FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
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2025
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IF 1.8
Baojin Yang,Shimin Dang,Haichao Li
In this study, carbon nanorods (CNRs) were synthesized via a surfactant@salt self-assembly strategy, overcoming the limitations of conventional carbon nanomaterials in morphology control. Sodium dodecylbenzenesulfonate (SDBS) served as the carbon precursor, while sodium chloride (NaCl) acted as a structural spacer to guide nanorod formation. The synthesized SDBS@NaCl CNRs were systematically characterized by SEM, XPS, FT-IR, XRD, and Raman spectroscopy. The results demonstrate that amorphous carbon nanorods with a partially graphitized ordered structure have been successfully synthesized. The CNRs feature dominant oxygen-containing functional groups (C–O, C = O), uniform diameters (∼60 nm), and tunable lengths (1200 ± 400 nm), achieving an exceptional L/D ratio of up to 30. This work not only validates the efficacy of the salt-mediated self-assembly approach but also underscores its potential for designing advanced carbon nanostructures with tailored dimensions and surface properties, paving the way for multifunctional applications in energy storage and catalysis.
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JOURNAL OF THE TEXTILE INSTITUTE
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2025
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IF 1.5
Yameng Xiao,Hualei Liu,Chen Sun,Xinran Han,Roman A. Surmenev,Xia Yin,Yi-Tao Liu,Jianyong Yu,Bin Ding
Porous carbon materials are widely used in adsorption and catalysis due to their highly adaptable pore structures and high specific surface areas. Nevertheless, porous carbon materials still face the bottleneck problem of mechanical strength and flexibility. Herein, we construct a porous carbon nanofiber membrane composed of beaded fibers and traditional straight fibers, demonstrating exceptional flexibility and efficient formaldehyde adsorption performance. Specifically, we regulate polyacrylonitrile solutions with different concentrations via a dual-nozzle electrospinning technique, followed by using controllable pre-oxidation and carbonization progress, obtaining flexible carbon nanofiber material with a hierarchical micro/mesoporous and beaded network structure. The softness of porous carbon nanofiber membrane is comparable to nonwoven fabrics and significantly lower than tissue paper, and it goes through 1000 buckling cycles at 50% deformation without damage. Furthermore, dynamic impregnation with lysine endows materials with synergistic physical and chemical adsorption, making its formaldehyde adsorption capacity reached 3.44 mg/g under ambient conditions, which shows great performance improvement compared with unimpregnated materials (0.8 mg/g). In this sense, this material overcomes the traditional trade-off between rigidity and adsorption performance in carbon materials, offering a possible solution for indoor formaldehyde purification.
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COMBUSTION AND FLAME
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2025
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IF 6.2
Shubao Song,Jiankun Shao,Lin Zhang,Jiachen Sun,Cheng Wang,Jun Yi,Zhiqiang Gao,Jianli Feng
Acetone (CH 3 COCH 3 ) is a key intermediate and a representative oxygenated volatile organic compound (OVOC) relevant to biofuels, atmospheric chemistry, and advanced propulsion systems. In the current study, shock tube pyrolysis experiments for acetone/Ar mixtures were performed over the temperature range of 1300–1952 K at atmospheric pressure, utilizing laser absorption diagnostics at 4854 nm and 3175 nm to monitor the temporal evolution of carbon monoxide (CO) and methane (CH 4 ), respectively. In addition, ignition delay time (IDT) measurements were conducted in a shock tube for CH 3 COCH 3 /Ar/O₂ mixtures at three equivalence ratios ( φ = 0.5, 1.0, and 2.0) over the temperature range of 1274–1601 K and 1.0 atm. The CO time-history data provided direct constraints on the unimolecular decomposition reaction R1 (CH 3 COCH 3 (+M)=>CH 3 CO + CH 3 (+M)), yielding a rate constant of k R1 (1304–1952 K, 1.0 atm) = 9.0 × 10 13 exp (−66,500 cal/mol/ RT ) s⁻¹, with an uncertainty of +28.7 %/−28.2 %. Additionally, CH 4 time-histories and IDTs measurements combined with sensitivity analysis were employed to refine the H-abstraction reactions R2 (CH 3 COCH 3 + CH 3 <=>CH 3 COCH 2 + CH 4 ) and R3 (CH 3 COCH 3 + H<=>CH 3 COCH 2 + H 2 ), respectively. A detailed kinetic model of acetone consisting of 41 species and 284 reactions was developed based on the FFCM-1 framework and optimized skeletal sub-model of acetone with updated rate constants of R1, R2 and R3. Validation against a wide range of literature data, including IDTs, laminar flame speeds and speciation data from literature, demonstrates the robustness and accuracy of the optimized kinetic model. This work highlights the critical role of laser-based diagnostics in resolving key elementary reactions and illustrates the advantages of compact, well-calibrated kinetic models for high-temperature acetone combustion research.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2025
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IF 4.6
