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Influence of V/P Ratio on the Catalytic Performance of VPO/SiO_2 Catalysts for Ammoxidation of Chloro-Substituted Toluenes

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Wuhan University Journal of Natural Sciences 2019年第1期24卷 23-29页

作者： DONG Yanling XU Longlong ZHANG Zhenguo LIU Wenhui LI Xiongjian ZHONG Yalan HUANG Chi State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Tianhua Chemical Branch Xi'an Sunward Aeromat Co.Ltd. Sanjiang Chemical Factory of CSSG College of Chemistry and Molecular Sciences Wuhan University

A series of vanadium phosphate oxide(VPO) catalysts supported on silica(VPO/Si O2) with various mole ratios of V/P(nV:nP=1:0.8-1:3) were prepared through impregnation method. The catalytic activity was evaluated by ammoxidation reactions of several kinds of chloro-substituted toluenes(CT) in a fixed-bed reactor. The catalyst presented the best performance when nV:nP is 1:1.6. The prepared catalysts were characterized by N2 adsorption, hydrogen temperature programmed reduction(TPR) and ammonia temperature programmed desorption(TPD) and etc. The results reveal that P can decrease the bonding energy of V=O and increase the mobility of lattice oxygen which was beneficial for the improvement of the catalysts, while too much P can greatly decrease the average oxidation number of V which leads to deactivation of the catalysts. The surface acidity of the VPO/Si O2 catalysts is affected by nV:nP and the catalyst had the highest surface acidity when nV:nP is 1:1.6. The selectivity of catalysts is proportional to the surface acidity when nV:nP is lower than 1:3.0.

关键词： ammoxidation VPO/SiO2 catalyst substituted toluenes substituted benzonitriles

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Donor-Acceptor Molecule with Tict Character: A New Design Strategy for Organic Photothermal Material in Solar Energy

SSRN

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SSRN 2023年

作者： Wang, Chenguang Dai, Jianan Zhao, Meng Qi, Shuo Liu, Jing Jia, Tao Liu, Fangmeng Sun, Peng Li, Bo Zhou, Ji Lu, Geyu State Key Laboratory of Integrated Optoelectronics Key Laboratory of Advanced Gas Sensors of Jilin Province College of Electronic Science & Engineering Jilin University Changchun130012 China Key Laboratory of Forest Plant Ecology Ministry of Education Engineering Research Center of Forest Bio-Preparation College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin150040 China Hebei Key Laboratory of Hazardous Chemicals Safety and Control Technology School of Chemical Safety North China Institute of Science and Technology Langfang065201 China State Kay Lab of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China International Center of Future Science Jilin University Changchun130012 China

Organic photothermal materials, particular the donor-acceptor (D-A) type ones, have attracted increased attention because they could efficiently transform solar energy to heat in an environmentally friendly manner. So far, there are many strategies to improve the fluorescence of D-A type molecules, while how to quench the fluorescence via non-radiative decay process and thus maximize the solar-thermal conversion efficiency is rarely investigated. Herein, a new design strategy is proposed to overcome this bottleneck, that is, formatting a unique twisted intramolecular charge-transfer (TICT) excitation state for the D-A type molecule. To demonstrate this new design strategy, three D-A molecules TPA-BTO, TPA-BTO-Py+ and GTPA-BTO-Py+ are synthesized with the consideration of employing stronger donor/acceptor moieties. The photophysical measurements and theoretical calculations reveal that these molecules display strong tendency to form TICT state, and the stronger donor/acceptor would significantly promote the TICT-based non-radiative decay process. Consequently, the target molecule GTPA-BTO-Py+ is totally non-fluorescent and could efficiently transform the absorbed solar energy to heat. Further combined with the wide absorption up to 1300 nm, GTPA-BTO-Py+ solid displays a high solar-thermal conversion efficiency of 20.5%. Finally, the utility of GTPA-BTO-Py+ as highly efficient photothermal material in solar energy is highlighted by water evaporation and thermoelectric generation. © 2023, The Authors. All rights reserved.

