CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Chen Shu,Bin Chen,Weihu Zhang,Lele Cui,Wenheng Jing
Renewable electricity-driven hydrogen peroxide (H 2 O 2 ) electrosynthesis technology has recently emerged as a multidisciplinary research frontier as its distributed deployment capability can provide enhanced versatility for various potential niche applications. Despite significant progress in screening advanced electrocatalysts and fundamental understanding of microscopic reaction mechanisms, industrially viable electrolysis devices suitable for this technology are still lacking due to technical challenges such as low space/electrode utilisation and single-pass yield as well as poor operability. Here, we demonstrate a membrane-free dual-cathode stack reactor featuring compactness (inter-electrode distance configured to flow field plate thickness) and ideal electrode utilisation (two cathodes paired with one anode). Structurally discontinuous carbon films with self-sustained aeration are assembled as cathodes, which enables open air-fed O 2 -to-H 2 O 2 conversion and thus effectively simplifies operation. Even with low electrolyte concentrations (0.05 M Na 2 SO 4 ), this design demonstrates efficient H 2 O 2 production from bench- to industrial-scale operating current densities (75–200 mA cm −2 ) at relatively low cell voltages (5.9–11.0 V). Impressive single-pass H 2 O 2 accumulations of 959.6–2332.1 mg L −1 with current efficiencies of 55.1 %–90.7 % can be achieved at low hydraulic retention times of 15–60 s. The practicality and reliability of the device can be further elucidated by its robustness in decentralized wastewater remediation scenarios. This all-material/components-commercial design paves the way for advancing the technology readiness level of H 2 O 2 electrosynthesis processes.
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Journal of Materials Chemistry A
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2025
·Vol. 13
·期 21
·15951-15960
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IF 9.5
Weihua Zhou,Junrun Feng,Zhuo Chen,Ziming Wan,Haoyu Feng,Lin Sheng,Zhuo Peng,Wenyuan Zhang,Zhangxiang Hao
Aqueous zinc ion batteries are a promising technology for rechargeable batteries due to their low cost and high safety. However, the interfacial behavior between the zinc anode and the electrolyte often leads to critical issues such as the hydrogen evolution reaction, corrosion, and the formation of zinc dendrites. While protective layers on the zinc anode can improve performance, they may also increase impedance, reduce conductivity, and compromise electric field uniformity. To address these challenges, we developed a novel approach by applying an ultrathin copper (Cu) coating on a zinc anode (Cu@Zn) via a vacuum vapor deposition technique. This method achieves precise nanoscale control over the coating thickness, resulting in a uniform and defect-free protective layer that significantly enhances zinc ion nucleation and effectively suppresses dendrite formation. The symmetric Cu@Zn//Cu@Zn cells cycled over 1200 hours at 5 mA cm−2 and 1 mA h cm−2, surpassing 1000 hours at a high current density of 10 mA cm−2. The full-cell testing conducted at a current density of 1 A g−1 showed a significantly improved cycling stability, with the capacity decay rate reduced from 0.085% to 0.056% per cycle over 1000 charge–discharge cycles. This study presents a viable approach that offers significant potential for advancing battery technology.
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Small
·
2025
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IF 12.1
Ya He,Zhuo Chen,Junrun Feng,Jian Wang,Lun Zhang,Hao Gu,Lin Sheng,Pengfei Yao,Feng Ryan Wang,Zhangxiang Hao
Aqueous zinc-ion batteries (AZIBs) are considered one of the most promising next-generation energy storage devices due to cost-effectiveness and high safety. However, the uncontrolled dendrite growth and the intolerance against low temperatures hinder the application of AZIBs. Herein, hydrogen-bonding-rich dulcitol (DOL) is introduced into the ZnSO 4 , which reshaped the hydrogen-bond network in the electrolyte and optimized the solvation sheath structure, effectively reducing the amount of active water molecules and inhibiting hydrogen evolution and the parasitic reaction at the zinc anode. In addition, higher adsorption energy DOL preferentially adsorbs on the surface of the zinc anode, guiding the uniform deposition of Zn 2+ and inhibiting the formation of dendrites. DOL also enhances the interaction between free and free water and improves the resistance to freeze of the electrolyte. Consequently, the Zn//Zn symmetric cells assembled with DOL are extremely stable cycled for 2000 h at 2 mA cm −2 . The NH 4 V 4 O 10 (NVO)//Zn full cell showed more excellent specific capacity of 183.07 mAh g −1 after 800 cycles. Even at the low temperature of −10 °C, the cell still maintains 155.95 mAh g −1 capacity after 600 cycles. This work provides a new strategy for the subsequent study of AZIBs with high stability at low temperatures.
