ACS Omega
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2020
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IF 2.87
Lulu Yan,Yahe Zhang,Hongyu Yan,Yu Fan,Xuxia Liu,Chao Ma,Quan Shi
CS2/N-methyl-2-pyrrolidone (NMP) could extract much more substance from coals than any other solvents. Investigation on the molecular composition of CS2/NMP extracts from lignite is significant for the understanding of high extraction yield and the clean utilization of coal. The methanol-soluble portions from lignites and CS2/NMP extracts of lignites were characterized by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry. The yield of CS2/NMP extracts from lignite was quite higher than that of methanol extracts. Furthermore, the yield of methanol-soluble portions from CS2/NMP extracts was far more than that of methanol extracts from lignite. At the level of molecular composition, the relative content of heteroatom compounds with more oxygen atoms, longer side chain, and higher condensation in the CS2/NMP extract was also higher than that in the methanol extract. Despite great difference in the yield and the relative content of components, the distributions of species, molecular weight, carbon number, and double-bond equivalent were similar to those of most organic molecules for the methanol extract and methanol-soluble portions from the CS2/NMP extract. These phenomena suggested that organic molecules with similar structure but different composition, nonuniformly distributed in the coal matrix, were released more in the CS2/NMP extract compared to the single methanol extract.
研究领域:
能源化学
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分析化学
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Bin Xu,Baobin Wang,Zhiling Du,Zilong Han,Changhai Ji,Rongting Ji,Zheng Wang,Zhiying Li,Kaixiang Jiang,Wenzhong Yang
Following the design concept of high efficiency, environmental friendliness, and stable performance, the application of an electrodeposition-capacitive deionization combined process for copper removal from high-concentration wastewater is the first time proposed in this study. As a pretreatment, electrodeposition exhibited efficient copper ions removal capacity (94.53 %) within only 80 min, and the optimal operation conditions were obtained as 75 mA/cm 2 current density, 1.5 cm electrode spacing, pH value 4, and 1000 mg/L initial copper ion concentration. The electrodeposit predominantly consisted of Cu 0 with minor copper oxide impurities was characterized and can be reintroduced into the production process as a valuable raw material. Subsequently, the wastewater underwent advanced treatment via capacitive deionization technology, resulting in the final copper ion concentration of 0.43 mg/L, which met the discharge limit of criteria (GB 39731–2020, less than 0.5 mg/L). The experimental results demonstrate that the combined process is feasible for treating high-concentration copper-containing wastewater, thereby offering a new technological pathway for the efficient wastewater treatment and resource recovery.
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JOURNAL OF MOLECULAR LIQUIDS
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2026
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IF 5.2
Fangxu Li,Qing Tang
To enhance the enrichment efficiency of copper oxide ores, calcium polysulfide (CaSx) in combination with potassium n-butoxypropyl xanthate (BPX) was applied for the sulfidization flotation of malachite in this study—marking the first reported use of this reagent system for such a purpose. Flotation experiments demonstrated that the CaSx-BPX system exhibited superior selectivity and separation performance for malachite relative to calcite and quartz, outperforming three reference systems: CaSx-Sodium isobutyl xanthate(IBX), Na 2 S-BPX, and Na 2 S-IBX. Under optimized conditions (pH = 7, CaSx dosage of 200 mg/L, and BPX dosage of 100 mg/L), the recovery of malachite, calcite, and quartz were 98.23%, 5.89%, and 2.35%, respectively. Zeta potential analyses showed a negative shift in the surface potential of malachite over the pH range of 7–12 after the addition of CaSx, followed by a further negative shift upon BPX adsorption. The XPS results further indicate that CaSx forms stable Cu(I/II)–S chelates on the malachite surface. Subsequently, the sulfided malachite chemically reacts with BPX to form C–S–Cu(I/II) chemical bonds. Contact angle measurements revealed that malachite undergoes a transition from hydrophilic to hydrophobic upon treatment with CaSx–BPX, whereas calcite and quartz retain their hydrophilic nature. This differential wettability provides a rational explanation for the high flotation selectivity achieved among the three minerals.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Xiangting Zhao,Yuyan Zheng,Meiling Chen,Xiaoqin Jiang,Wenhua Miao,Yadong Zhao,Jin Zhu,Fei Liu
In this study, cellulose was facilely dissolved in a novel solvent composed of carbon disulfide, an organic base, and organic solvent, and then regenerated to obtain dithiocarbonate cellulose. Functional fluorescent material was then fabricated by grafting poly(lactic acid) side chain and dansyl chloride (DNS-Cl) to the backbone of this cellulose derivative. The product, denoted as cellulose- graft -poly(lactic acid)/dansyl chloride (C-g-PLLA/DNS-Cl), was obtained by simply dissolving cellulose and grafting fluorescent structures. It exhibits a distinct glass transition temperature, indicating thermal processing properties. It displays yellow-green fluorescence in both solid and solution states. The fluorescence intensity increases with solution concentration; when the concentration reaches 1.0 mg/mL, the intensity begins to decrease until complete quenching, exhibiting a pronounced aggregation-caused quenching (ACQ) effect. Simultaneously, it exhibits high sensitivity fluorescent response towards Fe 3+ with a detection limit as low as 1.40 × 10 −5 M. This study provides a new perspective on the high-value utilization of cellulose based on a novel solvent.
