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Increased corrosion resistance of steel substrates coated with epoxy resin/ZnO/Fe 2 O 3 obtained from electric arc furnace dust recovery

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Journal of materials Research and Technology 2025年 36卷 9462-9472页

作者： Mário Andrean Macedo Castro Tanara Caroline Nunes Nicácio Antonio Carlos do Nascimento Santos José Eudes Lima Santos Luis David Loor-Urgilés Antonio Eduardo Martinelli Fabiana Villela da Motta Mauricio Bomio LSQM–Laboratory of Chemical Synthesis of Materials Department of Materials Engineering Federal University of Rio Grande do Norte – UFRN P.O. Box 1524 Natal RN Brazil Institute of Chemistry Federal University of Rio Grande do Norte 59078-970 Natal RN Brazil Postgraduate Program in Materials Science and Engineering Federal University of Rio Grande do Norte 59078-900 Natal RN Brazil

The sustainable management of metal-rich industrial wastes, such as electric arc furnace dust (EAFD), remains a critical challenge for the steel industry. Although previous studies have investigated metal recovery routes and their application in functional materials, few have explored the reuse of these wastes as active components in anticorrosive coatings. This work proposes an innovative approach for valorizing EAFD, recovering iron (Fe 2 O 3 ) and zinc (ZnO) oxides through acid leaching, basic precipitation, and heat treatment. After recovery, mixed ZnO/Fe 2 O 3 oxides were prepared in different proportions and incorporated as nanofillers in an epoxy matrix, creating a hybrid coating aimed at protecting carbon steel against corrosion. The obtained materials were characterized by XRF, XRD, FTIR, SEM, and BET analysis, while the mechanical and anticorrosive properties were evaluated by Vickers hardness tests, Potentiodynamic Polarization and Electrochemical Impedance Spectroscopy. After 240 h of immersion in saline solution and 360 h of Salt-spray test, the coating with the highest Fe 2 O 3 content demonstrated superior performance, reducing the corrosion rate by up to 100 times and increasing the load transfer resistance by up to 80 times. The contribution of this study lies in both the proposal of a new cycle for reusing steel waste and in demonstrating a viable route for developing high-performance anticorrosive coatings with potential for industrial application in sectors such as oil and gas. The combination of waste recovery and functional improvement of the material positions this study as a technologically and environmentally relevant solution.

关键词： EAFD ZnO Fe 2 O 3 Epoxy resin Anti-corrosive coatings

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Emerging chemistry in improving the metabolism or degradability of organic/polymeric conjugated materials for biomedical applications

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Interdisciplinary materials 2025年第1期4卷 52-74页

作者： Yu Tian Wenbo Wu Zhong'an Li Department of Chemistry Institute of Molecular Aggregation ScienceTianjin UniversityTianjinChina The Eighth Affiliated Hospital Sun Yat-sen University ShenzhenChina Hubei Engineering Research Center for Biomaterials and Medical Protective Materials Key Laboratory for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhanChina

Organic/polymeric conjugated materials are playing an increasingly important role in biomedical *** special properties such as fluorescence,photosensitization,and photothermal conversion make them promising can-didates for disease diagnosis and ***,these conjugated materials are usually extremely hydrophobic,so they tend to take a relatively long time to be excreted or metabolized after theranostics,leading to unpredictable side effects,which has made their clinical implementation a daunting *** this review,we will focus on the safety of organic/polymeric conjugated materials for biomedical applications and discuss in detail the general strategies to improve their metabolism or degradability by rational molecular design,based on representative ***,the challenges and opportunities are also presented by considering further perspectives.

关键词： conjugated materials degradability metabolism optical bioimaging phototherapy

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Injury and obesity differentially and synergistically induce dysregulation of synovial immune cells in osteoarthritis

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Annals of the Rheumatic Diseases 2025年第6期84卷 1033-1044页

作者： Harasymowicz, Natalia S. Harissa, Zainab Rashidi, Neda Lenz, Kristin Tang, Ruhang Guilak, Farshid Department of Orthopaedic Surgery Washington University St. Louis MO United States Shriners Hospitals for Children St. Louis MO United States Center of Regenerative Medicine Washington University St. Louis MO United States Department of Orthopaedic Surgery Operations University of Utah Salt Lake City UT United States Molecular Medicine Program University of Utah Salt Lake City UT United States Department of Biomedical Engineering Washington University in Saint Louis St. Louis MO United States Department of Mechanical Engineering & Materials Science Washington University St. Louis MO United States

