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Diffusion Kinetics of Carbonate Hydroxyapatite (CHAP) for Adsorbing F−Dissolved in Water

Acta Geologica Sinica - English Edition 2010年第2期80卷

作者： HUANG Zhiliang ZHANG Lianmeng LIU Yu WANG Qilin HE Qianjun CHEN Wei State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan Hubei 430070 Research Institute of Mineral Material Wuhan Institute of Technology Wuhan Hubei 430073

Abstract A systematic research was performed about diffusion kinetics of adsorbing F − dissolved in water for carbonate hydroxyapatite (CHAP) from the natural hydroxyapatite which was modified by adulterating with CO 2 3 . The result shows that the speed of F − adsorption is controlled by membrane diffusion when F − concentration is relatively low, which is expressed by the kinetic equation of diffusion Q =0.0005( C 1 - C )( t - t 1 )+0.3967, or by vacancy diffusion when F − concentration is relatively high, which is expressed by the kinetic equation of diffusion In[ C (o, t )]=8.4718-0.5048ln t . Based on the feature of CHAP for adsorbing F − dissolved in water and its special channel of the structure of CO 2 3 - modified hydroxyapatite, models of vacancy diffusion and membrane diffusion were established.

关键词： carbonate hydroxyapatite (CHAP) F− ion diffusion kinetics

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Intercalation Engineering of Nickle-Cobalt-Layered Double Hydroxide for Long-Lifespan Supercapacitor

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SSRN 2023年

作者： Hu, Wenxuan Chen, Lu Geng, Biao Song, Yihu Wu, Ziliang Zheng, Qiang Shan, Gurong Du, Miao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou310058 China Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product School of Biological and Chemical Engineering Zhejiang University of Science and Technology Hangzhou310023 China State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering Zhejiang University Hangzhou310058 China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan030000 China

Layered double hydroxides (LDHs), a class of 2D lamellar intercalating materials, is a promising candidate for high-performance supercapacitors, while its poor cycling stability has always been its Achille’s heel. Although doping metal ions into the host layer is proved to be an effective way to improve the weakness, the effects of intercalated anions on cycling performance have been rarely studied and highly underestimated. In this paper, we prepared a group of NiCo-LDHs with different intercalated anions, including NO3-, Cl-, SO42-, MoO42- and WO42-, which expand the interlayer spacing from 0.73 to 1.07 nm. Interestingly, although expanding the interlayer spacing could increase the specific capacity by providing more electrochemical active sites, it could not guarantee the improvement in cycling performance and rate capability. The correlation between interlayer spacing and cycling performance exhibits a "volcano" plot. The MoO42- intercalated NiCo-LDH with a 0.96 nm interlayer spacing delivers a high specific capacity of 795 C g-1 and the best cycling stability with 80% capacity retention after 20000 cycles, which is better than NiCo-LDH-NO3 (0.73 nm, 50% after 3000 cycles) and NiCo-LDH-WO4 (1.07 nm, 64% after 20000 cycles). By combining the results with the DFT method, the effects of intercalated anion on cycling performance are illustrated. In addition, the asymmetric supercapacitor also exhibits an excellent cycling stability with ~100% capacity retention after 10000 cycles. This study provides new insight to the compositional design of LDH-based electrodes for long-lifespan supercapacitors. © 2023, The Authors. All rights reserved.

关键词： Cobalt compounds

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Large Magnetostriction from Morphotropic Phase Boundary in Ferromagnets

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Physical Review Letters 2010年第19期104卷 197201-197201页

作者： Sen Yang Huixin Bao Chao Zhou Yu Wang Xiaobing Ren Yoshitaka Matsushita Yoshio Katsuya Masahiko Tanaka Keisuke Kobayashi Xiaoping Song Jianrong Gao Multi-disciplinary Materials Research Center Frontier Institute of Science and Technology State Key Laboratory for Mechanical Behavior of Materials and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter Xi’an Jiaotong University Xi’an 710049 China Ferroic Physics Group National Institute for Materials Science Tsukuba 305-0047 Ibaraki Japan National Institute for Materials Science Beamline BL15XU Spring-8 1-1-1 Kohto Sayo-cho Hyogo 679-5148 Japan Key Lab of Electromagnetic Processing of Material Northeastern University 3-11 Wenhua Road Shenyang 110004 China

