CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jie Wang,Peibo Du,Jinping Zhang,Chuan Zeng,Boxuan Zhu,Zaisheng Cai
Multifunctional wearable heaters demonstrate tremendous potential in personal thermal management (PTM) textiles. However, current PTM systems face some limitation in unitary functionality and single energy sources for practical application, lacking adaptability to dynamic and complex climate changes. Simultaneously, mitigating heat loss caused by sweating in cold weather is equally critical for human thermoregulation. Herein, a thermally stable textile with multienergy-coupled and thermal-moisture management capabilities was developed. The Janus architecture enables simultaneous high solar absorptance (97.5 %) and mid-infrared reflectance (59.36 %). Its exceptional photothermal (1.0 standard sunlight, 60 s, 84.5 °C, 1.025 °C/s) and electrothermal (1.5 v, 60 s, 97.2 °C, 1.098 °C/s) conversion efficiencies enable multienergy-coupled heating, ensuring thermal comfort while superior unidirectional water transport capacity ( R = 315.1 %) can effectively remove sweat from the body. The integrated flame-retardant properties further create a wearable heater combining efficient thermal management with fire safety. Moreover, the material's multifunctionality delivers outstanding electromagnetic interference (EMI) shielding (60.84 dB) and antibacterial efficacy (90 %). This design not only addresses the energy consumption and safety issues of conventional heating materials, but also enhances wearing comfort in extreme environments through thermal-moisture synergistic management, providing novel insights for next-generation intelligent wearable textiles.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Xuming Liu,Yingang Ma,Shuang Chen,Hui Wang,Xin Liu,Qin Zhang
Sustainable hydrogel-based supercapacitors are emerging as promising options for safe and green energy storage solutions, but suffer from low energy density and non-recyclability. Herein, a G-quadruplex-driven hydrogel electrolyte with recyclability and ion channels is successfully designed and applied to construct interface-compatible sustainable supercapacitors. The G-quadruplex-driven supramolecular network with ion channels not only enables hydrogel electrolytes to achieve high ionic conductivity, but also imparts thermally activated reversible regulation of network structure for the construction of interface-compatible supercapacitors. The G-quadruplex-driven hydrogel supercapacitors possess a high specific capacitance of 207.1 mF cm −2 and an energy density of 156.5 μW cm −2 at 0.386 mW cm −2 . More importantly, the G-quadruplex-driven hydrogel electrolyte demonstrates excellent recyclability. The reconstructed hydrogel electrolytes and supercapacitors maintain comprehensive properties similar to those of the original materials. This strategy for the G-quadruplex-driven recyclable hydrogel electrolyte offers valuable insights into sustainable energy materials and energy storage devices.
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Polymers
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2025
·Vol. 17
·期 9
·1169
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IF 4.9
Xue Zheng,Yongjin Zou,Cuili Xiang,An Wei,Yuhong Wei,Lixian Sun
Recent research has focused on developing environmentally friendly flame-retardant coatings to improve the fire resistance of wood. In this study, phytic acid–guanazole (PG), a dual-functional compound synthesized through an ionic reaction between phytic acid and guanazole, was added to KH550-modified urea–formaldehyde resin (KUF) as both a curing agent and flame retardant. The−PO43−groups from phytic acid act as an acid source to accelerate char formation during combustion, while the −NH2groups introduced by guanazole release non-combustible gases to dilute oxygen in the air, synergistically enhancing flame retardancy. Additionally, the hygroscopic−PO43−groups absorb free water in the resin, reducing the curing temperature and accelerating coating solidification. The KH550 coupling agent improves compatibility between KUF and PG while introducing silicon, which forms SiO2during combustion to strengthen the char layer and further enhance flame resistance. Evaluations showed that PG outperforms conventional tannic acid (TA) in curing efficiency and fire resistance. Comprehensive analyses, including Differential Scanning Calorimetry (DSC), Limiting Oxygen Index (LOI), vertical flame tests, and cone calorimetry, confirmed PG’s dual functionality. Scanning Electron Microscope (SEM) and Raman spectroscopy revealed that PG-modified coatings form denser post-combustion char layers, directly linked to improved fire resistance. As a multifunctional additive, PG eliminates the need for separate curing agents and utilizes bio-based phytic acid, offering cost-effective and sustainable advantages for industrial applications.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Zirong Liu,Tingting Yang,Jing Zhou,Juanjuan Xu,Kaiyan Ye,Fangyun Chu,Chengbin He,Runfeng Xiao,Chenlu Jiao,Shaobo Han,Xiaotong Fu,Dongdong Ye
