Journal of Building Engineering
·
2025
·
IF 7.4
Hao Pan,Zhangyu Wu,Xitong Wang,Wei She
Biomimetic cement-based materials inspired by natural nacre have been developed via the bionic structure design and polymer toughening. Previous studies indicate that the mechanical property of this material is dominated by the quality of brick-and-mortar structure and the internal and external polymer. Herein, the flexural property and microstructure of biomimetic cement-based materials containing different polymers are comprehensively investigated, in order to clarify the influence of polymer variation on the strength and toughness evolution. Compared with the control group, changes of internal polymers slightly affect the flexural properties of materials, while changes of external polymers demonstrate significant impacts. The internal polymers exhibit differences in the intrinsic toughening mechanisms, which affect the ductile fracture of materials. And the fracture behaviors are largely altered by external polymers, which can be attributed to the film formation characteristics of polymer emulsions and the tensile properties of polymer films. Moreover, the differences in chemical interactions between polymers and cement matrix can strongly affect the flexural strength and toughness of materials. This work can provide theoretical bases for the polymer selection and performance enhancement of biomimetic cement-based materials.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Mengxin Liu,Haoran Zhang,Xinmeng Huang,Ziyi Zhang,Shulin Huang,Qihui Wen,Jintang Zhou,Lei Pan
With the rapid advancement of high-power electronics, developing advanced multifunctional electromagnetic interference (EMI) shielding materials that simultaneously realize high shielding effectiveness (SE), low reflection, and mechanical adaptability remains a critical challenge. This work presents a gravity-driven assembly strategy to construct asymmetric gradient structures by spatially distributing low-density MXene nanosheets@hollow Fe 3 O 4 nanospheres (MXene@HFO) and high-density silver-coated tetraneedle ZnO whiskers (T-ZnO@Ag) within a waterborne polyurethane (WPU) matrix. The self-organized Janus architecture optimizes impedance matching and enables a multiple “absorption-reflection-reabsorption” loss mechanism. The resulting composite film achieves absorption-dominated EMI shielding with an SE of 72.4 dB and an absorption coefficient ( A ) of 0.54. Notably, it also exhibits exceptional mechanical properties, including over 400% reversible stretchability, robust durability for 1000 cycles, and strain-responsive shielding tunability, addressing key limitations in practical applications. Moreover, the interconnected conductive network delivers rapid Joule heating (174°C in 30 s at 2.5 V) and high thermal conductivity (9.53 W m −1 K −1 ), enabling efficient thermal management. The proposed multifunctional film holds great promise for next-generation electronics requiring simultaneous EMI protection and thermal management, while the one-step fabrication methodology offers scalability advantages suitable for industrial production.
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BIOSENSORS & BIOELECTRONICS
·
2025
·
IF 10.5
Kangdi Guan,Hongshi Ren,Shiyao Deng,Ying Li,Jinpeng Du,Zhao Li,Muchun He,Xiaobing Fu,Sha Huang,Yuxiang Shi,Zhirong Liu,Di Chen,Guozhen Shen
Monitoring wound physiological conditions and implementing timely intervention are crucial for preventing chronic transformation. While flexible bioelectronics offer the potential for real-time wound assessment, existing technologies predominantly rely on wound-contact measurements, which may disrupt the fragile wound microenvironment and even pose infection risks. Here we present a peri-wound wearable system combined impedance and oxygen saturation (SpO 2 ) monitoring, enabling a non-contact, dual-modal evaluation of the healing process through tissue regeneration status and microcirculatory dynamics. The system incorporates a bio-adhesive hydrogel with hydration-maintaining design for long-term impedance sensing and a perovskite-based photodetector for localized SpO 2 quantification, both with distinct relevance to wound structural remodeling and functional recovery. In mouse models of excisional, burn and diabetic wounds, experimental results confirmed that the integrated system accurately tracks the healing trajectory, and significantly accelerates wound closure when coupled with tailored electrical stimulation. This peri-wound wearable system achieves concurrent structural-functional evaluation and treatment while avoiding potential disturbance to fragile tissue, offering an innovative paradigm for comprehensive wound management.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
