Advanced Composites and Hybrid Materials
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2025
·Vol. 8
·期 4
·1-12
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IF 21.8
Wang Lijuan,Shi Yaqin,Wang Yuan,Jia Chunijang,Hou Jie,Su Yizhen,Xu Ben Bin,Liao Zhijian,Zhu Linhua
Synergistic effect between M-N X sites and M X O Y particles in hierarchical porous M–N-C catalysts holds great promises in boosting oxygen reduction reaction (ORR). In this work, 1,4-dicyanobenzene was utilized as a molecular template to prepare the hierarchical porous Fe–N-C catalysts with size-tunable Fe 3 O 4 particles for enhanced ORR in Zn-air battery. The as-prepared Fe 3 O 4 #Fe–N/C DB0.1 owned a half-potential of 0.90 V vs RHE, exceeding that of commercial 20%Pt/C (E 1/2 = 0.82 V vs RHE), showing a maximum power density of 321 mW cm −2 in a homemade Zn-air battery. Density functional theory (DFT) calculations indicate that the electronic interaction between Fe 3 O 4 and Fe-N 4 sites enhances the adsorption energy of *OOH, effectively optimizing the energy barrier for *O formation, significantly reducing the limiting energy barrier. Such superior ORR activity in Fe 3 O 4 #Fe–N/C originated from the optimized hierarchical pores and synergistic effect between Fe-N X sites and Fe 3 O 4 particles. This work provides a new and facile template strategy for engineering hierarchical porous carbon-based materials to achieve highly efficient catalytic reactions.
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CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Yan Yu,Yanqi Yin,Bingchen Zhou,Xinrui Jia,Boshi Tian,Ziyong Cheng,Shili Gai,He Ding,Kesong Liu,Piaoping Yang
Erythrocyte preservation requires maintaining cellular activity and functional integrity to ensure transfusion safety and efficacy. However, conventional cryopreservation methods suffer from operational complexity, while standard 4 °C refrigeration cannot prevent cellular damage caused by oxidative stress and metabolic dysregulation. Herein, we designed an intelligent control system based on a dual-network magnetic separation microgels, which can monitor changes to the microenvironment of erythrocyte preservation in real time during refrigerated storage at 4 °C. Red blood cells (RBCs) can be encapsulated in magnetic microgels self-assembled with reactive oxygen species (ROS)-sensitive phenylboronic acid ester bonds and pH-sensitive Schiff base bonds. Stored at 4 °C in a bacteriostatic environment, the microgels prevent the overproduction of ROS and mitigate pH decline caused by lactate accumulation. Its magnetic component enables efficient and convenient separation of RBCs. The intelligent control system enables real-time monitoring of ROS and pH variations within the preserved microenvironment, as indicated by the increase in resistance signal of the microgels. When the microgels' resistance exceeds the set threshold (ΔR/R 0 = 0.08), the computer then intelligently controls the addition of the antioxidant. Using Balb/c mice RBCs as a model, the microgel system extends the preservation of RBCs for up to 20 days, outperforming a commercial protectant in all preservation parameters. Thus, this work provides an innovative solution for long-term hypothermic preservation and real-time monitoring of RBCs, which will effectively alleviate the supply pressure of clinical blood banks by reducing the RBCs scrapping rate.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Yuyan Tang,Tingting Fan,Arslan Hameed,Yuanhang Ma,Wenxiang Sheng,Yawei Li,Ping Chen,Peng Li
To address the escalating global energy demand and advance sustainable hydrogen production, we report the rational design of a carbon-encapsulated La-doped Ni 2 P/NiSe heterojunction electrocatalyst on nickel foam (La-Ni 2 P/NiSe@C/NF) via synergistic La doping and interface engineering for enhanced urea oxidation reaction (UOR). La induces porous, wrinkled nanosheets, boosting surface area (11.89 m 2 g -1 ), enhancing active site exposure. The Ni 2 P/NiSe heterointerfaces generate built-in electric fields that accelerate interfacial charge transport. XPS, EXAFS, and in situ Raman confirm La doping modulates Ni 3+ electronic structure, thereby shifting the Ni²⁺/Ni³⁺ redox transition to lower potentials, thereby shifting the Ni 2+ /Ni 3+ redox transition to lower potentials. The La-Ni 2 P/NiSe@C/NF exhibits excellent UOR activity in an alkaline electrolyte, delivering a current density of 10 mA cm -2 at 1.296 V (vs. RHE). Remarkably, it achieves a low Tafel slope of 32.73 ± 0.73 mV dec -1 . These performance metrics surpass both control samples and state of the art benchmark materials. Moreover, a two-electrode electrolyzer assembled with La-Ni 2 P/NiSe@C/NF||Pt/C/NF exhibits exceptional 250 h stability at 50 mA cm -2 , underscoring the efficacy of rare-earth doping and heterointerface engineering for high-performance UOR.
