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Mussel-inspired MXene-functionalized sponge for solar-driven water purification: Photothermal-driven crude oil absorption, solar steam generation, and photothermal sterilization

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Chemical Engineering Journal 2025年 514卷

作者： Zhang, Jingwen Zhang, Xiangyi Mai, Bingjie Fu, Nuo Wang, Shuyu Shang, Bin Deng, Ziwei Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an710119 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies School of Materials Science and Engineering Wuhan Textile University Wuhan430200 China

Solar-driven water purification is recognized as an effective and sustainable technology for tackling the global water crisis by utilizing clean and renewable solar energy. In this study, we present a mussel-inspired MXene-functionalized sponge (denoted as POPM sponge), which features a 3D interconnected porous structure, enhanced surface hydrophobicity, and efficient photothermal conversion capabilities. The design and fabrication of the POPM sponge involve integrating mussel-inspired hydrophobic Ti3C2Tx MXene nanosheets with a 3D interconnected porous PDMS sponge as precursors. This POPM sponge shows considerable potential as a multifunctional photothermal material to promote solar-driven water purification in complex wastewater systems. With its superior surface hydrophobicity and high photothermal conversion efficiency, this POPM sponge effectively recovers high-viscosity crude oil spills through photothermal-driven absorption. Moreover, it functions as an efficient solar evaporator, exhibiting high water evaporation rates and remarkable photothermal conversion efficiencies, thereby facilitating cost-effective solar-driven water purification in complex wastewater systems. Additionally, it possesses remarkable photothermal antibacterial characteristics for the sterilization of common pathogenic bacteria in wastewater, indicating its potential as a promising photothermal material for sterilization applications in such environments. This strategy offers a pathway for the development of multifunctional photothermal materials aimed at enhancing the efficiency of solar-driven water purification in complex wastewater systems within practical applications. © 2025 Elsevier B.V.

关键词： Sterilization (cleaning)

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Electric field-induced alignment and orientation of dielectric fibers: Mechanisms, modelling, and experimental analysis

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Ceramics International 2025年

作者： Li, Wenjie Jiang, Yuncong Wu, Lianfeng Wang, Chen Liu, Hang Jiang, Siyi Zhou, Xin Mu, Yuwen Xu, Lingfeng He, Xiaodong Li, Mingwei He, Fei National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology China State Key Laboratory of Marine Coatings Marine Chemical Research Institute Co. Ltd. China National Key Laboratory for Precision Hot Processing of Materials Harbin Institute of Technology China

Electric field-induced alignment of dielectric fibers (DFs) is a promising method for controlling the orientation of fibers in composites. In this work, we investigated the mechanisms of electric field-induced alignment and its influence on the orientation of DFs in a solution medium. Through modelling and experimental analysis, we demonstrate that the application of an electric field to a suspension of DFs results in the fibers alignment along the direction of the field. This alignment process occurs due to the interaction between the electric field and the dipole moments of the fibers. Furthermore, we explore the factors affecting the process of alignment, such as the strength of the applied electric field, the dielectric constants of fibers and solution, and the characteristics of the fibers. Overall, electric field-induced alignment offers a versatile and efficient method, enabling the development of advanced materials with tailored properties for various industrial applications. © Elsevier Ltd and Techna Group S.r.l.

关键词： Dielectric fibers Electric field Directional orientation Analytical modelling

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When liquid crystals encounter structured light 20

When liquid crystals encounter structured light

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Emerging Liquid Crystal Technologies XX 2025

作者： Zhou, Le Liu, Yuanfeng Neyts, Kristiaan Shen, Yang Sun, Jingbo Zhou, Ji Physics Department Colorado School of Mines 1523 Illinois St. GoldenCO80401 United States School of Materials Science and Engineering State Key Laboratory of New Ceramics and Fine Processing Tsinghua University Beijing100084 China Department of Electronic and Computer Engineering State Key Laboratory of Advanced Displays and Optoelectronics Technologies The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong

ISBN: (纸本)9781510685222

Structured light refers to the light field tailored by various degrees of freedom including intensity, phase, and polarization states in both spatial and temporal domains, which may greatly vitalize the technologies in both optics, such as the next-generation optical communication as well as imaging and the materials science in both fabrications and characterizations. The structured characteristics of the structure light need materials also with structured optical properties that can generate or manipulate structured light in a straightforward way, which can be well satisfied by liquid crystals or glassy liquid crystals such as special spherulites. © 2025 SPIE.

