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Hydrophilic bi-functional B-doped g-C_(3)N_(4) hierarchical architecture for excellent photocatalytic H_(2)O_(2) production and photoelectrochemical water splitting

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Journal of Energy Chemistry 2022年第7期31卷 236-247,I0007页

作者： Yang Ding Soumyajit Maitra Chunhua Wang Runtian Zheng Meiyu Zhang Tarek Barakat Subhasis Roy Jing Liu Yu Li Tawfique Hasan Bao-Lian Su Laboratory of Inorganic Materials Chemistry(CMI) University of Namur61 rue de BruxellesB-5000 NamurBelgium Namur Institute of Structured Matter(NISM) University of Namur61 rue de BruxellesB-5000 NamurBelgium Department of Chemical Engineering University of Calcutta92 APC RoadWest BengalKolkata 700009India Department of Chemistry KU LeuvenCelestijnenlaan 200FB-3001 LeuvenBelgium State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000GansuChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina Cambridge Graphene Centre University of CambridgeCambridgeCB30DSUK Clare Hall University of CambridgeUnited KingdomCB21EWUK

Graphitic carbon nitride(g-C_(3)N_(4))has attracted great interest in photocatalysis and ***,their poor hydrophilicity poses a great challenge for their applications in aqueous ***,we demonstrate synthesis of a hydrophilic bi-functional hierarchical architecture by the assembly of B-doped g-C_(3)N_(4)*** hierarchical B-doped g-C_(3)N_(4)material enables full utilization of their highly enhanced visible light absorption and photogenerated carrier separation in aqueous medium,leading to an excellent photocatalytic H_(2)O_(2)production rate of 4240.3μM g^(-1)h^(-1),2.84,2.64 and 2.13 times higher than that of the bulk g-C_(3)N_(4),g-C_(3)N_(4)nanoplatelets and bulk B doped g-C_(3)N_(4),*** based on these hierarchical architectures can generate an unprecedented photocurrent density of 1.72 m A cm^(-2)at 1.23 V under AM 1.5 G illumination for photoelectrochemical water *** work makes a fundamental improvement towards large-scale exploitation of highly active,hydrophilic and stable metal-free g-C_(3)N_(4)photocatalysts for various practical applications.

关键词： Boron doping Hydrophilicity Hierarchically assembled architectures Photocatalytic H_(2)O_(2)production Photoelectrocatalytic water splitting

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Elastic properties of Cu-6wt%Ag alloy wires for pulsed magnets investigated by ultrasonic techniques

arXiv

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arXiv 2024年

作者： Li, Ziyu Gu, Tianyi Wei, Wenqi Yuan, Yang Wang, Zhuo Luo, Kangjian Pan, Yupeng Xie, Jianfeng Zhang, Shaozhe Peng, Tao Liu, Lin Chen, Qi Han, Xiaotao Luo, Yongkang Li, Liang Wuhan National High Magnetic Field Center Huazhong University of Science and Technology Wuhan430074 China School of Physics Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan430074 China School of Materials Science and Engineering State Key Lab for Materials Processing and Die & Mold Technology Huazhong University of Science and Technology Wuhan430074 China

Conductor materials with good mechanical performance as well as high electrical- and thermal-conductivities are particularly important to break through the current bottle-neck limit (∼ 100 T) of pulsed magnets. Here we perform systematic studies on the elastic properties of the Cu-6wt%Ag alloy wires, a promising candidate material for the new-generation pulsed magnets, by employing two independent ultrasonic techniques - resonant ultrasound spectroscopy (RUS) and ultrasound pulse-echo experiments. Our RUS measurements manifest that the elastic properties of the Cu-6wt%Ag alloy wires can be improved by an electroplastic drawing procedure as compared with the conventional cold drawing. We also take this chance to test the availab.lity of our newly-built ultrasound pulse-echo facility at Wuhan National High Magnetic Field Center (WHMFC, China), and the results suggest that the elastic performance of the electroplastically-drawn Cu-6wt%Ag alloy wire remains excellent without anomalous softening under extreme conditions, e.g., ultra-high magnetic field up to 50 T, nitrogen / helium cryogenic liquids. © 2024, CC BY.