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PubMed
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Small
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2026
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IF 12.1
Xilin Wang,Ming Yue,Rongjie Xia,Hongxiao He,Yanhe Xiao,Baochang Cheng,Shuijin Lei
2D layered transition metal thiophosphites (MPS 3 ) are promising high-capacity anodes for sodium-ion batteries (SIBs) but are plagued by poor conductivity and severe volume changes. To address these challenges, we report a corn-like multi-MPS 3 heterostructure engineered via a sophisticated MOF-on-MOF templating strategy. This unique architecture, comprising a FePS 3 /ZnPS 3 heterojunction and a conformal N-doped carbon (NC) coating, establishes an interfacial field and spatial confinement synergy that facilitates rapid ion/electron transport and ensures exceptional structural integrity. The designed FePS 3 -ZnPS 3 -C@NC anode delivers remarkable sodium storage performance: a high initial discharge capacity of 1294.5 mAh g −1 at 0.1 A g −1 and long cycling stability with 87.6% capacity retention after 1200 cycles at 2 A g −1 . Such superior performance is attributed to: (i) the elastic carbon coating, which effectively buffers mechanical strain and preserves structural stability; and (ii) the heterointerfacial synergy, which enhances charge carrier mobility and reaction kinetics. Ex situ characterizations unravel a multi-mechanistic sodium storage process, accounting for the high capacity. Density functional theory (DFT) calculations confirm that the built-in electric field at the FePS 3 /ZnPS 3 interface optimizes Na + adsorption energy and interfacial charge transfer. This study provides a generalizable design paradigm for high-performance anodes through the rational integration of architectural control and interfacial engineering.
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PubMed
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Journal of Cleaner Production
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2026
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IF 10
Mengyao Qi,Zhenkai Luo,Hang Liang,Weijun Peng,Wei Wang,Yijun Cao,Longyu Zhang,Yukun Huang
To address the technical bottleneck of declining hydrophobicity in finely ground minerals that leads to low recovery of traditional hydrocarbon oil collectors, this study utilized computational simulations to design and synthesize a novel collector. Simulation calculations showed that dodecyl xanthogenic acid (DXA-C12) had a comprehensive adsorption effect on both the “basal” and “edges” of molybdenite. Micro-flotation tests showed that DXA-C12 had significant flotation advantages for micro-fine grained molybdenite compared with the traditional kerosene and xanthate combined collector. DXA-C12 interacted with the “basal” and “edges” of molybdenite through hydrophobic and chemical forces, respectively. The DXA-C12 carbon chain drove the interaction with the “basal” and adsorbed in a tiled form. In contrast, C=S supplied electrons to the Mo atoms in “edges”, forming adsorption in an upright form. For the actual micro-fine grained molybdenum ore with a particle size of −38 μm accounted for 97 % and Mo grade of about 4.00 %, using DXA-C12 as the collector could obtain the concentrate with Mo grade and recovery of 39.099 % and 99.68 %, respectively. The study provided a novel collector for micro-fine grained molybdenum ore, and had an important reference significance for the development of other new types of collectors.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 13.2
Liang Ma,Xing-Yu Lei,Qi Xu,Ya-Fu Li,Yu-Hao Li,Peng-Fei Chen,Jian-Cai Chen,Hui-Jing Li,Yan-Chao Wu
The weak static antifouling performance and uncontrollable antifoulant release of silicone coatings remain persistent challenges. Inspired by the phytoalexin-mediated defense of Pterocarpus santalinus , which produces pterostilbene (PTE) to resist pathogen invasion, this paper reports a natural product-based synergistic antifouling coating that integrates active antibacterial and passive anti-adhesion functions. PTE is covalently grafted into a room-temperature-vulcanized silicone rubber (RTVS) network via reversible addition–fragmentation chain transfer (RAFT) polymerization, enabling controlled release through hydrolyzable covalent linkages and forming an active antibacterial layer. Concurrently, the incorporation of dodecafluoroheptyl methacrylate (12FMA) reduces the surface energy to 20.34 mJ·m −2 , creating a passive anti-adhesion layer that minimizes marine organism attachment. Importantly, A key novelty is multi-scale modeling confirms that the antifouling agent release follows Higuchi drug release model. Further molecular simulations reveal that a fraction of released molecules can be recaptured at the coating–water interface, forming a locally enriched region that maintains a high interfacial biocide concentration and explains the coating's long-term static antifouling efficacy; this newly identified interfacial zone is termed the “enrichment layer”. The coating achieves 98.36% anti-algal and 95.47% antibacterial efficiency, maintains excellent durability in a 240-day static marine field test, and shows favorable eco-safety in zebrafish-based toxicological evaluation. Overall, this work provides both a mechanistic insight and a practical strategy to overcome uncontrolled leaching and poor static antifouling in traditional silicone coatings.