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WASTE MANAGEMENT
·
2025
·
IF 7.1
Yuxin Chen,Xin Kong,Xumiao Mao,Xiaojun Fan,Jin Yuan
Anaerobic digestion (AD) operated at transitional temperature is a promising technology for treating de-oiled food waste (FW). However, under such conditions, the metabolic activity of methanogens will be significantly negatively affected compared to conventional mesophilic or thermophilic conditions, which limits its practical application. In this study, the AD of cellulose at 45 °C were investigated, and the synergistic effects of zero-valent iron (ZVI) and magnetite (Fe 3 O 4 ) on enhancing methanogenesis were explored. The results indicated that the combination of ZVI and Fe 3 O 4 played a crucial role in promoting cellulose methanogenesis during AD at 45 °C. Specifically, the methane yield reached 300.1 mL/g VS, representing a 58 % increase compared to the control group. Further analysis revealed that ZVI + Fe 3 O 4 enhanced the levels of coenzyme F420 and acetate kinase. Firmicutes and Methanosarcina were the dominant microbial groups involved in normal methanogenesis at 45 °C, and a positive correlation between these two groups was observed. Metagenomic sequencing further demonstrated that the combination of ZVI and Fe 3 O 4 synergistically increased the abundance of genes associated with both acetate cleavage and CO 2 reduction methanogenic pathways. The dominant pathways achieved a dynamic equilibrium, functioning according to the available substrates at different stages within the reactor. Life Cycle Assessment (LCA) results indicated that coupling ZVI and Fe 3 O 4 could effectively reduce carbon emissions and fossil resource depletion. The study provided theoretical evidence for the application of AD in treating cellulose-based substrates at transitional temperatures.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
·
IF 7.7
Xin Yu,Jingzhang Wang,Guanghao Huang,Lianqun Zhou,Zhenjie Zhang,Shuzhi Sam Ge,Qing Wang,Hui Kong
The demand for early detection of inflammation-related diseases has driven interest in non-invasive methods like sweat analysis for their simplicity and rapid response. This paper develops a non-invasive C-reactive protein (CRP) sensor based on a three-dimensional dendritic gold structure electrode, which features high sensitivity, broad detection range, and excellent specificity. By in-situ growing dendritic gold on the gold electrode surface, the specific surface area of the sensor is 2.41 times that of the gold electrode. This increases the binding sites for CRP-capturing antibody (cAb), enabling the sensor to achieve a sensitivity of 3.26 µA mL ng −1 , which is 3.33 times that of the gold electrode. A double-antibody sandwich assay is employed using thionine-labeled spherical gold nanoparticles-antibody (AuNPs-dAb) conjugates as detection probes, with bovine serum albumin (BSA) blocking to minimize interference. The approach enhances sensor specificity and accuracy while enabling low-concentration detection, achieving a linear detection range of 0.5–30 ng mL −1 . The sensor's detection results exhibited a correlation coefficient of 0.995 with hospital-standard instruments. Additionally, a sweat-processing device and a flexible printed circuit board (FPCB) are integrated. Data are transmitted to mobile terminals via low-power near field communication (NFC). This platform facilitates early inflammation detection in clinical and home settings.