The development of biomass-derived aerogel fibers for thermal insulation via wet spinning requires precise structural control to optimize performance. This study aims to regulate the molecular assembly of cellulose nanounits to engineer regenerated cellulose aerogel fibers (RCAFs) with enhanced insulating properties while reducing energy consumption. By leveraging acid-coagulation baths with varying H + concentrations during wet spinning, we manipulated cellulose chain aggregation to tailor pore size distribution within RCAFs. The resulting fibers achieved ultra-low thermal conductivity (0.0242 W m −1 K −1 ) through pore structure optimization and suppression of heat transfer pathways. This work establishes a scalable strategy for structurally tuning biomass-based aerogel fibers, demonstrating their potential for energy-efficient textiles. Future research should focus on scaling production and expanding applications in multifunctional, sustainable materials.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Shuang Chen,Si Chen,Xuming Liu,Xin Liu,Qin Zhang,Guanghui Gao
Moisture-electric generators (MEGs) are an emerging clean and accessible next generation of green power generation equipment. However, most hygroscopic materials used for MEGs still face challenges of low moisture absorption capacity and lack of anti-bacterial properties, resulting in low output voltage and poor long-term stability. In this work, a liquid-free antibacterial ionic conductive elastomer-based MEG was designed using L-carnitine/glycerol deep eutectic solvent with outstanding mechanical properties and great self-healing ability. Benefiting from the superb hygroscopic ability and ion transport capability, the assembled MEGs can spontaneously generate electricity over a wide relative humidity (RH) range from 30 % to 90 %, which can continuously output 0.83 V of voltage and 57.82 µA of current under 90 % RH for 6 h without obvious electrical performance degradation. Moreover, the MEGs can be directly used for breath monitoring and touch sensing. In addition, the ionic conductive elastomers exhibit long-term antibacterial ability, which ensures that the MEGs work stably for a long time. This work provides a feasible and efficient strategy to construct a green and high-performance energy source for sustainable and long-term applications.
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Small Methods
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2025
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IF 9.1
Yang-Yang Xie,Hao Chen,Ying-Ying Zhang,Si-Chong Chen,Gang Wu,Yu-Zhong Wang
Developing highly active and robust bifunctional electrocatalysts for overall water splitting is of great significance for the production of green hydrogen energy. Herein, heterostructured CoP/NiCoP nanoparticles that are encapsulated one-to-one in nano caves of soda-biscuit-like ultrathin carbon nanosheets (CoP/NiCoP/CMS) are prepared, using melamine-formaldehyde sponge (MS) that grew Co/NiCo hydroxides as precursor and phytic acid (PA) as phosphorus source. Especially, the PA-induced blowing behavior during pyrolysis not only transforms the 3D networks of MS into 2D ultrathin carbon nanosheets of CMS, but also achieves the uniform one-to-one superconfinement of hetero-nanoparticles within both the intralayer nanocaves and interlayer spaces of the carbon nanosheets. Benefit from the superconfinement and interface engineering, CoP/NiCoP/CMS shows low overpotentials of 247 and 124 mV at 10 mA cm −2 , as well as good stabilities toward both oxygen and hydrogen evolution reactions, respectively. Moreover, CoP/NiCoP/CMS//CoP/NiCoP/CMS electrolyzer only requires 1.56 V to achieve 10 mA cm −2 . Experimental and theoretical results demonstrate that heterojunction interfaces can well regulate the electronic structure and enhance the intrinsic activity of CoP/NiCoP/CMS, meanwhile, soda-biscuit-like architecture guarantees the compatibility of high activity and good stability. This work proposes a novel and universal strategy for designing advanced electrocatalysts for efficient overall water splitting.