关键词： Degrees of freedom (mechanics)

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Compatible matching and synergy operation optimization of hydrogen-electric hybrid energy storage system in DC microgrid

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Energy Conversion and Management: X 2025年 26卷

作者： Du, Banghua Peng, Yanyu Li, Yang Xie, Changjun Zhu, Shihao Zhu, Wenchao Yang, Yang You, Li Zhang, Leiqi Zhao, Bo Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China School of Automation Wuhan University of Technology Wuhan430070 China Department of Electrical Engineering Chalmers University of Technology Gothenburg41258 Sweden State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan430070 China State Grid Hubei Electric Power Research Institute Wuhan430077 China State Grid Zhejiang Electric Power Research Institute Hangzhou310014 China

Hydrogen energy storage (HES) systems could balanced source-load mismatches in DC microgrids. By combining HES with electrical energy storage (EES), the start-up delay and rapid degradation of HES under fluctuating inputs can be mitigated, enhancing system adaptability. However, without proper power allocation and operational optimization, system efficiency and the lifespan of HES and EES decrease. Accordingly, this paper proposes a compatible matching and synergy operation optimization for hydrogen-electric hybrid energy storage systems (H-E HESS). Firstly, Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN) is developed to decompose power fluctuation signals into frequency components, and the Hilbert transform calculates the energy value to determine high- and low-frequency dividing points. Next, a system power allocation strategy is formulated through the fast response of the EES to compensate for the delay in the start-up of the HES. A multi-objective optimization model is then developed to balance efficiency and lifespan, which is solved by the NSGA-III algorithm. Finally, case studies show that the proposed strategy improves efficiency by 17.95 % and 8.34 %, reduces degradation rates by 1 % and 0.71 %, and shortens system response time in 1 s, compared to Schemes I and II. The strategy's effectiveness is also validated through an experimental platform in a hydrogen-electric coupled DC microgrid demonstration project. © 2025 The Author(s)

关键词： Hydrogen storage

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Effect of Trace V on the Microstructure and Properties of Al-Zn-Mg-Cu Alloys During Heat Treatments by Twin-Roll Casting

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JOM 2025年 1-13页

作者： Meng, Longzhou Xu, Yifei Tang, Hongqun Qian, Xiaoming Peng, Yan Wang, Zhaodong Li, Yong Jezierski, Jan National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University Qinhuangdao 066004 China State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi University Nanning 530004 China Guangxi Advanced Aluminum Processing Innovation Center Co. LTD Nanning 530007 China Department of Foundry Engineering Silesian University of Technology Towarowa 7 Gliwice 44-100 Poland

The impact of trace V on the microstructure and mechanical characteristics of the Al-Zn-Mg-Cu alloy produced by twin-roll casting has been examined. Following homogenization, AlZnMgCu, S-Al₂CuMg, and Al₇Cu₂Fe were among the primary phases that remained after the majority of the eutectic structure dissolved. The impact of dispersoids on the mechanical characteristics and intergranular corrosion resistance were examined, along with the precipitation behavior and recrystallization of Al₃Zr and Al₂₁V₂ in the alloy. The hardness and yield strength of the V-containing alloy increase after homogenization, rolling, solution, and aging treatment. This enhancement may be attributed to the fine Al₃Zr and Al₂₁V₂ particles’ precipitation strengthening, which augmented the traditional η′ phase precipitation strengthening. With the addition of V, the aging treatment alloy’s intergranular corrosion resistance was enhanced since there were fewer high-angle grain boundaries. © The Minerals, Metals & materials Society 2025.

