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Smart Polymers with Special Wettability

Small (Weinheim an der Bergstrasse, Germany) 2017年第4期13卷 2017 Jan;13(4)页

作者： Baisong Chang Bei Zhang Taolei Sun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China. School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan 430070 P.R. China.

Surface wettability plays a key role in addressing issues ranging from basic life activities to our daily life, and thus being able to control it is an attractive goal. Learning from nature, both of its structure and function, brings us much inspiration in designing smart polymers to tackle this major challenge. Life functions particularly depend on biomolecular recognition-induced interfacial properties from the aqueous phase onto either "soft" cell and tissue or "hard" inorganic bone and tooth surfaces. The driving force is noncovalent weak interactions rather than strong covalent combinations. An overview is provided of the weak interactions that perform vital actions in mediating biological processes, which serve as a basis for elab.rating multi-component polymers with special wettabilities. The role of smart polymers from molecular recognitions to macroscopic properties are highlighted. The rationale is that highly selective weak interactions are capable of creating a dynamic synergetic communication in the building components of polymers. Biomolecules could selectively induce conformational transitions of polymer chains, and then drive a switching of physicochemical properties, e.g., roughness, stiffness and compositions, which are an integrated embodiment of macroscopic surface wettabilities.

关键词： chirality dynamic biointerfaces molecular recognition smart polymers superwettability

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Structure and electrochemical properties for the MoxV3−xO7/MWNTs nanocomposites

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IOP Conference Series: materials Science and Engineering 2011年第8期18卷

作者： Quanyao Zhu Siping Hu Wei Jin Hao Wen Wen Chen Galina Zakharova State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Material Science and Engineering Wuhan University of Technology Wuhan 430070 People's Republic of China Institute of Solid State Chemistry of the Ural Branch Russian Academy of Science Pervomaiskaya 91 Yekaterinburg 620990 Russia

The MoxV3−xO7/MWNTs nanocomposites were fabricated via a hydrothermal reaction followed by self-assembling process. The nanocomposites were characterized in terms of surface morphology and structure by FESEM, TEM, XRD and XPS analysis, respectively. The electrochemical behaviors of the nanocomposites were investigated by galvanostatic charge-discharge test and cyclic voltammetry. The results showed that MoxV3−xO7/MWNTs nanocomposites had great cycleability as well as capacity characteristics, which was 277.4 mAh/g in the first discharge process and remained 207.9 mAh/g after fiftieth discharge cycle. In the rapid charge-discharge test, the capacity rate still remained 88.6 % after twentieth cycles at 1.2 C discharge.

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Universal precursor of superconductivity in the cuprates

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Physical Review B 2019年第21期99卷 214502-214502页

作者： G. Yu D.-D. Xia D. Pelc R.-H. He N.-H. Kaneko T. Sasagawa Y. Li X. Zhao N. Barišić A. Shekhter M. Greven School of Physics and Astronomy University of Minnesota Minneapolis Minnesota 55455 USA State Key Lab of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 China Department of Physics Faculty of Science University of Zagreb Bijenička cesta 32 HR-10000 Zagreb Croatia Westlake Institute for Advanced Study Hangzhou 310024 Zhejiang China National Institute of Advanced Industrial Science and Technology (AIST) 1-1-1 Umezono Tsukuba Ibaraki 305-8563 Japan MSL Tokyo Institute of Technology Kanagawa 226-8503 Japan International Center for Quantum Materials School of Physics Peking University Beijing 100871 China Institute of Solid State Physics TU Wien 1040 Vienna Austria Pulsed Field Facility National High Magnetic Field Laboratory Los Alamos National Laboratory Los Alamos New Mexico 87545 USA

Using torque magnetometry, we reveal remarkably simple universal behavior of the superconducting (SC) precursor in the cuprates by tracking the nonlinear diamagnetism above Tc in four distinct compounds: single-CuO2-layer HgBa2CuO4+δ, La2−xSrxCuO4 and Bi2(Sr,La)2CuO6+δ, and double-layer Bi2Sr2Ca0.95Y0.05Cu2O8+δ. We find that SC diamagnetism vanishes in an exponential manner, characterized by a universal temperature scale that is approximately independent of compound and Tc. We discuss the possibility that this unusual behavior signifies the proliferation of SC clusters as a result of intrinsic inhomogeneity inherent to the cuprates.

