JOURNAL OF CHEMICAL THERMODYNAMICS
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2019
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IF 2.29
Kai Kang,Xiaodong Liang,Georgios M. Kontogeorgis,Xiaopo Wang
In this work, the experimental measurements for liquid densities of n -decane and m -xylene binary mixtures were performed over the entire composition range with a high-pressure vibrating-tube densimeter. The range of temperatures for the present measurements was from 293.15 K to 363.15 K and the pressures were up to 60 MPa. The combined expanded uncertainty of the density measurements is estimated to be 0.001 ρ with 0.95 confidence. Experimental density values were correlated by the modified Tammann-Tait equation. The simplified Perturbed Associating Fluid Theory (sPC-SAFT) and Cubic Plus Associated (CPA) equations of state (EoS) were applied to predict the densities of n -decane and m -xylene and their mixtures. Reasonably results were observed between the experimental data and calculated results for the two equations, and the deviation is less than 0.48% and 0.89% with sPC-SAFT and CPA EoS, respectively. In addition, excess molar volumes were determined from the experimental density data as well as from sPC-SAFT and CPA models. The effects of pressure and temperature on the excess molar volume were also discussed.
研究领域:
化学工程
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热力学
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流体相行为
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高压物理化学
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状态方程建模
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INTERNATIONAL JOURNAL OF PHARMACEUTICS
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2026
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IF 6
Shen Yan,Eric Brendle,Mengyuan Li,Shengyu Zhang,Xiao Dong Chen,Winston Duo Wu
Spray drying and spray freeze drying induce distinct particle structure. • IGC is highly effective in resolving molecular-level surface characteristics. • IGC-ID reveals surface leucine enrichment and elevated dispersive energy. • IGC-FC quantifies hydrophilic site reduction and maps polar surface areas. • Surface energetics serve as a quantitative predictor for wetting and release. The unpredictable wettability of pharmaceutical microparticles, often stemming from complex phase transitions during processing, frequently eludes conventional unidimensional assessments of surface hydrophilicity. In this study, mannitol-leucine microparticles were fabricated via spray drying and spray freeze drying. Their structural properties—including morphology, particle size, and polymorphism—were systematically correlated with surface energetics (dispersive energy, acid–base characteristics, and hydrophilic site distribution) as delineated by inverse gas chromatography (IGC). Increasing leucine content induced pronounced surface wrinkling, sustained crystalline stability, and resulted in larger particle sizes in spray-dried samples. Conversely, spray-freeze-dried particles maintained a relatively uniform morphology but exhibited unstable δ-mannitol polymorphs with enhanced dispersibility. IGC analysis uncovered that leucine enrichment elevated dispersive surface energy, attenuated surface basicity, and diminished the hydrophilic surface area, with these effects being more pronounced in the spray-dried samples. Crucially, both the absolute hydrophilic surface area and the fractional distribution of hydrophilic domains were identified as key determinants modulating particle wettability and release behavior. This study highlights the capacity of IGC to resolve multiparametric surface energetics, thereby advancing the mechanistic understanding of pharmaceutical particle wettability through non-invasive, high-precision characterization. Download: Download high-res image (129KB) Download: Download full-size image
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FLUID PHASE EQUILIBRIA
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2026
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IF 2.7
Jian-an Wang,Jiahao Shi,Junyu Feng,Qingsong An,Shengshan Bi
High-pressure density data of n -alkanols are essential for the design of biodiesel blended fuels and fuel injection in marine engines. However, reliable experimental data for n -alkanols (C4–C7) under high pressures (up to 200 MPa) remain scarce. In this study, a high-pressure density measurement system based on the variable-volume method was established, achieving a combined expanded uncertainty of 0.27% ( k = 2). The densities of n -alkanols (C4–C7) were measured over the temperature range of 303.15–383.15 K and pressures up to 200 MPa. The measured data were accurately correlated using the Tammann-Tait equation, and the derived thermodynamic properties were obtained. Then, the parameters of the Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT) equation of state (EoS) for n -alkanols were optimized using the 2B association scheme. Within the experimental range, the average absolute relative deviation (AARD) between the calculated and experimental densities was <0.1%, demonstrating the applicability of the model for ultra-high-pressure volumetric calculations. This study addresses the gap in high-pressure property data for n -alkanols (C4–C7) and provides a critical experimental and modeling foundation for the development of efficient and clean marine power systems. Download: Download high-res image (351KB) Download: Download full-size image
