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A stable graphene nanofluid for creating slippery, corrosion- and biofouling-resistant surfaces

Journal of Physics and Chemistry of Solids 2023年 182卷

作者： Hao Yu Shao-Kun Song Zi-Yan Xu Yang Ge Wei Geng Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in National Laboratory for Marine Science and Technology (Qingdao) Wuhan University of Technology Wuhan 430070 China School of Chemical Engineering and Technology Sun Yat-Sen University 2 Daxue Road Zhuhai 519082 PR China

Marine engineering materials face the challenges of corrosion and biofouling. In this study, a graphene nanofluid has been prepared by dispersing modified graphene in a common lubricant. Porous surfaces on Q235 carbon steel have been generated by applying the highly efficient texturing method—breath figure method and then infused with the graphene nanofluid. The coating thus obtained showed high stability, reduced oil-phase leaching, and a self-healing function. Moreover, the slippery coating exhibited a more than five orders of magnitude superior anti-corrosion performance and improved anti-biofouling properties. The developed graphene nanofluid coating has great potential for applications involving the protection of surfaces exposed to the marine environment.

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Oxalamide-Functionalized Metal Organic Frameworks for CO₂Adsorption

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ACS Applied materials and Interfaces 2021年第28期13卷 33188-33198页

作者： Güçlü, Yunus Erer, Hakan Demiral, Hakan Altintas, Cigdem Keskin, Seda Tumanov, Nikolay Su, Bao-Lian Semerci, Fatih Department of Energy Systems Engineering Faculty of Technology Klrklareli University Klrklareli 39000 Turkey Department of Chemistry Faculty of Science and Letters Eskişehir Osmangazi University Eskişehir 26040 Turkey Department of Chemical Engineering Faculty of Engineering and Architecture Eskişehir Osmangazi University Eskişehir 26040 Turkey Department of Chemical and Biological Engineering Koç University Rumelifeneri Yolu Istanbul Sarlyer 34450 Turkey Chemistry Department University of Namur Rue de Bruxelles 61 Namur 5000 Belgium Laboratory of Inorganic Materials Chemistry (CMI) University of Namur 61 Rue de Bruxelles Namur 5000 Belgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Hubei Wuhan 430070 China

Metal-organic frameworks (MOFs) have received great attention in recent years as potential adsorbents for CO2 capture due to their unique properties. However, the high cost and their tedious synthesis procedures impede their industrial application. A series of new CO2-philic oxalamide-functionalized MOFs have been solvothermally synthesized: {[Zn3(μ8-OATA)1.5(H2O)2(DMF)]·5/2H2O·5DMF}n (Zn-OATA), {[NH2(CH3)2][Cd(μ4-HOATA)]·H2O·DMF}n (Cd-OATA), and {[Co2(μ7-OATA)(H2O)(DMF)2]·2H2O·3DMF}n (Co-OATA) (H4OATA = N,N′-bis(3,5-dicarboxyphenyl)oxalamide). In Zn-OATA, the [Zn2(CO2)4] SBUs are connected by OATA4- ligands into a 3D framework with 4-connected NbO topology. In Cd-OATA, two anionic frameworks with a dia topology interpenetrated each other to form a porous structure. In Co-OATA, [Co2(CO2)4] units are linked by four OATA4- to form a 3D framework with binodal 4,4-connected 42·84 PtS-type topology. Very interestingly, Cu-OATA can be prepared from Zn-OATA by a facile metal ions exchange procedure without damaging the structure while the CO2 adsorption ability can be largely enhanced when Zn(II) metal ions are exchanged to Cu(II). These new MOFs possess channels decorated by the CO2-philic oxalamide groups and accessible open metal sites, suitable for highly selective CO2 adsorption. Cu-OATA exhibits a significant CO2 adsorption capacity of 25.35 wt % (138.85 cm3/g) at 273 K and 9.84 wt % (50.08 cm3/g) at 298 K under 1 bar with isosteric heat of adsorption (Qst) of about 25 kJ/mol. Cu-OATA presents a very high selectivity of 5.5 for CO2/CH4 and 43.8 for CO2/N2 separation at 0.1 bar, 298 K. Cd-OATA exhibits a CO2 sorption isotherm with hysteresis that can be originated from structural rearrangements. Cd-OATA adsorbs CO2 up to 11.90 wt % (60.58 cm3/g) at 273 K and 2.26 wt % (11.40 cm3/g) at 298 K under 1 bar. Moreover, these new MOFs exhibit high stability in various organic solvents, water, and acidic or basic media. The present work opens a new opportunity in the developm

