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Dual-Fractal Design of Hierarchical RuO₂/NiO Heterojunction for Efficient Seawater Electrooxidation under Optical Field

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advanced Functional materials 2025年

作者： Feng, Yuan Dong, Yuan Ying, Jie Wang, Hong Xiao, Yu-Xuan Tian, Ge Shen, Ling Lu, Yi Geng, Wei Wu, Si-Ming Tiginyanu, Ion Yang, Xiao-Yu State Key Laboratory of Silicate Materials for Architectures & State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Chemistry Chemical Engineering and Life Sciences & Laoshan Laboratory & School of Materials Science and Engineering & Center for Materials Research and Analysis Wuhan University of Technology Wuhan 430070 China School of Chemical Engineering and Technology Sun Yat-sen University Zhuhai 519082 China National Center for Materials Study and Testing Technical University of Moldova Chisinau 2004 Moldova National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory Foshan 528200 China

Photo-assisted electrocatalysis provides an effective approach to remarkably improve the performance of electrocatalytic reactions in seawater. However, the application of this technology requires the catalysts to exhibit high photo-responsiveness, efficient carrier transfer, and strong resistance to Cl^–-induced corrosion. Moreover, the fundamental mechanisms that drive the performance enhancement in optical fields still need to be further investigated. This study presents a novel design of a dual fractal RuO₂/NiO heterojunction with sheet-like fractal NiO support and branched fractal RuO₂ load (denoted as RuO₂(B)/NiO(S)), possessing the features of enhanced photogenerated carriers, efficient directed carrier transfer, and inhibition of Cl⁻-induced corrosion. In comparison to its single-fractal and non-fractal counterparts, RuO₂(B)/NiO(S) exhibits significantly enhanced catalytic activity, superior durability, and morphological and chemical compositional stability during the photo-assisted oxygen evolution reaction (OER) in seawater. Both experiments and theoretical calculations indicate that the significant improvement in photo-assisted OER performance of RuO₂(B)/NiO(S) results from the synergistic effects associated with dual fractal structures, which include more photogenerated carriers in the sheet-like fractal NiO support, rapid directed carrier transfer into the branched fractal RuO₂ load, and its high resistance to Cl⁻-induced corrosion. © 2025 Wiley-VCH GmbH.

关键词： directed carrier transfer fractal structure heterojunction photo-assisted electrocatalysis seawater oxidation

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synthesis and Characterization of CaF_2 Nanoparticles with Different Doping Concentrations of Er^(3+)

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Nano-Micro Letters 2011年第2期3卷 73-78页

作者： Jinghong Song Guanglin Zhi Yan Zhang Bingchu Mei State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Calcium fluoride nanoparticles with various amounts of erbium ion dopants were prepared by CTAB/C_4 H_9OH/C_7H_(16)/H_2O reverse micro-emulsion *** nanoparticles were studied by X-ray diffraction(XRD),transmission electron microscopy(TEM),fourier transform infrared spectroscopy(FTIR),absorption and fluorescence *** XRD patterns indicate a typical cubic fluorite structure and no other *** results show the synthesized particles having uniform grain size and without *** spectra reveal that there are some amounts of-OH,NO_3^-and other organic functional groups on the particle surfaces before the annealing *** absorption peaks and bands are present in the absorption spectra,corresponding to the rich energy levels of erbium *** Red-Shift of absorption bands and Blue-Shift of fluorescence peaks can be attributed to the weakened energy level split as a result of the decrease in crystal field strength.

关键词： CaF2 Nanoparticles Doping Erbium ions

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Chiral polymer-based biointerface materials

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Science China Chemistry 2014年第4期57卷 540-551页

作者： LI MinMin QING GuangYan ZHANG MingXi SUN TaoLei State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Chirality is a unique phenomenon in nature. Chiral interactions play an important role in biological and physiological process- es, which provides much inspiration for scientists to develop cbiral materials. As a breakthrough from traditional materials, bi- ointerface materials based on chiral polymers have attracted increasing interest over the past few years. Such materials ele- gantly combine the advantages of chiral surfaces and traditional polymers, and provide a novel solution not only for the inves- tigation of chiral interaction mechanisms but also for the design of biomaterials with diverse applications, such as in tissue en- gineering and biocompatible materials, bioregulation, chiral separation and chiral sensors. Herein, we summarize recent ad- vances in the study of chiral effects and applications of chiral polymer-based biointerface materials, and also present some challenges and perspectives.