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Journal of Energy Storage
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2026
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IF 9.8
Wei Kang,Jiayue Li,Chengzhu Yi,Meng Jing Jin,Jing Liu,Hongruo Ma,Renqian Tao,Zhenxing Zhang,Xiaojun Pan,Guowen Sun,Gengzhi Sun,Jin Yuan Zhou
Nanoparticle-sized, atomically distributed bimetallic catalysts have attracted extensive attention in lithium–sulfur batteries (LSBs) due to their abundant active sites, tunable electronic structures, and superior catalytic performance. However, the relationship between active-site distribution and battery performance, particularly its effect on polysulfide conversion and cycling stability, remains unclear. Here, x NiCo@CNF (0.125 ≤ x ≤ 1.0) bimetallic catalysts with tunable active-site distributions were synthesized via electrospinning, constructing NiCo bimetallic with nanoparticle-to-atomic-scale distribution and diverse attachment site configurations. Systematic studies reveal a site-dependent mechanism: large nanoparticles offer strong polysulfide adsorption but limited active sites, slowing reaction kinetics; atomically dispersed particles provide numerous sites, enhancing conversion efficiency; an intermediate active-site density achieves an optimal balance between adsorption strength and site density, promoting uniform electron transfer, accelerating LiPS redox reactions, and facilitating Li 2 S nucleation. As a result, atomically uniformly distributed 0.25NiCo@CNF exhibits optimal performance, delivering a higher initial discharge capacity of 1175.6 mAh g −1 at 0.1C and excellent rate capability (650.8 mAh g −1 at 5.0C). While maintaining stable cycling under high sulfur loading and wide temperature ranges (−30–50 °C). Overall, this work elucidates the site-dependent catalytic mechanism of bimetallic alloys in LSBs, providing a guideline for the rational design of high-performance sulfur cathodes.
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SOLID STATE SCIENCES
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2026
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IF 3.6
Chengyang Zhang,Guoqiang Xia,Chenxi Sun,Mengmeng Zhen
Se-doped high-entropy MXene@CNT with abundant oxygen vacancies is fabricated as bifunctional electrocatalyst. • The composite accelerates polysulfide redox and suppresses Li dendrites via optimized electronic and 3D conductive structure. • Cells achieve ultra-stable long cycling, high sulfur loading performance and a 2.0 Ah pouch cell. Lithium–sulfur batteries (LSBs) hold exceptional promise for high-energy-density energy storage, yet their practical deployment is severely hindered by sluggish sulfur redox kinetics, polysulfide shuttling, and uncontrolled lithium dendrite growth. High-entropy MXene exhibits unique compositional diversity and synergistic electronic effects, but their catalytic activity remain insufficient for robust polysulfide regulation. Herein, we develop a selenium-doped high-entropy MXene@CNT (Se-HE-MX@C) bifunctional electrocatalyst with Se-induced vacancy defects to synergistically regulate cathode and anode redox reactions. Se-doping generates abundant cation vacancies and optimizes the electronic structure, strengthening polysulfide chemisorption and lowering the energy barrier for polysulfide conversion. The CNT interwoven network constructs a continuous 3D conductive pathway, accelerating electron/ion diffusion and mitigating structural degradation. Electrochemical and in-situ characterizations reveal that Se-HE-MX@C significantly promotes Li 2 S nucleation/decomposition, enhances Li + diffusion kinetics, and induces uniform lithium deposition. As a result, the LSB with Se-HE-MX@C-modified separator exhibits excellent rate performance and ultralong cycling stability (a low-capacity decay rates of merely 0.047% per cycle after 700 cycles at 1.0C). Moreover, The Se-HE-MX@C-based pouch cell delivers an ultra-high capacity of ∼2.0 Ah. This work elucidates the structure–activity relationship between defect engineering, high-entropy regulation, and bifunctional electrocatalysis, offering a rational design principle for advanced electrocatalysts in high-performance LSBs. Download: Download high-res image (273KB) Download: Download full-size image
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ADVANCED MATERIALS
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2026
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IF 29.1
Xuan Yin,Nini Feng,Chang Liu,Heyi Li,Jianxiong Li,Shuo Yang,Xupin Zhuang,Bowen Cheng