关键词： Intergranular corrosion

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Sym- and Asym-Expanded Heterohelicene Isomers Featuring Extended Multi-Resonance Skeleton for Narrowband Deep-Blue Fluorescence

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Angewandte Chemie - International Edition 2025年第13期64卷

作者： Zeng, Xuan Luo, Xiaofeng Meng, Guoyun Wang, Xuewen Zhang, Dongdong Duan, Lian School of Chemistry Chemical Engineering and Life Science State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of Chemistry Tsinghua University Beijing100084 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu hydrogen Valley Foshan528200 China Center for Flexible Electronics Technology Tsinghua University Beijing100084 China

Expanded heterohelicenes composed of alternating linearly and angularly fused multi-resonance (MR) skeletons have gained wide interest owing to their promising narrowband emissions. Herein, a pair of sym- and asym-expanded heterohelicene isomers was obtained by merging boron/oxygen (B/O)-embedded MR triangulene and indolo[3,2,1-jk]carbazole units via one-pot synthesis. Owing to their fully resonating extended helical skeleton, the target heterohelicenes exhibit a significantly narrowed spectra bandwidth while emission red-shifting, thus affording deep-blue narrowband emission with a peak at approximately 460 nm, full-width-at-half-maximum (FWHM) of only 18 nm, and near-unity photoluminescence quantum yields. In comparison to the symmetrical structure, the asym-expanded heterohelicene displays suppressed aggregation within doped films, thereby showing superior narrowband electroluminescence in devices with CIE coordinates of (0.12, 0.18) and a high external quantum efficiency of up to 25 %, which retains 18.1 % even at a high luminance of 10,000 cd m−1. Overall, this work provides a novel paradigm for the development of narrowband expanded heterohelicenes. © 2025 Wiley-VCH GmbH.

关键词： Electroluminescence

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Co (1 1 1) loaded on amorphous Co(OH)2 − derived porous Ni with maximized Co (1 1 1) utilization for hydrogen evolution reaction

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Fuel 2025年 398卷

作者： Shi, Yuan Wang, Rongjiao Liu, Shimin Zhu, Xiaofeng Jiao, Shuqiang State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals School of Materials Science and Engineering Lanzhou University of Technology Lanzhou Gansu730050 China State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing100083 China Department of Energy and Mineral Engineering The Pennsylvania State University Philadelphia16802 United States

The development of hydrogen energy can help reduce dependence on fossil fuels and achieve low carbon emissions. Hydrogen production from electrolysis water is one of the clean technologies. The preparation of inexpensive and efficient electrodes is the key to improving the efficiency of hydrogen production from water electrolysis. The aim of this study is to design a catalyst with a structure of amorphous Co(OH)2 modified Co (1 1 1) using cobalt-containing waste, to improve the efficiency of water electrolysis for hydrogen production. During the electrode preparation process, the reduction order and reduction efficiency of Co2+ and H2O in the cobalt-containing waste leachate were controlled to regulate the growth of crystals and amorphous. According to the electrocatalytic performance test, the prepared electrode under conditions of 30 min, 0.10 M CoSO4, 12.5 mA/cm2 has excellent activity, with an overpotential of only −56 mV at a current density of −10 mA/cm2 and a Tafel slope of 78.6 mV/dec. In this work, cobalt-containing waste used as the raw material for production of electrode can not only reduce the cost, but also reduce the harm to the environment. Therefore, this study provides an environmentally friendly and economical method for the preparation of a high-performance and low-cost catalytic electrode for hydrogen evolution reaction. © 2025 Elsevier Ltd

关键词： Precious metals

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Graphite emulsion with excellent dispersion stability and rheological property for drawing ultrafine tungsten wire

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Journal of materials Research and technology 2025年 36卷 9473-9480页

作者： Du Zhao Jun Xie Ranran Hou Qinqin Wei Fuguo Lai Buwei Wang Jian Zhang Guoqiang Luo Qiang Shen State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 PR China Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory Chaozhou 521000 Guangdong PR China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 PR China State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan 430070 PR China Hubei Longzhong Laboratory Xiangyang 441000 Hubei PR China Guangdong Xianglu Tungsten Industry Co. Ltd. Chaozhou 515633 PR China

The development of silicon wafers in the photovoltaic industry towards larger and thinner sizes requires ultrafine tungsten wires, and the uniform coating of high-performance graphite emulsion is the key to ensuring the quality of tungsten wires. However, existing graphite emulsion mainly depends on imports, and the limited domestic self-made graphite emulsion shows poor dispersion stability and nonuniform surface coating. This study provides a novel graphite emulsion with excellent dispersion stability and rheological property by introducing carboxymethyl cellulose (CMC). The graphite emulsion with 1.0 % CMC addition has the best dispersion stability, moderate viscosity, and excellent rheological properties. The steric hindrance effect produced by CMC polymer improves the dispersion stability, while the bridges and entanglements of CMC chains regulate the viscosity to ensure uniform coating. The resulted drawn tungsten wire exhibits a large free circle diameter and good surface quality. This work provides a theoretical basis for the preparation of high-performance emulsion and improving the quality of metal wire drawing.