关键词： chirality polymer chiral interaction biointerface materials chiral effects applications

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Enhanced elastocaloric effect in Sc-doped TiNi shape memory alloys

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Scripta Materialia 2025年 265卷

作者： Zhao, Shuangshuang Zhang, Le Liang, Qianglong Liang, Chuanxin Wang, Lu He, Xiangwen Wang, Dong Frontier Institute of Science and Technology State Key Laboratory for Mechanical Behavior of Materials and Interdisciplinary Research Center of Frontier science and Technology Xi'an Jiaotong University Xi'an710049 China School of Physics MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter Xi'an Jiaotong University Xi'an710049 China China Nonferrous Metals Processing Technology Co. Ltd. Luoyang471039 China

We report a giant elastocaloric effect in Sc-doped TiNi shape memory alloys, demonstrating their potential for solid-state cooling applications. The solution-treated (Ti49.2Ni50.8)99.8Sc0.2 alloy achieves a high entropy change of ∼74 J/kg·K and a adiabatic temperature change (∆Tad) of 37.41 K, though it suffers from poor thermal cycling stability. However, after ageing at 623 K for 10 hours, the alloy retains a high ∆Tad of −31.56 K with coefficient of performance (COPmaterials) of 21. Furthermore, it demonstrates a stable ∆Tad of −15.05 K and a high COPmaterials of 32 under reduced stress after 100 loading cycles. Microstructural analysis reveals that the two-step B2-R-B19′ martensitic transformation, combined with the formation of Ni4Ti3 precipitates and Sc2O3/ScO particles, strengthens the matrix and enhances the cycling stability of the elastocaloric effect. This study demonstrates a pathway to achieve a giant elastocaloric effect in Sc-doped TiNi alloys, underscoring their promise for practical solid-state cooling technologies. © 2025 Acta Materialia Inc.

关键词： Thermal cycling

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Alumina Ceramics Fabricated by in-situ Consolidation of Pre-gelling Starch

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Journal of Wuhan University of technology(materials Science) 2018年第3期33卷 758-766页

作者：朱田丽王友法 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

An in-situ consolidation method was developed and optimized to successfully fabricate alumina ceramics using pre-gelling starch. Our results showed that the obtained ceramics have more homogeneous microstructure, higher density, higher flexural strength, and favorable biocompatibility compared to the regular one. During the process, cornstarch granules swelled and deformed but no fracture was observed. After the cornstarch granules bursted, alumina particles were suspended uniformly in the three-dimensional network structure to generate a much smoother surface. Below 0.5 wt% higher cornstarch content increased the flexural strength of prepared ceramics, while above 0.5 wt% the mechanical properties were compromised. Therefore the cornstarch content of 0.5% was the optimal concentration to achieve the highest mechanical strength of the prepared ceramics, with a measured flexural strength of 341 MPa, and a relative density of 96.01%.

关键词： pre-gelling starch in-situ consolidation alumina-ceramic flexural strength biocompatibility

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High-contrast in vivo fluorescence imaging exploiting wavelengths beyond 1880 nm

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Nature Communications 2025年第1期16卷 1-12页

作者： Li, Jiayi Xia, Qiming Wu, Tianxiang Zhang, Yuhuang Peng, Shiyi Li, Yifei Li, Yixuan Lin, Hui Zhang, Mingxi Qian, Jun State Key Laboratory of Extreme Photonics and Instrumentations Centre for Optical and Electromagnetic Research College of Optical Science and Engineering International Research Center for Advanced Photonics Zhejiang University Hangzhou China Department of General Surgery Sir Run Run Shaw Hospital Zhejiang University School of Medicine Hangzhou China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China

