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Research progress of carbon-based particle electrodes in three-dimensional electrode reactors for wastewater treatment

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新型炭材料(中英文) 2024年

作者： LU Hua-yu LIU Wei-feng QIN Lei LIU Xu-guang Institute of New Carbon Materials College of Materials Science and Engineering Taiyuan University of Technology Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology) Ministry of Education Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering

Three-dimensional(3D) electrode technology is a competitive water treatment technology owing to its high catalytic efficiency, low energy consumption, and promising development. The introduction of a third electrode on the basis of a 2D electrode system forms a 3D electrode system, and the introduced third electrode is also known as the particle electrode. Particle electrodes in3D electrode system are generally in the form of particles or crumbs that be filled in between the cathode and anode. The core of the3D electrode system is the particle electrode, so the selection of particle electrode materials is the focus of the research of 3D electrode technology. Carbon-based materials are widely used as particle electrodes in 3D electrode technology because of their advantages of large specific surface area, good adsorption performance, high chemical stability, and low price. In this review, the research progress of carbon-based materials as particle electrodes for degrading organic pollutants in recent years is collected, the principle of3D electrode technology is introduced, along with the classification of particle electrodes and the current research status of carbonbased particle electrodes, and the challenges and future development of carbon-based particle electrodes in wastewater treatment are summarized.

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Regularly Tuning Quantum Interference in Single-Molecule Junctions through Systematic Substitution of Side Groups with Varied Electron Effects

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Chinese Journal of Chemistry 2024年第11期42卷 1217-1222页

作者： Xianjing Xie Yirong Zhang Junrui Zhang Xingyuan Cui Wei Liu Xunshan Liu Key Laboratory of Surface&Interface Science of Polymer Materials of Zhejiang Province School of Chemistry and Chemical EngineeringZhejiang Sci-Tech University928 Second StreetHangzhouZhejiang310018 China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunJilin130022 China School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjingJiangsu210094 China

Investigating the quantum interference effect in single molecules is essential to comprehensively understand the underlying mechanism of single-molecule charge *** this study,we employed the mother molecule m-OPE and introduced a series of side groups with various electronic effects at the 2-position of the central phenyl ring,creating four daughter m-OPE *** single molecular conductivities of these molecule wires were measured using the scanning tunneling microscope breaking junction *** findings demonstrate that the substitutions regularly modulate the destructive quantum interference occurring within the m-OPE *** combining optical and electrochemical investigations,along with density functional theory computations,we discover that the conductivity of the molecules corresponds to the electron-donating/withdrawing ability of the ***,by adjusting the electron structures of the molecular backbone,we can systematically tailor the destructive quantum interference in the m-OPE molecules.

关键词： Quantum interference Single-molecule junctions Electron effect substituents Charge transport Molecular devices

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Relationship Between the Long-Term Practice of Tai Chi Stance with Neural Patterns of the Brain: An Exploratory Study

Relationship Between the Long-Term Practice of Tai Chi Stanc...

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2024 China Automation Congress, CAC 2024

作者： Li, Mengmeng Zhang, Jianbo Wan, Hong School of Electrical and Information Engineering Henan Key Laboratory of Brain Science and Brain-Computer Interface Technology Zhengzhou University Zhengzhou China

ISBN: (纸本)9798350368604

Research has shown that practicing Tai Chi can alleviate brain tension and enhance the activity of the autonomic nervous system in the human body. However, there is limited research on the effects of Tai Chi Stance on brain function. This study aims to analyze the electroencephalogram (EEG) characteristics of long-term Tai Chi Zhuang practitioners and investigate the changes in brain dynamic neural patterns during different stages of Tai Chi Stance, together with the differences between long-term practitioners and a control group. In this study, we first analyzed the changes in EEG spectral characteristics during different stages of Tai Chi Stance practice of long-term practitioners. We found that the alpha (8-13 Hz) power significantly increased during the stance, indicating a state of deep relaxation during the Tai Chi practice. The experimental group also exhibited significant changes in brain functional network parameters in the alpha band during the stance, including increased clustering coefficient and global efficiency. Finally, inter-group differences in EEG characteristic parameters were analyzed between the experimental group and control group. The results showed significant differences in relative power and functional connectivity in the alpha band between the two groups, indicating that long-term Tai Chi Stance practice can effectively enhance brain network efficiency and improve information integration capabilities. This study provides scientific evidence for Tai Chi Stance training to enhance brain health. © 2024 IEEE.