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POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 12
·e70464
·
IF 3.4
Hanxin Zhang
Enhancing the fire safety of thermoplastic polyurethane (TPU), a polymer prized throughout the automotive industry, without degrading its mechanical properties is a critical industrial challenge. While two-dimensional zirconium phosphate (ZrP) nanosheets offer promising flame-retardant capabilities, their intrinsic aggregation tendency severely compromises their effectiveness in polymer matrices. Herein, ZrP nanosheets were functionalized via the surface self-assembly of a bio-based nitrogen-phosphorus supramolecule derived from phytic acid (PA) and chitosan (CS), yielding the novel nanohybrid PC@ZrP. This nanohybrid's exceptional dispersion and interfacial compatibility within the TPU matrix enable a remarkable dual functionality. At 1 wt% loading, the TPU/PC@ZrP nanocomposite achieves a 42.6% enhancement in tensile strength alongside a 6.1% improvement in elongation at break. The material's fire safety is also substantially enhanced: a 3 wt% incorporation reduces the peak heat release rate and total heat release by 35.5% and 22.6%, respectively, while effectively suppressing smoke and toxic gas emissions. Mechanistic investigations revealed that this performance stems from synergistic flame-retardant actions in both the condensed and gas phases. This work provides a robust, eco-friendly strategy for creating multifunctional additives that bolster the fire safety and mechanical strength of polymer nanocomposites, paving the way for safer materials in demanding sectors like automotive manufacturing.
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Fire-Switzerland
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2025
·Vol. 8
·期 12
·461
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IF 2.7
Lin Shi,Quanyi Liu,Pei Zhu
The aviation industry needs to develop sustainable, fire-safe cabin interior materials. Although wood is eco-friendly, its high flammability makes it challenging to meet flame retardant standards. Enhancing wood fire safety requires the creation of an environmentally friendly and flame retardant coating. In this study, a new type of intumescent flame retardant (IFR) coating was applied to the wood surface using the layer-by-layer (LBL) technique, with fully bio-based chitosan (CS), agar, and phytic acid (PA) as key components. The coated wood demonstrated improved durability, flame resistance, and thermal stability. Particularly, the Wood-2 sample achieved a vertical burning test (UL-94) V-0 rate and a limiting oxygen index (LOI) of 53.1%, which exceeded most previous reported flame retardant coatings. Cone calorimeter test and infrared thermography analysis confirmed that a thick layer of intumescent char formed when the coating was exposed to heat, effectively hindering heat transfer and oxygen supply. This flame retardant effect is attributed to a synergistic mechanism involving nitrogen/phosphorus (N/P) elements. This study offers an environmentally friendly solution for wood flame retardancy and lays an experimental and theoretical foundation for the development of green aviation interior materials.
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POLYMER
·
2025
·
IF 4.5
Xinlong Wang,Xinpeng Hu,Zhanjin Shi,Xianrong Huang,Xiang Lu,Jinping Qu
Heat waves, increasing in frequency, pose significant risks to human health and economic stability. Traditional personal cooling technologies, such as Heating Ventilation and Air Conditioning (HVAC) systems, are energy-intensive and contribute to greenhouse gas emissions, necessitating the development of energy-efficient alternatives. Radiative cooling fabrics (RCFs) could be an ideal method for personal thermal management, while conventional petroleum-based fabrics exhibit low reflectivity and emissivity, limiting their cooling performance. This research introduces hybrid cooling films by incorporating phase change capsules (PCCs) into polypropylene (PP) films treated with a lysozyme-phytic acid coating to enhance hydrophilicity. The resulting RCFs demonstrated significantly improved reflectivity, emissivity and a high latent heat of 108.63 J/g, achieving a cooling performance of 4.62 °C. These findings highlight a scalable approach for manufacturing advanced textiles, contributing to more efficient thermal management strategies in response to rising global temperatures.