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JCIS Open
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2026
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IF 7.5
Xi Liu,Zhao Chen,Xiaomei Pei,Binglei Song
Carbon quantum dots (CQDs) have emerged as a promising class of nanocarbons owing to their ultrasmall dimensions and highly tunable surface properties. In this study, high-performance amphiphilic sucrose-based carbon quantum dots (s-CQDs) were successfully synthesized via a facile, one-step solvothermal method tailored for enhanced oil recovery (EOR) applications. The s-CQDs were prepared by reacting sucrose with dodecylamine at a 1:1 M ratio at 180 °C for 3 h. Comprehensive characterization (TEM, FT-IR, and XPS) confirmed the formation of monodisperse, quasi-spherical nanoparticles with an average core diameter of ∼4.1 nm, effectively functionalized with hydrophilic hydroxyl and amino groups alongside hydrophobic alkyl chains. The as-prepared s-CQDs exhibited robust thermal stability up to 180 °C, and their aqueous dispersions maintained excellent colloidal stability at temperatures up to 90 °C and in highly saline environments containing up to 7000 mg L −1 of NaCl or CaCl 2 . At a target concentration of 0.3 wt%, the s-CQDs reduced the surface tension of water to 29 mN m −1 and lowered the interfacial tension (IFT) between n-decane and deionized water to 4.3 mN m −1 , demonstrating pronounced interfacial activity. Stable n-decane/water emulsions were achieved at s-CQD concentrations exceeding 0.4 wt%, displaying outstanding long-term resistance to coalescence. Furthermore, the s-CQDs significantly altered the wettability of model oil-wet surfaces, successfully reversing the water contact angle from an initial 88.0° to a more water-wet 55.6°. Given their straightforward preparation, cost-effectiveness, and superior interfacial performance, these amphiphilic s-CQDs hold strong potential as an efficient and scalable nanofluid system for chemical EOR.
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ADVANCED MATERIALS
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2026
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IF 29.1
Zhang Luo,Weijia Xiao,Bing Liu
Active colloidal systems, driven by self-propulsion and collective dynamics, offer a non-equilibrium route to soft materials. Realizing such materials hinges on creating novel active systems and deciphering their collective behavior. Here we present a new type of ring-shaped, partially-coated Pt-SiO 2 colloidal micromotor and report our finding that the sign of the surface charge plays a crucial role in determining the propulsion speed and reversing the living crystallization behavior. Our results show that negatively charged ring-shaped micromotors can achieve high propulsion speeds exceeding 20 µm s − 1 at 0.5 wt% H 2 O 2 solution, whereas positively charged rings move much more slowly. We further find that negatively and positively charged rings always exhibit opposite living crystallization behaviors: if one type can crystallize, the other cannot. We reveal that this opposite crystallization behavior stems from the consistently opposite EO flow directions, irrespective of whether the flow field is symmetric or asymmetric. Living crystallization occurs only when the inward EO flow region exceeds 50% of the ring circumference. By combining experiments and numerical simulations, we demonstrate that the sharp difference in the flow fields between oppositely charged ring-shaped micromotors originates from the different surface charge signs of the rings and the substrate.
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JOURNAL OF CATALYSIS
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2026
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IF 6
Xiaoqiang Zhang,Quanlei Wang,Chuang Wang,Junli Ren,Xinze Du,Huixiang Li,Da-Ming Gao
Efficient hydrodeoxygenation (HDO) of biomass-derived phenolics relies on the effective coupling of hydrogen activation and C-O bond cleavage. Here, we report a Ni-NiO interfacial catalyst that enables interfacial synergy by integrating hydrogenation and deoxygenation functions within a confined nanoscale interface. By tailoring the reduction temperature of NiO/Al 2 O 3 , the Ni/NiO ratio is precisely controlled, with the catalyst reduced at 400 °C exhibiting highly dispersed Ni species intimately interfaced with NiO. Mechanistic studies suggest that hydrogen dissociated on metallic Ni can spill over to adjacent NiO, generating interfacial hydrogen species and enhanced acidity that facilitate C-O bond cleavage. Meanwhile, the close proximity of Ni and NiO enables efficient coupling of the hydrogenation and deoxygenation functions, thereby promoting rapid tandem conversion at the interface and lowering the apparent activation barrier for vanillin HDO.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yongxue Chen,Xiaodong Lu,Jianping Ge