关键词： CO2adsorption gas separation metal organic frameworks oxalamide-functionalization water stability

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Fabrication of physically multi-crosslinked sodium alginate/carboxylated-chitosan/attapulgite-base aerogel modified by polyethyleneimine for the efficient adsorption of organic dye and Cu(II) contaminants

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International Journal of Biological Macromolecules 2025年 312卷 144188页

作者： Zhang, Zongrui Sun, Jianjun Wei, Xianglong Bai, Guona Zhang, Wencai Xiang, Yixin Li, Mengqun Gao, Jiangang Wang, Xinyu School of Chemical and Environmental Engineering Anhui Polytechnic University Wuhu241000 China Far East Cable CO. Ltd. Yixing214257 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan430070 China

The simultaneous presence of heavy metal ions and organic dyes presents significant challenges for the wastewater treatment sector. In response to this pressing issue, a novel composite aerogel has been developed: polyethyleneimine-modified sodium alginate/carboxylated chitosan/attapulgite aerogels (ATP/CCS/SA-PEI), which effectively facilitates the concurrent removal of copper ions (Cu(II)), Congo red (CR), and methylene blue (MB) from aqueous solutions. Under optimal adsorption conditions, ATP/CCS/SA-PEI exhibits superior adsorption capacities for Cu(II), MB, and CR when compared to the unmodified raw materials at equivalent dosages, achieving maximum capacities of 228.24 mg/g for Cu(II), 206 mg/g for MB, and 290.13 mg/g for CR. Additionally, the presence of coexisting ions exerts a minor adverse effect on adsorption efficiency, indicating that the synthesized ATP/CCS/SA-PEI aerogels possess commendable environmental adaptability. Characterization techniques reveal that the primary mechanisms underlying adsorption involve electrostatic interactions, hydrogen bonding, coordination complex formation, and ion exchange synergies. Simultaneously, the ATP/CCS/SA-PEI aerogel exhibits significant reusability, retaining removal efficiencies of 53 % for MB and 48 % for Cu(II) after four sorption-desorption cycles. Consequently, the synthesized ATP/CCS/SA-PEI aerogel demonstrates considerable potential for the remediation of complex pollutants in wastewater, indicating its applicability across diverse industrial sectors. © 2025 Elsevier B.V.

关键词： Crosslinking

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synthesis and Photovoltaic Properties of A Dithieno[6,5-b：10,11-b＇]-8H-Cyclopentyl[1,2-b：4,3-b＇]Diphenanthrene based Donor-Acceptor Alternating Copolymer

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Journal of Wuhan University of technology(materials Science) 2018年第2期33卷 288-295页

作者：杨明焱 xia fei zhan chun 肖生强 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

A novel fused nonacyclic monomer of dithieno[6,5-b：10,11-b＇]-8 H-cyclopentyl[1,2-b：4,3-b＇]diphenanthrene（DTCPDP） was synthesized by combining the structural features of ladder-type and multiple fused multi-cyclic aromatics. DTCPDP has a single sp3-hybridized carbon bridge between fused multi-cyclic aromatics. The copolymerization of DTCPDT with the electron accepting unit of 4,7-di（thiophen-2-yl）benzo[c][1,2,5]thiadiazole（DTBT） via Stille coupling afforded a novel donor-acceptor（D-A） alternating copolymer PDTCPDT-DTBT. The copolymer exhibited good chemical and thermal stabilities, with an optical band gap of 1.82 eV and a low-lying highest occupied molecular orbital（HOMO） energy level of-5.32 eV. When the copolymer was incorporated into polymer： fullerene（PC_（71）BM） blends to fabricate bulk heterojunction polymer solar cell devices, the devices exhibited a moderate maximum power conversion efficiency（PCE） of 5.90%.