关键词： Impurities in superconductors Magnetic susceptibility Phase diagrams Pseudogap Superconducting fluctuations Superconducting phase transition Cuprates High-temperature superconductors

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Semiconductors: Light‐Steered Isotropic Semiconductor Micromotors (Adv. Mater. 3/2017)

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advanced materials 2017年第3期29卷

作者： Chuanrui Chen Fangzhi Mou Leilei Xu Shaofei Wang Jianguo Guan Zunpeng Feng Quanwei Wang Lei Kong Wei Li Joseph Wang Qingjie Zhang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology 122 Luoshi road Wuhan 430070 P. R. China Department of Nanoengineering University of California San Diego La Jolla CA 92093 USA

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Alloying effect enhanced bimetallic Ni-Fe/TiO 2 catalysts for selective hydrogenation of 1,3-butadiene in the presence of an excess of propylene

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Molecular Catalysis 2023年 550卷

作者： Wei-Hao Wang Bo Jiang Zhao Wang Ya Chen Yao Li Ting-Ting Luo Feng Cheng Bao-Lian Su The State Key Laboratory of Advanced Technology for Material Synthesis and processing Wuhan University of Technology Wuhan 430070 China Center for Materials Research and Analysis Wuhan University of Technology Wuhan 430070 China Laboratory of Inorganic Materials Chemistry (CMI) University of Namur 61 Rue de Bruxelles B-5000 Namur Belgium

Nickel is a promising Pd alternative candidate for selective alkynes/alkadienes hydrogenation owing to its high catalytic activity and cheap price, however, with fatal restrictions of low alkenes selectivity and inferior stability caused by its strong olefin adsorption and the cleavage of carbon-carbon bond. Herein, controlled amounts of iron were introduced into nickel as catalytic assistant by deposition-precipitation with urea on TiO 2 support. Using 1,3-butadiene in an excess of propylene to simulate the industrial process, the additional Fe shows a significant enhancement to the catalytic performance of Ni, i.e., Ni-Fe/TiO 2 with Ni/Fe atomic ratio 1:0.33 shows >94% of 1,3-butadiene conversion and >95% of alkenes selectivity after above 200 h of time on stream, superior to that of commercial Pd/Al 2 O 3 catalyst. Further in-situ analysis reveals that the alloying effect from the formation of Ni-rich Ni-Fe intermetallic compound (e.g., Ni 3 Fe alloy) enlarges the distance between two Ni active sites and enriches the electronic density of Ni sites, resulting in a weak adsorption of butenes products for offering such excellent catalytic performance. To the best of our knowledge, this is the first in-depth exploration on supported Ni-Fe bimetallic catalyst for selective hydrogenation of light alkynes/alkadienes. It shows a high potential for replacing the commercial Pd-based catalysts.

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Effect of storage and ball milling on the sedimentation and rheology of a novel magnetorheological fluid

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Journal of Physics: Conference Series 2009年第1期149卷

作者： H B Cheng P Hou Q J Zhang N M Wereley State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Luoshi Road 122 Wuhan 430070 P.R.China Department of Aerospace Engineering University of Maryland 3180 Martin Hall College Park MD 20742 USA

In this study, the sedimentation stability and rheology of a new magnetorheological fluid formulation were experimentally investigated before and after being stored for 24 months, as well as after being milled. The results reveal that, after undergoing 24 months of steady storage, the off-state viscosity and field-induced yield stress of the MR fluid remained constant, and that its flowability and redispersibility were maintained. After being subjected to ball milling for 2 hours at 200 rpm and 300 rpm, the field-induced yield stress was also maintained.

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Ammonium Ion Batteries: Material, Electrochemistry and Strategy

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Angewandte Chemie 2023年第23期135卷

作者： Runtian Zheng Yuhang Li Dr. Haoxiang Yu Xikun Zhang Dr. Ding Yang Dr. Lei Yan Prof. Yu Li Prof. Jie Shu Prof. Bao-Lian Su School of Materials Science and Chemical Engineering Ningbo University Ningbo 315211 Zhejiang China Laboratory of Inorganic Materials Chemistry (CMI) University of Namur 61 rue de Bruxelles 5000 Namur Belgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 Hubei China

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TiO 2 nanofluid infused nanocoating for long-term anti-corrosion

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Chemical Physics Letters 2023年 830卷