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Journal of Energy Chemistry
·
2025
·
IF 14.9
Keke Chen,Yang Li,Yuhao Feng,Xuefeng Li,Zhiqiang Li,Shuming Liu,Chunhua Ge,Xiao Chen
Solar-thermoelectric generators (STEGs) capable of harnessing solar energy for conversion into clean electricity are pivotal for advancing towards carbon neutrality. The integration of phase change materials (PCMs) with STEGs facilitates power generation regardless of solar radiation flux due to their robust thermal management capacity. However, the inherent solar-thermal conversion efficiency limitation of PCMs hinders the production of high and sustained electrical output. Herein, a multidimensional engineering strategy is proposed to align two-dimensional (2D) molybdenum disulfide (MoS 2 ) nanosheets vertically in situ on a dodecahedron composed of zero-dimensional (0D) Co nanoparticles and three-dimensional (3D) high graphitized carbon derived from ZIF-67, thus significantly boosting the solar-thermoelectric energy generation of polyethylene glycol (PEG). The resultant PEG-Co/C@MoS 2 composite PCMs exhibit a high solar-thermal conversion efficiency of 92.89%, benefiting from the synergy of multiple components and unique structural arrangements. When coupled with thermoelectric devices, this powerful STEG yields a high and durable output voltage of 197.51 mV and a current of 52.47 mA under 100 mW cm −2 , outperforming the majority of previously reported literature. This PCM-integrated solar-thermoelectric generator overcomes limitations associated with temporal and meteorological variations, enabling simultaneous high-density heat and electricity generation for energy conservation and environmental sustainability.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Tingan Yao,Guohui Dong,Ying Gao,Dongfeng Sun,Hehua Zeng
This study successfully constructed a g-C₃N₄/FeOOH S-scheme heterojunction photocatalyst with lotus-leaf structural effects, addressing the challenges of insufficient oxygen and water adsorption sites and high photocurrent recombination rates in g-C₃N₄ photocatalysts. The optimized photocatalyst exhibits outstanding performance, generating hydroxyl radicals via dual pathways under visible light (generation rate: 2.8 μmol/(L·min)). The lotus-leaf effect in the composite was confirmed through morphology analysis, static water contact angle measurements, and oxygen adsorption/desorption experiments, demonstrating an 18.9-fold enhancement in oxygen capacity. In situ XPS, built-in electric field intensity measurements, and theoretical calculations confirm that the built-in electric field at the interface, directed from g-C₃N₄ toward FeOOH, drives an S-scheme charge transport pathway. This not only achieves efficient spatial separation of photogenerated carriers but also uniquely preserves the system's strongest redox capability, significantly enhancing photocatalytic efficiency. Furthermore, in situ infrared spectroscopy and electron paramagnetic resonance studies confirm the composite material's dual-channel mechanism for hydroxyl radical generation via oxygen reduction and water oxidation. This work provides robust experimental and theoretical foundations for understanding and designing S-scheme heterojunctions for dual-channel hydroxyl radical generation in photocatalysis.
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Carbohydrate Polymer Technologies and Applications
·
2025
·
IF 6.5
Liu Shi,Sihui Lin,Yixuan Gong,Xiangrong Wei,Jie Ruan,zhongxiao zhou
Flocculation is crucial for water purification, but conventional flocculants are hampered by inefficiency and environmental concerns. This study develops a novel chitosan-polyacrylamide (CS-PAM) flocculant innovatively synthesized using graphitic carbon nitride (g-C₃N₄) as a dual-function photoinitiator and cross-linker. This facile photocatalytic approach under ambient conditions yielded a composite flocculant (CNCSPAM) with a uniquely integrated network. The optimized CNCSPAM exhibited exceptional performance in treating highly turbid wastewater, achieving over 97% turbidity removal at an ultralow dosage of 0.25 mg L⁻¹, rapid sedimentation kinetics (<2 min), vastly outperforming its individual components. It also demonstrated wide pH applicability and strong tolerance to environmental interferents. Flocculation kinetics and mechanism studies revealed that the high efficiency stems from a synergistic effect: charge neutralization by chitosan enhanced by the bridging effect of the cross-linked PAM network. This work provides a sustainable and cost-effective flocculation strategy, notable for its green synthesis, minimal dosage, and high efficacy, representing a significant advance for water treatment technologies.
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Materials Today Communications
·
2025
·
IF 4.5
Chengzhen Fu,Hailu Wang,Hongxing Zhan,Yuanbing Li,Shujing Li,Bo Yin
Reducing the Ca/Si molar ratio is critical for optimizing calcium silicate hydrate (C–S–H) materials and enabling the recycling of silicon-rich waste. However, achieving high-performance crystalline C–S–H at Ca/Si < 0.83 remains challenging. This study proposes and systematically investigates a dual-silicon-source strategy, employing both active and inert silicon sources to regulate hydrothermal synthesis. At Ca/Si = 0.6, experimental results demonstrate that increasing the active silicon source content from 0 % to 60 % enhances tobermorite crystallinity by 275 %, decreases thermal conductivity by 26 %, and improves compressive strength by 7.30 MPa. The optimal performance was obtained at a reactive silicon-to-calcium molar ratio of 1.0. These findings confirm that this strategy significantly enhances C–S–H crystallinity and material performance. Mechanistically, the higher reactivity of the active silicon source drives competitive calcium consumption, facilitating the formation of long-chain crystalline C–S–H. This approach demonstrates a scalable pathway for synthesizing high-performance C–S–H under low Ca/Si conditions, offering promising applications in optimizing C–S–H-based materials and the recycling of silicon-rich waste.