The second near-infrared (NIR-II) window is widely acknowledged for its excellent potential in in vivo fluorescence imaging. Currently, NIR-II fluorescence imaging predominantly operates within the 900-1880 nm spectral range, while the region beyond 1880 nm has been disregarded due to the large light absorption of water. Based on a refined understanding of the effect of light absorption on imaging, we propose an approach that utilizes the previously neglected region surrounding the water absorption peak at ~1930 nm for imaging. Both simulations and experiments confirm that the water absorption contributes positively to imaging, enabling high-contrast in vivo fluorescence imaging in the 1880-2080 nm window. To further assess the applicability of this approach in different biological media, we extend our focus to fluorescence imaging in adipose tissue. This leads to the expansion of the imaging window to 1700-2080 nm, owing to the unique light absorption characteristics of adipose tissue. Our results demonstrate that the 1700-2080 nm region provides optimal imaging quality in adipose tissue, attributing to its moderate absorption and low scattering. This work advances our understanding of the interplay between light absorption and photon scattering in bioimaging, providing an insight for selecting optimal imaging windows to achieve high-contrast fluorescence imaging. © The Author(s) 2025.

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5H-Fluoreno [3,2-b:6,7-b’] Dithiophene Based Non-fullerene Small Molecular Acceptors for Polymer Solar Cell Application

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Journal of Wuhan University of technology(materials Science) 2019年第5期34卷 1220-1227页

作者： WU Jiansheng XIAO Shengqiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Two novel non-fullerene small molecule acceptors were prepared with the conjugated backbone of 5 H-fluoreno[3, 2-b:6, 7-b’] dithiophene carrying the electron deficient unit of dicyanomethylene indanone(DICTFDT) and rhodanine(TFDTBR), respectively. The two acceptors exhibited excellent thermal stability and strong absorption in the visible region. The LUMO level is estimated to be at-3.89 eV for DICTFDT and-3.77 eV for TFDTBR. When utilized as the acceptor in bulk heterojunction polymer solar cells with the polymer donor of PBT7-Th, the optimized maximum power conversion efficiency of 5.12% and 3.95% was obtained for the device with DICTFDT and TFDTBR, respectively. The research demonstrates that 5 H-fluoreno[3, 2-b:6, 7-b’] dithiophene can be an appealing candidate for constructing small molecular electron acceptor towards efficient polymer:non-fullerene bulk heterojunction solar cells.

关键词： polymer solar cells bulk heterojunction non-fullerene acceptor

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Engineering high-performance argyrodite sulfide electrolytes via metal halide doping for all-solid-state lithium metal batteries

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Energy Storage materials 2025年 77卷

作者： Li, Yang Wu, Gang Fan, Xiaomeng Li, Dabing Liu, Hong Zhao, Xiaoxue Ren, Wanqing Lei, Peng Zhao, Xianyi Wang, Xun Wang, Guoxu Gao, Lei Nan, Ce-Wen Fan, Li-Zhen Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing 100083 China School of Materials Science and Engineering Guilin University of Technology Guilin541004 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China School of Chemistry and Chemical Engineering Heze University Heze274015 China

Solid-state electrolytes (SSEs) play a crucial role in the operation of all-solid-state lithium metal batteries (ASSLMBs). Among them, sulfide SSEs have attracted particular attention due to their high ionic conductivity. However, the incompatibility of sulfide SSEs with lithium anodes and the inherent air instability severely impact battery cycling performance. Here, we successfully synthesize halogen-rich lithium argyrodites with the general formula Li5.5+3xP1−xCuxS4.5Cl1.5−2xBr2x. The incorporation of Cu and Br alter the spatial arrangement and electronic distribution of structure. Given that the anion disorder positively affects Li-ion dynamics, the ultrahigh ionic conductivity of 10.3 mS cm−1 at room temperature has been achieved in Li5.8P0.9Cu0.1S4.5Cl1.3Br0.2 (LPSC-CB). Importantly, benefiting from the robust and stable interlayer, the lithium symmetric batteries deliver prolonged plating/stripping over 3000 h at 0.2 mA cm−2. Furthermore, the density functional theory calculations were used to prove the mechanisms of high chemical stability. Notably, the LPSC-CB electrolyte has remarkable applicability in ASSLMBs. The full batteries of FeS2/LPSC-CB/Li deliver outstanding discharge-specific capacities of 788.9 mAh g−1 and robust cycling stability (>4.02 mAh cm−2 after 200 cycles). The versatile CuBr2 substitution in the most promising argyrodite electrolytes is considered as a valid strategy to realize high ionic conductivity and air-stabilized sulfide SSEs for large-scale applications. © 2025 Elsevier B.V.