Objectives: The heterogeneity and phenotype of immune cells orchestrate many physiologic and pathologic processes. Recent evidence suggests that immune cells play critical roles in the progression of osteoarthritis (OA). We hypothesised that injury and obesity, two major risk factors for OA, affect the immunophenotype of the synovium, the primary reservoir of immune cells in the joint. Methods: Using single-cell transcriptomics, immunoprofiling, transgenic mouse models, and genetic fate mapping methods, we characterised the presence and fate of multiple populations of immune cells found in the knee joint capsule. Results: We found that joint injury and obesity differentially and synergistically alter the architectural, cellular, and molecular profiles of the synovial capsule. We observed fewer patrolling monocytes in obese animals and found a significantly higher influx of proinflammatory monocyte-derived macrophages in the first 3 days after joint injury in obese compared with that in control animals. We also showed a significant loss of barrier-forming synovial lining macrophages 3 days after destabilisation of medial meniscus surgery, with a significant restoration of their numbers in normal weight but not in obese mice in advanced stages of OA. Finally, we characterised the presence and changes of other immune cell subtypes, including T, B, and mast cells and neutrophils, as well as local synovial fluid cytokines associated with injury and obesity. Conclusions: Our data revealed that injury and obesity independently and synergistically contribute to the dysregulation of the synovial immune landscape, providing new insight into their role in the pathogenesis of OA. © 2025 The Authors

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Reactive Synthesis and Ultrafast Sintering of Refractory Compositionally Complex Alloy-Carbide Composites

SSRN

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SSRN 2025年

作者： Shivakumar, Sashank Luo, Jian Aiiso Yufeng Li Family Department of Chemical and Nano Engineering University of California La Jolla San DiegoCA92093 United States Program in Materials Science and Engineering University of California La Jolla San DiegoCA92093 United States

Refractory compositionally complex alloy (RCCA) NbMoTaW with a well-dispersed compositionally complex carbide (CCC) reinforcing secondary phase is made through high-energy ball milling (HEBM) and ultrafast high-temperature sintering (UHS). Stearic acid is used as a process control agent (PCA) for HEBM and a carbon source to form a controllable fraction (~2-20 vol%) of CCC in-situ via reactive synthesis. Ultrahigh heating rates of ~100 °C/s enable sintering of dense (~93-97 % relative densities) bulk compacts of RCCA-CCA composites at ~1850 °C in ~70 seconds. With the addition of 0.1-0.75 wt% PCA, ultrafast sintering enables the formation of a favorable P m1 subcarbide CCC phase, (Nb0.37Mo0.11Ta0.39W0.13)2C. A thermodynamic model is developed to explain the observed Nb and Ta enrichments in (Nb0.37Mo0.11Ta0.39W0.13)2C. An additional rock-salt monocarbide CCC phase forms with more carbon source addition (1 wt% PCA). The well-dispersed and fine-grained CCC precipitates result in grain size refinement and a corresponding increase in hardness. © 2025, The Authors. All rights reserved.

关键词： Grain refinement

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All-polymer solar cells with over 16%efficiency and enhanced stability enabled by compatible solvent and polymer additives

Aggregate

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Aggregate 2022年第3期3卷 5-12页

作者： Ruijie Ma Jianwei Yu Tao Liu Guangye Zhang Yiqun Xiao Zhenghui Luo Gaoda Chai Yuzhong Chen Qunping Fan Wenyan Su Gang Li Ergang Wang Xinhui Lu Feng Gao Bo Tang He Yan Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsEnergy Institute and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionHong Kong University of Science and TechnologyKowloonHong KongChina College of Chemistry Chemical Engineering and Materials ScienceKey Laboratory of Molecular and Nano ProbesMinistry of EducationCollaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of ShandongInstitute of Materials and Clean EnergyShandong Provincial Key Laboratory of Clean Production of Fine ChemicalsShandong Normal UniversityJinanChina Department of Physics Chemistry and Biology(IFM)Linköping UniversityLinköpingSweden College of New Materials and New Energies Shenzhen Technology UniversityShenzhenChina Department of Physics Chinese University of Hong KongNew TerritoriesHong KongChina Department of Chemistry and Chemical Engineering Chalmers University of TechnologyGöteborgSweden Hong Kong University of Science and Technology-Shenzhen Research Institute NanshanShenzhenP.R.China State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSouth China University of Technology(SCUT)GuangzhouP.R.China School of Materials Science and Engineering Zhengzhou UniversityZhengzhouChina Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Siyuan LaboratoryDepartment of PhysicsJinan UniversityGuangzhouChina