作者： Zi-Yan Xu Jing-jing Xie Hao Yu Yang Ge Wei Geng Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology Wuhan 430070 PR China School of Chemical Engineering and Technology Sun Yat-Sen University 2 Daxue Road Zhuhai 519082 PR China

Marine corrosion has been a global problem with the damage on environment, and economy. With the development, traditional coating technology is difficult to meet the current demands of applications. In this study, TiO 2 nanoparticles were modified and dispersed in silicone oil to form TiO 2 nanofluid. And, the nanofluid was infused into hierarchical structure to produce the SLIPS which is obtained by spraying with the solution of Al 2 O 3 , which significantly reduce the lubricant leaching. As synthesized coating shows the good performance in corrosion resistance. The coating prepared by this novel method show the great potential applications in different marine environments.

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Non-invasive flexible sensor based on liquid metal for human physiological detection

Next Nanotechnology

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Next Nanotechnology 2024年 5卷

作者： Zixuan Guo Gengcheng Liao Long Ren Hui Qiao Zongyu Huang Ziyu Wang Xiang Qi Hunan Key Laboratory for Micro-Nano Energy Materials and Devices and School of Physics and Optoelectronic Xiangtan University Hunan 411105 PR China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Hubei 430000 PR China Suzhou Institute of Wuhan University Suzhou 215125 PR China

Flexible sensors play an important role in simulation, brain-computer interaction, intelligent robots, and biological detection. Due to the progress of modern medical means, the construction of wearable flexible sensors to realize remote and continuous monitoring of human physical indicators and physiological parameters has become a hot research topic. Non-invasive sensor is a device that can detect physiological parameters without cutting the skin or puncturing the body. They have wide application prospects in the fields of medical treatment, fitness, and daily care due to the following advantages: real-time monitoring, portability, accuracy, and cost reduction. Liquid metal has become a great candidate for constructing flexible biosensors because of its high conductivity, deformability, self-healing, and bio-friendly properties, its spontaneous formation of an oxide film due to exposure to oxygen provides a convenient reaction platform for the preparation of other materials. Two-dimensional materials are inherently superior in preparing sensors due to their great advantages unique chemical and physical properties, their high surface area-to-volume ratios and ultra-high surface sensitivity to the environment also can be used to prepare flexible sensor. This study presents an overview and introduction of biosensors fabricated by liquid metal and two-dimensional materials, including how to prepare specific two-dimensional materials based on liquid metal, and the stripping method is also included. Three kinds of applications are discussed in detail, including the detection of human glucose concentration, pulse detection, and sweat analysis, whose sensing principles depend on piezoelectric, optical, and electrochemical. At the end of the article, we summarized the current challenges faced by biosensors based on liquid metal and looked forward to its future development and future directions of advances.

关键词： Liquid metal Two-dimensional materials Non-invasive Flexible sensor Sensing principles

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Hollow Iron–Vanadium Composite Spheres: A Highly Efficient Iron‐Based Water Oxidation Electrocatalyst without the Need for Nickel or Cobalt

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Angewandte Chemie 2017年第12期129卷

作者： Ke Fan Yongfei Ji Haiyuan Zou Jinfeng Zhang Bicheng Zhu Hong Chen Quentin Daniel Yi Luo Jiaguo Yu Licheng Sun Department of Chemistry KTH Royal Institute of Technology 10044 Stockholm Sweden State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 430070 Wuhan China School of Biotechnology KTH Royal Institute of Technology 10691 Stockholm Sweden State Key Lab of Fine Chemicals DUT-KTH Joint Education and Research Center on Molecular Devices Dalian University of Technology 116024 Dalian China

Noble‐metal‐free bimetal‐based electrocatalysts have shown high efficiency for water oxidation. Ni and/or Co in these electrocatalysts are essential to provide a conductive, high‐surface area and a chemically stable host. However, the necessity of Ni or Co limits the scope of low‐cost electrocatalysts. Herein, we report a hierarchical hollow FeV composite, which is Ni‐ and Co‐free and highly efficient for electrocatalytic water oxidation with low overpotential 390 mV (10 mA cm −2 catalytic current density), low Tafel slope of 36.7 mV dec −1 , and a considerable durability. This work provides a novel and efficient catalyst, and greatly expands the scope of low‐cost Fe‐based electrocatalysts for water splitting without need of Ni or Co.

关键词： Eisenkomposite Elektrokatalysatoren Überpotential Vanadium Wasseroxidation

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