Foods
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2025
·Vol. 14
·期 13
·2266
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IF 5.1
Teng Wei,Shengyue Zhong,Bin Huang,Kang Zha,Jing Li,Qiang Wen
Camellia chekiangoleosaHu. (C. chekiangoleosa) is a typical high-altitude oil-tea Camellia species. Due to altitude being an important factor affecting crop growth and quality, the influence of environmental conditions associated with low (60 m) and high (600 m) altitudes on the economic and quality characteristics of fruit ripening was assessed in this study. Our investigations showed that altitude has no influence on the growth pattern ofC. chekiangoleosafruit shells and seed oils, and the differences in samples between different altitudes gradually decreased with the ripening ofC. chekiangoleosa. Nevertheless, matureC. chekiangoleosafruit shells and seed oils from low and high altitudes showed some differences. Specifically, the fruit shells ofC. chekiangoleosacultivated in low-altitude areas contained more soluble sugar, protein, total polyphenols, total flavonoids, and tea saponin. Meanwhile, low-altitude cultivation elevated the abundance of α-tocopherol, β-sitosterol, β-amyrinol, flavonoids, and polyphenols in mature seed oils but decreased the oil yield. Moreover, few effects of altitude on fatty acid composition were observed in mature seed oils. Cluster and receiver operating characteristic (ROC) analysis indicated that the influence of altitude on the quality of mature seed oils was strongly associated with oil yield and α-tocopherol. Taken together, the present study suggests that when cultivatingC. chekiangoleosain low-altitude regions, more energy should be devoted to improving oil yield. The results of the fruiting process and quality trait variation inC. chekiangoleosaduring the low-altitude introduction process can provide an important theoretical basis for the introduction and cultivation of this oil-tea species.
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高影响因子
CARBON
·
2025
·
IF 11.6
Jiadi Lian,Zhuo Yu,Hangqing Xie,Jing Xu
To address the critical impact of temperature fluctuations on precision, stability, and friction coefficients (COF) in fluid machinery (e.g., pumps, compressors, motors), a carbon dots-embedded photoluminescent composite coating (CDs@PEEK) is developed for simultaneous non-contact temperature sensing and enhanced tribological performance on equipment surfaces. The CDs@PEEK coating exhibits temperature-responsive fluorescence, characterized by a linear intensity decrease from 50 to 120 °C with a sensitivity of 0.769 % °C −1 and excellent reproducibility of 98.01 % over five cycles. Additionally, it demonstrates superior tribological performance, achieving a lower COF (0.169 ± 0.004) compared to PEEK (0.178 ± 0.008) and stainless steel (0.335 ± 0.005), along with a reduced wear rate of 0.00548 ± 0.00010 mm 2 –4.0 % lower than PEEK and 64.6 % lower than stainless steel—indicating significantly enhanced wear resistance. The coating keeps stable fluorescence and temperature sensing after repeated heating, rubbing, and boiling. CDs@PEEK serves as a multifunctional coating for wear resistance and visual temperature monitoring, promising for smart fluid machinery.
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Journal of Energy Storage
·
2025
·
IF 9.8
Gang Li,Ye Jin,Zhongjia Dai,Rui Jiang,Jinyu Zheng
The high nickel stoichiometry in Li[Ni 0.8 Co 0.1 Mn 0.1 ]O 2 (NCM811) cathode materials, while advantageous for specific capacity enhancement, introduces concomitant challenges including (i) surface instability due to high surface residual Li compounds (RLCs) content, and (ii) accelerated structural degradation and deleterious phase transitions during electrochemical cycling. To address these challenges, NCM811 was treated with an aqueous solution of ammonium niobium oxalate, which not only reduced the RLCs content on the surface, but also in-situ constructed a LiNbO 3 coating layer on the surface of the NCM811 materials after the re-calcination process. Within a potential range of 2.75–4.3 V at 0.5C and 25 °C, the Nb-modified NCM811 materials exhibit the advantages of improved specific capacity of 215.3 mAh g −1 and excellent capacity retention of 92.3 % after 200 cycles. This integrated approach synergistically combines wet coating with re-calcination treatment to achieve dual modification of NCM811 cathodes-simultaneously reducing RLCs while enabling in-situ construction of a lattice-doped LiNbO 3 coating layer, demonstrating exceptional potential for scalable industrial implementation through its combined performance enhancement and process compatibility.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Ming Huang,Shunyan Ning,Juan Liu,Lifeng Chen,Mohammed F. Hamza,Yuezhou Wei