For more than half of a century, morphotropic phase boundary (MPB) in ferroelectric materials has drawn constant interest because it can significantly enhance the piezoelectric properties. However, MPB has been studied merely in ferroelectric systems, not in another large class of ferroic systems, the ferromagnets. In this Letter, we report the existence of an MPB in a ferromagnetic system TbCo2−DyCo2. Such a magnetic MPB involves a first-order magnetoelastic transition, at which both magnetization direction and crystal structure change simultaneously. The MPB composition demonstrates a 3–6 times larger “figure of merit” of magnetostrictive response compared with that of the off-MPB compositions. The finding of MPB in ferromagnets may help to discover novel high-performance magnetostrictive and even magnetoelectric materials.

关键词： Ferromagnetism

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Synergistic Interaction of Cu(Ii) with Caffeic Acid and Chlorogenic Acid in Α-Glucosidase Inhibition

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SSRN 2023年

作者： Tang, Lihua Guan, Qinhao Xu, Man Zhang, Liangliang Zhang, Meng Institute of Chemical Industry of Forest Products CAF Key Lab. of Biomass Energy and Material Jiangsu Province Nanjing210042 China Co-Innovation Center of Efficient Processing Utilization of Forest Resources Nanjing Forestry University Nanjing210042 China Academy of Advanced Carbon Conversion Technology Huaqiao University Xiamen361021 China Jiangsu Key Laboratory for Bioresources of Saline Soils School of Wetlands Yancheng Teachers University Yancheng224002 China

Phenolic acids are widely present in foods and are beneficial to human health. However, the role of metal ion in influencing the binding of protein with phenolic acids that contain the same parent nucleus structure remains unclear. In this study, we investigated the inhibitory effect of caffeic acid (CA) and chlorogenic acid (CHA) on α-glucosidase and the biological effect of copper on this process. It was found that the esterification of CA with quinic acid could increase the fluorescence quenching, conformational change, and inhibitory effect of CHA on α-glucosidase . Copper ion reduced their fluorescence quenching and conformation-changing ability by binding to the neighboring phenolic hydroxyl group, but also increased their ability to alter secondary structure, inhibit α-glucosidase and in vitro anti-glycation. Overall, this study shows that the binding of copper ion to the phenolic hydroxyl group adjacent to CA and CHA synergistically inhibits the α-glucosidase. © 2023, The Authors. All rights reserved.

关键词： Fluorescence quenching

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Fe-N-C Single-Atom Nanozyme for Ultrasensitive, On-Site and Multiplex Detection of Mycotoxins Using Lateral Flow Immunoassay

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SSRN 2022年

作者： Cai, Xinfa Ma, Fei Jiang, Jun Yang, Xianglong Zhang, Zhaowei Jian, Zelang Liang, Meijuan Li, Peiwu Yu, Li Oil Crops Research Institute Chinese Academy of Agricultural Sciences Wuhan430062 China Key Laboratory of Biology and Genetic Improvement of Oil Crops Ministry of Agriculture and Rural Affairs Wuhan430062 China Key Laboratory of Detection for Mycotoxins Ministry of Agriculture and Rural Affairs Wuhan430062 China Ministry of Agriculture and Rural Affairs Wuhan430062 China Quality Inspection and Test Center for Oilseeds Products Ministry of Agriculture and Rural Affairs Wuhan430062 China Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Material Science and Engineering Wuhan430070 China

Sensitive, on-site and multiple detection of mycotoxins is a vital early-warning tool to minimize food losses and protect human health and the environment. Although paper-based lateral flow immunoassay (LFIA) have been extensively applied in mycotoxins monitoring, low-cost, portable, ultrasensitive and quantitative detection is still a formidable challenge. Herein, a series of Fe-N-C single-atom nanozymes (SAzymes) were synthesized and systematic characterized. The optimal Fe-N-C SAzyme with highly efficient catalytic performance was successfully used as both lab.l and catalyst in lateral flow immunoassays for mycotoxin detection. By taking advantage of the catalytic amplified system, the qualitative and quantitative detection can be easily and flexibly done via observing the test lines by naked eyes or a smartphone, with the LODs of 2.8 and 13.9 pg mL -1 for AFB 1 and FB 1 , which were respectively over 700- and 71000-fold lower than the maximum limit set by the European Union. Besides, underlying catalytic mechanisms and the active sites of the Fe-N-C SAzyme are also investigated by DFT simulation. This work not only provided a promising detection strategy for the application of advanced SAzymes but also offers experimental and theoretical guidelines to understand the active centers of Fe-N-C SAzymes and the catalytic process. © 2022, The Authors. All rights reserved.