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PubMed
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Frontiers in Microbiology
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2025
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IF 4.5
Junnan Wu,Qilei Xin,Shuo Wang,Xu Zhang,Chunping Jiang
Objective: The aims of the present study were to determine the efficacy of edible traditional Chinese medicines (ETCMs) in treating constipation, verify their laxative effects, and conduct preliminary investigations into their mechanisms of action.Methods: ICR mice were treated with loperamide to induce constipation, and various fecal parameters, including fecal volume, water content, and intestinal transport function, were measured in these constipation model mice to screen for ETCMs with laxative properties. The mechanism of action was preliminarily explored by examining changes in the intestinal mucosal structure, protein expression levels, and alterations in intestinal flora composition.Results: In ICR mice with loperamide-induced constipation, Elsholtzia ciliata aqueous extract (ECAE) and Hovenia dulcis aqueous extract (HDAE) significantly ameliorated constipation symptoms, mitigated colonic pathological tissue damage, significantly increased the expression levels of proteins associated with the promotion of intestinal peristalsis [Stem Cell Factor Receptor (c-Kit) and Stem Cell Factor (SCF)] and the maintenance of the intestinal barrier [Zonula Occludens-1 (ZO-l), Occludin and Claudin-l], and promoted beneficial intestinal bacterial colonization.Conclusion: ECAE and HDAE ameliorated constipation in mice, and their mechanism of action may be related to the increased abundance of intestinal bacteria such as Turicibacter, Olsenella, and Odoribacter, which contribute to higher butyrate production. This increase in butyric acid reduces inflammation, improves intestinal barrier function, and increases the abundance of beneficial intestinal bacteria.
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COMPOSITES PART B-ENGINEERING
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2025
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IF 14.2
Yang Hu,Dewei Ni,Bowen Chen,Feiyan Cai,Xiaoyu Wang,Yanmei Kan,Yusheng Ding,Shaoming Dong
Structure and stealth integrated materials that simultaneously deliver mechanical loading and broadband electromagnetic wave (EMW) absorption performance are critical for next generation stealth aircraft. Although conventional carbon fiber reinforced ceramic matrix composites (C f /CMCs) exhibit outstanding load-bearing capacity, their inherent EMW reflection characteristics often fail to meet stealth requirements. This work proposes a multiscale design strategy synergizing microscopic defect engineering with macroscopic gradient permittivity modulation. Accordingly, (SiO 2 –C) f /(CrZrHfNbTa)C–Si 3 N 4 –SiBCN composite featuring self-adaptive impedance matching and multi-mechanism EMW absorption were successfully constructed. The material demonstrates acceptable load-bearing capacity (101 ± 5 MPa) while achieving a remarkably high effective absorption bandwidth (EAB) per unit thickness (2.68 GHz mm −1 ). More importantly, radar cross section (RCS) simulations reveal that the sample achieves a remarkable RCS reduction of 35.52 dB m 2 . This surpasses most reported materials system, demonstrating high practical application potential. Density functional theory calculations reveals that defect engineering (lattice distortion and point defects) in the sample constructs new polarization centers at the microscopic level, which significantly enhances polarization relaxation loss for improved EMW absorption. On the other hand, macroscopic structural design (SiO 2f -C f -SiO 2f ) significantly optimizes the impedance matching, which effectively broadens EAB. The multiscale design strategy overcomes the inherent conflict between strong EMW reflection and attenuation in carbon fibers, which provides a novel material solution for stealth aircraft.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Qidong Zha,Zuozhu Yin,Guoyan Yang,Rirong Wang,Yu Xie,Yuhua Chen,Zhen Hong,Yidan Luo,Mingshan Xue
Solar-driven interfacial steam generation (SISG) has emerged as a promising candidate for addressing water scarcity issues, functioning as a clean water production process with zero carbon emissions. However, there is a lack of an ‘integrated system’ that simultaneously meets requirements for self-floating, salt resistance, and anti-biofouling during evaporation, while also removing pollutants (such as waste oil and heavy metal ions) from the water source environment. This research describes the sequential polymerization of aniline and dopamine-carbon black on the surface of polyurethane sponge, ensuring rapid water supply and strong photothermal conversion capability. The rich functional groups on its surface provide strong adsorption capacity for heavy metal ions. By further micro-modifying its surface with polydimethylsiloxane and carbon black, a unique 3D Janus structure was designed for the SISG, ensuring effective thermal insulation, salt resistance, and high buoyancy. Consequently, this evaporator achieves a maximum evaporation rate of 2.32 kg·m −2 ·h −1 , and its excellent hydrophobic properties confer high efficiency for oil–water separation (>95.5 %) and anti-biofouling (chlorella) capability. This ‘integrated system’ offers a unique strategy for addressing the accumulation of pollutants in solar evaporation processes.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Zhenyi Zhao,Lili Yan,Guanghui Li,Pinhua Rao,Benjiao Huo,Tiantian Li,Yuliang Li,Zhaoziyue Zhang,Yiran Sun,Jiao Xue