PC coatings with structural colors are fabricated by embedding method through cooperative DSDV process. • Different from traditional strategies, the embedding method adopts a new “coating before assembly” strategy. • Conformal PC coatings are prepared on 33 substrates, including boards, fabrics, inorganics, metals, plastics, and rubbers. • The embedding method works for the polystyrene-arylate, alkyd, polyurethane, and polyvinyl alcohol-based PC coatings. Colloidal photonic crystal (PC) coating has wide application in automotive manufacturing, textile dyeing, packaging and printing, cosmetics and personal care, and anti-counterfeiting materials. However, the traditional methods based on strategies of “coating after assembly” and “coating along with assembly” show poor compatibility with the substrates and polymer components. Here, a new method based on the embedding of colloidal crystals into the precoated polymer layer was developed to prepare durable PC coatings with bright and uniform structural colors. This embedding method pioneers a new synthetic strategy, which is “coating before assembly”. The coating formation is proved to follow the DSDV mechanism, which refers to the cooperative “polymer dissolution”, “liquid photonic crystal (LPC) sinking”, “polymer diffusion”, and “solvent volatilization” processes. The embedding method successfully produces conformal SiO 2 /(PS-PMMA) PC coatings with fine surface features on 33 substrates, including fibrous boards, fabrics, inorganics, metals, plastics, and rubbers, and it also works for the fabrication of alkyd resin, polyurethane, and polyvinyl alcohol-based PC coatings, which will accelerate its practical implementation in various scenarios. An embedding method following the “Coating before Assembly” strategy is developed to prepare durable PC coatings with bright and uniform structural colors. This method yields conformal coatings on diverse substrates, including fibrous boards, fabrics, inorganic materials, metals, plastics, and rubbers. Additionally, it is applicable to coatings based on acrylic resin, alkyd resin, polyurethane, and polyvinyl alcohol. Download: Download high-res image (100KB) Download: Download full-size image
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ADVANCED MATERIALS
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2026
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IF 29.1
Shutao Zhang,Jiamin Fu,Guantai Hu,Suzhe Liang,Yu Zheng,Chao Wang,Shengjie Xia,Pushun Lu,Jiaxu Zhang,Mingying Zhang,Mingfeng Wei,Jian Hong,Ziqing Wang,Zhimin Zhou,Jian Peng,Liwei Chen,Xueliang Sun,Changhong Wang
Halide solid electrolytes (SSEs) hold promise for next-generation all-solid-state batteries (ASSBs), yet scalable fabrication of halide SSE films and ampere-hour-scale all-solid-state pouch cells (ASSPCs) via slurry coating has not been demonstrated. Here, we introduce a dual-solvent supramolecular assembly strategy that precisely regulates the chain organization of a multiblock copolymer binder (SEEPS), enabling low-binder, high-viscosity slurries for uniform halide SSE film formation. Methylcyclohexane and decane are identified as chemically compatible solvents that diminish InCl 3 surface precipitation in Li 3 InCl 6 , preserving ionic conductivity. The resulting Li 3 InCl 6 /Li 6− x PS 5− x Cl 1+ x bilayer SSE film exhibits high ionic conductivity (1.26 mS/cm), mechanical robustness, and electrochemical stability. ASSBs using NCM88 cathodes and micro-silicon anodes retain 71.3% capacity after 600 cycles at 0.5 C, while the first ten-layer ampere-hour-scale halide ASSPC delivers 1.45 Ah at 0.2 C with 95.1% capacity retention over 100 cycles. This approach establishes a practical and scalable pathway for fabricating halide ASSPCs, bridging laboratory innovations and commercial deployment.
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PubMed
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ANALYTICAL CHEMISTRY
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2026
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IF 7.3
Yao Jiang,Baixue Chu,Wenzhi Ma,Min Liu,Shusheng Zhang,Dongmei Xi
Accurate disease diagnosis requires analyzing multiple biomarkers in a single sample to improve diagnostic precision and guide treatment. However, the simultaneous detection of three or more proteases in a sample, especially with a single probe, remains a major challenge. Herein, we developed a triple-response peptide probe for monitoring three proteases via a single aerolysin nanopore. The T-shaped probe contains three independent arms each with a target-specific cleavage sequence. Upon protease recognition, short peptide fragments are released and generate characteristic current signatures during nanopore translocation. The enzymes themselves are sterically excluded, ensuring signals originate solely from cleavage products. Each peptide yields a distinct signature, enabling simultaneous, label- and amplification-free quantification with detection limits extending to the femtomolar range. Integrated with a machine learning classifier, the system achieves 97.7% accuracy in signal discrimination. This strategy enables accurate and multiplexed quantification of multiple enzymes in complex biological fluids, such as serum, which is important for disease diagnosis based on liquid biopsies.
