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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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Dual-Aspect Control of Lithium Nucleation and Growth with Hydroxyapatite and Liquid Crystal Polymers for High-Performance Lithium Metal Batteries

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advanced Energy materials 2025年

作者： Miao, Xiang Wu, Zhouhan Hu, Wei Guo, Lin Nan, Ce-Wen School of Chemistry Beijing Advanced Innovation Center for Biomedical Engineering Beihang University Beijing100191 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing100083 China

Lithium (Li) metal is a promising anode material for next-generation high-energy-density batteries. However, safety concerns and the limited lifespan due to Li dendrite formation hinder its practical application. The complex dendrite formation process involves nonuniform nucleation and radial growth, requiring a holistic strategy to simultaneously regulate both processes. In this work, a dual-aspect control strategy is developed by designing a protective layer composed of hydroxyapatite (HA) and a liquid crystal polymer (LCP). Electrochemical, microstructural, and computational analyses revealed that HA provides homogenous Li0 adsorption sites, enhancing Li nucleation kinetics and uniformity. Meanwhile, the LCP self-assembles into cation-selective channels, promoting Li-ion diffusion and regulating growth direction. This dual-aspect control significantly improved Li plating kinetics and mitigated Li dendrite formation. Benefiting from this strategy, the symmetric cell achieved a critical current density of 5 mA cm−2 and maintained a lifespan of 500 h at 3 mA cm−2. Furthermore, in Li–sulfur batteries, the cell exhibited exceptional high-rate cycling performance (>10 mA cm−2) with an average capacity decay rate of only 0.056% over 1000 cycles. These results highlight the effectiveness of dual-aspect control in suppressing Li dendrites and improving high-rate cycling stability. © 2025 Wiley-VCH GmbH.

关键词： Liquid crystals

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Corrosion Behavior of Ti-6al-4v/Aa6061 Dissimilar Metal Cmt Welded Joint

SSRN

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SSRN 2024年

作者： Xu, Hao Cao, Rui Ma, Xianglong Yan, Yingjie Fan, Ding School of Materials Science and Engineering Lanzhou University of Technology Lanzhou730050 China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology Lanzhou730050 China

The corrosion behavior and mechanism of the Ti/Al dissimilar metal CMT welded joint were examined by X-ray photoelectron spectroscopy (XPS), Local Electrochemical impedance spectroscopy (LEIS), and Scanning Kelvin probe force microscopy (SKPFM). The results showed that due to the inhomogeneity of the microstructure, local corrosion caused by the micro-galvanic effect occurs mainly in the form of pitting corrosion on the joint. The Ti/WM interface had relatively high corrosion susceptibility, causing deep corrosion propagation and forming corrosion trenches. It is attributed to the combined effect of the micro-galvanic effect between IMC and α-Al and the macro-galvanic effect between Ti-BM and WM. © 2024, The Authors. All rights reserved.

关键词： Welds

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The Influence of Rare Earth Oxides on the Corrosion Resistance of Nickel-Based Directionally Structured Composite Coatings

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SSRN 2024年

作者： Cao, Tianxiang Yang, Xiaotian Han, Yanbing Jia, Tingting School of Materials Science and Engineering Lanzhou University of Technology Lanzhou730050 China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology Lanzhou730050 China

The directional structure coating of nickel base alloy was prepared with rare earth addition，and the effect of La2O3 on microstructures and corrosion behavior of the directional structure Ni-based coatings were investigated. The results demonstrated that the appropriate amount of La2O3 can significantly enhance the corrosion resistance of Ni60 alloy, which show the tendency of initial rise and then declining with increasing La2O3 content, and the optimal value is about 1wt.%. The rare earth elements can purify impurities in the Ni60 alloy, reduce elemental segregation, and improve the uniformity and density of the passive film, resulting in enhancing the corrosion resistance of the coating. Compared to the coatings without rare earth elements, the corrosion potential and corrosion current density of Ni60/1%La2O3 composite coatings decrease by -57mV and 4.957×10-5A/cm2, respectively. © 2024, The Authors. All rights reserved.

关键词： Corrosion resistance

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Prediction of mechanical properties of hot-rolled steel based on multi-channel convolutional neural network 5

Prediction of mechanical properties of hot-rolled steel base...

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5th International Conference on Internet of Things, Automation and Artificial Intelligence, IoTAAI 2023

作者： Wang, Zhengzhong Wang, Shengdong Zhang, Kai Tang, Xingchang Wang, Yichao Jiugang Group Carbon Steel Sheet Factory Jiayuguan735100 China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology Lanzhou730050 China College of Materials Science and Engineering Lanzhou University of Technology Lanzhou730050 China College of Computer and Communication Lanzhou University of Technology Lanzhou730050 China

ISBN: (纸本)9798400716485

A multi-channel parallel convolutional neural network model is proposed to predict the mechanical properties of hot-rolled steel by chemical content and process parameters. The innovative contribution of this paper is to propose an improved Gramian Angular field method in the field of steel performance prediction, which converts the original data into a two-dimensional image matrix and introduces new features. Compared with the traditional convolutional neural network model, the multi-channel parallel convolutional neural network uses private blocks to decouple data and public blocks to integrate key data, which effectively improves the prediction accuracy of the model. Experiments in this paper show that the optimal hyperparameter structure model proposed in this paper has higher prediction accuracy than similar models proposed in other literatures. © 2023 ACM.