Considering the robust and stable nature of the active layers,advancing the power conversion efficiency(PCE)has long been the priority for all-polymer solar cells(all-PSCs).Despite the recent surge of PCE,the photovoltaic parameters of the stateof-the-art all-PSC still lag those of the polymer:small molecule-based *** compete with the counterparts,judicious modulation of the morphology and thus the device electrical properties are *** is difficult to improve all the parameters concurrently for the all-PSCs with advanced efficiency,and one increase is typically accompanied by the drop of the other(s).In this work,with the aids of the solvent additive(1-chloronaphthalene)and the n-type polymer additive(N2200),we can fine-tune the morphology of the active layer and demonstrate a 16.04%efficient all-PSC based on the PM6:PY-IT active *** grazing incidence wideangle X-ray scattering measurements show that the shape of the crystallites can be altered,and the reshaped crystallites lead to enhanced and more balanced charge transport,reduced recombination,and suppressed energy loss,which lead to concurrently improved and device efficiency and stability.

关键词： additive all-polymer solar cell energy loss morphology power conversion efficiency

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Intermolecular coupling enhanced thermopower in single-molecule diketopyrrolopyrrole junctions

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National science Open 2023年第1期2卷 13-23页

作者： Chao Fang Renad Almughathawi Qingqing Wu Wenqiang Cao Hang Chen Songjun Hou Yu Gu Hewei Zhang Yi Zhao Jueting Zheng Guopeng Li Jia Shi Junyang Liu Bing-Wei Mao Zitong Liu Colin J.Lambert Wenjing Hong State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Department of Physics Lancaster UniversityLancaster LA14YBUK State Key Laboratory of Applied Organic Chemistry(SKLAOC) College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China Beijing National Laboratory for Molecular Sciences Beijing 100190China Department of Physics Faculty of ScienceTaibah UniversityMadinahSaudi Arabia

Sorting out organic molecules with high thermopower is essential for understanding molecular *** intermolecular coupling offers a unique chance to enhance the thermopower by tuning the bandgap structure of molecular devices,but the investigation of intermolecular coupling in bulk materials remains ***,we investigated the thermopower of diketopyrrolopyrrole(DPP)cored single-molecule junctions with different coupling strengths by varying the packing density of the self-assembled monolayers(SAM)using a customized scanning tunneling microscope break junction(STM-BJ)*** found that the thermopower of DPP molecules could be enhanced up to one order of magnitude with increasing packing density,suggesting that the thermopower increases with larger neighboring intermolecular *** combined density functional theory(DFT)calculations revealed that the closely-packed configuration brings stronger intermolecular coupling and then reduces the highest occupied molecular orbital(HOMO)-lowest unoccupied molecular orbital(LUMO)gap,leading to an enhanced *** findings offer a new strategy for developing organic thermoelectric devices with high thermopower.

关键词： single-molecule electronics single-molecule junctions thermopower thermoelectric devices intermolecular coupling

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Challenges for and Pathways toward Li-MetalBased All-Solid-State Batteries

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ACS ENERGY LETTERS 2021年第4期6卷 1399-1404页

