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Bioinspired mechanically interlocking holey graphene@SiO_(2)anode

Interdisciplinary materials 2022年第4期1卷 517-525页

作者： Fei Wang Xiaobin Liao Haoyu Wang Yan Zhao Jian Mao Donald G.Truhlar College of Materials Science and Engineering Sichuan UniversityChengduChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanChina School of Materials Science and Engineering University of New South WalesSydneyNew South WalesAustralia The Institute of Technological Sciences Wuhan UniversityWuhanChina Department of Chemistry Chemical Theory CenterMinnesota Supercomputing InstituteUniversity of MinnesotaMinneapolisMinnesotaUSA

Mechanically interlocking structures that can enhance adhesion at the interface and regulate the stress distribution have been widely observed in biological *** by the biological structures in the wings of beetles,we synthesized a holey graphene@SiO_(2)anode with strong mechanical interlocking,characterized it electrochemically,and explained its performance by finite element analysis and density functional calcula*** mechanically interlocking structure enhances lithium-ion(Li^(+))storage by transmitting the strain from SiO_(2)to the holey graphene and by a mechano-electrochemical coupling *** interlocking fit hinders the abscission of SiO_(2)and the distinctive structure reduces the stress and strain of SiO_(2)during(de)*** positive mechano-electrochemical coupling effect preserves the amount of electrochemically active phase(LixSi)during cycles and facilitates Li+***,the capacity shows only a slight attenuation after 8000 cycles(cycling stability),and the specific capacity is~1200 mA h g^(−1)at 5 A/g(rate-performance).This study furnishes a novel way to design high-performance Li^(+)/Na+/K^(+)/Al3^(+)anodes with large volume expansion.

关键词： holey graphene mechanically interlocking mechano-electrochemical coupling effect simulation SiO_(2) anode

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One-Pot Synthesis of Nitrogen-Doped Carbonized Polymer Dots with Tunable Emission for Multicolor Light-Emitting Diodes

SSRN

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SSRN 2023年

作者： Zhao, Liuxi Cao, Xiyue Jang, Xuanfeng Zhang, Yuhong Shang, Bin Sun, Zhengguang Zhan, Yuan Key Laboratory for the Green Preparation and Application of Functional Materials Ministry of Education Hubei Key Laboratory of Polymer Materials School of Materials Science and Engineering Hubei University Wuhan430062 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies School of Materials Science and Engineering Wuhan Textile University Wuhan430200 China

Carbonized polymer dots (CPDs) have highly potential application value in the field of optoelectronic devices due to their preferable stability, excellent optical properties and low cost. Here, the nitrogen-doped carbonized polymer dots (HNCDs) with self-quenching-resistant fluorescence were prepared via a simple solvothermal method with citric acid, urea and 2-hydroxyethyl methacrylate (HEMA) as raw materials. The structure and optical properties of the HNCDs have been explored in detail by various contrast experiments. The results show that HEMA form the poly(HEMA) to modify on the surface of carbonized core, which can overcome the quenching effect of carbonized core. The nitrogen doping is crucial for the red shift emission of solid-state HNCDs. Furthermore, the HNCDs exhibit concentration-dependent emission and excellent compatibility with silicone sol, which lead to their emission red shifted from blue to red with increasing concentration. The HNCDs were further applied to construct the light-emitting diodes (LEDs), and the multicolor LEDs ranging from blue to red can be prepared by simply varying the type of chips and adjusting the concentration of HNCDs in encapsulating material. © 2023, The Authors. All rights reserved.

关键词： Silicones

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Single copper sites dispersed on hierarchically porous carbon for improving oxygen reduction reaction towards zinc-air battery

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Nano Research 2021年第4期14卷 998-1003页

作者： Wenjie Wu Yan Liu Dong Liu Wenxing Chen Zhaoyi Song Ximin Wang Yamin Zheng Ning Lu Chunxia Wang Junjie Mao Yadong Li State Key Laboratory of Heavy Oil Processing College of New Energy and MaterialsChina University of PetroleumBeijing 102249China Key Laboratory of Functional Molecular Solids Ministry of EducationAnhui Province Key Laboratory of Optoelectric Materials Science and Technology and Anhui Laboratory of Molecule-Based MaterialsAnhui Normal UniversityWuhu 241002China State key Lab of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Department of Chemistry Tsinghua UniversityBeijing 100084China