关键词： Molecules

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Enhanced performance of solid-state Li–O_2 battery using a novel integrated architecture of gel polymer electrolyte and nanoarray cathode

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Rare Metals 2018年第6期37卷 527-535页

作者： Liang Xiao Er-Wei Li Jing-Yu Yi Wen Meng Bo-Hua Deng Jin-Ping Liu School of Chemistry Chemical Engineering and Life Sciences Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

The present work proposes a novel strategy to fabricate an integrated architecture of gel polymer electrolyte （GPE）-nanoarray cathode for lithium-O2 batteries （LOBs）. As a proof-of-concept experiment, the photo-initiated in situ polymerization of GPE was carried out via incorporating the precursor solution in advance into a self- standing binder-free oxygen electrode of Co3O4 nanosheets array grown on carbon cloth （Co3O4@CC）, forming an integrated GPE-Co3O4@CC architecture. The performance of the solid-state LOBs using the GPE-Co3O4@CC assembly is greatly enhanced compared to the counterparts with a traditional cell structure, in which GPE was sandwiched by a lithium metal and a cathode. The enhanced performance is ascribed to the combination of the in situ polymerization of GPE and the versatile structure of nanoarray electrode, which results in abundant interfacial contacts between GPE and electrode. This work presents an alternative way to develop high-performance solid-state LOBs by combining the advantages of both gel polymer electrolytes and nanoarray electrodes.

关键词： Solid-state Li-O2 battery Gel polymer electrolyte Co3O4 nanosheet Nanoarray electrode Electrolyte-cathode interface

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Room-temperature large photoinduced magnetoresistance in semi-insulating gallium arsenide-based device

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Chinese Physics B 2018年第6期27卷 394-399页

作者： Xiong He Zhi-Gang Sun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

It is still a great challenge for semiconductor based-devices to obtain a large magnetoresistance（MR） effect under a low magnetic field at room temperature. In this paper, the photoinduced MR effects under different intensities of illumination at room temperature are investigated in a semi-insulating gallium arsenide（SI-Ga As）-based Ag/SI–Ga As/Ag device. The device is subjected to the irradiation of light which is supplied by light-emitting diode（LED） lamp beads with a wavelength in a range of about 395 nm–405 nm and the working power of each LED lamp bead is about 33 mW. The photoinduced MR shows no saturation under magnetic fields（B） up to 1 T and the MR sensitivity S（S = MR/B） at low magnetic field（B = 0.001 T） can reach 15 T^（-1）. It is found that the recombination of photoinduced electron and hole results in a positive photoinduced MR effect. This work implies that a high photoinduced S under a low magnetic field may be obtained in a non-magnetic semiconductor device with a very low intrinsic carrier concentration.

关键词： GaAs magnetoresistance carrier recombination

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Determination of TyG index in the whole blood using mid-infrared fiber evanescent wave spectroscopic sensor

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Sensors and Actuators B: Chemical 2025年 442卷

作者： Yongkun Zhao Yinsheng Xu Zhifei Yang Yantao Xu Haitao Guo Zheng Zhao Tianxiang You Mengling Xia Minghong Yang Xianghua Zhang State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Transient Optics and Photonics Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences (CAS) Xi'an 710119 China National Engineering Laboratory for Fiber Optic Sensing Technology Wuhan University of Technology Wuhan 430070 China Institut des Sciences Chimiques de Rennes - UMR CNRS 6226 Université de Rennes Rennes 35042 France

The triglyceride-glucose (TyG) index has emerged as a reliable surrogate marker for assessing insulin resistance, emphasizing the need for a rapid and precise technique to quantify blood glucose and triglyceride levels. In this study, we have developed a mid-infrared fiber evanescent wave spectroscopic (MIR-FEWS) sensor, tapered from Ge 10 As 20 Ga 5 Se 65 infrared fiber, for the simultaneous analysis of both triglyceride and glucose. This innovative sensor achieves a low limit of detection (LoD) of 1.18 mM for glucose and 0.23 mM for triglycerides, respectively, showcasing its possibility for blood test. Moreover, the sensor exhibits excellent repeatability and stability, validating its applicability for determining the TyG index in whole blood. When applied to measure the TyG index in Sprague-Dawley (SD) rats, the results closely align with those from commercial blood glucose and lipid meters, underscoring its accuracy. The proposed MIR-FEWS sensor has multiple advantages, including multi-component analysis capabilities, high sensitivity, straightforward operation, lab.l-free measurement, and cost-effectiveness, thereby presenting a novel and promising technique for rapid and reliable TyG index detection.