关键词： Convolutional neural networks

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Low Pressure Chemical Vapor Deposited Perovskite Enables all Vacuum-Processed Monolithic Perovskite-Silicon Tandem Solar Cells

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advanced Energy materials 2025年

作者： Zhang, Yuxi Zhu, Yanqing Sun, Jingsong Hu, Min Chen, Jiahui Duan, Bingxin Hu, Shenghan Hou, Peiran Tan, Wen Liang Ku, Zhiliang Yang, Weiguang Lu, Jianfeng State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan430070 China Zhejiang Baima Lake Laboratory Co. Ltd. Zhejiang Hangzhou310000 China School of Electronic and Electrical Engineering Hubei Province Engineering Research Center for Intelligent Micro-Nano Medical Equipment and Key Technologies Wuhan Textile University Wuhan430200 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China ClaytonVIC3168 Australia Solar Technology Co. Ltd. Jiangsu Taizhou225500 China

Low-pressure chemical vapor deposition (CVD) is a promising technique for metal halide perovskite photovoltaics fabrication due to its low manufacturing cost, conformal coverage, and high scalability for industry-scale fabrication. However, the lack of knowledge of the reaction kinetics makes the solar cell performance lag behind its solution-processed counterpart. Herein, the perovskite formation and crystal growth process in the CVD process are studied by unraveling the mechanism of ion diffusion via tracking the vapor–solid reaction with various semi-in-situ characterizations. It is found that Cs+ can migrate along the perovskite lattice and uniformly distribute in the vertical direction of the final perovskite film even changing the deposition order of CsBr and PbI2 in the solid source, whereas this order can significantly affect the growth kinetics and the bandgap of the perovskite. Depositing CsBr before PbI2 results in a faster conversion of inorganic precursors to perovskite phase, yielding a wider bandgap perovskite. Finally, we fabricated semi-transparent perovskite cells using all-vapor deposition process, which showed a champion efficiency of 18.7% and it retained ≈94% of its initial performance after 200 h of continuous operation. Moreover, using this all-vapor deposition process, we achieved a champion efficiency of 26.9% for monolithic perovskite-silicon tandem solar cells. © 2025 Wiley-VCH GmbH.

关键词： Low pressure chemical vapor deposition

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Tris-based protic ionic liquids with multiple adsorption effects enabling excellent anti-wear and anti-corrosion performances

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Journal of Molecular Liquids 2025年 425卷

作者： Ge, Shanqin Chen, Long Li, Wei Cai, Qingzhao Gong, Genxiang Wu, Junhao Yu, Jinhong Nishimura, Kazuhito Jiang, Nan Cai, Tao School of Materials Science and Chemical Engineering Ningbo University Zhejiang Ningbo315211 China State Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China Advanced Nano-processing Engineering Lab Mechanical Engineering Kogakuin University Tokyo192-0015 Japan

Molecular additives have garnered widespread attention in the fields of lubrication and corrosion protection due to their designable interfacial film-forming efficiency. Herein, three protic ionic liquids (PILs) with the same cation but different anions have been designed and synthesized. Their physicochemical properties, tribological properties and anti-corrosion properties were systematically investigated. Results demonstrated that under dynamic steel-on-steel friction conditions, the PILs can maximally reduce the running-in period, friction coefficient, and wear rate by 90 %, 40 %, and 97 %, respectively, compared to the commercial ionic liquid, BMIMPF6. Under static copper corrosion conditions, the PILs efficiently adsorb onto the copper surface and formed a dense oxide layer on its surface, thus achieving excellent corrosion protection for the copper substrates. Molecular dynamics (MD) simulation results indicate that the exceptional lubricity of PILs is due to its ability to rapidly adsorb onto the metal surface through multiple interaction sites on both its anionic and cationic components, thereby reducing the running-in period and swiftly establishing a lubricating film. This study provides insights into the development of molecular additives featuring multiple adsorption sites, with potential applications in the fields of tribology and corrosion engineering. © 2025

关键词： Tribology

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Precipitation and Corrosion Behaviors of Al-Zn-Mg-Cu Alloys with the Coupled Soft/Hard Micro-Areas

SSRN

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SSRN 2024年

作者： Zhi, Jinming Guo, Mingxing Meng, Wen Zhuang, Linzhong State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing100083 China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology Beijing Beijing100083 China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology Beijing Beijing10083 China

A novel thermomechanical processing route was developed to prepare Al-Zn-Mg-Cu alloys containing heterostructures with coupled soft/hard micro-scale areas. The heterostructure gives a significant effect on the subsequent precipitation and intergranular corrosion behaviors of alloys. Importantly, the tensile strengths, elongation and corrosion resistance of grain boundaries of the alloy with an appropriate coupled soft/hard micro-scale area are all greatly improved compared with the alloy with the homogeneous structure. Based on the detailed microstructure characterization, the corresponding strengthening and corrosion resistance mechanisms of alloys with heterostructure have been established in this paper. © 2024, The Authors. All rights reserved.

