CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Yingjie Hou,Feng Ma,Zhen Fu,Jiasheng Dai,Yujie Tang,An Qiang,Xinye Jiang,Zheng Wang
Cost and thermal stability are critical for the application of low-temperature phase change materials (PCMs) in asphalt pavements. Aliphatic eutectic phase change materials (AEPCMs) are expected to be potential candidates for new low-temperature PCMs. The objective of this study was to develop a set of low-temperature AEPCMs with a phase transition temperature of − 3.58 to 16.21 °C and a latent heat of 144.01 to 195.96 J/g in an attempt to replace tetradecane (TD). To fully evaluate the properties of low-temperature AEPCMs and TD, and the impacts of their direct incorporation into asphalt, the chemical structures , enthalpies, mass retention, economic costs, and changes in the physical and rheological properties of the modified asphalt were investigated. The results showed that AEPCMs with a phase transition temperature similar to that of TD could be obtained by eutectic crystallization and retained the chemical properties of their components. However, the latent heat decreased progressively with the increase in the number of components. The AEPCMs exhibited higher thermal stability than TD, with a maximal increase in mass retention from 37.24% to 86.66% at 180 °C. In addition, AEPCMs exhibited significant cost advantages. The most inexpensive AEPCMs synthesized in the laboratory is only 112.01 ¥/kg and an enthalpy cost of 0.57 ¥/kJ, accounting for 30.1% and 35.8% of TD cost, respectively. Incorporation of AEPCMs and TD increased the lightweight component of asphalt binders and caused damage to the conventional physical and rheological properties of asphalt binders, but polar AEPCMs had fewer deleterious effects on asphalt compared to nonpolar TD.
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Food Bioscience
·
2025
·
IF 5.9
Lin Yuan,Yunjie Li,Liuyan Zheng,Yifan Qin,Xin Zhang,Lijuan Ma,Huan Zhang,Liping Du
Organic acids are critical flavor contributors in light-flavor Baijiu (LFB). The binding of organic acids and volatile compounds may affect the release of flavor in Baijiu. In this study, the effects of different concentrations of lactic acid, hexanoic acid, butyric acid, and acetic acid on the release of key aroma-active compounds in LFB were investigated. Twenty volatile compounds were identified as key aroma-active compounds in four LFB samples using odor activity values combined with aroma recombination, and omission experiment methods. Furthermore, as the concentrations of organic acids were increased in the simulated LFB solution, significant changes in the release of key aroma-active compounds occurred. The addition of lactic acid from 0.5-fold to 5-fold resulted in all key aroma-active compounds exhibiting stronger releases, especially the addition of a 3-fold concentration of lactic increased the release of key esters to about twice. In contrast, the effect of hexanoic acid, butyric acid, and acetic acid on the release of key aroma-active compounds showed a concentration-dependent trend. This suggests that the specific structures of volatiles and organic acids alter the intermolecular interactions between them, thereby altering the aroma release. The results reveal that different organic acids alter the overall aroma profile by affecting the release of volatile compounds in the LFB matrix.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Quan Wang,Peng Song,Yi Zhang,Naixin Wang,Quan-Fu An
The utilization of intermittent clean energy requires high efficient energy storage technologies to minimize energy losses during charge-discharge processes. In this work, ionic covalent organic polymer (iCOP) composite membranes are presented to promote the battery efficiencies of iron-chromium redox flow battery (ICRFB). iCOP powder was synthesized by interfacial polymerization method and the resulting composite membrane possessed superior physicochemical membrane. Sulfonic acid groups in the synthesized iCOP facilitated the proton transportation of the prepared membranes. A hydrogen bond network formed between perfluorinated PEM and iCOP further promoted the proton transportation of the membrane. Meanwhile, the positively charged amino groups under acidic conditions reduced the permeation of Fe 3+ and Cr 3+ ions due to the Donnan effect. Specifically, proton conductivity of iCOP-8 membrane reached 215 mS cm −1 at 80 °C. Moreover, iCOP-8 demonstrated the lowest permeation rates for both Fe 3+ (1.44 × 10 −7 cm s −1 ) and Cr 3+ (0.47 × 10 −7 cm s −1 ) among all membranes herein. In terms of the ICRFB efficiencies, a Coulombic efficiency of 97.66 % and energy efficiency of 87.11 % was achieved at a current density of 100 mA cm −2 . The battery also operated stably for over 200 cycles without significant performance degradation (CE: >97.01 %, EE: >86.01 %).
