JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Yanfen Liu,Wei Fan,Yu Bai,Zhicheng Yi,Baixu Zhu,Tiexiong Su
To improve the thermophysical performance of hafnate ceramics, we designed and synthesized two innovative high-entropy rare-earth hafnate ceramics, namely (La 0.2 Nd 0.2 Sm 0.2 Eu 0.2 Gd 0.2 ) 2 Hf 2 O 7 and (La 0.2 Nd 0.2 Sm 0.2 Gd 0.2 Yb 0.2 ) 2 Hf 2 O 7 . The factors influencing their thermophysical properties were illustrated. Both ceramics exhibited a pure pyrochlore structure and displayed a favorable long-term phase stability at high temperature. Compared with the single-component La 2 Hf 2 O 7 , the high-entropy (La 0.2 Nd 0.2 Sm 0.2 Gd 0.2 Yb 0.2 ) 2 Hf 2 O 7 material exhibited superior mechanical properties, including enhanced hardness (11.77 ± 0.33 GPa) and fracture toughness (2.23 ± 0.12 MPa·m 1/2 ) values, in addition to a high thermal expansion coefficient (11.1 × 10 −6 K −1 at 1100 °C) and a low thermal conductivity (1.31 W·m −1 ·K −1 at room temperature). The significantly higher thermal expansion coefficient of this ceramic is primarily attributed to the reduced electronegativity difference between its cations and anions, as well as its lower Debye temperature. Furthermore, the large mass and radius differences among the doped cations serve as key phonon scattering sources, effectively lowering the thermal conductivity without compromising the structural stiffness of the material. This work clarifies the pivotal role of elemental diversity and ionic size mismatch in synergistically modulating the thermophysical properties of hafnates, offering a novel material design paradigm for advanced thermal barrier coatings.
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高影响因子
WATER RESEARCH
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2025
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IF 12.4
Huihui Chen,Gang Guo,Haibo Li,Guanghao Chen,Jie Ma
With global phosphorus depletion, a novel strategy for phosphorus recovery from phosphorus-laden wastewater combined with phosphogypsum recycling to form hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 ) via sulfur-metabolizing bacteria was recently developed. However, enhancing recovery efficiency and reducing costs in complex wastewater systems remain key challenges, primarily due to variations in binding energy and impurity species within waste-gypsum from different sources. Therefore, the effects of three waste gypsum types (phosphogypsum [PG], titanium gypsum [TG], and flue gas desulfurization gypsum [FGD]) on recovery efficiency and mechanisms were evaluated/elucidated, with analytical-grade CaSO 4 ·2H 2 O (ARG) as the reference material. Results revealed that waste gypsum selection is pivotal for efficient phosphorus recovery in sulfur-metabolizing microbial systems. Although a negative correlation was observed between phosphorus recovery efficiency and gypsum stability (FGD > TG > PG > ARG), deviations from this trend occurred due to the specific impurity composition of the waste gypsum. TG, containing abundant Fe impurities, inhibited sulfur-metabolizing bacterial activity and impeded Ca-P precipitation. Despite intermediate stability, PG emerged as the optimal substrate, achieving 62.86% phosphorus recovery efficiency. This superior performance was attributed to PG’s phosphorus-containing impurity species, which actively promoted Ca-P formation (72% proportion in sediments). Final economic evaluation demonstrated that utilizing PG as the treatment additive for wastewater phosphorus recovery achieved optimal waste gypsum valorization, delivering a net economic benefit of $1.73 per ton of wastewater - significantly higher than other gypsum types ($0.89-1.30 per ton).