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Microstructure and composition characterization of teeth from different species 42

Microstructure and composition characterization of teeth fro...

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42nd International Conference on advanced Ceramics and Composites, ICACC 2018

作者： Han, Jun Zeng, Hui Ping, Hang Jia, Wei Xie, Jingjing Chi, Wenhao Xiea, Hao Fu, Zhengyi State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology WuhanPR430070 China WuHan institute of Marine Electric Propulsion WuhanPR430064 China

ISBN: (纸本)9781119543305

Biological materials are well worth learning for our own synthetic materials. It’s of great interest that the growth rate of teeth is different in species. The growth rate of human teeth is slow, but faster for rat and shark. The microstructure and composition difference may have a great effect on the growth rate. In this study, the microstructure and composition from human teeth, rat teeth and shark teeth were well characterized by scanning electron microscopy and X-ray diffraction. It is demonstrated that the size of individual apatite crystal and the growth direction of apatites in those enamel or enameloid display different types. The diameter of shark enameloid is the biggest. Three growth directions can be observed in shark enameloid but only two in human and rat. The main inorganic composition of the three teeth is also different. It is hydroxyapatite (HAP) for human and rat teeth, while fluorapatite (FAP) for shade. The XRD patterns also indicate that the assemble degree of human teeth is the most sophisticated. The results may give useful insight into new materials synthesis technology. © 2019, American Ceramic Society. All rights reserved.

关键词： Rats

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Ammonium Ion Batteries: Material, Electrochemistry and Strategy

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Angewandte Chemie (International ed. in English) 2023年第23期62卷 e202301629页

作者： Runtian Zheng Yuhang Li Haoxiang Yu Xikun Zhang Ding Yang Lei Yan Yu Li Jie Shu 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.

Ammonium-ion batteries (AIBs) have recently attracted increasing attention in the field of aqueous batteries owing to their high safety and fast diffusion kinetics. The NH storage mechanism is quite different from that of spherical metal ions (e.g. Li , Na , K , Mg , and Zn ) because of the formation of hydrogen bonds between NH and host materials. Although many materials have been proposed as electrode materials for AIBs, their performances hardly meet the requirement of future electrochemical energy storage devices. It is thus urgent to design and exploit advanced materials for AIBs. This review highlights the state-of-the-art research on AIBs. The insights into the basic configuration, operating mechanism and recent progress of electrode materials and corresponding electrolytes for AIBs have been comprehensively outlined. The electrode materials are classified and compared according to different NH storage behaviour in the structure. The challenges, design strategies and perspectives are also discussed for the future development of AIBs.

关键词： Ammonium-Ion Batteries Aqueous Electrolytes Electrode materials Hydrogen Bond Operating Mechanisms

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Quadrupling the stored charge by extending the accessible density of states

arXiv

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arXiv 2021年

作者： Yan, Mengyu Wang, Peiyao Pan, Xuelei Wei, Qiulong Liu, Jefferson Z. Zhao, Yunlong Zhao, Kangning Dunn, Bruce Liu, Jun Yang, Jihui Mai, Liqiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Department of Materials Science and Engineering University of Washington SeattleWA98105 United States Department of Mechanical Engineering University of Melbourne VIC3010 Australia Department of Chemistry and Biochemistry University of California Los AngelesCA90095 United States Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu hydrogen Valley Foshan528200 China