关键词： polymer solar cells bulk heterojunction ladder-type conjugated polymers

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Surfactant-assisted doctor-blading-printed FAPbBr3 films for efficient semitransparent perovskite solar cells

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Frontiers of Optoelectronics 2020年第3期13卷 272-281页

作者： Hangkai YING Yifan LIU Yuxi DOU Jibo ZHANG Zhenli WU Qi ZHANG Yi-Bing CHENG Jie ZHONG State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China School of Aerospace Transport and ManufacturingCranfield UniversityCranfieldBedfordshireMK430ALUK Department of Materials Science and Engineering Monash UniversityVIC 3800Australia

Organic-inorganic hybrid perovskite solar cells have generated wide interest due to the rapid development of their photovoltaic conversion ***,the majority of the reported devices have been fabricated via spin coating with a device areaof<1 *** this study,we fabricated a wide-bandgap formamidi-nium lead bromide(FAPbBr3)film using a cost-effective,high-yielding doctor-blade-coating *** effects of different surfactants,such as I-α-phosphatidylcholine,polyoxyethylene sorbitan monooleate,sodium lauryl sulfonate,and hexadecyl trimethyl ammonium bromide,were studied during the printing *** the optimization of the blading temperature,crystal sizes of over 10μm and large-area perovskite films of5cm×5 cm were obtained using this *** printed FAPbBr3 solar cells exhibited a short-circuit current density of 8.22 mA/cm2,an open-circuit voltage of 1.175 V,and an efficiency of 7.29%.Subsequently,we replaced the gold with silver nanowires as the top electrode to prepare a semitransparent perovskite solar cell with an average transmittance(400-800 nm)of 25.42%,achieving a high-power efficiency of 5.11%.This study demonstrates efficient doctor-blading printing for preparing large-area FAPbBr3 films that possess high potential for applications in building integrated photovoltaics.

关键词： semitransparent printing perovskite solar cell(PSC) doctor blading wide bandgap

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Effects of interface adhesive and resin cohesive strength on tensile strength of resin sand based on numerical analysis

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China Foundry 2019年第6期16卷 406-413页

作者： Yun-dong Ji Zi-han Liu Kai-dong Zheng Jia-bo Li Hai-xiao Hu Dong-feng Cao School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Zhangwu Country Lian Xin Foundry Silica Sand Co. Ltd.Fuxin 123200China

A plane-strain unit-cell finite element model was proposed to study the effects of resin/sand interface adhesive and resin cohesive strength on the overall tensile strength of resin sand,as well as the fracture *** main micro-scale characteristics of the numerical model were extracted from the micrograph of resin sand specimens by three-dimensional X-ray microscopy(3 D-XRM).The extended finite element method(XFEM)and cohesive behavior method were employed to explicitly describe the resin fracture and sand/resin interface debonding,*** corresponding experimental observation of micro-scale failure behavior based on the scanning electron microscopy(SEM)was presented for a *** numerical results show that the initial failure of the model occurs at the sand/resin interface,followed by consequent resin *** on the resin cohesive strength,the location of resin failure varies from the central zones to resin neck arc zones.A typical mixed mode fracture is observed,which is consistent with the corresponding micro-scale experimental *** the resin cohesive strength ranges between 8 and 12 MPa,the resin cracks occur at the central zone of resin bridges and propagate perpendicularly to the tensile direction until through cracks *** a higher range(between 12 and 16 MPa),interface cracks cross with resin cracks,bonding bridges of resin sand are *** interface adhesive strength has a more significant effect on the overall tensile strength of resin sand than the resin cohesive *** overall tensile strength of resin sand increases first then keeps stable with the increase of the resin cohesive *** work attempts to establish a numerical model which accurately describes the complicated mixed mode fracture of resin sand,which is beneficial to understand deeply the fracture mechanism of resin sand.