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Donghua Wang,Zhiyu Dan,Chengxiang Tian,Ming Jiang,Shuo Zhou,Geng Chen,Wensheng Yan
Developing highly efficient electrocatalysts to effectively address redox kinetics and the shuttle effect in lithium‑sulfur (Li-S) batteries remains a formidable challenge. Herein, we elaborately engineer an novel heterostructures electrocatalysts with ultra-thin Nickel hydroxide (Ni(OH) 2 ) nanosheets anchored in a graphene mesh (rGO@Ni(OH) 2 ) via a general electrostatic self-assembly strategy. This configuration can function as a highly conductive network and offer abundant active sites and catalytic surfaces. Extensive kinetic techniques combined with a convergence of density functional theory (DFT) calculations collectively decipher that interpenetrated nano-hetero-interfacing of vertically oriented Ni(OH) 2 nanosheets coupling of graphene mesh largely trigger a redistribution of electrons due to the strong interfacial interactions, resulting in more optimized adsorption energies of the polysulfide (LiPSs), and significantly promoting the LiPSs bidirectional catalytic transformation kinetics. Consequently, the rGO@Ni(OH) 2 integrated separator achieves consolidated uniform lithium deposition (surprisingly stable cycle at 0.5 mA cm −2 for up to 1000 h). The cell equipped with rGO@Ni(OH) 2 separator exhibits a high initial capacity of 1318 mAh g −1 at 0.1C and exceptional durability. More encouragingly, the rGO@Ni(OH) 2 based pouch cells sustain a promising discharge capacity of 485 mAh g −1 (257 mAh) following 100 cycles at 0.2C. This research significantly advances the comprehension of the catalysis mechanism with nano-heterointerfaces in modulating sulfur redox pathways.
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高影响因子
Additive Manufacturing
·
2025
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IF 11.1
Junli Liu,Shipeng Zhang,Lucen Hao,Bo Wu,Kaiyin Zhao,Chi Sun Poon
Carbon dioxide (CO 2 ) has been increasingly applied to modify the fresh and rheological properties of cement mortars and concrete, enhancing the mortars’ mechanical properties through CO 2 capture. For 3D printing, most research has adopted the 1 K (one-component) printing system for CO 2 -integrated cement mortar prepared by batch mixing. In contrast, limited work has been conducted on mortars subjected to CO 2 flash mixing in the 2 K (two-component) system, where pumped fresh mortar was mixed with continuously injected CO 2 within a timeframe of seconds during secondary mixing. In this paper, we report the development of a novel low-carbon cement mortar mixture consisting of ordinary Portland cement (OPC), ground granulated blast furnace slag (GGBS) and calcium hydroxide (CH) in binders that exhibited instant change in rheological properties and rapid stiffening when subjected to CO 2 flash mixing. The rheological properties of the CO 2 -mixed mortar improved with increasing proportions of GGBS and CH in the mortar mix. In-situ chord length measurements suggested that the improved rheological properties of the mortar after CO 2 flash mixing were related to the rapid growth of fine CaCO 3 crystals, driving subsequent particle flocculation. The instant flocculation was primarily attributed to electrostatic attraction between particles with opposite surface charges in the OPC-GGBS-CH system induced by CO 2 flash mixing.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Weiyu Zhao,Qilei Zhao,Shuo Ren,Bojun Zou,Mengqi Chen,Zeyu Ren,Dongming Song,Yanchun Li,Dazhi Liu
By exploiting the immiscible nature of the aluminum–bismuth (Al Bi) binary system, spherical AlBi10 alloy particles with a unique particle-embedded network structure were successfully synthesized using a high-speed disc-shaped centrifugal atomization method. In this structure, nanoscale Bi particles are embedded within a micrometer-scale Al matrix, forming a continuous network that subdivides the Al grains into nanocrystalline domains along grain boundaries. The embedded Bi particles, undergo micro-explosions during combustion, promoting the dispersion and rapid reaction of the Al particles. In terms of thermal behavior, the oxidation exothermic peak of the AlBi10 alloy occurs at 1000.7 °C, which is 16 °C lower than that of pure Al. The oxidation weight gain reaches 64.03 wt%, representing 