin Liu,Chenglei Li,Qi Wu,Xianyin Zeng,Hanguang Wang,Kuan Liu
Design and synthesis of highly selective fluorine ion probes become particularly important owing to the specific role of fluorine ion in chemical and biomedical progresses. As a new-type of fluorescent material, conjugated polymers with unique photometric properties have been widely researched by scientists in the field of the fluorescence sensors. In this study, the polymer PBTPV-OSi containing benzothiazole moiety is synthesized via palladium-catalyzed Heck coupling reaction. This polymer not only exhibits good solubility in organic solvents but also shows high selectivity for fluorine ion detection in comparison to other anions. Upon addition of F− to PBTPV-OSi solution, Si–O cleavage of PBTPV-OSi leads to the fluorescence quenching of the polymer in tetrahydrofuran dramatically, and the detection limit is 8 × 10−6 mol/L. Moreover, besides detecting fluorine ion from organic phase, the probe can also effectively detect potassium fluoride from inorganic phase. More importantly, a naked-eye detectable chromogenic and fluorogenic dual response to fluorine ion (F−) can be visibly noted and the detection process of fluorine ion is relatively fast.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2024
·
IF 3.5
Xiaohui Wu,Xixi Wang,Yulan Jing,Yuanxun Li,Hua Su
With the emergence of 5G–6G communication technology, the miniaturization and integration of electronic components are crucial. Ba 3 Ti 4 Nb 4 O 21 (BTN) ceramics with hexagonal structures have attracted special attention due to their high dielectric constant, which shows greater application potential in communication base stations and dielectric resonators. However, its high sintering temperature and low-quality factors also greatly limit the application field. In this paper, boric acid (H 3 BO 3 ) as a dopant, was used to investigate the influence on the structure, microstructure, Raman spectrum, and microwave properties for Ba 2.92 Cu 0.08 (Zn 1/3 Nb 2/3 ) 2 Ti 2 Nb 4 O 21 (BCZTN)- x HB (0.25≤ x ≤1.25 wt%) ceramics. The results reflected that H 3 BO 3 was an effective additive, which could promote ceramic densification, accelerate grain growth and uniform distribution, and enhance its microwave performance. Among them, high densification was 93.92 ± 0.35%, and the Q × f value ∼16981 ± 340 GHz at x = 0.75, was more than 2∼3 times higher than other BTN-based ceramics. Superior microwave dielectric properties were achieved for 0.75 wt% H 3 BO 3 -doped BCZTN ceramic sintered at 900°C: ε r ∼42.35 ± 0.48, Q× f ∼16981 ± 340 GHz, and τ f ∼40.02 ± 1.43 ppm/°C. More encouragingly, BCZTN-0.75HB ceramic did not chemically react with Ag, which suggested that it had the potential to be a candidate material for low-temperature co-fired ceramics base station communication devices.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Xinwei Xie,Yaoliang Huang,Li Xu,Guangyu Luo,Haifeng Liu,Xinlong Zhang,Jinyue Yang,Junze Lei,Xiaoyuan Yu
O3-type Ni/Mn-based transition metal oxides have garnered significant interest as cathode materials for sodium-ion batteries (SIBs) due to their high specific capacity and abundant resources. However, their commercialization application has been impeded by rapid capacity fading owing to structural degradation, gas evolution, irreversible phase transitions during charge/discharge cycling. Herein, The Zr 4 + /F - dual-doped strategy is developed to boost the Na-storage performance of Ni/Mn-based O3-NaNi 0.3 Fe 0.1 Mn 0.47 Cu 0.1 Zr 0.03 O 2-x F x (NFMCZF-x) layered oxide cathode material prepared by high temperature calcination method. Structural and electrochemical analyses reveal that Zr⁴⁺ doping expands Na⁺-layer spacing and F⁻ doping strengthens transition metal-oxygen bonds. These synergistic effects of Zr 4+ /F - dual-doping is benefit to suppressing O3↔P3 phase transitions, Jahn-Teller distortion and irreversible oxygen redox. Thus, the optimized NFMCZF-0.03 cathode delivers high specific capacity (178 mAh g −1 at 0.1 C) and excellent cycling stability (72 % capacity retention after 100 cycles at 1.0 C). This study establishes dual doping as an effective strategy for developing Ni/Mn-based layered oxide as high-performance cathodes for SIBs.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Bowen Zhang,Yiqi Zhang,Zhanchen Cui,Wei Wang,Zuosen Shi
The threshold voltage and mobility of organic thin-film transistors (OTFTs) are influenced not only by the dielectric constant of the insulating layer but also by the crystallinity at the interface between the semiconductor and the insulating layer. The crystallization of 2,9-didecyldinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (C10-DNTT) is driven by molecular fastening effects from its long alkyl chains and π–π* stacking interactions. This work proposes a method utilizing the interaction of interfacial functional groups to create nucleation centers for C10-DNTT, thus reducing grain boundaries. We synthesized the homopolymer poly(4-(1,3-dithia-2thioxocyclopentyl) methacrylate) (P(TCMA)), which possesses side chains with high dipole moment thiocarbonate groups, and the copolymer poly(4-(1,3-dithia-2thioxocyclopentyl) methacrylate-co-10-([1,1’:4′,1″-terphenyl]-3-yloxy) decyl methacrylate) (P(TCMA-co-10TPOMA)), which contains decyloxytriphenyl groups in its side chains. The mobility of OTFT devices increased from 0.84 cm2 V–1 s–1 with cured P(TCMA) as the insulating layer to 2.97 cm2 V–1 s–1 with cured P(TCMA-co-10TPOMA)-5, reaching a maximum of 3.40 cm2 V–1 s–1 when P(TCMA-co-10TPOMA)-15 was used as the insulating layer, making it a promising candidate for direct application in drive units.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Wenyu He,Jinhui Wei,Ting Huang,Enren Zhang
For practical applications of microbial fuel cells (MFCs), 5H-dibenz [b,f] azepine-5-carboxamide (Carbamazepine, CBZ) was used as the organic precursor for the synthesis of catalysts composed of Fe–N–C complexes (named as Fe-CBZ-Cats) through a sacrificial support method. Characterizations by SEM, XPS and TEM-EDS elemental mapping show that the synthesized Fe-CBZ-Cats have porous structure and uniformly dispersed Fe/N/C complex centers which could play key roles in effective ORR . Linear scanning voltammetry (LSV) measurements show that the synthesized Fe-CBZ-Cats exhibits ORR activity comparable to commercial Pt/C catalysts under the same catalyst loading (2 mg cm −2 ). The maximum power density produced by cathode-limiting MFCs with Fe-CBZ-Cats air cathodes was 431 ± 23 μW cm −2 , higher than those in the control MFCs with Pt/C air cathodes (403 ± 13 μW cm −2 ) and activated carbon air cathodes (296 ± 24 μW cm −2 ). In addition, the toxicity tolerance of the synthesized Fe-CBZ-Cats is much higher than Pt/C.
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危险品化学品经营许可证（带存储）