FUEL
·
2025
·
IF 7.5
Dandan Luo,Lan Yi,Jialing Chen,Hao Luo,Yuncai Song,Yi Huang,Xiaoqin Wu,Wen-Ying Li
The upgrading of coal-based fuels by eliminating acidic phenols and basic N-heterocyclic compounds is key to generating clean fuels, yet their simultaneous elimination is still a formidable challenge. According to this research, a tetraethylammonium chloride/oxalic acid (TEAC/OA) deep eutectic solvent (DES) realizes high simultaneous extraction efficiencies (>97 %) and a synergistic promotion: m -cresol’s extraction efficiency is increased from 90.6 % to 97.5 % by the presence of quinoline. In order to reveal the origin of this high performance, the integration between multi-scale simulations and spectroscopic analysis was conducted. The findings reveal that the high performance is caused by a complex “division-of-labor” system, where the Cl – anion anchors m -cresol while the quinoline is sequestered by the TEA + and OA. This selective capture is thermodynamically boosted, with the target molecules showing greater calculated interplay energies than the oil matrix. A near two-order-of-magnitude reduction in the diffusion parameters of the target molecules upon extraction further confirms the merit of this molecular “caging”. This research shows an effective method to purify complicated fuel oils and set up a novel principle of synergistic design for next-generation extractive separation media.
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FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Yue Niu,Lulu Fu,Kaijie Liu,Huiqing Liu,Dan Zhang,Aoran Wang,Hongxiang Xie,Zhi Fan,Minjie Guo,Bowen Cheng
The irreversible aggregation of nanocellulose during drying poses severe limitations to its practical applications. In this study, we developed a novel oven-drying system for cellulose nanocrystals (CNCs) using polyethylene glycol dimethyl ether (PD) as a capping agent. The incorporation of only 10 wt% PD (relative to dried CNC mass) into the CNC suspension effectively inhibited the formation of irreversible hydrogen bonds during drying, significantly enhancing both the redispersion rate and redispersion stability of dried CNCs. The redispersed CNC suspension fully restored the nanostructure and physicochemical properties identical to those of the original CNC suspension. The dried CNCs incorporated with PD (CNC PD ) not only retained its original crystal structure and crystallinity but also achieved higher thermal stability compared to original CNCs. Furthermore, CNC PD exhibited excellent redispersion in strongly polar aprotic solvents such as THF and DMSO, facilitating subsequent chemical modifications. In the modification process, PD can be regarded as a co-solvent without affecting the chemical modification of CNCs. After that, PD was conveniently removable through a simple water rinsing step. These results demonstrate PD's exceptional efficacy as a capping agent for preventing CNCs aggregation, thereby enabling convenient storage and application of CNCs in dried solid form.
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FUEL
·
2025
·
IF 7.5
Wanpeng Li,Xuewei Zhang,Guangmai Zhao,Tianhan Zhu,Mi Luo,Tianyu Gao,Chenguang Wang,Xiaoyu Chen,Jin Tan,Yuhe Liao,Haiyong Wang
The efficient and sustainable transformation of biomass-derived furfural into value-added chemicals is a key challenge in green chemistry. In this study, a series of Pt/CeO 2 catalysts with varying Pt loadings (0.1–2.0 wt%) were synthesized via a carbonization–reduction method and applied for the selective conversion of furfural to 2-furfural diethanol in ethanol under mild conditions. Comprehensive characterization using XRD, XPS, EPR, TEM, and Py-FTIR revealed that the 1.0 wt% Pt/CeO 2 catalyst exhibited optimal properties, including high dispersion of metallic Pt⁰, abundant oxygen vacancies, enriched Ce 3+ species, and dominant Lewis acid sites. Catalytic tests demonstrated that under mild conditions (20 °C, 4 MPa N 2 ), the 1.0 wt% Pt/CeO 2 catalyst achieved the highest yield (92.17 %) and furfural conversion (95.41 %). Mechanistic studies suggest a proposed redox-driven tandem hydrogenation–condensation pathway, where the synergistic effect between Pt⁰ sites and oxygen vacancies facilitates furfural activation, hydrogen transfer, and product formation. This work provides a mechanistic understanding of furfural upgrading over Pt/metal oxide interfaces and offers a promising strategy for the rational design of high-performance catalysts for biomass valorization.