Mingming Dong,Shuyong Yang,Peng Zhou,Yue Gao,Anshun Wang,Shenghui Tu
The accumulation of antibiotics in aquatic ecosystems poses a serious threat to the environment and to human health. Tetracyclines (TC) account for a significant proportion of antibiotic residues worldwide. In order to overcome the limitations of conventional degradation methods, we created a three-component S-scheme heterojunction consisting of BiVO 4 /MWCNTs@NH 2 -UiO-66 (Zr) using a two-step solvothermal process. This synergistic integration utilises: (i) MWCNTs as electron transport bridges; (ii) NH 2 -UiO-66 (Zr) for high TC adsorption (surface area of 931.86 m 2 g −1 ); and (iii) BiVO 4 for visible light harvesting. This architecture broadens light absorption, reduces charge recombination and enables dual-pathway Reactive Oxygen Species (ROS) generation. Under visible light, the optimised catalyst achieves 95.2 % TC degradation within 90 min–7.73 times faster than pristine BiVO 4 (k = 0.02721 vs. 0.00352 L mg −1 ·min −1 ). Radical trapping and EPR analyses confirm ·O 2 − and h + as the dominant species, while LC-MS reveals three degradation pathways. With 85.3 % activity retention after five cycles, this work provides a blueprint for the design of efficient, antibiotic-mineralising photocatalysts.
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Journal of Cleaner Production
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2025
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IF 10
Yunhao Pan,Wei Wang,Tiancheng Zha,Yibo Zhang,Xunming Tian,Yanan Zhu,Dongmei Liu,Aiwen Wang,Darren Delai Sun
Addressing the persistent bottlenecks of low efficiency, high costs, and complex fabrication in large-scale oil-in-water emulsion separation, especially for submicron emulsions where environmental compatibility and performance further degrade, this work introduces a cost-effective, biomass-derived separation layer, a straw-based gel membrane (SBGM), that emphasizes green design and functional integration. Fabricated via simple straw pretreatment and surface modification under solvent-free conditions, the SBGM is produced through an entirely green and straightforward route: one-step regeneration of straw cellulose to form gel spheres and a supporting matrix, followed by surface coating with a blended PVA/TiO 2 functional layer. Featuring a lotus-leaf-inspired bionic structure and abundant hydrophilic groups, the membrane exhibits superhydrophilicity (WCA = 0°) and underwater superoleophobicity (UOCA = 162°), together with exceptional durability and stability against acids, alkalis, and extracellular polymers in wastewater. Critically, it delivers over 99 % separation efficiency across diverse submicron oil-in-water emulsions and maintains stable performance over repeated cycles, with a flux recovery rate of approximately 90 % and a fouling deposition ratio of approximately 30 %. Moreover, the photosensitive properties of TiO 2 confer superior hydrophilicity and self-cleaning capability, enabling the SBGM to sustain over 99 % separation efficiency even when treating real kitchen wastewater. Collectively, these advances markedly enhance the SBGM's practical potential for submicron oil-in-water emulsion separation.
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Journal of Energy Storage
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2025
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IF 9.8
Xuyeke Chen,Xuefeng Shao,Yuxiang Zhang,Binrui Wang,Yanping Yuan
The flexible thermal energy storage using supercooled phase change materials (PCMs) allows thermal energy storage lasting flexible periods up to months and release when heat is on demand. As an essential part of latent heat retrieval, the crystallization triggering techniques were not fully investigated. The present work deals with the bubbling-triggered crystallization. Special attention is paid to the gas flow rate and bubble size effects. Xylitol, as a familiar polyalcohol, is screened as an energy storage medium with persistent supercooling. It is found that the estimated diameters of primitive and detached bubbles show an overall increasing trend with gas flow rate and gas tube size. Bubbling-triggered crystallization behavior is concerned with the bubbling conditions. A full crystallization probability was obtained with a 5 mm gas tube among the parallel tests. The crystallization temperature seems independent of gas flow rate. Both the minimum average crystallization durations and bubbling induction durations were obtained with a gas flow rate of 500 ml/min. However, the performance of bubbling agitation is not acceptable due to the long induction duration and apparent standard deviations. Under the guidance of the secondary nucleation mechanism, a coupled technique of bubbling with seeding was introduced to sufficiently trigger crystallization. The required induction duration is only 21 % of that with bubbling alone. The triggering performance was also improved, indicated by the raised crystallization temperature and accelerated crystallization rate. The experiment reproduction was greatly improved as well. The obtained results help to understand the bubbling-triggered crystallization of supercooled PCMs and to guide the gas injector design of a flexible thermal energy storage system.