关键词： Electroencephalography

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Interfacial Banded Transcrystallization of Polyoxymethylene/Poly(butylene succinate) Blends Induced by the Polyamide 6 Fiber

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Chinese Journal of Polymer science 2022年第4期40卷 394-402页

作者： Zi-Li Zheng Wen-Jing Sun Xi-Xi Zhang Zhou-Yun-Tong Liu Wen-Bin Wang Meng-Han Bai Hao-Ran Yang Gan-Ji Zhong Jia-Zhuang Xu Zhong-Ming Li College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China State Laboratory of Surface and Interface Science and Technology School of Material and Chemical EngineeringZhengzhou University of Light IndustryZhengzhou 450002China

Interfacial crystallization of polyoxymethylene/poly(butylene succinate)blends induced by the polyamide 6(PA6)fiber was *** to strong heterogeneous nucleating ability,dense nuclei were generated on the surface of the PA6 fiber,which compelled the growth of twisted lamellae perpendicular to the PA6 *** a result,unique interfacial banded transcrystallization was formed,which is rarely found *** temperature was dominant in determining the nucleation activity of the PA6 fiber,further affecting the architecture of banded *** the increase of crystallization temperature,the nucleation density decreased to give more growth space for the twisted lamellae around the *** wave-like banded stripes were transformed into fan-like ***,band spacing and eccentricity respectively showed positive and negative correlation with crystallization *** meaningful results shed light on regulating the architecture of banded crystals in polymer composites.

关键词： Interfacial crystallization Banded transcrystallization Heterogeneous fiber Nuclei density Polymer blends

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Unique Duplex Microstructure and Porosity Effect on Mechanical Properties of AlCoCrFeNi_(2.1) Eutectic High-Entropy Alloys Processed by Selective Laser Melting

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Acta Metallurgica Sinica(English Letters) 2023年第9期36卷 1465-1481页

作者： Liwei Lan Wenxian Wang Zeqin Cui Xiaohu Hao College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan030024China Key Laboratory of Interface Science and Engineering in Advanced Materials Taiyuan University of TechnologyMinistry of EducationTaiyuan030024China Shanxi–Zhejiang University New Materials and Chemical Research Institute Taiyuan030032China

Selective laser melting(SLM)was performed on AlCoCrFeNi_(2.1) eutectic high-entropy alloys(EHEAs),and the unique duplex microstructure and porosity were investigated as well as the negative effect on mechanical *** printed AlCoCrFeNi_(2.1) EHEAs is composed of face-centered cubic and BCC/B2 phases,and the surface texture of samples perpendicular to and parallel to the building direction is *** the bottom of the molten pool to the inside,the structure changes from dendrites to columnar crystals and then to cellular crystals,the distribution of elements in and around the molten pool is uniform,and there is no element *** surface hardness of as-printed AlCoCrFeNi_(2.1) EHEAs is higher than that of as-cast ones due to the grain refinement strengthening,and there is anisotropy in different surface hardness,the highest hardness is 580 HV(X–Y plane)and 560 HV(X–Z plane).The reduction of bearing area and tip stress concentration caused by pores have adverse effects on the tensile strength and elongation of the alloy,the ultimate tensile strength increased from 1060 to 1289 MPa.