The demand for high-performance non-precious-metal electrocatalysts to replace the noble metal-based catalysts for oxygen reduction reaction(ORR)is intensively ***,single-atomic copper sites supported on N-doped three-dimensional hierarchically porous carbon catalyst(Cu_(1)/NC)was prepared by coordination pyrolysis ***,the Cu_(1)/NC-900 catalyst not only exhibits excellent ORR performance with a half-wave potential of 0.894 V(***)in alkaline media,outperforming those of commercial Pt/C(0.851 V)and Cu nanoparticles anchored on N-doped porous carbon(CuNPs/NC-900),but also demonstrates high stability and methanol ***,the Cu_(1)/NC-900 based Zn-air battery exhibits higher power density,rechargeability and cyclic stability than the one based on Pt/*** experimental and theoretical investigations demonstrated that the excellent performance of the as-obtained Cu_(1)/NC-900 could be attributed to the synergistic effect between copper coordinated by three N atoms active sites and the neighbouring carbon defect,resulting in elevated Cu d-band centers of Cu atoms and facilitating intermediate desorption for ORR *** study may lead towards the development of highly efficient non-noble metal catalysts for applications in electrochemical energy conversion.

关键词： single atomic sites catalysts nitrogen-doped carbon materials oxygen reduction reaction carbon defect non-noble metal

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High-flux and anti-salt solar desalination via scalable photothermal textiles with vertically confined water layers

Device

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Device 2025年

作者： Zhang, Qian Wang, Manyu Yu, Hao Xu, Ning Xiao, Xingfang Pan, Luqi Zhu, Jia Xu, Weilin State Key Laboratory of New Textile Materials and Advanced Processing Wuhan Textile University Wuhan 430200 China National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Jiangsu Key Laboratory of Artificial Functional Materials Frontiers Science Center for Critical Earth Material Cycling Nanjing University Nanjing China

Interfacial solar evaporation plays a crucial role in desalination because of its sustainable, eco-friendly characteristics. However, major challenges to simultaneously achieving salt rejection, fast evaporation, and heat localization in solar desalination devices still remain. We propose a photothermal textile with vertically confined water layers for scalable, high-flux, long-term-reliable solar desalination. The photothermal textile consists of outer layers (carbon fibers) for solar absorption and core layers (hollow yarns) for water-feeding channels. Three-dimensional evaporators possess large evaporation areas and, thus, high evaporation rates, and the vertically confined water layers in the hollow yarns enable natural convection for effective salt rejection with negligible heat loss. Consequently, this photothermal textile achieves an evaporation rate of 2.05 kg m⁻² h⁻¹ in high-salinity brine (15 wt % NaCl solution) under 1-sun irradiation, with long-term reliability of over 20 days in continuous outdoor operation. © 2025 The Author(s)

关键词： DTI-2: Explore high flux photothermal textile salt rejection solar desalination vertically confined water layer

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Sustainable Strategy for Lignin Etherification and its Promotion of Anti-Uv Aging Pla Biocomposite

SSRN

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SSRN 2024年

作者： Li, Bowen Zhu, Xinyi Xu, Chaoqun Zhang, Xiaofang Fan, Yimin Yu, Juan Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials College of Chemical Engineering Nanjing Forestry University Nanjing210037 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China

Lignin functionalization in sustainable ways holds significant importance for its high-value utilization, however, it remains challenging to simultaneously achieve highly efficient modification of both the phenolic (Phe)-OH and aliphatic (Aliph)-OH of *** this study, a series of highly hydroxyl-substituted alkali lignin phenyl propylene ketone ethers (ALKs) were obtained under 50 °C without any by-products via a mild and sustainable hydroxyl-yne click reaction. Notably, phenolic (Phe)-OH content of lignin decreased from 4.12 mmol g-1 to 0.07 mmol g-1 with a conversion rate of 98%, while the aliphatic (Aliph)-OH content of lignin decreased from 2.57 mmol g-1 to 0.10 mmol g-1 with a conversion rate of 96%. Owing to the efficient etherification, ALK showed excellent organic solvent (such as trichloromethane, DCM, THF, and acetone) solubility, which thereby improving the interfacial compatibility between ALK and PLA matrix. 3wt% ALK obviously enhanced the mechanical properties of ALK/PLA biocomposite films, with the yield strength, breaking strength, and Young's modulus improving by 114.2%, 30.7%, and 250.2%, respectively. Additionally, due to the newly introduced vinyl ether bonds (-C-O-C=C-) in ALK by hydroxyl-yne click reaction, only 1% ALK could endow ALK/PLA biocomposite with excellent UV shielding (100%), high transmittance (84.5%) and Anti-UV aging property. The yield strength and Young's modulus represented an increase of 209% and 86%, respectively, even after 3 hours of UV-irradiation. This study presents an environmentally friendly lignin functionalization method that unleashes the inherent Anti-UV aging properties of lignin, opening new avenues for the development of high-performance lignin-based composites. © 2024, The Authors. All rights reserved.