Capacitor deionization (CDI) technology has potential applications in heavy metal removal with low operating cost, environmental friendliness, and comprehensive benefits for water remediation. In this work, using food waste biogas residue as the carbon source, food waste biogas residue composite biochar with rich pore structure was prepared by adding tobacco stalk and KOH activation as the CDI electrode material, and Cu 2+ was taken as target pollutant for heavy metal removal studies. The pore volume of food waste biogas residue composite biochar with activation temperature at 600 ℃ was 2 times larger than that of food waste biogas residue and tobacco stalk biochar. The influence of temperature on structure, composition, electrochemical performance of biochar was further systematically investigated. Food waste biogas residue composite biochar with activation temperature at 800 ℃ (ABTC800) exhibited much larger specific surface area (2044.58 m 2 /g), abundant porous structure (1.29 cm 3 /g), and higher specific capacitance. The removal capacity of ABTC800 electrode can be up to 171.26 mg/g at 3 h in 50 mg/L Cu 2+ solution at a voltage of 0.8 V. Weak acidity is more favorable for Cu 2+ adsorption. ABTC800 had an excellent adsorption capacity towards Cu 2+ . In addition, characterizations revealed that Cu 2+ removal mainly relied on electrostatic adsorption, surface complexation, precipitation, and reduction during the whole process. This study proposed a promising strategy of biogas residue reuse for heavy metal removal.
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Journal of Water Process Engineering
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2025
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IF 6.7
Yuxiao Ran,Lang Liu,Yanqiong Bao
To address the challenges of salt interference and resource utilization difficulties in seawater desalination processes, there is an increasing demand for efficient separation of NaCl and Na₂SO₄. Inspired by the salt secretion mechanisms of mangrove ecosystems, we developed a cost-effective biomimetic system for salt separation and collection that synergistically integrates photothermal evaporation with ion-sieving processes and crystallization control mechanisms. This novel design achieves simultaneous separation and collection of NaCl at a single interface. The system demonstrates superior separation performance under high-salinity conditions, achieving a remarkable salt crystallization rate of 72 g m −2 h −1 in 20 wt% saline solution with a separation factor of 2.72 at a NaCl/Na₂SO₄ ratio of 3. The system maintained high-efficiency and stable operation during prolonged cycling experiments. By synergistically combining salt separation/collection with interfacial evaporation on a unified platform, this study presents an efficient and sustainable approach for salt fractionation that significantly advances the field of brine resource recovery.
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Food Bioscience
·
2025
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IF 5.9
Mingwei Sun,Meng Zhao,Linlin Du,Jieying Hou,Juane Dong,Bin Zhang
Constipation is a prevalent intestinal disorder that significantly diminishes patients' quality of life and predisposes them to various serious health conditions. Current therapeutic approaches for constipation frequently result in drug dependence and adverse effects. In this study, we present evidence that licorice water extract (LWE), a naturally derived compound from Glycyrrhiza uralensis Fisch, effectively ameliorates constipation in mice induced by diphenoxylate (DIP). Our findings indicate that oral administration of LWE (82 mg/kg/d) substantially reduces defecation time, enhances intestinal motility, and increases fecal water content in constipated mice. Furthermore, LWE elevates the levels of excitatory neurotransmitters such as serotonin (5-HT) and motilin (MTL), while concurrently decreasing the levels of inhibitory neurotransmitters including vasoactive intestinal peptide (VIP), nitric oxide (NO) as well as Lipopolysaccharide (LPS). Mechanistically, compared to the model control group, the LWE treatment upregulates the expression of ZO-1, Occludin , and MUC2 genes; repairs DIP-induced damage to the intestinal barrier; increases aquaporin 3 ( AQP3 ) protein expression; downregulates Toll-like receptor 4 ( TLR4 ); mitigates low-grade intestinal inflammation; and restores colonic goblet cell populations. Additionally, LWE is metabolized by gut microbiota, thereby restoring dysbiosis associated with DIP-induced constipation. In conclusion, our results suggest that LWE alleviates constipation through mechanisms involving intestinal barrier repair and gut microbiota modulation, highlighting its potential as an alternative therapeutic option for this condition. In response to this, we have developed a convenient gel-type candy (LWEI) with licorice extract and inulin as the main ingredients, which has shown good efficacy in relieving constipation.