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JOURNAL OF SEPARATION SCIENCE
·
2025
·Vol. 48
·期 3
·e70116
·
IF 2.8
Jinghui Li,Yan Kang,Ying Wang,Jiaxin Liu,Yingting Wang,Sitong Liu,Yunxi Bu,Xiangqun Li,Jiahan Xie,Zhibing Wang
A simple, green, and efficient ultrasound-assisted deep eutectic solvents (DESs) extraction followed by high-performance liquid chromatography-diode array detector was established to detect four liposoluble anthraquinones in Salvia miltiorrhiza Bge. root. In this study, a series of polarity-adjustable DESs were prepared using n -hexanol and tetrabutylammonium chloride, and their structure, density, viscosity, pH, and thermal stability were determined. The conditions for extraction were optimized through single-factor experiments and response surface methodology. The kinetic and thermodynamic properties associated with the ultrasound-assisted extraction of anthraquinones were investigated. The results showed that the standard curves for anthraquinones showed excellent linearity from 0.018 to 150 µg mL −1 ( r > 0.9998). The detection and quantification limits varied from 5.04 to 5.60 ng mL −1 and 16.81 to 18.67 ng mL −1 , respectively. The recoveries were measured as 84.1%–95.1%, and the relative standard deviations were not exceeded 4.6%.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Shijiao Fan,Zechuan Lu,Zhenning Yan,Liuyang Hu
In this paper, the interaction of three berberine mid-chain fatty acid salts ([BBR][FAs]), viz. berberine caproate ([BBR][CAP]), berberine heptylate ([BBR][HEP]) and berberine octoate ([BBR][OCT]), with bovine serum albumin (BSA) was studied by means of UV–visible absorption spectroscopy , fluorescence spectroscopy, fourier transform infrared spectroscopy (FT-IR) and molecular docking techniques. Fluorescence experiments revealed that three berberine salts quench the fluorescence of BSA by static quenching mechanism resulted from a stable [BBR][FAs]-BSA complex formation. The stoichiometric numbers of [BBR][FAs]-BSA complexes were found to be 1:1. Synchronous and three-dimensional fluorescence spectra as well as FT-IR demonstrated that the binding of [BBR][FAs] altered the microenvironment and conformation of BSA. The binding average distance from [BBR][FAs] to BSA (3.2–3.5 nm) was determined according to Förster energy transfer theory. Site probe investigation showed that [BBR][FAs] bound to BSA active site I (sub-domain IIA). The binding promotes the esterase-like activity of BSA. The molecular docking results confirmed the fluorescence competition findings and provided the type of binding forces. Furthermore, the relationship between the anionic chain length of [BBR][FAs] and the interaction was explored, and the positive correlation was found.
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Applied Physics Reviews
·
2024
·Vol. 11
·期 3
·
IF 11.9
Wang Jindi,Li Mingyang,Fan Wenxuan,Xu Leimeng,Yao Jisong,Wang Shalong,Song Jizhong
Perovskite quantum dot-based light-emitting diodes (QLEDs) have been considered as a promising luminescent technology due to high color purity and wide color gamut. However, the realization of high-performance QLED is still hindered by near-perfect quantum dots (QDs) with efficient and stable exciton recombination behavior. Here, we proposed a ligand compensation (LC) strategy to optimize the QDs by introducing a ligand pair of tri-n-octylphosphine (TOP) and CsBr. The ligand pair could enhance the clarity and colloidal stability of the QD ink, facilitating the fabrication of highly smooth films. On one hand, TOP engages in interactions with Pb and effectively passivates the surface uncoordinated Pb 2+ . On the other hand, the supplement of CsBr provides a Br-rich environment to reduce Br vacancies (V Br ). Through LC, QD films possess a high photoluminescence quantum efficiency of 82% and a shallow hole level, which enables efficient exciton recombination. In addition, the LC makes QD films exhibit stable exciton combination behavior and electrical transport characteristics. Resultantly, the LC-optimized QLEDs show a maximum external quantum efficiency (EQE) of 24.7% and an operational lifetime T 50 of 182 h at an initial luminance of 100 cd m −2 , which is obviously higher than that of the control device (EQE of 15.8%, T 50 of 11 h). The proposed LC strategy for optimizing perovskite QDs presents a novel concept for achieving high-performance QLEDs and holds great potential for widespread application in various optoelectronics.