Ultra-high purity La2O3 (≥6 N, 99.9999%) with extremely low impurity elements is widely used in advanced optical and electrical fields and usually requires a complex purification process. In this study, a phosphonic acid functional resin (HEHEHP + TBP)/SiO2–P is prepared for the efficient removal of key impurity elements such as rare earth impurities, Fe, Th and U from La in a nitric acid medium. Batch experiments showed that in HNO3 solutions of pH ≥ 2, the removal efficiency of impurity ions by this resin was greater than 97%. The optimal separation factors (SFCe/La, SFPr/La, and SFNd/La) between light rare earths reached 7.55, 19.5, and 19.2, respectively. Advanced characterization confirmed the ion exchange and coordination mechanisms, involving the participation of the P–OH and PO groups. DFT calculations corroborated the higher affinity of the resin for U and heavy rare earth over light rare earth impurities. A process for the preparation of ultra-high purity La2O3 was proposed and verified by a continuous single column, achieving a purity increase from 99.995% to over 99.9999% with a purification ability of 180 mg La per g of resin and Th and U less than 0.05 ppm. It is worth noting that when the feed solution is only processed through a column filled with (HEHEHP + TBP)/SiO2–P (during the non-desorption step), a purified La(III) solution can be directly obtained, effectively adsorbing trace impurities. This process does not require the introduction of desorption agents, which reduces the economic cost. Compared with the multi-stage sequential purification method, it improves the production efficiency.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Dali Wu,Qingwan Xie,Chenggong Zhang,Xuhai Pan,Xiaowei Zang,Zhilei Wang,Dayong Xu,Min Hua,Juncheng Jiang
Developing optical hydrogen sensors with fast response, high contrast, and low cost presents particular challenges. In this research, we synthesized Pd nanoparticle-doped hexagonal WO 3 nanoflowers using hydrothermal and photochemical deposition methods. 0.50 at% Pd-WO 3 samples exhibited excellent response speed (29 s) and contrast (color difference value is 6.08) for 1 % H 2 at room temperature. Considering the applicability and versatility of the sensor, we also simulated harsh outdoor environmental conditions to conduct environmental stability tests on the samples. The material demonstrated exceptional cycling stability, high selectivity, and environmental stability as well. Compared to other crystal phases of WO 3 , the hexagonal WO 3 crystal structure provides a unique tunnel structure that enhances charge transfer capabilities. The synthesized nanoflower-shaped WO 3 with a hierarchical structure offers a significant specific surface area for reactions. The photodeposition of Pd nanoparticles resulted in a more uniform doping, and the synergistic effects of the three components collectively enhanced the material's gasochromic performance. This work presents a low-cost and efficient hydrogen-sensitive material that better meets the demands of practical industrial applications.
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RSC Advances
·
2025
·Vol. 15
·期 49
·41351-41363
·
IF 4.6
Meijuan Kuang,Qi Qin,Yun Li,Jiayi Lian,Changjiang Yu,Hui Yu,Tiantian Peng,Zhenya Jia,Xiaomao Song,Liantong Wang
Nanoscale zero-valent iron–biochar (BC@Fe) composites were synthesised via a one-step carbothermal method, followed by sulphidation to obtain sulphided BC@Fe (S-nZVI/BC-C-X) composites. Sulphidated nanoscale zero-valent iron–biochar (S-nZVI/BC-B-X) was also prepared using a one-step sodium borohydride reduction method. Batch experiments were conducted to investigate the effects of adsorption time, initial Cr(VI) concentration, pH and background ions on the Cr(VI) removal performance of S-nZVI/BC-C-X and S-nZVI/BC-B-X. A comparative analysis of their adsorption characteristics and removal efficiencies was conducted. The adsorption mechanisms were further elucidated through kinetic and isotherm model fitting, masking experiments and characterisation of the composites before and after Cr(VI) adsorption. The findings revealed that Cr(VI) removal by S-nZVI/BC-C-5 primarily occurred via (i) reduction of Cr(VI) to Cr(III) by FeS, FeS2 and Fe0, (ii) reduction of Cr(VI) to Cr(III) by Fe2+, (iii) reduction of Cr(VI) to Cr(III) by HS− released from FeS corrosion and (iv) adsorption of Cr(VI) by S-nZVI/BC-C-5.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Dali Wu,Chenggong Zhang,Xiang Liu,Qingyuan Wang,Zhilei Wang,Min Hua,Xuhai Pan
Self-assembled three-dimensional tungsten trioxide (WO 3 ) structures were synthesized using a low-cost hydrothermal process. By adjusting the pH of the precursor solution, monoclinic WO 3 (m-WO 3 ) and hexagonal WO 3 (h-WO 3 ) were fabricated. The morphology, structure, chemical composition, and gasochromic properties of both WO 3 phases were systematically characterized. The results showed that, compared to m-WO 3 sensors, h-WO 3 sensors exhibited a faster response time (23.43 s) and higher contrast (ΔE = 6.88) to 1 % hydrogen at room temperature. Furthermore, first-principles calculations based on density functional theory (DFT) not only explained the excellent sensing performance of h-WO 3 but also refined the understanding of the gasochromic mechanism of WO 3 . The combination of experimental and theoretical studies provides a detailed explanation of the differences in gasochromic properties between the two WO 3 crystal phases. h-WO₃ possesses a unique intracrystalline tunnel structure, which provides more adsorption sites and enables faster electron transport. This work offers a feasible strategy for designing novel hydrogen sensors and holds practical significance for hydrogen leak detection and traceability.