LiJun Tang,Xue Liang,Xiaodong Zhu,Jian Gao
The rise of Na-storage devices has imposed more stringent demands on storage electrode materials with large capacity, long service life, and fast rate capability. However, the application of electrode material is still hampered by its poor electrical conductivity and severe volume expansion. Herein, the reduced graphene oxide-based composite aerogel (rGO gel) is fabricated by implementing a self-shrinking strategy and leveraging the columnar support effect of one-dimensional nano-gaskets (T-Nb 2 O 5 and CNT). Benefiting from the synergistic effect of nano-gaskets and pore structure design, the composite electrode enhances the mechanical strength while buffering the volume change of the active materials. The well-connected conductive network not only promotes the diffusion of Na + but also provides abundant accessible active sites. Therefore, a half-cell assembled using rGO/T-Nb 2 O 5 as working electrode achieves maximum specific capacity of 546.5 mAh g −1 at 0.1 A g −1 . Moreover, the constructed 3D rGO/T-Nb 2 O 5 //rGO/CNT sodium-ion hybrid supercapacitor delivers a mass specific capacitance of 96.5F g −1 at the current density of 2.0 A g −1 . In addition, the high mass energy density of 66.2 Wh kg −1 and power density of 2225 W kg −1 are demonstrated. This work provides a novel structural design strategy for advancing high-performance Na-storage devices.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Tingting Xu,Ruixiang Xie,Yiyu Long,Jianrong Da,Yao Xu,Guanghui Lu,Huiyang Bian,Shumei Wang,Hongqi Dai
The development of multifunctional papermaking additives has long been a research focus. Attapulgite, a naturally abundant chain-layered magnesium-aluminosilicate clay mineral, is a promising non-metallic resource. When incorporated into pulp, its notable adsorption capacity, colloidal properties, and hydroxyl-rich structure may promote compatibility with plant fibers, thereby improving paper uniformity, smoothness, and flexibility. Furthermore, owing to its high specific surface area and strong surface adsorption effects, attapulgite can be easily surface-modified through simple treatments to enhance bonding between paper fibers and fillers, reduce retention aid usage, and even serve as a functional filler. However, current challenges include irregular mining practices for raw attapulgite ores, compositional complexity, insufficient analysis of its structural and physicochemical properties, and limited research on post-modification strategies, all of which hinder its high-value applications. To address these limitations, this study utilized raw attapulgite ore as a base material. After purification via a straightforward washing method, its surface was modified with polydopamine to serve as a carrier for silver nanoparticles, yielding a highly dispersed functional attapulgite-based filler for papermaking. The modified attapulgite filler demonstrated significant performance enhancements: after paper formation, the white water turbidity decreased from 81.8 NTU to 40.3 NTU. The paper tensile index was maintained with a slight improvement, increasing from 23.97 N·m·g⁻¹ to 24.81 N·m·g⁻¹ . No significant adverse effects were observed on the bulk, opacity, or whiteness. Moreover, it exhibited favorable antibacterial activity, with inhibition zone diameters of 11.80 mm and 12.14 mm against E. coli and S. aureus , respectively. These results confirm that simple purification and modification strategies can endow attapulgite fillers with multifunctionality, providing a practical reference for future applications of attapulgite-based functional materials in the paper industry.
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Catalysts
·
2026
·Vol. 16
·期 1
·103
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IF 4
Hui Tang,Jiateng Hu,Qianqian Yang,Gang Yu
In the present study, glass/ceramic hybrid fibers were chosen as a paper matrix, which effectively balance toughness and high-temperature resistance for soot combustion applications. In order to address the issue of unevenness in the performance of paper-type catalysts caused by the differences in the dispersion behavior of glass fibers and ceramic fibers in water, a facile foam-forming technology was proposed. The obtained glass fiber/mullite composite paper with various mass ratios (1:1, 2:1, 3:1, 4:1, and 5:1) exhibit high evenness, and better high-temperature resistance than the pure glass fibers. After impregnating K-Mn active ingredients, 15K5Mn-GFF-3G1C (GF/CF = 3:1) demonstrates high tensile strength, excellent catalytic activity (T50 = 388 °C), reusability (five cycles), and high-temperature stability (800 °C, 12 h).