关键词： resin sand microstructure interface debonding resin crack fracture mode

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Atomic Occupation and Role of Cr Atoms in Cr-Doped Ni43co7mn39sn11 Magnetic Shape Memory Alloys

SSRN

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SSRN 2022年

作者： Wang, Songwang Yang, Ruoou Lu, Guangduo Yi, Lizhi Liu, Min Xu, Yunli Pan, Liqing Hubei Engineering Research Center of Weak Magnetic-field Detection College of Science China Three Gorges University Yichang443002 China State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China Shanghai Synchrotron Radiation Facility Zhangjiang National Lab Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai201204 China

The atomic occupation, magnetic properties and the relationship between them of Ni43Co7Mn39-xCrxSn11( x =0, 0.4, 0.6, 0.8, 1.0, 1.2 at.%) alloys have been systematically investigated. To elucidate the occupancy of Cr atoms, extended X-ray absorption fine structure (EXAFS) is performed and Cr K-edge EXAFS analysis determines that Cr atoms occupy Y site of the Ni43Co7Mn38Cr1Sn11 sample. Ferromagnetic resonance shows the evolution of the microscopic magnetic properties of the magnetic atoms with the increase of Cr doping content, which further confirms the Y-site occupation of Cr atoms. The experimental results show that in the Ni43Co7Mn39Sn11 system, Cr doping replaces Mn at the Y site, breaking the symmetry of the crystal field of Mn atoms at the Z site, reducing the atomic displacement potential. The doping of Cr atoms significantly enhances the driving force of its magnetic field-induced martensitic transformation. © 2022, The Authors. All rights reserved.

关键词： Cobalt alloys

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Concurrent strength-ductility enhancement of as-cast Al 0.5 Mo 0.5 NbTa 0.5 TiZr refractory high entropy alloys via Cr alloying and the underlying mechanism

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Journal of Alloys and Compounds 2025年 1036卷

作者： Zijian Geng Jian Peng Wenjun Lu Zhigang Xu Qiang Shen Chuanbin Wang Lianmeng Zhang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 PR China Department of Mechanical and Energy Engineering Southern University of Science and Technology Shenzhen 518055 PR China Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory Chaozhou 521000 PR China Hubei Technology Innovation Center for Advanced Composites Wuhan University of Technology Wuhan 430070 PR China

Refractory high entropy alloys (RHEAs) possess superior mechanical properties at both room temperature and high temperature, yet their strength-ductility trade-off remains challenging. In this study, we successfully achieve a concurrent strength-ductility enhancement of the room temperature compressive strength and ductility in Al 0.5 Mo 0.5 NbTa 0.5 TiZr RHEA via Cr addition A systematic investigation of the influence of Cr content on the phase, microstructure, and mechanical properties of Al 0.5 Mo 0.5 NbTa 0.5 TiZrCr x (in molar ratio, x = 0, 0.1, 0.2, 0.5, 1, 1.25, and 1.5) was performed and the underlying strengthening mechanism was clarified. Al 0.5 Mo 0.5 NbTa 0.5 TiZrCr 0.2 maintains a disordered BCC_A2 phase and an ordered BCC_B2 matrix phase crystal structure as the reference alloy Al 0.5 Mo 0.5 NbTa 0.5 TiZr. Its compressive yield strength and fracture strain reach 1585 ± 205.38 MPa and 14.10 ± 3.18 %, respectively, 50 % and 234 % higher than the reference alloy. Increased dislocation density and the combined effect of solid solution hardening and Hall-Petch strengthening are believed to be responsible for this enhancement. Moreover, further Cr addition results in the formation of the Laves phase, besides BCC. The compressive yield strength and fracture strain of Al 0.5 Mo 0.5 NbTa 0.5 TiZrCr 1 RHEAs reach 1746 ± 102.90 MPa and 7.06 ± 0.28 %, respectively, which is 65 % and 63 % higher than the reference alloy.