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MINERALS ENGINEERING
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2025
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IF 5
Qiuyue Sheng,Zhen Li,Wenjing Feng,Yuxuan Yang,Zhanglei Zhu,Ningning Zhang,Wanzhong Yin
As one of the main copper oxide minerals, the strong surface hydrophilicity induces the low recovery of malachite and decreases the utilization efficiency of copper metal. In this work, the interface hydration structure of malachite and regulation mechanism by bis(2-ethylhexyl)phosphate (D2EHPA) were revealed via density functional theory (DFT) calculations, molecular dynamics (MD) simulations, X-ray photoelectron spectroscopy (XPS) analysis, contact angle and Zeta potential measurements. Flotation tests and contact angle measurements showed that D2EHPA exhibited excellent concentration selectivity for malachite against muscovite and quartz, enhanced the malachite recovery to 90.65 % with the dosage of 50 mg/L at pH 7.0, and the contact angle of malachite increased from 23.0° to 111°. Zeta potential analysis confirmed the selective adsorption of D2EHPA on malachite surface, electrostatic attraction occurred between D2EHPA and malachite surface when pH < 8.0. XPS analysis and DFT calculations further confirmed the adsorption of D2EHPA on malachite surface. Moreover, the adsorption of D2EHPA mainly via the chemical bonding between O1 (P=O), O2 (P-OH) and the Cu on malachite surface. MD simulations revealed that the average D2EHPA molecule interaction energy with malachite (−2 0 1) surface was −36.522 kJ/mol, increased the interaction energy of H 2 O on malachite (−2 0 1) surface from −1.293 kJ/mol to −0.824 kJ/mol, decreased the number density of H 2 O molecule towards malachite (−2 0 1) surface from 0.18 Å -3 to 0.12 Å -3 , induced hydrophobicity of malachite surface.
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MINERALS ENGINEERING
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2025
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IF 5
Liwen Fu,Fen Jiao,Qian Wei,Zheyi Zhang,Pan Gong,Chenyu Fan,Tao Wei
In the present investigation, ethyl xanthate (SEX) was initially utilized as a collector, revealing a marked decrease in the flotation recovery of pyrrhotite attributable to surface coverage by serpentine slimes. To overcome this challenge, three polystyrene nanoparticle collectors—namely PS, PS-VI, and PS-MVT—were synthesized through emulsion polymerization. Flotation experiments demonstrated that all three nanoparticle effectively mitigated the detrimental impact of serpentine coating on pyrrhotite flotation, with PS-VI exhibiting the most pronounced performance. Subsequent analyses involving adsorption capacity measurements, scanning electron microscopy (SEM), and fourier transform infrared spectroscopy (FT-IR) were conducted to elucidate the adsorption behavior of PS-VI on pyrrhotite surfaces. Findings indicated that, in the presence of serpentine coatings, the positively charged PS-VI nanoparticles diminished the extent of serpentine coverage and adsorbed within the interstices of the serpentine layer via a combination of electrostatic and chemical adsorption mechanisms. Bubble collision experiment shown that this adsorption behavior facilitated the formation of the three-phase contact line (TPCL) on pyrrhotite surfaces, thereby enhancing the recovery of pyrrhotite compromised by serpentine coatings while concurrently reducing the entrainment of serpentine.
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PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Ziwen Shi,Ciyang Zhang,Jiayi Shan,Fei Ying,Keren Lu,Qingli Hao,Mingzhu Xia,Xifeng Xia,Wu Lei
Considering the massive damage and substantial economic losses caused by metal corrosion, it is extremely urgent for researchers to develop more high-performance anti-corrosion coatings. Herein, an intelligent anti-corrosion epoxy coating system integrating active protection and fluorescence self-monitoring capabilities has been developed. This system utilizes mussel-inspired boron nitride nanosheets (BNNS) as multifunctional nanocontainers loaded with rhodamine hydrazide (R1) fluorescent probes. The mesoporous polydopamine (mPDA) modification improves the dispersibility of BNNS, and the prepared nanocontainer on this basis combines the excellent barrier performance of BNNS itself and the corrosion inhibition effect of mPDA and R1, enhancing the long-term anti-corrosion performance of the coatings. EIS test demonstrated that after 60 days of immersion in a 3.5 wt% NaCl solution, the BNNS-mPDA@R1 coating exhibited an impedance modulus of 7.75 × 10 10 Ω·cm 2 . Furthermore, the R1 probe generates a fluorescence signal by capturing the iron ions generated during early corrosion, enabling in situ self-detection of corrosion. The chelation-enhanced fluorescence(CHEF) mechanism of R1 for iron ions was verified through solid/liquid fluorescence spectra and quantum efficiency tests, demonstrating that R1 exhibits outstanding fluorescence-based self-monitoring capabilities, enabling in situ visualization and early-stage warning of coating degradation. In summary, this study provides novel insights into the design of multifunctional epoxy coatings that simultaneously achieve corrosion protection and self-warning, effectively promoting the development of the multifunctional coatings.