7.02 times that of pure Al. Combustion performance tests revealed that the AlBi10 alloy–KP–PF sample exhibits excellent reactivity. Under ambient air, complete combustion is achieved within 3.0 s, with an average burning rate of 2.93 mm/s. Under confined conditions, the peak pressure reaches 7.52 MPa, and the pressure rise rates increases to 67.02 MPa/s. These results demonstrate that the AlBi10 alloy particles, owing to their distinctive structure, exhibit significantly enhanced reactivity and combustion efficiency compared to micrometer-sized Al particles. Therefore, AlBi10 alloy particles show great promise for applications in energetic materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Yi Jiang,Ruixiang Xu,Wanqiang Liu,Ruifeng Zheng,Zhenyu Hu
In this study, we discovered that Cu 31 S 16 , when used as the cathode in a battery, exhibits a significant “ineffective ion replacement” phenomenon during the first discharge cycle at low voltage. Specifically, Zn 2+ ions engage in an ion exchange reaction with the surface of the Cu 31 S 16 cathode material, irreversibly replacing Cu 2+ ions. Furthermore, we found that the Cu 2+ ions displaced in this process react with H + at the high voltage discharge plateau to form zinc hydroxysulfate (Zn 4 (OH) 6 SO 4 ·XH 2 O), which subsequently transforms into ZnxCu 4-x (OH) 6 SO 4 ·XH 2 O. The microstructure transitions from the characteristic hexagonal plate-like morphology of Zn 4 (OH) 6 SO 4 ·XH 2 O to the hexagonal prismatic cluster structure of ZnxCu 4-x (OH) 6 SO 4 ·XH 2 O. To address this issue, we propose and implement an “Overvoltage Pre-cycle” method, where trace amounts of Zn 2+ are introduced to replace Cu 2+ at the Cu 31 S 16 cathode. This approach stabilizes the surface structure of the cathode, significantly extending its operational lifespan, providing a more stable discharge plateau, and increasing the discharge duration. Comparative analysis reveals that the effective discharge plateau of AHPBs activated through the first cycle “Overvoltage Precycle” reaches 85.5 %, a 14.1 % improvement over the 71.4 % observed for conventionally activated AHPBs. Additionally, the charge-discharge energy conversion efficiency improves from 82.46 % to 83.35 %. Theoretical calculations indicate that the first cycle “Overvoltage Precycle” enhances the surface structure of Cu 31 S 16 as the cathode, and the Zn 2+ doping improves its electrochemical performance by facilitating efficient H + transport. This further deepens our understanding of the H + /Zn 2+ co-intercalation electrochemical behavior, offering new insights for optimizing cathode surface engineering.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Linlin Liang,Meijiao Peng,Hui Xu,Zijun Wu,Baojie Liu,Chengrong Qin,Chen Liang,Caoxing Huang,Shuangquan Yao
Polyethersulfone (PES) membranes are widely utilized in oil-water separation applications owing to their exceptional chemical and thermal stability. However, their inherent hydrophobic nature renders them susceptible to fouling and blockage by oily substances in practical applications. In this study, aminated lignin (AML), containing hydrophilic amino groups and exhibiting good compatibility with PES, was incorporated into PES membranes to prepare AML/PES composite membranes. The physical and chemical properties, oil-water separation capacity, and anti-fouling performance of the composite membranes were systematically analyzed. Under optimal process conditions (AML concentration 2.0 wt%, PES concentration 16 wt%, temperature 40 °C), the AML/PES membrane exhibited markedly improved performance; the porosity reached 75.67 % and the hydrophilic contact angle decreased to 53.4°. Furthermore, pure water flux recovery rate FRR significantly increased from 65.51 % without AML to 79.22 %, while the resistance to irreversible contamination decreased to 26.47 %, and the resistance to reversible contamination increased to 29.75 %. After three testing cycles, the recovery rate of pure water flux declined by only 9.38 %, indicating that the composite membrane has excellent anti-pollution performance and good cycling stability. Our results highlight a promising strategy for the high-value utilization of lignin, providing a new type of high-performance membrane material solution for the field of oily wastewater treatment.