Nanosized energy storage, energy-harvesting, and functional devices are the three key components for integrated self-power systems. Here, we report on nanoscale electrochemical devices with a nearly three-fold enhanced stored charge under the field effect. We demonstrated the field-effect transistor can not only work as a functional component in nanodevices but also serve as an amplifier for the nanosized energy storage blocks. This unusual increase in energy storage is attributed to having a wide range of accessible electronic density of states (EDOS), hence redox reactions are occurring within the nanowire and not being confined to the surface. Initial results with MoS2 suggest that this field effect modulated energy storage mechanism may also apply to many other redox-active materials. Our work demonstrates the novel application of the field-effect in energy storage devices as a universal strategy to improve ion diffusion and the surface-active ion concentration of the active material, which can greatly enhance the charge storage ability of nanoscale devices. The fabrication process of the field-effect energy storage device is also compatible with microtechnology and can be integrated into other microdevices and nanodevices. Copyright © 2021, The Authors. All rights reserved.

关键词： Electrochemistry

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Directly grown nanostructured electrodes for high-power and high-stability alkaline nickel/bismuth batteries

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Science China materials 2019年第4期62卷 487-496页

作者： Deliang Ba Yuanyuan Li Yunfei Sun Zaiping Guo Jinping Liu School of Optical and Electronic Information Huazhong University of Science and Technology Engineering Materials Institute School of Mechanical Materials & Mechatronics Engineering University of Wollongong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Bismuth oxide(Bi2O3) has received great attention as an anode material for alkaline nickel/bismuth(Ni/Bi) batteries due to its high theoretical capacity and easy preparation. However, the generally poor conductivity of metal oxides and the instability of Bi2O3 during cycling severely limit the device performance. Herein, we present the use of directly grown Bi2O3 nanoflake film with kinetic advantages as the anode for Ni/Bi batteries. Particularly, glucose-derived carbon is integrated onto the surfaces of nanoflakes, which not only enhances the electron transfer but also buffers the conversion-reaction induced volume expansion of Bi2O3, helping maintaining the cycling stability of the film. The resulting Bi2O3@C electrode exhibits high specific capacity, excellent rate performance(can be charged within 6.7 s), and good cycle stability(~1,200 times;fading rate of only 0.011% per cycle).When assembled with a nickel oxide(NiO) nanosheet array cathode in basic electrolyte, a fully binder-free Ni/Bi battery is obtained, which delivers maximum energy and power densities of 34.29 W h kg-1 and 12,159.8 W kg-1, respectively, and good cycling performance. The power density is even much superior to that of many hybrid/asymmetric *** work suggests a new generation of thin-film Ni/Bi batteries for potential high-power electronic applications.

关键词： Bi2O3 binder-free high power high stability alkaline rechargeable battery

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technology Roadmap for Flexible Sensors

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ACS NANO 2023年第6期17卷 5211-5295页