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Journal of Energy Chemistry
·
2024
·
IF 14
Baofei Sun,Wei Chen,Yanyi Huang,Daofu Wu,Heng Luo,Faguang Kuang,Hongmei Ran,Yichen Liu,Liqin Gao,Jinchen Zhou,Bo Gao,Qiang Huang,Xiaosheng Tang
Metal halide perovskites (MHP) are potential candidates for the photocatalytic reduction of CO 2 due to their long photogenerated carrier lifetime and charge diffusion length. However, the conventional long-chain ligand impedes the adsorption and activation of CO 2 molecules in practical applications. Here, a ligand modulation technology is employed to enhance the photocatalytic CO 2 reduction activity of lead-free Cs 2 AgInCl 6 microcrystals (MCs). The Cs 2 AgInCl 6 MCs passivated by Oleic acid (OLA) and Octanoic acid (OCA) are used for photocatalytic CO 2 reduction. The results show that the surface defects and electronic properties of Cs 2 AgInCl 6 MCs can be adjusted through ligand modulation. Compared with the OLA-Cs 2 AgInCl 6 , the OCA-Cs 2 AgInCl 6 catalyst demonstrated a significant improvement in the catalytic yield of CO and CH 4 . The CO and CH 4 catalytic yields of OCA-Cs 2 AgInCl 6 reached 171.88 and 34.15 µmol g −1 h −1 which were 2.03 and 12.98 times higher than those of OLA- Cs 2 AgInCl 6 , and the total electron consumption rate of OCA-Cs 2 AgInCl 6 was 615.2 µmol g −1 h −1 which was 3.25 times higher than that of OLA-Cs 2 AgInCl 6 . Furthermore, in situ diffuse reflectance infrared Fourier transform spectra revealed the enhancement of photocatalytic activity in Cs 2 AgInCl 6 MCs induced by ligand modulation. This study illustrates the potential of lead-free Cs 2 AgInCl 6 MCs for efficient photocatalytic CO 2 reduction and provides a ligand modulation strategy for the active promotion of MHP photocatalysts.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Jingtong Zhai,Yalei Wang,Jiaxin Lu,Chunning Chen,Jiaqi Liu,Hongkun Zhao,Nan Lu
Surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS) emerges as an effective method for analyzing small molecules. At the current stage, its application is still limited by its detection sensitivity. According to the mechanism of SALDI-MS, the sensitivity highly depends on the laser desorption/ionization (LDI) efficiency. In this study, we adjust the localized surface plasmon resonance (LSPR) between particles by changing the gap, thereby improving the efficiency of LDI. The gaps of nanoparticles can be adjusted by the ionic strength in the solution. With the decrease of the gaps, the thermal effect of the nanoparticles is gradually enhanced and the number of excited electrons is also increased, which improves the sensitivity of SALDI-MS. The prepared substrate with optimized gaps has wide applicability for the detection of small biomolecules and dye molecules. Moreover, the substrate can successfully detect trace small molecules in complex samples. The analysis of sulfonamide in lake water shows the commendable performance of the substrate. The relative standard deviations (RSD) of spot-to-spot and batch-to-batch are 3.73% and 7.22% respectively, confirming the high reproducibility and the detection limit is as low as 100 pM, indicating the high sensitivity of the substrate. The results demonstrate that adjusting the LSPR of metal nanoparticles is a promising method for improving the performance of SALDI-MS.
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JOURNAL OF CHROMATOGRAPHY A
·
2024
·
IF 3.8
Dingli Ye,Junqiang Hao,Rongxu Zhang,Yangyang Zhou,Shurong Chen,Weijian Zhang,Lei Zhao,Jiahan Xie,Zhibing Wang
A simple, fast, and efficient ultrasonic-assisted supramolecular solvent microextraction combined with high performance liquid chromatography method was developed for the determination of coumarins in Cortex fraxini , including esculin, esculetin and fraxetin. In this study, a novel supramolecular solvent was prepared with 1-octanol, tetrahydrofuran and water for the first time, and its composition, viscosity, density, structure, and micromorphology were characterized. The prepared supramolecular solvent exhibited vesicular structures and had the characteristics of low viscosity. Through single-factor experiments, response surface methodology and artificial neural network-genetic algorithm, the optimal extraction conditions were obtained as follows: NaCl concentration of 1 mol mL −1 , pH value of 10, solid-liquid ratio of 10:1, vortex time of 30 s, ultrasonic power of 100 W, ultrasonic temperature of 60 °C, ultrasonic time of 15 min, centrifugation speed of 5000 rpm, and centrifugation time of 1 min. The results demonstrated that the artificial neural network model exhibited maximum R -values of 0.98703, 0.97440, 0.99836, and 0.95447 for training, testing, validation, and all dataset, respectively. The minimum mean square errors were 0.75, 10.15, 1.99, and 2.63, respectively. This indicated that the predicted values were almost consistent with the actual values. Under the optimal conditions, the total extraction yields of target analytes reached 2.80 %. The calibration curves for each analyte exhibited excellent linearity within the linear range ( r > 0.9993). The limits of detection and quantification ranged from 4.87 to 6.55 ng mL −1 and 16.24 to 21.84 ng mL −1 , respectively. The recoveries ranged from 98.71 % to 111.01 % with relative standard deviations of less than 3.6 %. The present method had the advantages of short extraction time (15 min) and less solvent consumption (0.5 mL). The prepared supramolecular solvent was proved to have great potential in extracting coumarins from medicinal plants.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2024