关键词： Lignin

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Tunable broadband near-infrared luminescence of chromium with self-induced valence variation in Sr3In2Ge3O12

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Ceramics International 2025年

作者： Yang, Xiongfeng Fan, Xing He, Fangqian Zhang, Jianjie Tang, Chunhai Su, Liumei State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials School of Resources Environment and Materials Guangxi University Nanning530004 China School of Materials and Environment Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization Guangxi Colleges and Universities Key Laboratory of Eco-friendly Materials and Ecological Restoration Guangxi Minzu University Nanning530105 China

The demand for high-performance near-infrared (NIR) light-emitting materials has grown in recent years due to their great potential in numbers of technological fields, including non-destructive testing, optical telecommunications, and biological imaging. Herein, we present a novel Cr-activated NIR light-emitting garnet (Sr3In2Ge3O12) material with broadband dual-emission at NIR-I (860 nm, FWHM = 120 nm) and NIR-II (1480 nm, FWHM = 280 nm) regions under blue light excitation. Cr-doping results in the generation of multiple impurity levels within the band structure of Sr3In2Ge3O12, inducing a change in the host from an indirect to a direct band gap n-type semiconductor. Thanks to the multiple-sites occupancy of Cr ions in Sr3In2Ge3O12, the NIR dual-emission is verified to derive from the self-induced valence variation of Cr3+ and the intervalence energy transfer associated with Cr3+-Cr4+ aggregation. The large thermal activation energy and the weak electron-phonon coupling effect contribute to excellent thermal stability of the phosphor, with the emission intensities of Cr3+ and Cr4+ at 423 K maintaining 81.9 % and 86.3 % of that at room temperature. Moreover, the incorporation of Ca2+ into the Sr2+ lattice site enables the realization of tunable NIR emission in Sr3In2Ge3O12:Cr. The Sr3In2Ge3O12:Cr phosphor can be effectively utilized for the non-invasive detection of functional groups in a liquid medium. This work provides new insights into the design of broadband dual-emission light-emitting materials, which can be achieved by selecting an appropriate host to induce a valence variation in transition metal activators. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Phosphors

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Covalent organic framework-based nanoplatforms with tunable mechanical properties for drug delivery and cancer therapy

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Mechanobiology in medicine 2023年第2期1卷 100024页

作者： Liefeng Hu Yonggang Lv School of Materials Science and Engineering Wuhan Textile University Wuhan 430200 PR China. State Key Laboratory for New Textile Materials & Advanced Processing Technology Wuhan Textile University Wuhan 430200 PR China.

Covalent organic frameworks (COFs) are emerging crystalline porous materials composed of covalently linked and periodically arranged organic molecules, which exhibit mechanical properties mediated by structural diversity. Meanwhile, the tunable mechanical properties of COFs have been widely applied in drug delivery and cancer therapy. Herein, we first summarize the regulation strategies of COFs with different mechanical strengths, such as structural dimensions, pore sizes, and host-guest interaction forces. Then, the remarkable achievements of COFs with different mechanical properties in drug delivery and cancer therapy in recent years are introduced. Finally, the mechanical strength regulation of COFs and the remaining challenges for biomedical applications are presented. This review provides a more comprehensive understanding of the application of COFs systems with tunable mechanical properties in the field of biomedicine, and promotes the development of interdisciplinary research between COFs materials and nanomedicine.