关键词： Bottles

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Perfecting and extending the near-infrared imaging window

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Light(Science & Applications) 2021年第10期10卷 1949-1966页

作者： Zhe Feng Tao Tang Tianxiang Wu Xiaoming Yu Yuhuang Zhang Meng Wang Junyan Zheng Yanyun Ying Siyi Chen Jing Zhou Xiaoxiao Fan Dan Zhang Shengliang Li Mingxi Zhang Jun Qian State Key Laboratory of Modern Optical Instrumentations Centre for Optical and Electromagnetic ResearchCollege of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang University310058 HangzhouChina Intelligent Optics&Photonics Research Center Jiaxing Institute of Zhejiang University314000 JiaxingZhejiang ProvinceChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology430070 WuhanChina Key Laboratory of Reproductive Genetics(Ministry of Education) Department of Reproductive EndocrinologyWomen’s HospitalZhejiang University School of Medicine310006 HangzhouChina College of Pharmaceutical Sciences Soochow University215123 SuzhouChina

In vivo fluorescence imaging in the second near-infrared window(NIR-II)has been considered as a promising technique for visualizing ***,the definition of the NIR-II region and the mechanism accounting for the excellent performance still need to be ***,we simulate the photon propagation in the NIR region(to 2340 nm),confirm the positive contribution of moderate light absorption by water in intravital imaging and perfect the NIR-II window as 900–1880 nm,where 1400–1500 and 1700–1880 nm are defined as NIR-IIx and NIR-IIc regions,***,2080–2340 nm is newly proposed as the third near-infrared(NIR-III)window,which is believed to provide the best imaging *** wide-field fluorescence microscopy in the brain is performed around the NIRIIx region,with excellent optical sectioning strength and the largest imaging depth of intravital NIR-II fluorescence microscopy to *** also propose 1400 nm long-pass detection in off-peak NIR-II imaging whose performance exceeds that of NIR-IIb imaging,using bright fluorophores with short emission wavelength.

关键词： perfect Perfect fir

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Hybrid Deposition of Altin/Wn Multilayer Films with Low Compressive Stress at Low Temperature

SSRN

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SSRN 2024年

作者： Lin, Liangliang Zhang, Song Wu, Zhengtao Lin, Yisong Zheng, Aiqin Liu, Chao Tu, Rong Wang, Qiming State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan430070 China School of Electromechanical Engineering Guangdong University of Technology Guangzhou510006 China Xiamen Golden Egret Special Alloy Co. Ltd Xiamen361006 China Xiamen Tungsten Co. Ltd Xiamen361004 China

AlTiN/WN multilayer films with low compressive stress were deposited by arc evaporation and DC magnetron sputtering at a low temperature. The phase structure, morphologies, mechanical properties, wear behavior, and cutting performance of the AlTiN/WN multilayer films were evaluated. The results show that all the as-prepared AlTiN/WN multilayer films have fcc structure and exhibit (111) preferred orientation. The lowest value -1.7 GPa for compressive stress was obtained under low-temperature deposition. The film hardness increases as the temperature increases. Increasing the WN layer thickness reduces the adhesion strength of the film. Compared with room temperature, The friction coefficients of the films against Al2O3 and steel reduce at high temperatures. This was attributed to lubricative oxides formed on the wear surface at high temperatures. Dry cutting experiments were conducted and the longest service life of the coated tool reaches ~3700 m. The worn flank surface shows that both adhesion and abrasive wear dominate the failure of the coated tools. © 2024, The Authors. All rights reserved.