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Runhai Wu,Ran Wang,Shaopei Yang,Baiting Li,Shimeng Guo,Hongxiao Wang,Ting Wan,Baoyan Wang,Kefeng Xie,Pengcheng Du
Zinc-ion batteries (ZIBs) have attracted widespread attention and experienced rapid development due to their high theoretical capacity, suitable voltage, and abundant zinc resources. However, their widespread deployment faces challenges like zinc dendrite growth and harmful side reactions. Hydrogel electrolytes offer a potential solution, effectively suppressing these issues and enabling flexible, wearable ZIBs for next-generation electronics. Herein, we present a dual-crosslinked hydrogel electrolyte (HPM) fabricated by free-radical polymerization that integrates a physically crosslinked network of the natural biopolymer hyaluronic acid (HA) with a chemically crosslinked polyacrylamide (PAM) framework. HA enhances mechanical robustness and interfacial adhesion via its abundant carboxylate and hydroxyl groups, coordinates Zn 2+ to modulate the solvation sheath and direct uniform Zn deposition, thereby effectively suppressing dendrite growth. As a result, Zn//Zn symmetric cells employing HPM demonstrated exceptional long-term cycling stability (1700 h at 1 mA cm −2 /0.5 mAh cm −2 ). Furthermore, Zn//HPM//PANI@CC full cells exhibited outstanding specific capacity (132.3 mAh g −1 at 0.2 A g −1 ) and remarkable cycle life (75% capacity retention after 2000 cycles at 2 A g −1 ). The practical viability of this electrolyte is highlighted by a functional flexible pouch cell incorporating HPM that successfully powered an LED display. This innovative dual-crosslinked HPM electrolyte design provides a valuable strategy for advancing high-performance flexible energy storage systems and electronic devices.
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ACS Applied Polymer Materials
·
2026
·
IF 4.7
Huimin Xie,Mengting She,Dan Zhang,Liping Chen,Dongjian Ding,Luoxin Wang,Hua Wang,Siwei Xiong
This work outlines a flexible skeleton-rigid enhancement strategy to meet the needs for low thermal conductivity, sound absorption, noise reduction, and electromagnetic wave transmission in aerospace, electronic communications, and energy vehicles. It involves creating high-aspect-ratio thermotropic liquid crystalline polyarylate (PAR) nanofibers via melt spinning and wet ball milling to form a customizable 3D network. Rod-shaped SiC particles are then interlocked with these nanofibers through high-speed shear, resulting in a uniform preform. Directional freeze-drying and heat treatment follow, inducing molecular chain relaxation and viscous flow on the PAR surface, forming an in situ diffusion bonding layer at the SiC-PAR interface for efficient coupling and structural reinforcement. The SiC/PAR nanocomposite aerogels feature 72% porosity and an ultralow density of 0.0428 g/cm3. Increasing the SiC content from 70 to 80 wt % boosts its maximum stress by 32.3%. It offers excellent thermal stability at 250 °C, a low thermal conductivity of 0.035 W m–1 K–1, and a sound absorption coefficient of 0.34 in the 0–5500 Hz range. It also maintains strong electromagnetic wave transmission from 9 to 12 GHz. This makes it suitable for multifunctional uses in thermal insulation, sound absorption, and electromagnetic wave transmission.
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Precision Chemistry
·
2026
·
IF 7.7
Liu Jibiao,Xia Hongjin,Zhang Zheng,Yu Zhixuan,Hu Yidong,Wu Zexian,Zhang Qiang,Li Qingyang
A zeolitic
imidazolate framework-8 film is controllably synthesized
on various substrates in 5 min through integrating zinc electrodeposition
and microwave-solvothermal treatment first, representing the cheapest
and fastest route until now. This rapid and cheap strategy opens up
a new avenue for the rational design and synthesis of metal–organic
framework films.
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BIOSENSORS & BIOELECTRONICS
·
2026
·
IF 11.8
Meiting Chen,Junpeng Shi,Shenghang Zhang,Dongqing Zhuang,Yihua Ren,Yun Zhang
Wearable biochemical sensors offer a promising route to noninvasive cortisol analysis. However, existing sweat-cortisol sensing platforms often rely on complex collection devices, electronic readout modules, or dedicated instrumentation. Here, we report a multilayer wood-derived hydrogel patch for portable optical analysis of sweat cortisol. The patch integrates the anisotropic porous framework of delignified balsa wood with a polyacrylamide/poly(vinyl alcohol)/glycerol (PAAm/PVA/glycerol) hydrogel network to form a flexible, hydrophilic sensing layer for pump-free sweat uptake. A cortisol-responsive Förster resonance energy transfer (FRET) probe embedded in the sensing layer enables molecular recognition, while adhesive and encapsulation layers improve wet-skin attachment and water retention. A companion smartphone application provides portable cortisol quantification. Under the tested conditions, the complete patch produced a distinguishable response at the lowest experimentally evaluated concentration of 1 pM in human sweat matrices. Pilot human studies supported the feasibility of interval sweat cortisol analysis during exercise-associated, time-of-day-related, and repeated-measurement scenarios. This work extends wood-derived materials into wearable biosensing and provides a bio-derived integration strategy for portable biochemical analysis.