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Atomic Occupation and Role of Cr Atoms in Cr-Doped Ni 43Co 7Mn 39Sn 11 Magnetic Shape Memory Alloys

SSRN

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SSRN 2022年

The crystal structure, atomic occupation, martensitic transformation and dynamic magnetic properties of Ni43Co7Mn39-xCrxSn11(x=0, 0.4, 0.6, 0.8, 1.0, 1.2 at.%) alloys have been systematically investigated. To elucidate the occupancy of Cr atoms, extended X-ray absorption fine structure (EXAFS) was performed on the Ni43Co7Mn38Cr1Sn11 sample. Cr K-edge EXAFS analysis confirmed that Cr atoms occupy Y site. Magnetic measurements showed that with the increase of Cr content, the martensitic transformation temperature increases slightly from 336 K to 339 K at first, and then rapidly decreases to 246 K, while the saturation magnetization decreases slightly. Ferromagnetic resonance results revealed that with the doping of Cr, the orbital angular momentum of the Mn atoms at Z site is partially activated, resulting in the effective Landé g factor of the alloy increasing from 2.05 to 2.19. Meanwhile the magnetic moments of Mn atoms at Z site increase, resulting in a decrease in the saturation magnetization of the alloy. The results indicated that in the 43Co7Mn39Sn11 system, Cr doping replaces Mn at Y site, breaks the symmetry of the crystal field of the Mn atoms at Z site, enlarges its magnetic moment, and effectively regulates the martensitic transformation temperature of the alloy as well. The most important effect is that Cr doping can significantly enhance the magnetic driving force and greatly promote the magnetic field-induced martensitic transformation. © 2022, The Authors. All rights reserved.

关键词： Ferromagnetism

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The issues on the commercialization of perovskite solar cells

材料展望（英文）

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材料展望（英文） 2024年第2期3卷 118-152页

作者： Lixiu Zhang Yousheng Wang Xiangchuan Meng Jia Zhang Pengfei Wu Min Wang Fengren Cao Chunhao Chen Zhaokui Wang Fu Yang Xiaodong Li Yu Zou Xi Jin Yan Jiang Hengyue Li Yucheng Liu Tongle Bu Buyi Yan Yaowen Li Junfeng Fang Lixin Xiao Junliang Yang Fuzhi Huang Shengzhong Liu Jizhong Yao Liangsheng Liao Liang Li Fei Zhang Yiqiang Zhan Yiwang Chen Yaohua Mai Liming Ding Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People's Republic of China Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632People's Republic of China Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031People's Republic of China Institute of optoelectronics Fudan UniversityShanghai 200433People's Republic of China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072People's Republic of China School of Physical Science and Technology Soochow UniversitySuzhou 215006People's Republic of China Institute of Functional Nano & Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People's Republic of China College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123People's Republic of China School of Physics and Electronic Science East China Normal UniversityShanghai 200241People's Republic of China State Key Laboratory for Artificial Microstructure and Mesoscopic Physics Department of PhysicsPeking UniversityBeijing 100871People's Republic of China College of Biophotonics South China Normal UniversityGuangzhou 510631People's Republic of China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People's Republic of China School of Physics and Electronics Central South UniversityChangsha 410083People's Republic of China School of Materials Science and Engineering Shaanxi Normal UniversityXi'an 710119People's Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People's Republic of China Microquanta semiconductor Hangzhou 311121People's Republic of China School of Information Science and Technology Fudan UniversityShanghai 200433People's Republic of China

Perovskite solar cells have aroused a worldwide research upsurge in recent years due to their soaring photovoltaic performance,ease of solution processing,and low *** power conversion efficiency record is constantly being broken and has recently reached 26.1％in the lab,which is comparable to the established photovoltaic technologies such as crystalline silicon,copper indium gallium selenide and cadmium telluride(CdTe)solar ***,perovskite solar cells are standing at the entrance of industrialization,where huge opportunities and risks ***,towards commercialization,challenges of up-scaling,stability and lead toxicity still remain,the proper handling of which could potentially lead to the widespread adoption of perovskite solar cells as a low-cost and efficient source of renewable *** review gives a holistic analysis of the path towards commercialization for perovskite solar cells.A comprehensive overview of the current state-of-the-art level for perovskite solar cells and modules will be introduced first,with respect to the module efficiency,stability and current status of *** will then discuss the challenges that get in the way of commercialization and the corresponding strategies to address them,involving the upscaling,the stability and the lead toxicity *** into the future direction of commercialization of perovskite photovoltaics was also provided,including the flexible perovskite cells and modules and perovskite indoor ***,the future perspectives towards commercialization are put forward.

关键词： commercializations perovskite solar cells state-of-the-art level challenges and perspectives indoor photovoltaics

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