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Applied Sciences-Basel
·
2025
·Vol. 15
·期 24
·12861
·
IF 2.5
Jianzhang Wang,Yingxia Wu,Jian Zhang,Shengli Wang,Hongliang Wang
Featured ApplicationIn this study, a traveling nutrient analyzer was designed for real-time, in situ monitoring of nutrients in seawater from moving vessels or fixed observation stations. It is a reliable tool for oceanographic surveys, marine environmental protection, and ecological research, enabling high-frequency data acquisition that is essential for understanding dynamic marine biogeochemical processes.Continuous monitoring of seawater nutrients is crucial for marine resource research and conservation, yet it faces challenges due to the constraints of offshore working conditions. We developed a multi-analyte sensor based on flow analysis technology, which integrates wet-chemical colorimetry/fluorometry for the simultaneous in situ determination of nitrite, nitrate, ammonium, silicate, and phosphate in seawater. To mitigate bubble interference, an integrated gas-trapping cavity was designed, and a data-cleaning algorithm based on the interquartile range method was implemented. In June 2025, a sea trial was conducted at two stations in the northern South China Sea, the results of which showed high consistency with laboratory standard methods: the maximum absolute relative errors were 1.79% for nitrite, 5.01% for nitrate, 1.42% for ammonium, 5.93% for phosphate, and 2.95% for silicate. The performance under real marine conditions is demonstrated by relative errors below 6% and linear correlation coefficients exceeding 0.999 for all parameters. This research demonstrates a practical approach for in situ marine observation.
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Small
·
2025
·
IF 12.1
Yingxue He,Bofeng Zhang,Jianhua Zhang,Juntian Chen,Kailing Zhou,FengLei Li,Hao Wang
Developing efficient hydrogen evolution reaction (HER)/hydrogen oxidation reaction (HOR) bifunctional electrocatalysts is crucial for next-generation hydrogen energy technologies. However, the fixed electronic structures of conventional catalysts fundamentally constrain their bifunctional performance. In this study, a Pt/WO 3 -based catalyst with dynamic self-switching electronic state was designed for boosting bifunctional HER/HOR electrocatalysis. During HER, the applied negative potential drives proton (H + ) insertion into WO 3 , inducing a phase transition from semiconducting WO 3 to metallic-like H x WO 3 . Electron transfer from H x WO 3 to Pt shifts Pt sites from an electron-deficient (Pt/WO 3 , model 1) to an electron-rich state (Pt/HxWO 3 , model 2), reducing the HER energy barrier from 0.4391 to 0.327 eV. Conversely, during HOR, the positive potential extracts H + from H x WO 3 , restoring the WO 3 phase and the electron-deficient Pt state, thereby lowering the HOR energy barrier from 0.5761 (Pt/H x WO 3 ) to 0.3253 eV (Pt/WO 3 ). The self-switching electronic state (model 2/model 1) endows the Pt/WO 3 -based catalyst with outstanding activity, featuring a low HER overpotential of 56 mV at 100 mA cm −2 and a high HOR exchange current density of 5.8 mA cm −2 . As an anode in hydrogen proton batteries (HPBs), it delivers a discharge capacity of 169.9 mAh g −1 at 0.1 A g −1 and maintains 80 mAh g −1 even at −40°C.
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Shuting Wei,Yue Yuan,Weifeng Chen,Jinzhi Ni,Huiying Zhang,Meiyu Yang,Ran Wei
While low molecular weight organic acids (LMWOAs) are commonly used to enhance the dissolution and bioavailability of polycyclic aromatic hydrocarbons (PAHs) in soils, a comprehensive mechanistic framework is lacking. In this study, four representative organic acids (formic, acetic, citric, and oxalic acids) were systematically evaluated to their efficacy in promoting PAH desorption from a long-term contaminated soil, with particular emphasis on elucidating the governing mechanisms and environmental implications. The results demonstrated that these organic acids increased the release of PAHs and dissolved organic carbon (DOC) by 1.17–1.90 fold and 1.12–17.39 fold, respectively, compared to the NaCl control. The ratio of desorbed PAHs per unit of DOC followed the order: acetic acid > formic acid ≫ citric acid ≥ oxalic acid. Citric and oxalic acids solubilized significantly more Fe 3+ and Al 3+ (bridging cations between minerals and soil organic matter, SOM) than formic and acetic acids, thereby releasing larger amounts of dissolved organic matter (DOM) with relatively high molecular weights. However, additional solubilization of Fe 3+ and Al 3+ had negligible effects of on PAH desorption. The dominant mechanisms governing PAH desorption included Ca 2+ dissolution and the disruption of negative charge-assisted hydrogen bonds, (−)CAHB, within SOM (including both intermolecular and intramolecular linkages). From the perspective of maintaining soil fertility and mitigating global climate change, formic/acetic acids outperform citric/oxalic acids in PAH desorption. The key advantage is that they release less biodegradable DOM, which reduces the risk of increased CO 2 emissions and helps preserve SOM.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