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Nature Communications
·
2020
·Vol. 11
·期 1
·1-12
·
IF 12.121
Long Xiangdong,Li Zelong,Gao Guang,Sun Peng,Wang Jia,Zhang Bingsen,Zhong Jun,Jiang Zheng,Li Fuwei
Single-atom metal-nitrogen-carbon (M-N-C) catalysts have sparked intensive interests, however, the development of an atomically dispersed metal-phosphorus-carbon (M-P-C) catalyst has not been achieved, although molecular metal-phosphine complexes have found tremendous applications in homogeneous catalysis. Herein, we successfully construct graphitic phosphorus species coordinated single-atom Fe on P-doped carbon, which display outstanding catalytic performance and reaction generality in the heterogeneous hydrogenation of N-heterocycles, functionalized nitroarenes, and reductive amination reactions, while the corresponding atomically dispersed Fe atoms embedded on N-doped carbon are almost inactive under the same reaction conditions. Furthermore, we find that the catalytic activity of graphitic phosphorus coordinated single-atom Fe sharply decreased when Fe atoms were transformed to Fe clusters/nanoparticles by post-impregnation Fe species. This work can be of fundamental interest for the design of single-atom catalysts by utilizing P atoms as coordination sites as well as of practical use for the application of M-P-C catalysts in heterogeneous catalysis.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Siyuan Sun,Xiaoyun Zhang,Yang Sun,Fan Yang,Tianyu Bai,Cunhui Yu,Kexin Wei,Haojia Zhong,Qiang Wei,Yongfeng Li
Porous carbon coated manganese compounds nanoparticles (MnX, X = P, O or S) is a kind of potential catalysts for oxygen electrocatalysis due to the controllable d-band center, while the complex mechanism and performance difference is yet to reveal due to the lack of catalyst platform. Herein, the ORR catalytic activity and difference reason between manganese phosphide, oxide, and sulfide are tested and discussed via manganese compounds contained carbon-based catalyst platforms synthesis and Density functional theory (DFT). Manganese compounds nanoparticles active sites are uniformly distributed in porous carbon fibers/graphene composite, which guarantees the high mass transfer ability and conductive ability. Experiment results show that catalyst with Mn 2 P active sites exhibits best bifunctional catalytic activity for ORR/OER, which only need 0.89 V (vs. RHE) to achieve a half-wave potential (E 1/2 ) in ORR and 1.58 V (vs. RHE) to reach the overpotential at 10 mA cm −2 (E 10 ) in OER. Theoretical analysis shows that the d-band center of Mn in Mn 2 P is much closer to the Fermi level than MnS and MnO. The rate-determining process of Mn 2 P has the smallest energy barrier of 0.56 eV, indicating the best ORR activity. This work provides paves a solid way for the synthesis of carbon-based catalysts with manganese compounds active sites.
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ACS Catalysis
·
2025
·
IF 13.1
Yutong Li,Haoyue Huang,Qiuhong Wei,Shujun Qiu,Yongpeng Xia,Fen Xu,Lixian Sun,Hailiang Chu
The development of cost-effective and high-efficiency catalysts for hydrogen generation through ammonia borane (AB) hydrolysis remains a significant challenge in the field of clean energy production. Controlled introduction of dopants into catalysts offers a promising strategy to enhance the intrinsic activity of noble metals, such as ruthenium (Ru), by tuning their electronic energy levels. Herein, we explored the interactions between cobalt oxide and Ru nanoparticles (NPs) supported on N and P co-doped carbon-based nanostructures. Notably, the N, P co-doping uniquely modulates the electronic structures, simultaneously tuning the electronic properties of carbon support and cobalt oxide. Therefore, this composite catalyst demonstrates the distinctly enhanced metal–support interactions, achieving a 3.5-fold increase in turnover frequency (TOF) to 1429 molH2·molRu–1·min–1 at 25 °C, compared to the undoped counterparts. Moreover, the catalyst retains over 90% of its initial activity after five cycles of reuse. Experimental and theoretical analyses attribute the superior catalytic activity of Ru@CoOx/NPC to the optimized electronic configuration of CoOx and the downward shift in its d-band center induced by N and P doping. This microstructural alteration further modifies the electronic state of Ru, enhancing H2O adsorption and dissociation. These findings offer a pragmatic tactic for electronic structure modulation to design highly active and selective noble-metal-based catalysts for AB hydrolysis.
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