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REACTIVE & FUNCTIONAL POLYMERS
·
2025
·
IF 5.1
Fuhan Mai,Jianguo Deng,Xing Li,Xue Liu,Yingchun Lu,Wanjia Tian,Lanxiang Ji,Xiaofeng Bai
Radiation protection products with excellent radiation shielding properties and wear comfort are essential for individuals working in X-ray environments. Unfortunately, commercially available rubber composites and lead aprons cannot simultaneously meet the requirements for radiation protection safety and wear comfort. Here, a microfiber synthetic leather is proposed to solve this challenge. Hydrothermal synthesis of flower shaped WO 3 and investigation of its growth mechanism. Then, a titanate coupling agent is applied to synergistically modify with sodium carboxymethyl cellulose to construct hydrogen bonds and improve the interfacial compatibility between flower shaped WO 3 and waterborne polyurethane. Next, WO 3 is grown in-situ on microfiber nonwoven fabric by hydrothermal method. Finally, the waterborne polyurethane is coated onto the WO 3 in-situ grown microfiber nonwoven fabric. Monte Carlo simulations demonstrate that multilevel structures increase the probability of X-ray collisions with extranuclear electrons in materials, thereby enhancing X-ray shielding. In-situ growth of WO 3 resulted in an enhancement of the mechanical engagement points between microfiber nonwoven fabric and waterborne polyurethane, thereby improving their interfacial compatibility. The sample exhibits excellent durability. Importantly, the prepared samples exhibit x-ray shielding (55 %–90 %), light weight (0.835 g/cm 3 ), water vapor permeability (372 g/m 2 ·24h), and flexibility. These excellent properties demonstrate its potential for application in radiation protection, and bring broad prospects for the development of new radiation protection products.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Enze Wang,Da-Wen Sun,You Tian
Isochoric freezing is a hot research topic among recent novel food preservation methods, and litchi fruit is highly perishable, requiring reliable preservation techniques to maintain its quality and extend its shelf life for fresh consumption. In the current study, the effects of isochoric freezing and storage (IFS) at −2.5 °C on the preservation of fresh litchis for 35 days were investigated as compared with traditional frozen storage (TFS) at −18 °C and chilled storage (CS) at 4 °C on physicochemical characteristics (mass change, total soluble solid content, ascorbic acid content, and 2,2-diphenyl-1-picrylhydrazyl free radical scavenging capacity), colour quality, aroma profile, texture, and water status. Results showed that IFS was superior to TFS and CS in terms of colour, texture, and water status of litchi aril. Hierarchical cluster analysis (HCA) integrated multiple parameters to assess the overall quality of stored litchis, further demonstrating that isochoric freezing best preserves litchi quality in a manner most similar to fresh fruit.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yanqiu Xu,Jiaju Lu,Xuanli Chen,Yin Li,Keyu Zhang,Shaoze Zhang,Yaochun Yao,Junxian Hu
Sodium-ion batteries (SIBs) are the highly promising rechargeable batteries for large-scale energy storage systems, offering advantages such as low cost, high safety and fast charging capabilities. Important research work on SIBs has focused on exploring high-performance electrode materials and their mechanism in depth. With benefits of low cost, good thermal stability and small volume strain, Na 3.12 Fe 2.44 (P 2 O 7 ) 2 (NFPO) is a potential cathode material. However, the inherent poor conductivity of the material leads to polarization, consequently compromising electrochemical reversibility. Therefore, we synthesized NFPO composites with porous structure (P-NFPO) by sol-gel method which exhibited excellent electrochemical performance. The diffusion path of sodium ions during charging and discharging can be effectively shortened by the three-dimensional pore structure, which also promotes electrolyte penetration and absorbs volume expansion. P-NFPO exhibits a reversible specific capacity of 108.13 mAh g −1 at the rate of 0.1 C. Additionally, NFPO exhibits superb long-term cyclability and rate capability. Its specific capacity was found to be 95.94 mAh g −1 at a current density of 1 C. Impressively, even after 400 cycles at a rate of 5 C, it retains 95.1 % of its initial capacity, maintaining a reversible specific capacity of 74.6 mAh g −1 . Furthermore, when operated at 0.2 C, the P-NFPO//hard carbon full cell demonstrates a reversible capacity of 100.9 mAh g −1 . This study presents new ideas for modified cathode materials and promotes the practical application of cathode materials.