Rui Zhou,Yingying Zuo,Jian Wang,Xu Liu,Yushan Li,Zhengqi Liang,Boxing An,Hui Yao
The efficient separation of phenol from fuels using environmentally friendly methods is of significant importance for the protection of the environment and the advancement of the petrochemical industry. This work designed and prepared seven novel ternary deep eutectic solvents (DESs) to efficiently remove phenol from toluene-simulated oil. Within the temperature range of 298.15–333.15 K, the physical properties of these DESs, including density, viscosity, surface tension, and refractive index, were systematically measured. Physical properties such as molecular volume, standard entropy, lattice energy, viscous flow activation energy, viscous flow activation Gibbs free energy, and surface entropy were also calculated. The effects of temperature and structure on the physical properties of DESs were comprehensively investigated, and the relationship between internal interactions and property changes was further explored. These DESs were then applied to the liquid–liquid extraction process of phenol. All DESs demonstrated excellent extraction performance, with extraction efficiencies exceeding 93%. Among them, the [TBAC–EG–LA] system exhibited the highest efficiency (95.82%). The study revealed that extraction efficiency negatively correlates with the viscosity, surface tension, and activation energy of viscous flow in DESs. This research provides crucial theoretical foundations and data support for designing efficient, low-cost green phenolic extractants.
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CATALYSIS LETTERS
·
2025
·Vol. 156
·期 1
·21
·
IF 2.4
Yang Jihui,Shi Minghao,Zheng Jiahao,Zhang Shule,Zhong Qin
Ammonia Selective Catalytic Reduction (NH₃-SCR) is highly effective for nitrogen oxide (NO x ) removal, yet its low-temperature activity remains a key limitation for broader applications. We developed an innovative series of microporous N, O-codoped carbon catalysts (NOAC-x) that facilitate the fast SCR reaction. Results demonstrate that the synergy between catalyst micropore structure and surface functional groups governs denitrification performance: Low-temperature calcination induces pore blockage by nitrogen-containing groups (pyridinic N), reducing specific surface area and weakening NH₃/NO adsorption capacity.Moderate calcinatio promotes partial decomposition of nitrogen groups, optimizing the micropore structure while preserving active sites such as carboxyl groups and pyridinic N, thereby significantly enhancing catalytic activity.High-temperature calcinatio triggers pore collapse and decomposition of active groups, degrading performance.NOAC-600 achieved 95% NO x conversion at 120 °C and exhibited merely a 2% activity decline during a 108-hour stability test. This work provides theoretical guidance for designing microporous N, O-dual-doped carbon-based catalysts and underscores the critical importance of micropore structure and surface chemistry optimization in low-temperature SCR technology. Graphical
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Reaction Chemistry & Engineering
·
2025
·
IF 3.1
Wei Qi,Yuqi Chen,Liangzhi Li,Xin Ju,Hongwei Chen,Lishi Yan
The catalytic conversion of fructose to 5-hydroxymethylfurfural (5-HMF) in ternary deep eutectic solvent (DES)/methyl isobutyl ketone (MIBK) biphasic system at mild temperatures (50~70 ℃) was investigated in this work. The ternary DES consists of choline chloride (ChCl), benzene sulfonic acid (BSA) and ethylene glycol (EG) were physiochemical characterized by FT-IR and 1H NMR. The ternary DES(ChCl-BSA-EG)/MIBK biphasic system (ChCl/BSA/EG=2:1:1) resulted in 82.0% 5-HMF yield and 96.2% corresponding selectivity at 60 °C for 2 h. The kinetic analysis further revealed that the rate constant of fructose dehydration (k1) was much higher than the rate constant of 5-HMF conversion (k2). The calculated ratio of k1/k2 was 16.1. The proposed reaction mechanism suggested that the synergetic effect of the three components of ternary DES facilitates the elimination of water molecules from fructose and the formation of 5-HMF, while the MIBK extraction phase suppress the byproducts of 5-HMF as well. The present work provides a green and sustainable pathway for 5-HMF production with high yield and high selectivity at mild temperatures.