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FOOD RESEARCH INTERNATIONAL
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2025
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IF 8
Bowen Zou,Junwei Zhang,Xiaohan Zheng,Xiaokang Na,Ming Du,Chao Wu
High-protein (HP) foods are increasingly sought after for their nutritional benefits. However, the uncontrolled aggregation of soy protein (SP) during thermal processing limits its application both in high-viscosity and low-viscosity HP products. Here, we report a facile method for regulating SP aggregation and gel properties by a simple preheating process combined with the introduction of β-cyclodextrin (β-CD) and resistant dextrin (RD). Conformational changes and interaction analysis collectively revealed that β-CD inhibited SP aggregation by specifically binding with exposed hydrophobic regions via its hydrophobic cavity. The reduced hydrophobic interactions coupled with enhanced electrostatic repulsion endowed the high-concentration SP system with improved flowability, as evidenced by the 2.27-fold increase in the flow behavior index compared to native SP. In contrast, RD promoted SP aggregation by strengthening hydrophobic interactions and weakening electrostatic repulsion, accelerating gel formation and resulting in a more robust gel network characterized by a 138 % increase in storage modulus. These findings offer valuable strategies for precisely tailoring the rheological and nutritional properties of SP-based HP foods, meeting diverse functional and consumer demands.
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POLYMER
·
2025
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IF 4.5
Hongji Wang,Jian Wang,Hanyu Yao,Xiaoqing Hao,Yin Lv,Zhong Wei
The environmental pollution caused by traditional plastics and the shortage of petroleum resources have increasingly garnered attention. The non-renewable nature of traditional petroleum-based materials has prompted an increasing number of researchers to focus on developing biodegradable bio-based materials. Polybutylene succinate (PBS) has garnered significant attention due to its excellent properties and low price. However, the poor toughness of PBS limits its applications. In this paper, an environmentally friendly rigid cyclic structure, hydrogenated bisphenol A (HBPA), is introduced into the synthesis of poly(butylene succinate) (PBS), forming the PBHBPAS copolymer. The addition of HBPA reduces the crystallinity of PBS, thereby increasing the elongation at break and improving toughness. It also significantly enhances the glass transition temperature (T g ), mechanical properties, and optical transparency of the copolymer, greatly expanding the application fields of PBS. Due to HBPA's relatively regular and long-chain rigid structure, the synthesized copolymer can significantly increase its elongation at break without reducing tensile strength. Specifically, the synthesized PBHBPAS5 exhibits a tensile strength of 43 MPa and an elongation at break of 557 %. Its toughness and tensile strength are both improved compared to PBS, significantly enhancing its mechanical properties. In addition, the optical transparency test results indicate that the optical transparency of PBHBPAS20 is approximately 16 times that of PBS. The water degradation test reveals that copolyesters with varying proportions of HBPA exhibit polyesters with different degradation rates, which are slower than that of PBS, thereby broadening the application fields of PBS in transparent packaging and degradable mulching films.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Zhiqiang Zhao,Yiwen Huang,Minghao Chao,Silin Du,Junjie Li,Jin Wang,Guangyu Ma,Yufan Liu,Xin Kang,Mengying Fu,Dehong Yu,Shibao Li,Fenglei Gao
Oxygen defect engineering, which precisely modulates the coordination environments and dynamic equilibria of oxygen vacancies (O v ), lattice oxygen (O lat ), and adsorbed oxygen (O ads ), serves as a pivotal strategy for optimizing electronic structures and catalytic pathways in metal oxides and is expected to become a core means to enhance the activity of nanoenzymes. Leveraging optimized component ratios from oxygen defect engineering, we engineered hollow porous nanocages with a distinctive 3D open framework to maximize active site exposure. Controlled reduction reconstructed oxygen species distribution, endowing the material with exceptional peroxidase (POD), oxidase (OXD), and laccase (LAC) activities. Capitalizing on phenolic pollutants' structural features and reducibility, we developed a tri-channel nanozyme sensor array using CuO@Pd nanocages. This system enables efficient oxidative degradation and precise identification of six phenolic compounds through synergistic triple-enzyme catalysis. Transcending the pH limitations of conventional sensors, the array differentiates phenolic analogues across concentrations with broad linear ranges and high sensitivity. This work establishes a direct methodology for modulating nanozyme activity via oxygen defect engineering while elucidating the electron-transfer mechanism in Pd Cu redox cycling.