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Energetic Materials Frontiers
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2025
·
IF 3.9
Chao Zhang,Xue-Xue Zhang,Ha Xiang,Xiao-hong Zhang,Qi-Long Yan
Low temperature sensitivity coefficients are of great significance for improving the combustion stability of modified double-base propellants (MDBPs) under sensitive environmental conditions. In this work, different combined catalyst systems containing Pb-complex, magnesium oxide (MgO), carbon black (CB) and Cu-complex have been employed to tune the combustion behavior of MDBPs. The effects of these catalysts on the combustion properties of MDBP have been comprehensively investigated at the pressure range of 4-15 MPa and different initial temperatures (-40, 20 and 50°C). The MDBPs with composite catalysts of Pb-complex, MgO, CB and Cu-complex (NR PbMgCBCu ) has almost zero temperature sensitivity coefficient. The combined catalyst systems have catalytic effect on thermal decomposition and combustion of MDBPs, which is more likely to cause an intensive combustion especially at lower pressures. The burning rate temperature sensitivity and pressure exponent of NR PbMgCBCu have been largely reduced by adding this combined catalyst systems. The results show that the exothermic peak temperature of NR PbMgCBCu was decreased by 8.2 °C, and its heat release has been increased by 26.4%, whereas the heat of combustion is 4.1 % higher than that of the blank MDBP. More importantly, the burning rates of MDB propellants with catalysts are notably increased by 86.9% to 169.8% at 4 MPa. The combination of Pb-complex, MgO, CB and Cu-complex may have the best stabilization effect on the burn rate sensitivity to the initial temperature for MDBPs. The calculated pressure exponent of NR PbMgCBCu at 6-12 MPa was largely reduced to 0.03, whereas the corresponding temperature sensitivity coefficient was only 5.4E-4 %·°C -1 .
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Zhu Zijie,Liu Yiwen,Qin Yuanbin,Gu Fangchao,Zhuang Lei,Yu Hulei,Chu Yanhui
Developing bioinspired all-ceramics with plastic phases is considered one of the most effective ways to simultaneously achieve enhanced strength and toughness in ceramic materials for high-temperature applications. Here we explore tough and strong bioinspired high-entropy all-ceramics with a contiguous network structure that are able to serve up to 1300 °C. Specifically, we develop the high-entropy all-ceramics, featuring a unique contiguous network distribution of the Cr 7 C 3 plastic phase within the predominant high-entropy carbide (HEC) hard phase, through a high-entropy composition-engineering strategy. The resulting materials exhibit impressive fracture initiation toughness of 12.5 ± 1.5 MPa·m 1/2 and flexural strength of 613 ± 52 MPa at room temperature, as well as ~97% strength retention up to 1300 °C due to their good high-temperature stability, surpassing the performance of most other reported bioinspired ceramics. Further experimental and theoretical investigations demonstrate that the Cr 7 C 3 phase can undergo plastic deformation by forming nanoscale shear bands with significant crystal defects, resulting in multiple toughening mechanisms involving crack-bridging of unfractured Cr 7 C 3 ligaments and crack deflection in the HEC/Cr 7 C 3 all-ceramics. This work successfully develops tough and strong bioinspired high-entropy all-ceramics capable of serving up to 1300 °C, offering an innovative strategy that facilitates further design of bioinspired ceramics applicable at higher temperatures.
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PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Pengyan Dai,Yuanshu Xiao,Jiexiao Wei,Haonan Li,Shuai Li,Lixia Jia
Structural color fabrics, which derive their color from the periodic microstructure of photonic crystals (PCs), face a significant challenge in practical applications due to their poor color fastness. The colloidal arrays are prone to collapse under external mechanical forces such as washing and rubbing. Surface encapsulation with polymer presents a promising solution. However, the prevalent use of commercial adhesives with ill-defined compositions hinders the precise understanding and control over the relationship between material properties and color stability. To address this limitation, this study designed and synthesized the UV-curable waterborne polyurethane (UVWPU) with tailored microphase-separated structures by regulating the NCO/OH molar ratio (R value). The synthesized UVWPU emulsions exhibited a translucent light blue appearance, nanoscale particle size, and excellent stability. The cured films demonstrated high transparency (>98 %), tunable mechanical strength, and good water resistance. These UVWPUs were then applied to encapsulate structural color fabrics fabricated by shear-induced assembly of polymethyl methacrylate (PMMA) microspheres of various sizes. The resulting structural color fabrics maintained vivid, angle-dependent structural colors. More importantly, they exhibited dramatically enhanced color fastness, successfully withstanding 45 min of washing, 100 rubbing cycles, 20 bending cycles, extended storage, and exposure to acidic, alkaline, and saline environments without significant color degradation. This work provides a fundamental and practical approach for developing high-durability structural color textiles.
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