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Polymers
·
2025
·Vol. 17
·期 8
·1006
·
IF 4.9
Qiaorun Ma,Xun Meng,Hongtao Shi,Lian Chen,Jiangyao Han,Lifen Li,Liping Yu
The high-value utilization of enzymatic hydrolysis lignin (EHL) is essential for promoting the development of the biorefinery industry. This study investigated the enhancement of the antioxidant activity and ultraviolet (UV) absorption capacity of EHL through treatment with choline chloride (ChCl)-based acidic deep eutectic solvents (DESs). The yield, chemical structure, UV absorption properties, antioxidant activity, and thermal stability of the degraded and regenerated enzymatic hydrolysis lignin (DEHL) were analyzed. The results indicated that treatment with DESs effectively preserved the aromatic structure of EHL. Compared to untreated EHL, DEHL exhibited an increased O/C atomic ratio, a decreased UV transmittance, a significant reduction in weight-average molecular weight (Mw), and a notable increase in phenolic hydroxyl (ArOH) content. Notably, DEHL treated with ChCl–p-toluenesulfonic acid had the lowestMw(1586 g/mol) and the highest ArOH content. Except for the ChCl–malic acid and ChCl–acetic acid systems, all the other five DES treatments enhanced the antioxidant activity of DEHL to varying degrees. Among them, DEHL treated with ChCl–p-toluenesulfonic acid exhibited the highest antioxidant activity, with anIC50 DPPHvalue of 262.87 μg/mL.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Hao Huang,Ping Ying,Ye Wang,Qinghong Wu,Lei Wang,Xizhe Fu
Melastoma dodecandrum Lour. (MDL) contains abundant anthocyanins. Choline chloride-oxalic acid (ChCl-OA, 1:1) was selected for the temperature-dependent convection induced incremental extraction of anthocyanins from MDL. The regulating effects of MDL anthocyanins on gut microbiota were studied by analyzing the diversity in C57BL/6 J mice. The results showed that under optimized conditions (ultrasonic power of 310.4 W, extraction temperature of 59.9 °C, cold-stimulation time of 9.0 min, extraction time of 29.8 min), the yield of anthocyanins (Y A ) achieved the highest level at 60.28 ± 1.05 mg CGE/g DW, outperforming non-incremental approach by 58 %. The ratio of Y A obtained from the fifth regeneration of ChCl-OA to initial Y A was over 90 %. Eight anthocyanins were identified in incremental extracts, over four anthocyanins in non-incremental extracts. The ChCl-OA system achieved equilibrium at 3.5 ps with energy of −1002.22 kcal/mol. More hydrogen bonds number (128) and longer lifetime (6.72 ps) resulted in a larger diffusion coefficient of anthocyanins at 0.10 m 2 /s. The 60 mg/mL of anthocyanins increased the α-Diversity (Sobs) and Gut Microbiome Health Index (GMHI) by 22 % and 56 %, respectively, harmonizing the gut microbiota. Therefore, this recyclable ChCl-OA based incremental extraction has unveiled horizons for the green and sustainable production of MDL anthocyanins.
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LWT-FOOD SCIENCE AND TECHNOLOGY
·
2025
·
IF 6.6
Mengqi Yan,Sen Li,Ruitong Du,Kang Yang,Zejun Liu,Bingyou Yang,Haixue Kuang,Zhibin Wang
In this study, developed an efficient and environmentally friendly method for selectively extracting glucosinolates (GLS) from Raphani semen ( R. semen ) by integrating ultrasound-assisted extraction (UAE) with natural deep eutectic solvents (NADES). The extraction efficiency of 19 different NADES for GLS in R . semen under ultrasonic conditions was investigated, and it was found that betaine-levulinic acid exhibited outstanding dissolution performance. The extraction process was optimized using response surface methodology (RSM). Under optimal conditions, the GLS yield reached 93.86 mg/g, outperforming traditional solvents. Meanwhile, nine GLS compounds were identified using UHPLC-Q-TOF MS, and the interaction of the most abundant GLS with the solvent was simulated using molecular dynamics (MD). The extract exhibited significant antibacterial activity against Staphylococcus aureus ( S . aureus ) and Escherichia coli ( E . coli ). Additionally, the combination of the extract with ampicillin sodium demonstrated excellent additive and synergistic effects against E . coli and S . aureus , respectively. More importantly, compared to antibiotics, the extract has a reduced tendency to develop resistance. Overall, this promising and low-cost extraction technology provides a new strategy for further exploration of potential novel antimicrobial agents or adjuvants to combat bacterial infections.
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