关键词： Graphite emulsion CMC Dispersion stability Rheological property

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High-temperature long-term oxidation resistance of SiCf/SiC-TaB2 composites fabricated by organic-inorganic hybrid precursor infiltration and pyrolysis process

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Corrosion Science 2025年 254卷

作者： Lv, Haozhong Zhu, Shipeng Tang, Yilin Zhang, Boya Sun, Wenting Yang, Yunhua Li, Junping Li, Junning Ge, Min Zhang, Weigang Science and Technology on Advanced Functional Composites Laboratory Aerospace Research Institute of Materials & Processing Technology Beijing100076 China State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

As an ideal material for high-performance aeroengines, silicon carbide ceramic matrix composites (SiC-CMCs) still face challenges such as degradation due to high-temperature oxidation and limitations of traditional processing methods. In this study, the SiCf/SiC-TaB2 composites were fabricated using an organic-inorganic hybrid process combining precursor infiltration and pyrolysis (PIP) and slurry infiltration (SI) techniques. Analysis of both non-isothermal and isothermal oxidation behaviors revealed that the incorporation of TaB2 particles substantially improves the oxidation resistance of SiC-CMCs over a wide temperature range. Moreover, a critical finding is the structural evolution of Ta2O5, formed from the oxidation of TaB2, which transitions from grainy to flaky and eventually to a layered structure, significantly contributing to the composites' long-term oxidation resistance. Compared with the conventional SiCf/SiC composites, the mass change of the SiCf/SiC-TaB2 composites decreased by 34.8 %, 52.0 %, and 86.2 % after oxidation at 1200°C, 1300°C, and 1400°C for 100 hours, respectively. Meanwhile, the strength retention of the composites increased by 6.61 %, 13.90 %, and 6.87 % at these temperatures. These findings underscore the efficacy of the organic-inorganic hybrid precursor infiltration and pyrolysis process in producing high-performance SiC-CMCs with enhanced oxidation resistance and mechanical durability. © 2025 Elsevier Ltd

关键词： Organic-inorganic materials

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Phytic Acid-Modified Black Phosphorus Nanosheets Achieve Ultrahigh Load Bearing and Rapid Superlubrication on Engineered Steel Surfaces

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advanced Functional materials 2025年

作者： Dong, Shaowen Shi, JunQin Li, Hang Zhang, Rui Ma, XiaoYang Yang, YongFeng Cui, ChunJuan Wang, Wei Li, Jinjin State Key Laboratory of Tribology in Advanced Equipment Tsinghua University Beijing100084 China School of Metallurgy Engineering Xi'an University of Architecture and Technology Xi'an710055 China State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal Materials Northwestern Polytechnical University Xi'an710072 China

Achieving superlubrication on engineered steel surfaces is critical to reduce friction and wear in mechanical engineering. Herein, a lubricant with rapid superlubrication properties is designed by phytic acid (PA) modified black phosphorus (BP) nanosheets (PA-BP) into a mixture of poly (aspartic acid) (PASP) and ethylene glycol (EG) solution (PASP/EG). It is able to achieve a superlubrication state (µ ≈ 0.0048) at a high contact pressure of 710 MPa on the engineered steel surface and the time to reach superlubrication (tRs) is only 26 s. The addition of PA-BP could reduce wear rate by 96% on the steel surface (1.51×10−10 mm3 N−1 m−1) compared to the lubrication of PASP/EG. The surface analysis and molecular dynamics simulations show that PA-BP nanosheets are easily adsorbed on the steel surface to form an adsorbent tribofilm. These PA-BP nanosheets occur oxidation during the friction process, which could adsorb water molecules in PASP/EG to form a water layer with a thickness of 18 Å. This leads to the transformation of the shear interface into water layer with low shear strength, thus achieving the rapid superlubrication at high contact pressure. This work provides a new idea for the design of rapid macroscopic superlubrication on engineered steel surfaces for industrial applications. © 2025 Wiley-VCH GmbH.

关键词： Nanosheets

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