作者： Albertus, Paul Anandan, Venkataramani Ban, Chunmei Balsara, Nitash Belharouak, Ilias Buettner-Garrett, Josh Chen, Zonghai Daniel, Claus Doeff, Marca Dudney, Nancy J. Dunn, Bruce Harris, Stephen J. Herle, Subramanya Herbert, Eric Kalnaus, Sergiy Libera, Joesph A. Lu, Dongping Martin, Steve McCloskey, Bryan D. McDowell, Matthew T. Meng, Y. Shirley Nanda, Jagjit Sakamoto, Jeff Self, Ethan C. Tepavcevic, Sanja Wachsman, Eric Wang, Chunsheng Westover, Andrew S. Xiao, Jie Yersak, Thomas Department of Chemical and Biomolecular Engineering University of Maryland College Park Maryland 20742 United States Ford Motor Company Dearborn Michigan 48121 United States Mechanical Engineering Department University of Colorado Boulder Colorado 80309 United States Department of Chemical and Biomolecular Engineering and Lawrence Berkeley National Laboratory Materials Sciences Division University of California Berkeley California 94720 United States Energy and Transportation Science Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 United States Solid Power Inc. Louisville Colorado 80027 United States Chemical Sciences and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Argonne Illinois 60439 United States Lawrence Berkeley National Laboratory Energy Storage and Distributed Resources Division University of California Berkeley California 94720 United States Department of Materials Science and Engineering University of California Los Angeles California 90095 United States Applied Materials Inc. 3225 Oakmead Village Drive B12_2F6 Santa Clara California 95054 United States Department of Materials Science and Engineering Michigan Technological University Houghton Michigan 49931 United States Energy and Environmental Directorate Pacific Northwest National Laboratory Richland Washington 99352 United States Department of Materials Science & Engineering Iowa State University of Science & Technology Ames Iowa 50011 United States Woodruff School of Mechanical Engineering and School of Materials Science and Engineering Georgia Institute of Technology Atlanta Georgia 30332 United States Department of NanoEngineering and Materials Science and Engineering Program University of California San Diego La Jolla California 92093 United States Department of Materials Science and Engineering and Department of Mechanical Engineering University of Michigan Ann Arbor Michigan 48109 United States Chemical and Materials Systems Laborat

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Effect of pyrolysis temperature on characteristics of tunable magnetic biochar synthesized from watermelon rind and its tetracycline adsorption performance

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Journal of the Taiwan Institute of chemical Engineers 2024年 160卷

作者： Thairattananon, Phisit Le, Giang T.T. Matsumura, Yukihiko Wu, Kevin C.W. Charinpanitkul, Tawatchai Department of Chemical Engineering Faculty of Engineering Center of Excellence in Particle and Material Processing Technology Chulalongkorn University Bangkok10330 Thailand Institute of Fundamental and Applied Sciences Duy Tan University Ho Chi Minh700000 Viet Nam Faculty of Environmental and Chemical Engineering Duy Tan University Da Nang550000 Viet Nam Mechanical Engineering Program Graduate School of Advanced Science and Engineering Kagamiyama Hiroshima Higashi-Hiroshima739-8527 Japan Department of Chemical Engineering National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Chung-Li Taoyuan Taiwan Research Network of NANOTEC-KU on Nanocatalyst and Nanomaterials for Sustainable Energy and Environment Bangkok10900 Thailand

Background: Tetracycline is an emerging contaminant in water reservoirs, causing undesirable influences on human society. The promising usage of magnetic biochar (MBC) derived from watermelon rind has been explored in the adsorption of various contaminants owing to its high specific surface area and separability;however, the temperature-dependent changes of MBC and its sorption ability toward antibiotics have not been widely examined. Method: Tunable MBCs could be synthesized via simple pyrolysis of watermelon rind impregnated with FeCl3 at different temperatures (700–900 °C). The as-synthesized MBCs were characterized using scanning electron microscopy (SEM), an elemental analyzer, N2 adsorption/desorption, Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffractometry (XRD), and vibrating sample magnetometry (VSM). Then Tetracycline, an emerging contaminant in water reservoirs, was employed as the target contaminant, while adsorption kinetics, isotherm, the effect of pH, and reusability were investigated. Significant findings: The tunability of as-synthesized MBCs could be observed by their distinct changes in structural characteristics when varying pyrolysis temperature. MBC synthesized at 900 °C (MBC900) possessed a high-specific surface area (401 m2.g−1) and saturation magnetization (55.29 emu.g−1), resulting in a greater amount of sorption sites. Tetracycline adsorption by MBCs followed a pseudo-second-order kinetic model and fitted well with the Freundlich model. MBC900 is an excellent adsorbent with a maximum adsorption capacity of 77.6 mg.g−1 and could be used for at least five cycles with an insignificant decrease in the adsorption capacity. © 2024 Taiwan Institute of chemical Engineers