关键词： Mycotoxins

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Fabrication of Al-W Functionally Graded Impact material via Vacuum Hot-Pressing Sintering Method

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Journal of Physics: Conference Series 2013年第1期419卷

作者： Pingan Chen Guoqiang Luo Yinghu Liu Qiang Shen Lianmeng Zhang State Key Lab of Advanced Technnology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan 430070 P.R.China

Dense graded material as a type of functionally graded material (FGM) changes its wave impedance gradually along the thickness direction. In this investigation, Al-W functionally graded material was fabricated via vacuum hot-pressing sintering method (VHPS). The results showed that densified Al-W composite was fabricated at 550°C-300MPa-120min which the relative density was higher than 98.5% without intermetallic compounds. The density graded material of Al-W FGM was attained at the optimized parameters which the component of Al was from 10% to 100%. The micro structure of Al-W FGM composite indicated that W particles in single-layer composite were distributed homogeneously. The density of each layer in Al-W FGM composite was consistent with the design value.

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Polycrystalline silicon thin film on SiSiC ceramic substrate

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Taiyangneng Xuebao/Acta Energiae Solaris Sinica 2006年第9期27卷 915-918页

作者： Ma, Lifen Xu, Ying Ren, Bingyan Gou, Xianfang Wang, Wenjing Wan, Zhijian Li, Haifeng Beijing Solar Energy Research Institute Beijing 100083 China School of Material Science and Engineering Hebei University of Technology Tianjin 300130 China State Key Lab. of New Ceramics and Fine Processing Tsinghua University Beijing 100084 China

Two type of Si-SiC complex ceramic substrates with good thermodynamic and crystal match with polycrystalline silicon thin film were prepared in our experiment. The substrates were defined as type I and type H according to higher and lower process temperature, respectively. The polycrystalline silicon thin-films were fabricated by means of rapid thermal CVD (RTCVD) on the substrates above 1100°C using SiH2Cl2 and B2H6 as the source gas. The orientation is measured by XRD, and SEM analyzes the pattern. The grain size of the thin film on substrates made on high larger than one on substrate II. All analysis show that the SiSiC substrates made on high temperature process are suitable for fabricating the polycrystalline silicon thin film.

关键词： Silicon solar cells

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Effects of Intrinsic Pentagon Defects on Electrochemical Reactivity of Carbon Nanomaterials

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Angewandte Chemie 2019年第12期131卷

作者： Jiawei Zhu Yupeng Huang Wencen Mei Chenyang Zhao Chengtian Zhang Jian Zhang Ibrahim Saana Amiinu Shichun Mu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P. R. China State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China

Theoretical calculations reveal that intrinsic pentagons in the basal plane can contribute to the local electronic redistribution and the contraction of band gap, making the carbon matrix possess superior binding affinity and electrochemical reactivity. To experimentally verify this, a pentagon‐defect‐rich carbon nanomaterial was constructed by means of in situ etching of fullerene molecules (C 60 ). The electrochemical tests show that, relative to hexagons, such a carbon‐based material with abundant intrinsic pentagon defects makes much greater contribution to the electrocatalytic oxygen reduction activity and electric double layer capacitance. It shows a four‐electron‐reaction mechanism similar to commercial Pt/C and other transition‐metal‐based catalysts, and a higher specific capacitance than many reported metal‐free carbon materials. These results show the influence of intrinsic pentagon defects for developing carbon‐based nanomaterials toward energy conversion and storage devices.