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yaqian Dong,Zhi Fang,Deliu Ou,Qing Shi,Yu Ma,Weiyou Yang,Bin Tang,Qiao Liu
Constructing inexpensive, efficient, and stable pH-universal oxygen reduction electrocatalysts with controlled distribution of active species is of great importance for the exploration of green energy conversion devices. Herein, we demonstrated the rational preparation of S-modified Fe–N–C nanosheet catalysts with hierarchical porous architecture, large specific surface area (up to 1471 m 2 g −1 ) and controlled S doping (up to 12.3 at.%) by the co-pyrolysis of cysteine, FeCl 3 with Zn-mediated MgO template. Merited from rich and accessible active sites, the catalysts display outstanding oxygen reduction reaction (ORR) activity in terms of very small E j3 (potential@3 mA cm −2 , 0.87 V in 0.1 M KOH, 0.66 V in 0.1 M PBS (pH7.4) and 0.64 V in 0.5 M H 2 SO 4 ) and overwhelming diffusion-limited current density (9.8, 6.1, 10.3 mA cm −2 in alkaline, neutral, acidic media, respectively), along with extremely respectable stability (∼90% activity retention for 53200, 26728, 43200 s in alkaline, neutral, acidic media, respectively), which underscore comparable or even better overall performance than commercial Pt/C and advanced pH-universal ORR catalysts ever reported. The as-assembled primary alkaline zinc–air battery delivers considerately large peak power density of 205 mW cm −2 and energy density up to 990.6 Wh kg Zn −1 at 10 mA cm −2 (115 mW cm −2 and 676.7 Wh kg Zn −1 for Pt/C-based battery), implying its highly promising application in practical energy conversion devices.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Haining Hou,Zehao Zhang,Haibo Li
Capacitive deionization (CDI) is a highly efficient desalination technique to obtain the portable water with low energy cost and environmental-friendly. However, the desalination capacity is still challenging. In this work, a Cu@C anode presenting the spherical structure with plenty of 3D diffusion tunnels has been proposed for CDI anode towards the enhanced Cl - removal. Such structure not only provide abundant electroactive sites for adopting salty ions, but also promote the electrosorption kinetics. Aiming to extract Cl - from the stream, the optimized Cu@C // activated carbon CDI device demonstrates the exceptional desalination capacity of 149.14 mg/g at 1.4 V in 529 ppm NaCl solutions as well as the fast desalination rate of 8.32 mg/g/min, which are relatively high as compared to many reported data. Moreover, the mechanism analysis points out that the desalination behavior of Cu@C electrode is dominantly governed by the conversion of Cu 0 and Cu + . Beyond that, the desalination capacity decay upon the long cycles is attributed to the irreversible Cu-Cl bonds.
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WATER RESEARCH
·
2025
·
IF 12.4
Bobo Xing,Ji Li,Linlin Li,Nigel J.D. Graham,Xian Li,Wenzheng Yu
Excessive accumulation of nitrate in natural ecosystems can lead to eutrophication of water bodies, resulting in environmental impacts such as algal blooms and red tides that pose serious threats to environmental and human health. Autotrophic denitrification is a resource-efficient biological nitrogen removal technology, but the slow growth and low electron transfer efficiency of autotrophic denitrifiers limit their practical application. In this study, the heterotrophic denitrifying bacterium Pseudomonas sp. JM-7 ( P. JM-7) was used in mixed culture with the autotrophic denitrifying Thiobacillus denitrificans ATCC 25259 to form a heterotrophic-autotrophic synergistic denitrification process (mixPT) to enhance electron transfer and improve the denitrification efficiency. Our results for an initial nitrate concentration of 430 mg/L showed that P. JM-7 reduced approximately 210 mg/L nitrate (48.8 %) in 90 h, with 1 g/L yeast extract powder (YEP) as the electron donor, while Thiobacillus denitrificans barely removed nitrate. In contrast, the mixPT system reduced approximately 360 mg/L nitrate (83.3 %), nearly 1.7 times greater than P. JM-7 alone. The mixPT culture also exhibited excellent denitrification in low carbon waters (10 mg/L), and removed 40 mg/L nitrate completely within 120 h. Cytochrome c produced by Pseudomonas sp. JM-7, which is an excellent electron transfer mediator for denitrification by Thiobacillus denitrificans , played a crucial role in the heterotrophic-autotrophic syntrophic denitrification. The adsorption effect of Pseudomonas sp. JM-7 shortened the contact distance between the autotrophic denitrifying bacteria and cytochrome c, which made it easy for cytochrome c to transfer the electrons to the autotrophic bacteria directly, thereby reducing the loss of electrons in the process of transfer, and improved the electron utilization efficiency. These findings have demonstrated the potential applications of mixPT system in controlling eutrophic waters and propose cytochrome c of Pseudomonas sp. JM-7 could serve as a novel and high-quality electron transfer mediator. Furthermore, this study have overcome the restriction of low denitrification efficiency exhibited by heterotrophic denitrifying bacteria Pseudomonas sp. JM-7 in low-carbon environments and expanded the utilisation of Pseudomonas sp. JM-7 in low carbon environments.
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