关键词： Adsorption

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Evolution of 14-connected Zr₆ Secondary Building Units through Postsynthetic Linker Incorporation (Jun, 10.1021/acsami.1c07701, 2021)

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ACS APPLIED materials & INTERFACES 2021年第33期13卷 40155-40155页

作者： Hurlock, Matthew J. Hao, Leiduan Kriegsman, Kyle W. Guo, Xiaofeng O'Keeffe, Michael Zhang, Qiang Department of Chemistry Washington State University Pullman Washington 99164 United States Department of Chemistry Materials Science and Engineering Program Washington State University Pullman Washington 99164 United States School of Molecular Sciences Arizona State University Tempe Arizona 85287 United States

Two new zirconium MOFs, WSU-6 and WSU-7, were synthesized through postsynthetic modifications. In both cases, linker insertion was conducted on a MOF consisting of eight-connected (8-c) Zr6 cluster and four-connected (4-c) ETTC linker, WSU-5, which possesses the uncommon 4, 8-c scu-c topology. The insertion of 1, 4-benzenedicarboxylate into the MOF formed the new 4, 12-c mjh topology, WSU-6. Interestingly, when 2, 6-naphthalenedicarboxylate was inserted, WSU-7 can be formed, which possesses a new 4, 14-c jkz topology. WSU-7 contains very rare 14-c Zr6 secondary building units (SBUs) and is the first MOF to have a Zr6 SBUs with connectivity greater than 12. The three Zr-MOFs were structurally characterized, and the photoluminescence properties of the materials were also studied.

关键词： metal−organic frameworks postsynthetic ligand insertion new topology 14-connected Zr6 SBU luminescence

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Acid-catalyzed hydrothermal treatment of sewage sludge: effects of reaction temperature and acid concentration on the production of hydrolysis by-products

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Biomass Conversion and Biorefinery 2023年第9期13卷 7533-7546页

作者： Pham, Van Toi Guan, Chung-Yu Han, Po-Chun Matsagar, Babasaheb M. Wu, Kevin C. W. Ahamad, Tansir Chang, Ching-Yuan Yu, Chang-Ping Graduate Institute of Environmental Engineering National Taiwan University Taipei106 Taiwan Faculty of Environmental Engineering National University of Civil Engineering 55 Giai Phong Hai Ba Trung Hanoi100000 Viet Nam Department of Environmental Engineering National Ilan University Yilan260 Taiwan Ph.D. Program of Green Materials and Precision Devices National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei10617 Taiwan Department of Chemistry College of Science King Saud University P.O. Box 2455 Riyadh11451 Saudi Arabia Water Innovation Low Carbon and Environmental Sustainability Research Center National Taiwan University Taipei106 Taiwan

Sewage sludge (SS) is an organic biomass from wastewater treatment plants, but the use of SS to produce bio-based chemicals under acid-catalyzed hydrolysis (ACH) processes is not well investigated. In this study, ACH processes were performed at 120, 150, and 180 °C using sulfuric acid (H2SO4) with concentrations of 0–0.5 M within a reaction time of 90–180 min to produce bio-based chemicals from SS. The results showed that the reaction temperature, reaction time, and concentrations of H2SO4 affected the yields of sugars, levulinic acid (LA), and 5-hydroxymethylfurfural (HMF). The highest xylose and glucose yields were 7.69 mol% and 5.22 mol% at 120 °C with 0.5 M H2SO4 during the 180 min of reaction time, respectively. Besides, under the ACH process at 180 °C and 180 min, the yield of LA reached a maximum value of 0.48 mol% at 0.5 M H2SO4, and the highest yield of HMF was 1.66 mol% at 0.1 M H2SO4. The data obtained also indicated that the ACH process led to an increase in soluble chemical oxygen demand, dissolved organic carbon, and total dissolved nitrogen. Fluorescence excitation-emission matrix of dissolved organic matter and thermogravimetric analysis of the treated SS further supported the enhanced solubilization of SS after ACH process, especially under higher reaction temperature and concentrations of H2SO4. Although the lower yields of bio-based chemicals might restrict the downstream recovery of the target products, the largely improved SS solubilization by ACH suggests that acid-catalyzed hydrothermal hydrolysis process has potential as an alternative pretreatment method of SS. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

关键词： Sewage sludge

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