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2026
·
IF 7.9
Shengkai Liu,Ruimeng Liu,Wenxuan Wang,Dandan Hu,Yu Han,Cong Li,Huiling Li,Chang Wan,Tai Peng,Wei Wang,Daxin Liang
A Hofmann-degraded HTO/CMC/PVA composite film solves powdered HTO’s solid-liquid separation issue via a dense cross-linked network. • Protonated primary amine groups boost lithium selectivity by nearly twofold through the Donnan exclusion effect. • Superior lithium adsorption in real samples, retaining 91.3% capacity after six adsorption-desorption cycles. Rapid global new energy development fuels explosive lithium demand, with efficient purification of salt lake brine and battery leachate a research hotspot. Liquid-phase lithium recovery is severely hindered by coexisting metal ions with ionic radii similar to lithium, leading to high system complexity. Although powdered H 2 TiO 3 (HTO) lithium ion sieves have inherent advantages of stable structure and excellent adsorption capacity, they face critical technical bottlenecks including low solid-liquid separation efficiency and easy co-adsorption by high-valence interfering ions. To solve these problems, this study modified polyacrylamide (PAM) through Hofmann degradation reaction to introduce primary amine groups, and further compounded modified PAM with carboxymethylcellulose (CMC) and polyvinyl alcohol (PVA) to prepare an HTO-loaded CMC/PVA/PAM composite adsorption film. The film forms a dense cross-linked network via intermolecular hydrogen bonds among the three polymers, fundamentally solving the solid-liquid separation issue of powdered HTO. In an alkaline adsorption environment (pH < 10.5), primary amine groups on modified PAM are protonated to form positive charge sites, which exert the Donnan exclusion effect through electrostatic repulsion to effectively inhibit co-adsorption of magnesium, cobalt, manganese and nickel ions, raising the lithium selective separation efficiency of HTO/CPP2 by nearly twofold compared with HTO/CP. The film showed outstanding specific adsorption performance in actual Da Qaidam Salt Lake water samples and waste battery residue leachate, with good cycling stability that retains 91.3% of the initial adsorption capacity after six cycles. This research thus provides a novel and feasible technical solution for the integrated green extraction of high-purity lithium from two typical complex lithium-containing systems. Download: Download high-res image (225KB) Download: Download full-size image
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Gels
·
2026
·Vol. 12
·期 4
·347
·
IF 6.4
Rongyan He,Wenhui Yan,Qiuyu Cao,Chun Zhang,Yuxiu Ye,Yao Chen,Shaoxian Wu,Fei Han,Sulan Luo
Fieldwork carries a high risk of irregular, non-compressible traumatic wounds, which often initiate a vicious cycle of “traumatic bleeding-insect bite-secondary infection”. Conventional dressings cannot combine rapid hemostasis with physical protection against venomous insects, creating an urgent demand for multifunctional field trauma dressings. To solve this problem, this study developed a shape-adaptive bilayer hydrogel that concurrently provides rapid hemostasis, promotes wound repair, and acts as a robust physical barrier. The hydrogel adopts a layered design: the bottom layer (PPTY) achieves autogelation within 3 s upon blood contact, while the top armor protective layer (AP) withstands pressures up to 942 kPa. By incorporating chitosan and sodium citrate into the AP precursor solution, the hydrogel achieved in situ formation within 50 s and developed a stable self-renewing armor layer. The tightly bonded bilayer showed complementary functions. In rat models of femoral artery puncture and tail vein bleeding, PPTY-AP hydrogel significantly reduced blood loss and shortened hemostasis time. Moreover, the hydrogel demonstrated excellent tissue adhesion and moisture retention capacity, promoting full-thickness skin wound healing. This multifunctional, rapidly deployable hydrogel presents a promising solution for field trauma management and offers a new design paradigm for advanced wound dressings.
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