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Journal of Cleaner Production
·
2025
·
IF 10
Yuan Zhang,Xinru Ding,Wentao Bi
This study overcomes the limitations of traditional biomass carbonization, which typically requires high temperature, high pressure, or toxic solvents, by introducing a green strategy for synthesizing carbon-rich materials (deep eutectic system-derived biochar, DESysChar). In this approach, monosaccharides were used as carbon sources and converted into DESysChar within a deep eutectic system (DESys) under optimized mild conditions (HBA:HBD = 1:2, 150 °C, 3 h, solid-to-liquid ratio of 1:5). This work not only pioneers the exploration of the carbonization mechanism of monosaccharides in DESys but also highlights the efficient application of DESysChar in organic dye adsorption, with yield and adsorption capacity serving as key evaluation criteria. Comprehensive characterization of the DESysChars was performed using various analytical techniques, and the carbonization mechanism was elucidated through Fourier-transform infrared spectroscopy (FTIR), zeta potential measurement, X-ray photoelectron spectroscopy (XPS), and theoretical calculations. Kinetic and isotherm studies showed that the adsorption data conformed well to pseudo-second-order kinetics and the Langmuir isotherm model. The resulting DESysChar exhibited a high content of oxygen-containing functional groups, demonstrating a strong affinity for methylene blue (MB) with a maximum adsorption capacity of 259.98 ± 0.74 mg/g. Additionally, the material showed good selectivity for cationic dyes and excellent reusability. These results provide valuable insights into the green synthesis of carbon-rich materials and the underlying mechanisms of carbonization in DESys.
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Chemical Engineering Journal Advances
·
2025
·
IF 7.1
Amare Aregahegn Dubale,Borsamo Boroje,Workineh Mengesha Fereja,Wei-Qi Wang
The use of herbicides in farming to manage growth, combat pests, and enhance crop production ultimately contributes to environmental pollution. However, the removal of these herbicides remains challenging due to high costs, limited adsorption efficiency, complex synthesis, and poor stability of the adsorbents. In this study, we synthesized a nickel oxalate metal-organic frameworks like coordination compound (Ni-Ox) using a straightforward hydrothermal method for the adsorptive removal of 2,4-dichlorophenoxyacetic acid (2,4-D) from wastewater samples. The adsorbent exhibited a unique morphology with a mesoporous structure, abundant functional groups, and a homogeneous elemental composition and distribution, as characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and Brunauer-Emmett-Teller (BET) analysis. Ni-Ox demonstrated an exceptionally high removal efficiency of 99.7% for 2,4-D under optimal adsorption conditions: pH 2, contact time of 60 minutes, dose of 80 mg, stirring speed of 120 rpm, batch volume of 50 mL, and an initial concentration of 100 mg L⁻¹. The adsorption of 2,4-D on Ni-Ox was best described by the Langmuir model, with a maximum theoretical adsorption capacity of 384.6 mg g⁻¹ at 298 K. The kinetic data were best fitted by the pseudo-second-order model, yielding a rate constant of 2.8 × 10⁻³ g mg⁻¹ min⁻¹ and a q e value of 60.98 mg g⁻¹. Thermodynamic analysis indicated that the adsorption process was both endothermic and spontaneous, as evidenced by a positive ΔH° (+65.9 kJ mol⁻¹) and negative ΔG° values. The adsorption mechanism of 2,4-D on Ni-Ox was elucidated through post-characterization using XPS, FTIR, and XRD, and was found to be primarily driven by electrostatic attraction, hydrogen bonding, and van der Waals forces. Furthermore, Ni-Ox maintained an efficiency of over 80% even after multiple regeneration and reuse cycles. These findings provide valuable insights for the design of effective adsorbents for the herbicide removal from aquatic environment.
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