作者： Luo, Yifei Abidian, Mohammad Reza Ahn, Jong-Hyun Akinwande, Deji Andrews, Anne M. Antonietti, Markus Bao, Zhenan Berggren, Magnus Berkey, Christopher A. Bettinger, Christopher John Chen, Jun Chen, Peng Cheng, Wenlong Cheng, Xu Choi, Seon-Jin Chortos, Alex Dagdeviren, Canan Dauskardt, Reinhold H. Di, Chong-an Dickey, Michael D. Duan, Xiangfeng Facchetti, Antonio Fan, Zhiyong Fang, Yin Feng, Jianyou Feng, Xue Gao, Huajian Gao, Wei Gong, Xiwen Guo, Chuan Fei Guo, Xiaojun Hartel, Martin C. He, Zihan Ho, John S. Hu, Youfan Huang, Qiyao Huang, Yu Huo, Fengwei Hussain, Muhammad M. Javey, Ali Jeong, Unyong Jiang, Chen Jiang, Xingyu Kang, Jiheong Karnaushenko, Daniil Khademhosseini, Ali Kim, Dae-Hyeong Kim, Il-Doo Kireev, Dmitry Kong, Lingxuan Lee, Chengkuo Lee, Nae-Eung Lee, Pooi See Lee, Tae-Woo Li, Fengyu Li, Jinxing Liang, Cuiyuan Lim, Chwee Teck Lin, Yuanjing Lipomi, Darren J. Liu, Jia Liu, Kai Liu, Nan Liu, Ren Liu, Yuxin Liu, Yuxuan Liu, Zhiyuan Liu, Zhuangjian Loh, Xian Jun Lu, Nanshu Lv, Zhisheng Magdassi, Shlomo Malliaras, George G. Matsuhisa, Naoji Nathan, Arokia Niu, Simiao Pan, Jieming Pang, Changhyun Pei, Qibing Peng, Huisheng Qi, Dianpeng Ren, Huaying Rogers, John A. Rowe, Aaron Schmidt, Oliver G. Sekitani, Tsuyoshi Seo, Dae-Gyo Shen, Guozhen Sheng, Xing Shi, Qiongfeng Someya, Takao Song, Yanlin Stavrinidou, Eleni Su, Meng Sun, Xuemei Takei, Kuniharu Tao, Xiao-Ming Tee, Benjamin C. K. Thean, Aaron Voon-Yew Trung, Tran Quang Wan, Changjin Wang, Huiliang Wang, Joseph Wang, Ming Wang, Sihong Wang, Ting Wang, Zhong Lin Weiss, Paul S. Wen, Hanqi Xu, Sheng Xu, Tailin Yan, Hongping Yan, Xuzhou Yang, Hui Yang, Le Yang, Shuaijian Yin, Lan Yu, Cunjiang Yu, Guihua Yu, Jing Yu, Shu-Hong Yu, Xinge Zamburg, Evgeny Zhang, Haixia Zhang, Xiangyu Zhang, Xiaosheng Zhang, Xueji Zhang, Yihui Zhang, Yu Zhao, Siyuan Zhao, Xuanhe Zheng, Yuanjin Zheng, Yu-Qing Zheng, Zijian Zhou, Tao Zhu, Bowen Zhu, Ming Zhu, Rong Zhu, Yangzhi Zhu, Yong Zou, Guijin Chen, Xiaodong 08-03 Innovis Singapore 138634 Republic of Singapore Innovative Centre for Flexible Devices (iFLEX) School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore Department of Biomedical Engineering University of Houston Houston Texas 77024 United States School of Electrical and Electronic Engineering Yonsei University Seoul 03722 Republic of Korea Department of Electrical and Computer Engineering The University of Texas at Austin Austin Texas 78712 United States Microelectronics Research Center The University of Texas at Austin Austin Texas 78758 United States Department of Chemistry and Biochemistry California NanoSystems Institute and Department of Psychiatry and Biobehavioral Sciences Semel Institute for Neuroscience and Human Behavior and Hatos Center for Neuropharmacology University of California Los Angeles Los Angeles California 90095 United States Colloid Chemistry Department Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany Department of Chemical Engineering Stanford University Stanford California 94305 United States Laboratory of Organic Electronics Department of Science and Technology Campus Norrköping Linköping University 83 Linköping Sweden Wallenberg Initiative Materials Science for Sustainability (WISE) and Wallenberg Wood Science Center (WWSC) SE-100 44 Stockholm Sweden Department of Materials Science and Engineering Stanford University Stanford California 94301 United States Department of Biomedical Engineering and Department of Materials Science and Engineering Carnegie Mellon University Pittsburgh Pennsylvania 15213 United States Department of Bioengineering University of California Los Angeles Los Angeles California 90095 United States School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University Singapore 637457 Singapore Nanobionics Group Department of Chemical and Biological Engineering Monash University Clayton Australia 3800 Monash

Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions. We first analyze continued...challenges in achieving satisfactory sensing performance for real-world applications and then summarize issues in compatible sensor-biology interfaces, followed by brief discussions on powering and connecting sensor networks. Issues en route to commercialization and for sustainable growth of the sector are also analyzed, highlighting environmental concerns and emphasizing nontechnical issues such as business, regulatory, and ethical considerations. Additionally, we look at future intelligent flexible sensors. In proposing a comprehensive roadmap, we hope to steer research efforts towards common goals and to guide coordinated development strategies from disparate communities. Through such collab.rative

关键词： soft materials mechanics engineering flexible electronics conformable sensors bioelectronics human-machine interfaces body area sensor networks technology translation sustainable electronics

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