关键词： Multilayers

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Zn0.1cd0.9s/Nis Heterojunction Photocatalysts for Enhanced H2 Production and Glucose Conversion

SSRN

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SSRN 2023年

作者： Li, Yu Shen, Yuan-Sheng Bai, Fang-Yuan Wei, Ke Wang, Xin-Ling Chen, Jun Jiang, Ze-Yu Liu, Jing Hu, Zhi-Yi Chen, Li-Hua Su, Bao-Lian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Hubei Wuhan430070 China Wuhan University of Technology 122 Luoshi Road Hubei Wuhan430070 China University of Namur 61 rue de Bruxelles Namur5000 Belgium

The well-designed photocatalyst is a reasonable strategy to improve the photocatalytic performance and realize the photocatalytic H2-production and biomass conversion. In this work, the Zn0.1Cd0.9S/ NiS (SNS) composite was successfully prepared by chemical bath deposition of NiS nanoparticles on Zn0.1Cd0.9S (ZCS) nanorods surface. Our results show that the synergistic effect of NiS and ZCS largely improves the absorption and utilization of light, and the separation of photogenerated carriers because the one-dimensional nanorods is conducive to the transmission of photogenerated carriers. The optimized catalyst (SNS20) has the highest H2-production rate (12.77 mmol·g-1·h-1), which is 6.7 times that of pure ZCS nanorods. The glucose conversion increases from 25.7% to 49.9% and lactic acid selectivity reaches 95%. This work provides a reasonable strategy for designing heterojuction photocatalyst to improve the performance for the synergy of photocatalytic H2-production and biomass conversion. © 2023, The Authors. All rights reserved.

关键词： Nanorods

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Study on Constitutive Model and Fracture Criterion of 7075 Aluminum Alloy at High Temperature

SSRN

引用

SSRN 2023年

作者： Wang, Zijian Zhang, Xiaolei Gui, Jiangtao Geng, Huicheng Xiang, Chongchen Ding, Hanlin School of Iron and Steel Soochow University Suzhou215137 China Yangtze Delta Region Institute of Advanced Materials Suzhou215000 China State Key Lab of Materials Processing and Die and Mould Technology Huazhong University of Science and Technology Wuhan430074 China

Hot stamping has been widely used to solve the problems of spring back and cracking of aluminum alloy after cold forming. However, sheets are prone to failures like wrinkling and cracking during hot forming. Therefore, it is particularly important to establish a correct material model that can accurately reflect the deformation and fracture of the material. In this study, Tensile tests were conducted on the specimens at different temperatures, and Digital Image Correlation (DIC) was employed to obtain the specimen strain. The Yld2000-3d anisotropic yield criterion and the DF2014 fracture criterion were calibrated based on experiments and modeling, which were then used to characterize the anisotropy and fracture behavior of 7075 aluminum alloy, respectively. The specimens were also observed for fracture surface morphology. As the experiments and simulation results revealed, the 7075 aluminum alloy still had a more pronounced anisotropy at high temperatures. Finite element simulation was performed to obtain the parameters of the DF2014 fracture model at different temperatures. The results showed that the DF2014 fracture model could accurately predict the fracture behavior of the aluminum alloy. The specimens exhibited brittle fracture at room temperature, while the behavior changed to typical ductile fracture as the temperature rose. © 2023, The Authors. All rights reserved.

关键词： Anisotropy

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synthesis of Cr_2AlC from Elemental Powders with Modified Pressureless Spark Plasma Sintering

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Journal of Wuhan University of technology(materials Science) 2019年第2期34卷 287-292页

作者：葛梦妮 WANG Xiaofan LI Gaiye LU Chen 张建峰 TU Rong College of Mechanics and Materials Hohai University State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

We introduced a modified pressureless sintering strategy by SPS with a new T-shape die and tapered punches, which helps the evaporation of melted Al and reduces the sample sticking with the inner wall of the die. Thus, the die breaking risk in the sintering process or the de-molding process is avoided at all. At a low temperature and short holding time, a high purity of Cr_2 AlC was obtained in this SPS process from the optimization of different molar ratios of raw materials. Simultaneously, the high porosity of the as-obtained sample was also a distinguishing feature worth noticing. The reaction mechanism for this process was also discussed in detail. This study presented a new venue for future development of high purity "MAX" materials and others related materials by a modified pressureless sintering strategy.