Passive radiative cooling offers a sustainable pathway for thermal management by minimizing solar absorption while maximizing mid-infrared (MIR) emission through the atmospheric transparency window. However, parasitic heat gain substantially compromises its net cooling efficiency. Here, we report a reversible xanthation-mediated strategy to fabricate hierarchical SiO 2 @cellulose nanofiber aerogels that synergistically integrate broadband solar reflectivity, high MIR emissivity, and low thermal conductivity. The xanthation chemistry enables uniform, in situ anchoring of ∼300 nm SiO 2 nanospheres along nanofibers, creating a distinctive ‘pearl-necklace’ morphology, while directional ice-templating further constructs lamellar hierarchical porous networks that suppress nonradiative heat transfer. The optimized aerogel exhibits an average solar reflectance of 95.6%, a MIR emissivity of 95.3% within the 8–13 µm atmospheric window, and an ultralow thermal conductivity of 0.028 W m −1 K −1 . Under 1000 W m −2 solar irradiance, it achieves a time-averaged subambient cooling of 3.7°C and a net temperature reduction of 24.9°C compared to polystyrene foam, while extending refrigeration thermal cycling by 47.3%. This work provides a scalable material design framework for monolithic integration of optical selectivity and thermal insulation, offering a promising sustainable solution for energy-efficient buildings, cold-chain logistics, and next-generation thermal management systems.
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POLYMER
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2026
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IF 5.1
Xiaoqiang Luo,Zitao Yang,Anjia Zheng,Zhongte Pei,Chuanxi Wang,Jiaming Zhang,Qianyu Wang,Rui Hu,Cancan Zhang,Yaqiong Zhang,Chongxiao Ge,Feng Jiang
Sustainable and functional elastomers derived from renewable resources are highly desirable as alternatives to conventional petroleum-based materials. Herein, a series of chitin-based fluorescent elastomers, Chitin- graft -poly(7-acryloyloxy-4-methyl coumarin- co - n -butyl acrylate) (Chitin-g-P(AMC- co -BA)) copolymers, were successfully synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. In this design, the coumarin derivative AMC was used as the hard and fluorescent segment while BA was selected as the soft segment to graft from the rigid chitin backbone to construct novel bio-based elastomers. By systematically varying the AMC/BA feed ratios and chitin contents, the glass transition temperature ( T g ), mechanical performance, adhesion strength, and fluorescent properties of the Chitin-g-P(AMC- co -BA) could be precisely tailored. The elastomers demonstrated tunable tensile strength (up to 12.2 MPa) and extensibility (up to 1989%). Furthermore, these chitin graft copolymers possess excellent adhesion performance and show strong blue fluorescence under UV irradiation, benefiting from the presence of the coumarin structure. This work provides an effective grafting strategy to develop multifunctional, sustainable elastomers from chitin and bio-based monomers, offering promising potential for applications in adhesives, flexible materials, and fluorescent functional systems.
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JOURNAL OF MATERIALS SCIENCE
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2026
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IF 4.4
Zhang Yong,Jiao Gongao,Ding Zuozhe,Zhang Dongzhi
Hydrogen Sulfide (H 2 S) gas can cause physiological discomfort at low concentrations and is lethal at high concentrations. It is one of the major pollutants in the petrochemical industry. In this article, carbon-modified WO 3 nanoparticle gas-sensitive sensing materials were synthesized using the hydrothermal method, and high-performance H 2 S gas-sensitive sensing devices were fabricated. At a doping ratio of 2:3, the optimal working temperature for the carbon-modified WO 3 (C-WO 3 ) nanoparticles is 160 °C. It exhibits a response value of 23.7 for 10 ppm of H 2 S gas, with a response and recovery time of 6 s/64 s. The material demonstrates excellent selectivity, repeatability, and long-term stability for detecting H 2 S gas. These outstanding performance characteristics make it a promising candidate for H 2 S gas detection applications. This modification enhances the material’s gas-sensing performance and its resistance to interference. Finally, first-principles calculations revealed the mechanism behind the improvement in the H 2 S gas-sensing performance of carbon-modified WO 3 sensing materials.
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