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Science China-Materials
·
2025
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IF 7.4
Shen Jiaxin,Feng Tao,Li Chen,Hou Shisheng,Yin Kuibo,Bi Hengchang,Sun Litao
Converting hydrogels into one-dimensional (1D) fiber structures and integrating them into textiles offers a promising approach for the development of smart wearable devices. However, under repeated deformations, the fracture of low-energy amorphous crosslinking structure in the hydrogel leads to fatigue and hysteresis. This severely impairs the mechanical properties of hydrogel fibers and limits their potential applications. In this study, a novel strategy for fabricating composite hydrogel smart fibers featuring exceptional mechanical robustness and multisensory capabilities is proposed. By integrating an Ecoflex elastomer backbone into the organic hydrogel, the fatigue resistance is enhanced and hysteresis is eliminated, and no significant degradation of mechanical properties is observed after 10,000 cycles of 200% strain loading and unloading. The strain sensor based on this fiber has high sensitivity (gauge factor ∼3.0), fast response (140 ms)/recovery time (130 ms), and excellent repeatability (10,000 cycles at 70% strain). Moreover, the organic hydrogel/Ecoflex fiber (OHEF) exhibits remarkable resistance to dehydration and freezing. Smart textiles based on OHEF can detect diverse external stimuli, including deformation, temperature, proximity, pressure, and can perform passive sensing. The successful development of this fiber represents significant progress in applying hydrogels to wearable devices. Its multisensory properties highlight the great potential of OHEF for wearable electronics applications.
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PROCESS BIOCHEMISTRY
·
2025
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IF 4
Yumei Feng,Yuanmin Zhu,Bohan Wang,Feifan Zhao,Yanxia Zhang,Xinqi Zhu,Huaixin Li,Longjiang Yu
Rapeseed meal hydrolysate (RSMH), is a low-cost, nitrogen-rich substrate with high potential for microbial fermentation. This study investigated the feasibility of using RSMH as an alternative nitrogen source to enhance docosahexaenoic acid (DHA) production in Schizochytrium sp. H016. Nutritional analysis revealed that RSMH contains abundant amino acids and phenolics, which are favorable for microbial growth and stress tolerance. Fermentation results showed that replacing yeast extract with RSMH significantly improved biomass accumulation, lipid production, and DHA yield. At 120 h, the maximum biomass, lipid, and DHA yields reached 45.80 g/L, 18.62 g/L, and 7.30 g/L, respectively, corresponding to increases of 23.96 %, 97.66 %, and 94.15 % compared to the control. RT-qPCR analysis revealed that RSMH upregulated key genes involved in glycolysis, fatty acid biosynthesis, triacylglycerol assembly, and antioxidant defense, which together promoted carbon flux toward lipid synthesis and improved oxidative stress resistance. Confocal microscopy further confirmed the increased accumulation of lipid droplets in RSMH medium. Fed-batch fermentation in a 5-L bioreactor yielded DHA and lipids of 15.51 and 33.81 g/L, respectively, with a final biomass of 63.80 g/L. These findings demonstrate that RSMH effectively substitutes yeast extract and upgrades rapeseed meal into a feedstock for DHA production.
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危险品化学品经营许可证（带存储）