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PubMed
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ACS Sustainable Chemistry & Engineering
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2026
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IF 7.6
Haibin Gou,Yu Liu,Shuaihao Sun,Haiyun Huang,Chenguang Wang,Haiyong Wang,Yuhe Liao
Production of jet fuels from renewable biomass is key to decarbonizing the aviation sector. In this work, valorization of the aromatic macromolecule lignin in plant biomass toward monocyclic and fused bicyclic alkanes was proposed. The lignin was first depolymerized toward prop-1-enyl-substituted monomers with high selectivity (>70%) using ethanol as the solvent in the absence of external H2. Alkylation of these monomers with hemicellulose-derived 2-methylfuran using solid acids such as Amberlyst 35 generated alkylation products (yield >80%) along with a small amount of dimers. The alkylation products can be hydrodeoxygenated toward monocyclic alkanes using Ru/C and zeolites, where the product distribution can be controlled by the microporosity of the zeolite. C14 is the major product using Ru/C and mordenite (MOR). The Friedel–Crafts dealkylation of the alkylation products can occur by using Beta and Y zeolites, leading to the formation of more C9. Using the same acid catalyst (i.e., Amberlyst 35) can almost quantitatively convert these monomers toward dimers, which can be hydrodeoxygenated toward fused bicyclic alkanes in the presence of hydrogenation catalysts and zeolites. However, the product distribution can be determined by the activity of the hydrogenation catalyst. C18 was obtained with high yield (>90%) using Pd/C and zeolites such as MOR and alkaline-treated Beta zeolite (Beta-AT). However, C12 was the dominant product (yield of 77.5%) using Raney Ni and alkaline-treated Beta-AT. This work paves a new way for the production of high-density cycloalkanes from recalcitrant lignin.
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Environmental Science & Technology Letters
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2026
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IF 7.3
Zhaozhao Gao,Meng Yan,Xingjia Xiang,Qing Wang,Yucheng Wu,Xin Song,Xiangui Lin,Frank E. Löffler,Jun Zeng
Colorimetric measurements of inorganic fluoride (F–) offer a rapid screening of biodefluorination, but existing methods fall short when they are applied to growing cultures. By systematically replacing mineral salt medium components, we demonstrate that a modified HEPES/Cl–-rich medium allows colorimetric F– quantification (20–200 μM) during biodefluorination of 1-fluorodecane (FD), 4,5,5-trifluoropent-4-enoic acid (TFEA), and 4,4,4-trifluoro-3-(trifluoromethyl) crotonic acid (SFCA). Applied in a deep 96-well microtiter plate format, this approach explored the biodefluorination of these compounds in growing axenic cultures, resting cell incubations, and mixed environmental cultures. Sphingopyxis sp. strain NJF-3 and Rhodococcus sp. strain NJF-7 exhibited differential defluorination of TFEA and SFCA. Resting cells exhibited limited defluorination activity to TFEA and SFCA, but strain NJF-7 displayed higher TFEA defluorination (219 μM F–) than strain NJF-3 (39.1 μM F–), indicating a greater growth-independent defluorination capacity. Defluorination by environmentally sourced microbial communities varied, potentially reflecting differences in sample origin (water vs soil). Correlation analysis of intermediates measured in different SFCA-defluorinating cultures indicated that abiotic and biotic reactions contribute to SFCA transformation, with a β-oxidation-type pathway inferred for the biotransformation. The refined approach expands the tool box for investigating biodefluorination in microbial enrichment and pure culture studies.
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RENEWABLE ENERGY
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2026
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IF 9.1
Yuanyuan Xia,Yishuai Fu,Wenliang Wang
Expanding the range of monomers prepared by lignin depolymerization is of great importance to achieving sustainable and high-value biorefineries. However, there is a trade-off between the fast conversion technology and the slow conversion pathway from lignin to high-value chemicals. Herein, we use microwave-assisted depolymerization technology with low energy consumption and fast reaction speed, and use different nitrogen sources to achieve target liquid products. Different pretreatment strategies modify the dielectric properties of lignin, boosting liquid product conversion efficiency and enhancing biochar application value. Microwave-assisted depolymerization of ammonium paratungstate-lignin mixtures yields substantial amounts of phenols and nitrogenous compounds. Multi-physic field coupled finite element simulations and kinetic analyses revealed that the dielectric disparity between ammonium paratungstate and lignin particles under microwave irradiation triggers a potent interfacial polarization effect. This effect substantially elevates the depolymerization temperature. Additionally, the incorporation of ammonium paratungstate notably decreases the reaction activation energy from 30.15 kJ mol −1 to 25.16 kJ mol −1 , thereby enhancing the depolymerization efficiency. This approach enables the one-step conversion of lignin to nitrogen-containing monomers (pyridine, quinoline, aniline) through reactions between lignin side chains/phenolic monomers and amines, offering a viable route for lignin valorization and guiding future production of high-value lignin-derived monomers.
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危险品化学品经营许可证（带存储）