·Vol. 416
·期 18
·4057-4070
·
IF 3.8
Li Tiemei,Duan Lichong,Shi Longrui,Liu Enxiu,Fan Jing
A novel ferrofluid prepared from a hydrophobic deep eutectic solvent (DES) and Fe 3 O 4 @graphite composite materials was introduced as a green microextraction medium for the separation and enrichment of trace estrogens in real samples. It was found that the ferrofluid greatly improved the capacity and selectivity of target analytes, benefiting from the enrichment of both DES and Fe 3 O 4 @graphite composite materials. Using a combination of high-performance liquid chromatography–fluorescence detection (HPLC-FLD) and vortex-assisted liquid–liquid microextraction (VALLME), a new method was established for simultaneous rapid processing and accurate determination of three estrogens (estradiol [E2], estriol [E3], and ethinyl estradiol [EE2]) in environmental water and urine samples. Key parameters affecting the extraction efficiency were optimized using a single-factor approach and response surface methodology. Under optimal conditions, this method yielded a low limit of detection (1.01 ng L −1 , 3.03 ng L −1 , and 25.0 ng L −1 for EE2, E2, and E3, respectively), wide linear range (3–200,000 ng L −1 ), high enrichment factors (9.81–47.2), and satisfactory recovery (73.8–129.0%). Compared with traditional analytical techniques, this method avoids the use of volatile toxic organic extraction solvents and cumbersome phase separation operations. Graphical abstract
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Nature Electronics
·
2024
·Vol. 7
·期 6
·487-496
·
IF 33.7
Gao Yun,Li Hongjin,Dai Xingliang,Ying Xingjian,Liu Zhe,Qin JiaJun,Guo Jie,Han Zhongkang,Zhang Yujing,Zhu Meiyi,Wu Xiaohui,Cai Qiuting,Yang Yixing,Feng Linrun,Zhang Xiaoyu,Huang Jingyun,He Haiping,Gao Feng,Ye Zhizhen
Perovskite light-emitting diodes (PeLEDs) could be of use in the development of active-matrix displays. However, due to ion migration in crystal structure, PeLEDs have electroluminescence rise times over milliseconds, which is problematic for the development of high-refresh-rate displays. Here, we show that the electroluminescence rise time of PeLEDs can be reduced to microseconds using an individual-particle passivation strategy. The approach is based on BF 4 − ions that can passivate every nanocrystal in a perovskite emissive layer during film deposition. It leads to a defect-free film with discrete nanostructure and excellent crystallinity, which inhibits ion migration. Our strategy can be applied in perovskite nanocrystal films with different colours: red (635 nm), green (520 nm) and blue (475 nm). These PeLEDs all demonstrate response times within microseconds and high external quantum efficiencies of 22.7%, 26.2% and 18.1%, respectively. This allows us to create microsecond-response active-matrix PeLEDs that exhibit external quantum efficiencies above 20% at a display brightness of 500–3,000 cd m −2 for green devices with a resolution of 30 pixels per inch. We also develop microsecond-response red, green and blue active-matrix displays with 90 pixels per inch.
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Nano Research
·
2024
·
IF 9.5
He Jinhua,Wang Chenhui,Liu Mingrui,Ramzan Muhammad,Long Zhiwei,Wu Xian-gang,Chen Yu,Zhong Haizheng
The potential use of large-size ZnSe quantum dots as blue emitters for display applications has greatly inspired the colloidal synthesis. Herein, we report the negative effects of side reactions of large-size ZnSe quantum dots. The side reactions between oleic acid and oleylamine generated amidation products and H 2 O, which led to the hydrolysis of Zn(OA) 2 to Zn(OH) 2 and the subsequent formation of zinc oxide (ZnO) and zinc bis[diphenylphosphinate] (Zn(DPPA) 2 ) precipitates. These side reactions resulted in the formation of a defective surface including a Se-rich surface and oxygen-related defects. Such negative effects can be overcome by adopting an etching strategy using potassium fluoride and myristic acid in combination. By overcoating a ZnS shell, blue emissive ZnSe/ZnS quantum dots with a maximum photoluminescence quantum yield of up to 91% were obtained. We further fabricated ZnSe quantum dots-based blue light-emitting diodes with an emission peak at 456 nm. The device showed a turn-on voltage of 2.7 V with a maximum external quantum efficiency of 4.2% and a maximum luminance of 1223 cd·m −2 .
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