关键词： Selective laser melting Eutectic high-entropy alloys Metallurgical porosity Microstructure evolution Grains and interfaces

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A novel strategy for promoting corrosion and wear resistance of Mg-Li alloys: Gradient eutectic high-entropy alloy coating induced by in-situ bidirectional diffusion

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Journal of Magnesium and Alloys 2025年第5期13卷 2267-2282页

作者： Wen, Xin Cui, Xiufang Liu, Yufei Zhang, Ye Tian, Haoliang Wan, Simin Jiang, Lipeng Jin, Guo Institute of Surface/Interface Science and Technology Key Laboratory of Superlight Material and Surface Technology of Ministry of Education College of Material Science and Chemical Engineering Harbin Engineering University 145 Nantong Ave Nangang District Heilongjiang Harbin150001 China Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material Beijing Aero Engine Corporation of China Beijing Institute of Aeronautical Materials Beijing100095 China

In this work, a novel surface strengthening strategy for Mg-Li alloys was proposed, called cold spraying assisted high-speed laser cladding. CuAl9 aluminum bronze coating was firstly deposited on Mg-Li alloy by cold spraying, and then CoCrFe0.5Ni1.5Mo0.1Nb0.68 eutectic high-entropy alloy (EHEA) coating was prepared on the CuAl9 coating utilizing high-speed laser cladding. A gradient coating consisted of in-situ transition region and EHEA layer formed by bidirectional diffusion. The in-situ transition region was composed of β-Li, Cu2Mg and Cu3Al2 phases. TEM analysis indicated that Cu2Mg and Cu3Al2 phases were well matched with the β-Li matrix phase. The EHEA coating had a nano-lamellar eutectic microstructure with relatively small lamellar-spacing (SHE) was 1345 mVSHE higher than that of Mg-Li alloy (-1369 mVSHE), while the corrosion current density of the EHEA coating (3.13 × 10−7 A·cm−2) was almost three orders of magnitude lower than that of Mg-Li alloy (1.25 × 10−4 A·cm−2). The wear rate of Mg-Li alloy (1.11 × 10−3 mm3/N·m) was about 36 times higher than that of the EHEA coating (3.05 × 10−5 mm3/N·m). © 2023

关键词： Binary alloys

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Machine Learning-Aided Data Analysis in Single-Protein Conductance Measurement with Electron Tunneling Probes

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Chinese Journal of Chemistry 2024年第1期42卷 67-72页

作者： Yuxin Yang Tao Jiang Ye Tian Biaofeng Zeng Longhua Tang State Key Laboratoryof Extreme Photonics and Instrumentation College of Optical Science and EngineeringZhejiang University HangzhouZhejiang 310027China Nanhu Brain-computer Interface Institute HangzhouZhejiang 311100China State Key Laboratory of Fluid Power and Mechatronic Systems College of Mechanical EngineeringZhejiang University HangzhouZhejiang 310027China

The electrical tunneling sensors have excellent potential in the next generation of single-molecule measurement and sequencing technologies due to their high sensitivity and spatial resolution *** tunneling signals that have been measured at a high sampling rate may provide detailed molecular *** the extraordinarily large amount of data that has been gathered,it is still difficult to correlate signal transformations with molecular processes,which creates great obstacles for signal *** learning is an effective tool for data analysis that is currently gaining more *** has demonstrated promising results when used to analyze data from single-molecule electrical *** order to extract meaningful information from raw measurement data,we have combined intelligent machine learning with tunneling electrical *** the purpose of analyzing tunneling electrical signals,we investigated the clustering approach,which is a classic algorithm in machine learning.A clustering model was built that combines the advantages of hierarchical clustering and Gaussian mixture model ***,customized statistical algorithms were *** has been proven to efficiently gather molecular information and enhance the effectiveness of data analysis.

关键词： Tunneling sensor Single-molecule measurement Machine learning Single-protein conductance Molecular electrochemistry Nanotechnology Molecular electronics

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Gradient-crosslinked hydrogel microdome pattern for multilevel chromatic encryption

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science China Chemistry 2023年第12期66卷 3567-3575页

作者： Jing Xue Yu Wang Tailong Zhang Kaixuan Li Florian Vogelbacher Yu Zhang Xiaoyu Hou Zixin Zhu Yang Tian Yanlin Song Mingzhu Li Key Laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesBeijing 100190China Key Laboratory of Bionic Materials and Interface Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Beijing Key Laboratory for Optical Materials and Photonic Devices Department of ChemistryCapital Normal UniversityBeijing 100048China