关键词： Kohlenstoffmaterialien Pentagondefekte Sauerstoffreduktion Superkondensatoren Zink-Luft-Batterien

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Erratum: Additive-mediated intercalation and surface modification of MXenes (Chem. Soc. Rev. (2022) DOI: 10.1039/d0cs01487g)

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Chemical Society Reviews 2022年

作者： Zou, Jing Wu, Jing Wang, Yizhou Deng, Fengxia Jiang, Jizhou Zhang, Yizhou Liu, Song Li, Neng Zhang, Han Yu, Jiaguo Zhai, Tianyou Alshareef, Husam N. School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development Utilization of Ministry of Education Wuhan Institute of Technology Hubei Wuhan430205 China Key Laboratory of Rare Mineral Ministry of Natural Resources Geological Experimental Testing Center of Hubei Province Hubei Wuhan430034 China Thuwal23955-6900 Saudi Arabia State Key Laboratory of Urban Water Resources and Environment School of Environment Harbin Institute of Technology Harbin150090 China School of Chemistry and Materials Science Nanjing University of Information Science & Technology Nanjing210044 China Key Laboratory for Organic Electronics & Information Displays Institute of Advanced Materials Nanjing University of Posts and Telecommunications Nanjing210023 China State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University Changsha410082 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Hubei Wuhan430070 China Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics Key Laboratory of Optoelectronic Devices and Systems Ministry of Education and Guangdong Province Shenzhen University Shenzhen518060 China State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Hubei Wuhan430074 China

In the original article, the author affiliation for Jiaguo Yu was incorrect. The correct affiliations are as shown here. The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to a...

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The rise of intelligent fabric agent from mass-produced advanced fiber materials

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Science Bulletin 2024年第23期69卷 3644-3647页

作者： Pan Li Maiping Yang Yueheng Liu Jing Zhang Sisi He Cuiwei Yang Weizhong Yang Xinyuan Cai Liping Zhu Shenglin Ye Hongyu Sun Chong Hou Ning Zhou Meifang Zhu Guangming Tao Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China School of Mechanical Engineering and Electronic Information China University of Geosciences(Wuhan)Wuhan 430074China Shenzhen Key Laboratory of Flexible Printed Electronics Technology School of ScienceHarbin Institute of TechnologyShenzhen 518055China Department of Biomedical Engineering School of Information Science and TechnologyFudan UniversityShanghai 200433China Shanghai Different Advanced Material Co. Ltd.Shanghai 201502China School of Architecture and Urban Planning Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Meta Reality Lab Meta PlatformsInc.SunnyvaleCA 94089USA School of Nursing Peking UniversityBeijing 100191China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Department of Cardiology Beijing Anzhen HospitalCapital Medical UniversityNational Clinical Research Center for Cardiovascular DiseasesBeijing 100029China Key Laboratory of Vascular Aging Ministry of EducationTongji Hospital Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Physical Education Huazhong University of Science and TechnologyWuhan 430074China

Artificial intelligence(AI)is crucial in driving scientific,technological,and industrial advancements,and it has given rise to an ambient intelligence that can potentially improve the physical execution of healthcare delivery[1,2].Among diverse advanced AI technologies,an intelligent agent with multi-parameter perception,decision-making,and execution capabilities demonstrates the potential for facilitating the development of next-generation optoelectronic *** intelligent agent is a physical or abstract entity that acts autonomously,perceives and interacts with its environment,and communicates with other agents[3].It could perceive dynamic environmental conditions,execute actions,and make appropriate *** emerges as an ideal carrier for human-centered intelligent agents,providing various properties such as perceptibility,adaptability,and *** fabric,known for its unique functionality,has attracted considerable attention from academia and *** 2014,Germany proposed a national strategy called FutureTEX to upgrade the entire textile industry by promoting integration between textiles and other *** years later,the United states announced the establishment of the Revolutionary Fibers and Textiles Manufacturing Innovation Institute,which intends to accelerate the revival of fabric *** with conventional fibers,revolutionary fibers focus on the design of multiple materials and structures,enabling the integration of various functionalities into a single *** in the United states,the advent of the digital revolution,advancements in Internet of Things technology,and mature fiber technology significantly boost the development of the intelligent fiber *** commercial applications of intelligent fibers are gradually *** Jacquard,a collab.rative effort by Google and Levi’s,presents an intelligent jacket that combines the washability and texture of standard fabrics with the

关键词： agent execution fiber

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