关键词： Cancer therapy Covalent organic frameworks Drug delivery Mechanical properties Nanomedicine

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Development of Photothermal-Heat Storage Concrete Incorporating Super Absorbent Polymer

SSRN

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SSRN 2023年

作者： Wang, Shizhe Wu, Haiping Yang, Wen Wang, Wei Zhu, Zhibo Nie, Kun Wang, Luoxin Wang, Hua Wu, Jing College of Materials Science and Engineering State Key Laboratory of New Textile Materials & Advanced Processing Technology Wuhan Textile University Wuhan430200 China Building Materials Science Academy of China West Construction Group Co. Ltd. Chengdu610213 China

Solar energy absorbed and stored in building materials can reduce heating/cooling loads and energy consumption in buildings. In this study, photothermal-heat storage concrete (PHSC) was developed by using carbon black as the photothermal material and pre-soaked super absorbent polymer (SAP) as the heat storage medium. The resulting photothermal conversion performance and heat storage performance of PHSC were investigated. The results showed that PHSC exhibit excellent photothermal conversion performance, specific heat capacity and heat storage capacity. The heat stored in the PHSC was 1.48 times higher than control concrete when both were exposed to sunlight during the day. PHSC converts and stores the absorbed sunlight during the day and releases the stored heat at night when the temperature drops. PHSC is a ‘green’, low-carbon and eco-friendly building material, its application in building structures can effectively reduce energy consumption by lowering heating and cooling loads. © 2023, The Authors. All rights reserved.

关键词： Heat storage

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Novel implantable devices delivering electrical cues for tissue regeneration and functional restoration

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Medicine in Novel technology and Devices 2022年第4期16卷 70-78页

作者： Liu Wang Kuntao Chen Yubo Fan Lan Yin Key Laboratory of Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringAnd with the School of Engineering MedicineBeihang UniversityBeijing100083PR China School of Materials Science and Engineering The Key Laboratory of Advanced Materials of Ministry of EducationState Key Laboratory of New Ceramics and Fine ProcessingCenter for Flexible Electronics TechnologyTsinghua UniversityBeijing100084PR China

Millions of people suffer from tissue diseases and organ dysfunction,such as bone or nerve defects,spinal cord injuries and arrhythmia,which often leads to morbidity and *** stimulation as a promising nonpharmacological technique has been proven to be effective in promoting tissue regeneration and functional ***,existing clinical electrical therapies are often limited to intraoperative window or percutaneous stimulation that suffer from insufficient time frame and potential infection *** overcome these challenges,innovative electrical stimulation implants with miniaturized,self-powered,flexible or biodegradable features have been *** review summarizes recent advances of novel materials strategies and device schemes for tissue regeneration and/or functional restoration of bones,nerves,gastrointestinal tracts,cardiac systems,*** on future directions of electrical stimulation devices are given at the end.

关键词： electrical stimulation functional

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An ultralight,flexible,and biocompatible all-fiber motion sensor for artificial intelligence wearable electronics

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npj Flexible Electronics 2022年第1期6卷 235-242页

作者： Sen Lin Shuang Hu Wei Song Miaoqing Gu Junchen Liu Jianan Song Zhenglian Liu Ziwei Li Kun Huang Yufeng Wu Ming Lei Hui Wu School of Physical Science and Technology Guangxi UniversityNanning 530004China Advanced Institute for Brain and Intelligence Guangxi UniversityNanning 530004China State Key Laboratory of Information Photonics and Optical Communications and School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

new-generation human body motion sensors for wearable electronics and intelligent medicine are required to comply with stringent requirements in terms of ultralight weight,flexibility,stability,biocompatibility,and extreme ***,conventional sensors are hard to fulfill all these criteria due to their rigid structure,high-density sensing materials used as the constituents,as well as hermetical and compact assembly ***,we report an ultralight sensing material based on radial anisotropic porous silver fiber(RAPSF),which has been manufactured by phase separation and temperature-controlled grain growth strategy on a modified blow-spinning *** resistance of RAPSF could be dynamically adjusted depending on the deflected ***,an all-fiber motion sensor(AFMS)with an ultra-low density of 68.70 mg cm^(−3) and an overall weigh of 7.95 mg was fabricated via layer-by-layer *** sensor exhibited outstanding flexibility,breathability,biocompatibility,and remarkable body motion recognition ***,the AFMS was shown to have great potential as an artificial intelligence throat sensor for throat state identification at the accuracy above 85%,allowing one to spot the early onset of the viral throat illness.

关键词： fiber artificial motion

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