关键词： Sulfur compounds

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All-nanofiber self-powered electronic skin with electrospinning humidity-controlled structure for human muscle detection during fitness

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Composites Communications 2025年 57卷

作者： Wu, Songkai Zhao, Yi Wang, Jia Zhao, Xinxin Zhai, Wei Zhu, Xiaobo Wan, Pengbo Cui, Meijie Gao, Liang Dai, Kun Liu, Chuntai Shen, Changyu School of Materials Science and Engineering The Key Laboratory of Material Processing and Mold of Ministry of Education Zhengzhou University Henan Zhengzhou 450001 China State Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China College of Materials Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China

With the development of artificial intelligence and human-machine interaction technology, achieving all-nanofiber self-powered electronic skin (e-skin) with excellent sensing performance is still a challenge. In this work, polyvinylidene fluoride/polydimethylsiloxane (PVDF/PDMS) nanofiber membranes (PVPD-NFM) were prepared by optimizing the electrospinning humidity parameters. It is determined that when the humidity is 60 %, the roughness of the PVPD-NFM is 7.562 μm, and the content of β-phase is 64 %. After that, the content of PDMS was optimized. Compared with pure PVDF, when the content of PDMS was 42 wt%, the charge density increased from 1.6 μC/m² to 13.7 μC/m², which increased by 8.6 times, respectively. Furthermore, PVPD-NFM also possesses excellent breathability, hydrophobicity, and self-cleaning properties. Finally, the PVPD-NFM was fabricated into e-skin to detect muscle activity in fitness, indicating a promising application prospect in preventing sports injury. © 2025 Elsevier Ltd

关键词： Electrospinning Humidity-regulated structure Self-cleaning Self-powered e-skin

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Effect of Molecular Weight on Thermoelectric Performance of P3HT Analogues with 2-Propoxyethyl Side Chains

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Journal of Wuhan University of technology(materials Science) 2024年第2期39卷 268-281页

作者：董得福 WANG Wei ZHAN Chun LI Chenglong ZHOU Qisheng 肖生强 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

By replacing hexyl chains in poly(3-hexylthiophene)(P3HT)with 2-propoxyethyls,four poly(3-(2-propoxyethyl)thiophene)(P3POET)homopolymers with comparable polydispersity indexes(PDI)and regioregularities were prepared herein in addition with step increment of about 7 kDa on numberaverage molecular weight(M_(n))from around 11 to 32 kDa(accordingly denoted as P11k,P18k,P25k,and P32k).When doped in film by FeCl_(3)at the optimized conditions,the maximum power factor(PF_(max))increases greatly from 4.3μW·m^(-1)·K^(-2)for P11k to 8.8μW·m^(-1)·K^(-2)for P18k,and further to 9.7μW·m^(-1)·K^(-2)for P25k,followed by a slight decrease to 9.2μW·m^(-1)·K^(-2)for *** close Seebeck coefficients(S)at PF_(max)are observed in these doped polymer films due to their consistent frontier orbital energy levels and Fermi *** main contribution to this PF_(max)evolution thus comes from the corresponding conductivities(σ).Theσvariation of the doped films can be rationally correlated with their microstructure evolution.

关键词： conjugated polymer molecular weight microstructure thermoelectric performance

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