In the realm of modern cryptography and anti-counterfeiting,innovative approaches are crucial to encode sensitive information *** responsive structural colors have garnered significant interest due to their feature-rich spectra and high sensitivity to external ***,high costs and complex processing involved in integrating the various delicate microstructures have impeded their widespread *** this study,we present a straightforward multilevel chromatic encryption scheme utilizing direct-writing gradient-crosslinked *** solvent-responsive structural color of each microdome,arising from the synergistic effect of total internal reflections and interference,is adjusted independently across the entire visible *** microdome functions as a signal recording unit,enabling multilevel color variations through a solventdependent development *** approach facilitates the encoding of enhanced information into a single *** demonstrate the efficacy of our method for advanced applications,we have prepared a collection of solvent-dependent multilevel codes for algorithm cryptography,showcasing its potential for high-level anti-counterfeiting and high-density optical data storage.

关键词： oxygen inhibition structural color direct writing encryption storage capacity

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Tree Ring‑Inspired Fibrous Helix for UV Shielding and Warning Based on Photo‑electricity‑Acoustic Energy Conversion

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Advanced Fiber Materials 2023年第2期5卷 681-693页

作者： Yan Wang Ziyi Guo Jie Xiong Jingchong Liu Yong Zhao Fengyun Guo Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province School of Textile Science and Engineering(International Silk Institute)Zhejiang Sci-Tech UniversityHangzhou 310018China Key Laboratory of Bioinspired Intelligent Interface Science and Technology Ministry of Education School of Chemistry Beihang UniversityBeijing 100191China Beijing Key Laboratory for Bioengineering and Sensing Technology Daxing Research InstituteSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China

Flexible wearable ultraviolet(UV)shielding,monitoring and warning devices have important applications in civil and mili-tary ***,most flexible wearable UV devices show unsatisfactory performance due to their poor stability and easy failure at large ***,inspired by tree rings,we engineered a hierarchical composite nanofibrous helix with an alternately stacked Archimedes spiral structure via a cost-effective *** on a photo-electricity-acoustic energy conversion system,we fabricated an all-in-one device exhibiting strain-insensitive UV protection at 0–500%strain for UV shielding as well as strain-sensitive UV monitoring at 500–1500%strain for UV early *** with previously reported common nanofibrous membrane devices,the as-prepared composite nanofibrous helix shows great advantages in terms of stability and UV protection,especially at large ***,the helix demonstrates multiple functions of wear resistance,antibacterial properties,biodegradation and *** versatile strategy holds great promise for wearable electronics and multifunctional devices.

关键词： Electrospinning Nanofibrous helix Energy conversion UV shielding and warning Multifunction Flexible electronics

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Preparation and properties of chitosan-VC loaded nano-silver-doped natural latex

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Progress in Natural science:Materials International 2022年第5期32卷 625-633页

作者： Liangzhi Jia Liqiao Wei Yanhong Zhang Hua Wang Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education College of Materials Science and Engineering Taiyuan University of Technology China Development Strategy Institute for Building Materials Industry College of Textile Engineering Taiyuan University of Technology

As one kind of the modern medical devices, various catheters are commonly used in interventional therapy, but they are prone to infection in the human body, which is a defect in clinical treatment. At present, the commonly used catheters are mostly treated with antibacterial coatings on the rubber catheters. However, there are some problems for their application, such as, easy peeling of the coating and poor durability of antibacterial *** order to solve the above problems, a kind of nano-silver antibacterial agent reduced and stabilized by Vitamin C modified chitosan was prepared, and then added into natural latex to produce an antibacterial latex with antibacterial properties from the inside to the outside. The chemical properties, mechanical properties and antibacterial properties of the samples were characterized, and the antibacterial mechanism of VC modified chitosan/nano silver was analyzed. The results showed that the antibacterial rates of the latex samples against E. coli and S. aureus reached 97.38% and 98.45%.

关键词： Chitosan Nano silver Antibacterial Natural latex

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