关键词： Aluminum alloys

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Innovative Bimetallic Sulfide Co-Sn-S@C Nanoflower Amorphous Material for Enhanced Stability and Performance in Sodium-Ion Battery Anodes

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SSRN 2024年

作者： Du, Baiting Meng, Yanshuang Liu, Tingting Zhu, Fuliang School of Materials Science and Engineering Lanzhou University of Technology Lanzhou730050 China State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou730050 China

This research delves into the persistent challenge of instability in metal sulfides utilized as anode materials for sodium-ion batteries (SIBs), presenting an inventive solution to this issue. Employing a meticulous blend of coprecipitation, solvothermal sulfuration, and strategic carbon coating methodologies, we have meticulously crafted a bimetallic sulfide Co-Sn-S@C nanoflower amorphous material that boasts remarkable structural robustness and unparalleled electrochemical prowess. The distinctive amorphous configuration and nanoflower architecture of this innovative material serve dual purposes: they facilitate the efficient transportation of sodium ions through an abundance of pathways, while simultaneously bolstering the material's electrical conductivity and cyclic stability to unprecedented levels. Electrochemical assessments underscore the material's stellar performance, with a specific capacity of 632.7 mAh g-1 achieved after 100 cycles at a current density of 0.2 A g-1, accompanied by a capacity retention rate of 85.1%. Furthermore, it demonstrates robust rate capability, maintaining a capacity of 255.1 mAh g-1 even after 1000 cycles at a higher current density of 4 A g-1. This groundbreaking study not only introduces a fresh perspective into the design paradigm of SIBs anode materials but also establishes a firm cornerstone for the advancement of high-performance energy storage materials, paving the way for future technological breakthroughs in this vital field. © 2024, The Authors. All rights reserved.

关键词： Sodium-ion batteries

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Separation of hexane isomers by introducing“triangular-like and quadrilateral-like channels”in a bcu-type metal-organic framework

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Nano Research 2021年第2期14卷 526-531页

作者： Dongmei Wang X inglong Dong Yu Han Yunling Liu State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Life SciencesInstitute of Physical and ChemistryZhejiang Normal UniversityJinhua 321004China Advanced Membranes and Porous Materials Center Physical Sciences and Engineering DivisionKing Abdullah University of Science and TechnologyThuwal 23955-6900Kingdom of Saudi Arabia

The separation of hexane isomers is of vital importance to produce high quality gasoline in the petrochemical ***,the similar vapor pressure and boiling point of hexane isomers bring great difficulties and challenges in the separation *** effect,which allowing smaller molecules pass through and preventing others,should be a powerful strategy to solve this problem by making good use of porous ***,physical separation by metal-organic framework(MOF)materials appears and becomes a burgeoning separation technique in *** to the weak interaction between hexane isomers with absorbents,it puts forward higher requirements for the accurate design of MOF materials with optimal pore *** address this issue,a novel MOF[Zn_(9)(tba)_(9)(dabco)_(3)]·12DMA-6MeOH(abbreviation:Zn_(9)(tba)_(9)(dabco)_(3);H_(2)tba=4-(1H-tetrazol-5-yl)-benzoic acid;dabco=1,4-diazabicyclo[2.2.2]octane;DMA=N,N-dimethylacetamide)with bcu network has been designed and synthesized by reticular chemistry *** from the pre-designed topology and suitable linear ligand H_(2)tba and dabco,the structure of Zn_(9)(tba)_(9)(dabco)_(3)exhibits two types of channels with triangular-like and quadrilateral-like ***_(9)(tba)_(9)(dabco)_(3)with appropriate channel size and shape displays potential selective adsorption capacity of vapor-phase hexane isomers through sieving ***,outstanding gas adsorptive separation properties of Zn_(9)(tba)_(9)(dabco)_(3)could also be speculated by theoretical ideal adsorbed solution theory(IAST),suggesting Zn_(9)(tba)_(9)(dabco)_(3)can be regarded as a potential adsorbent material for purification natural gas_Breakthrough experiments show that Zn_(9)(tba)_(9)(dabco)_(3)is capable of discriminating all four hexane isomers at 298 K,and the corresponding research octane number(RON)of the eluted mixture closes to 95,which is higher than the standard for industrially refined hexane blends(about 83).We specul

关键词： bcu-type metal-organic framework channel characteristics sieving effect hexane isomers adsorptive separation

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