关键词： pressureless spark plasma sintering Cr2AlC reaction mechanism

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Microstructure modification and corrosion resistance enhancement of die-cast Mg-Al-Re alloy by Sr alloying

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Journal of Magnesium and Alloys 2021年第3期9卷 950-963页

作者： Matthew S.Dargusch Zhiming Shi Hanliang Zhu Andrej Atrens Guang-Ling Song The University of Queensland Centre for Advanced Materials Processing and Manufacturing(AMPAM)School of Mechanical and Mining EngineeringBrisbaneQLD 4072Australia Australian Nuclear Science&Technology Organisation Locked Bag 2001Kirrawee DCSydneyNSW 2232Australia The University of Queensland Materials EngineeringSchool of Mechanical and Mining EngineeringBrisbaneQld 4072Australia State Key Lab for Physical Chemistry of Solid State Surfaces Center for Marine Materials Corrosion and ProtectionCollege of MaterialsXiamen UniversityXiamenFujian 361005China

The effects of Sr additions on the microstructure and corrosion performance of a Mg-Al-RE alloy in 3.5 wt.%Na Cl saturated with Mg(OH)_(2) have been *** examination reveals that the Sr addition introduces additional intermetallic phases,refines intermetallic networks and dendritic grains,and improves the network *** Al and rare earth elements can be identified in the intermetallics and grain boundaries or inter-dendrite regions under a transmission electron microscope and secondary electron microscope,*** the Sr-containing intermetallic phases and the refined microstructure,the oxide films become more protective,resulting in more corrosion resistant boundary areas and thus dendrite grain ***,the presence of large amounts of intermetallics and boundaries can enhance the corrosion performance of the Mg-Al-RE alloy containing Sr.

关键词： A.magnesium B.TEM B.SEM C.segregation C.Alkaline corrosion

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The issues on the commercialization of perovskite solar cells

Materials Futures

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materials Futures 2024年第2期3卷 1-35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 School of Information Science and Technology 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 Institute of optoelectronics Fudan UniversityShanghai 200433People’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

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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Sulfur-doped g-C3N4/TiO2 S-scheme heterojunction photocatalyst for Congo Red photodegradation

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Chinese Journal of Catalysis 2021年第1期42卷 56-68页

作者： Juan Wang Guohong Wang Bei Cheng Jiaguo Yu Jiajie Fan Hubei Key Laboratory of Pollutant Analysis and Reuse Technology College of Chemistry and Chemical EngineeringInstitute for Advanced MaterialsHubei Normal UniversityHuangshi 435002HubeiChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina Material Science and Engineering School Zhengzhou UniversityZhengzhou 450001HenanChina

Constructing step-scheme(S-scheme)heterojunctions has been confirmed as a promising strategy for enhancing the photocatalytic activity of composite *** this work,a series of sulfur-doped g-C3N4(SCN)/TiO2 S-scheme photocatalysts were synthesized using electrospinning and calcination *** as-prepared SCN/TiO2 composites showed superior photocatalytic performance than pure TiO2 and SCN in the photocatalytic degradation of Congo Red(CR)aqueous *** significant enhancement in photocatalytic activity benefited not only from the 1D well-distributed nanostructure,but also from the S-scheme ***,the XPS analyses and DFT calculations demonstrated that electrons were transferred from SCN to TiO2 across the interface of the SCN/TiO2 *** built-in electric field,band edge bending,and Coulomb interaction synergistically facilitated the recombination of relatively useless electrons and holes in hybrid when the interface was irradiated by simulated solar ***,the remaining electrons and holes with higher reducibility and oxidizability endowed the composite with supreme redox *** results were adequately verified by radical trapping experiments,ESR tests,and in situ XPS analyses,suggesting that the electron immigration in the photocatalyst followed the S-scheme heterojunction *** work can enrich our knowledge of the design and fabrication of novel S-scheme heterojunction photocatalysts and provide a promising strategy for solving environmental pollution in the future.

关键词： TiO2 nanofiber Sulfur-doped g-C3N4 Step-scheme heterojunction photocatalysis In situ XPS S-scheme mechanism

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