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MINERALS ENGINEERING
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2025
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IF 5
Xiaoju Li,Junxia Yu,Peng hui Zhang,Xue fen Liu,Yun Wu,Zhenyue Zhang,Xiaodi Li,Chunqiao Xiao,Ruan Chi
In-situ leaching with (NH 4 ) 2 SO 4 is widely employed for rare earth the separation and extraction, yet residual ammonium salts readily adsorb onto clay minerals and are prone to elution, threatening aquatic systems. Conventional ammonium removal induces clay swelling upon water absorption, resulting in poor ore permeability and slope instability. This study investigates a K/Mg/Na ternary compound eluent designed to suppress tailings expansion during ammonium removal and clarifies its inhibitory mechanism. Compared with single or binary eluents, the ternary formulation exhibited superior ammonium removal, and the optimized composition (0.1 mol/L, ratio 5:6:4) markedly improved ore body stability. The eluent reduced the zeta potential of clay minerals from −13.2 mV to nearly 0 mV, thereby diminishing electrostatic repulsion. Under identical conditions, tailings treated with the compound exhibited 61.3 % less expansion than untreated controls or samples exposed to conventional leaching agents. Mechanistic analysis indicates that the ternary eluent neutralizes surface charges, compresses the electric double layer, and mitigates inter-crystalline repulsion within clay minerals, stabilizing hydration and suppressing expansion. This approach improves the ammonium leaching efficiency, mitigates environmental risks, and strengthens mining safety.
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APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Jiandong Zuo,Zhao Liu,Chaoyun Luo,Guangliang Gary Liu
Colorless polyimides (CPIs) have emerged as crucial substrate materials for OLED displays. Polythioetherimide (PTEI) materials with sulfur atoms, demonstrate superior optical property, thermal stability and solubility compared with conventional polyimides. In this work, two types of soluble PTEI films were synthesized via a thiol-ene click reaction. By adjusting the molar ratio of titanium or zirconium n-butoxide to PTEIs, two series of PTEI-based nanohybrid films (PTEIs-Ti-X% and PTEIs-Zr-X%) were fabricated with 4–12 wt% of TiO 2 or ZrO 2 . SEM and XRD analyses confirmed homogeneous dispersion of the inorganic components. The hybrid films exhibited high thermal stability, with 5 % weight loss temperatures (Td 5 ) reaching 342 °C and 331 °C, and glass transition temperatures (T g ) ranged between 189–225 °C and 184–229 °C for the Ti- and Zr-containing hybrids, respectively. They both displayed low thermal expansion coefficients (CTE), indicating outstanding dimensional stability. Optically, the refractive index at 633 nm could be tuned from 1.6920 to 1.7341 for Ti hybrids and from 1.6867 to 1.7247 for Zr hybrids. Transparency measurements at 450 nm remained above 75 % for Ti-based films and reached up to 89 % for Zr-based films. Overall, PTEI hybrid films exhibit a well-balanced combination of properties for high-performance optical and display applications
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PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Chencheng Lv,Xiaoye Bi,Yunpeng Wang,Dong Xue,Zexiong Li,Tianyang Li,Tao Zhao
Superhydrophobic textiles attract significant interest for diverse applications. However, silane coupling agents and polydimethylsiloxane utilized in hydrophobic textiles exhibit limited applicability, poor hand feel, inadequate moisture and air permeability, along with environmental and health concerns. To broaden the applicability and enhance the safety of hydrophobic agents, this work synthesizes Alkyl bis(diaryl)diazomethanes. Upon thermal activation, the bis(diaryl)diazene groups generate highly reactive carbene intermediates that react with X-H bonds (X = C, O, N) in cotton, polymer and silk fibers to form stable C-X bonds (X = C, O, N), resulting in a hydrophobic coating on the fiber surface. Concurrently, the dual-carbene design increases reactive sites on the fiber surface, enhancing binding affinity. The introduction of long-chain alkyl groups replaces fluorine-containing and silicon-containing groups to reduce the fiber surface energy. Furthermore, Alkyl bis(diaryl)diazomethane is observed to undergo agglomeration during processing and self-crosslink into nanostructures on the fiber surface, consequently enhancing the roughness of the hydrophobic coatings on the fiber surface. The modified fabrics exhibited water contact angles (WCA) >150° and sliding angles (SA) <10°, confirming superhydrophobic. While retaining the original hand feel, moisture and air permeability, the modified fabrics exhibited exceptional soap washing fastness, rubbing resistance, chemical stability, superior anti-fouling properties, and self-cleaning functionality, along with enhanced mechanical properties. This modification strategy exhibits substantial market potential in the hydrophobic textiles sector.
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