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2D Layered Double Hydroxide Nanosheets and Their Derivatives Toward E cient Oxygen Evolution Reaction

Nano-Micro Letters 2020年第7期12卷 89-120页

作者： Xueyi Lu Hairong Xue Hao Gong Mingjun Bai Daiming Tang Renzhi Ma takayoshi sasaki International Center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)TsukubaJapan

Layered double hydroxides(LDHs)have attracted tremendous research interest in widely spreading *** notably,transition-metal-bearing LDHs are expected to serve as highly active electrocatalysts for oxygen evolution reaction(OER)due to their layered structure combined with versatile ***,reducing the thickness of platelet LDH crystals to nanometer or even molecular scale via cleavage or delamination provides an important clue to enhance the *** this review,recent progresses on rational design of LDH nanosheets are reviewed,including direct synthesis via traditional coprecipitation,homogeneous precipitation,and newly developed topochemical oxidation as well as chemical exfoliation of parent LDH *** addition,diverse strategies are introduced to modulate their electrochemical activity by tuning the composition of host metal cations and intercalated counter-anions,and incorporating dopants,cavi-ties,and single *** particular,hybridizing LDHs with conductive components or in situ growing them on conductive substrates to produce freestanding electrodes can further enhance their intrinsic catalytic activity.A brief discussion on future research directions and prospects is also summarized.

关键词： Layered double hydroxides Nanosheets Derivatives Catalysts Oxygen evolution reaction

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Recent progress in functionalized layered double hydroxides and their application in efficient electrocatalytic water oxidation

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Journal of Energy Chemistry 2019年第5期28卷 93-104页

作者： Xiaolong Deng Jinzhao Huang Hao Wan Fashen Chen Yifan Lin Xijin Xu Renzhi Ma takayoshi sasaki School of Physics and Technology University of JinanJinan 250022ShandongChina National Institute for Materials Science (NIMS) Beijing Tsinghua University University of Tokyoin the National Institutefor Research in Inorganic Materials International Center for Materials Nanoarchitectonics (WPI-MANA) National Institute for Materials Science (NIMS)Namiki 1-1Tsukubalbaraki 305-0044Japan Northwestern Polytechnical University Shanghai University Konkuk University Linyi University Beijing Jiaotong University Instituteof Solid State Physics Chinese Academy of Sciences Nanyang TechnologicalUniversity in Singapore

Layered double hydroxides (LDHs), a class of anionic clays consisting of brucite-like host layers and interlayer anions, have been widely investigated in the last decade due to their promising applications in many areas such as catalysis, ion separation and adsorption. Owing to the highly tunable compositi on and uniform distribution of metal cations in the brucite-like layers, as well as the facile exchangeability of intercalated anions, LDHs can be modified and functionalized to form various nanostructures/composites through versatile processes such as anion intercalation and exfoliation, decoration of nanoparticles, selfassembly with other two-dimensional (2D) materials, and controlled growth on conductive supports (e.g., nanowire arrays, nano tubes, 3D foams). In this article, we briefly review the recent advances on both the LDH nano structures and functionalized composites toward the applications in energy conversion, especially for water oxidation.

关键词： Layered double hydroxide Energy conversion Water splitting Functionalization

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Anisotropic fluoride nanocrystals modulated by facet-specific passivation and their disordered surfaces

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National Science Review 2020年第5期7卷 841-848页

作者： Ziyu Yang Huihui Zhang Junjie Xu Renzhi Ma takayoshi sasaki Yu-Jia Zeng Shuangchen Ruan Yanglong Hou Beijing Key Laboratory for Magnetoelectric Materials and Device(BKLMMD) Beijing Innovation Center for Engineering Science and Advanced Technology(BIC-ESAT)Department of Materials Science and Engineering College of Engineering Peking University College of Physics and Optoelectronic Engineering Shenzhen University International Center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)

Rutile-type fluorides have been proven to be active components in the context of emerging antiferromagnetic devices. However, controlled synthesis of low-dimensional, in particular two-dimensional (2D),fluorides in a predictable and deterministic manner remains unrealized because of a lack of efficient anisotropic control, which impedes their further development in reduced dimensions. We report here that altered passivation of{110}growing facets can direct the synthesis of rutile-type fluoride nanocrystals into well-defined zero-dimensional (0D) particulates, one-dimensional (1D) rods and 2D sheets in a colloidal approach. The obtained nanocrystals show positive exchange bias and enhanced magnetic transition temperature from the coexistence of long-range antiferromagnetic order and disordered surface spins,making them strong alternatives for flexible magnetic devices and sensors.

关键词： solution synthesis fluorides nanostructures magnetic properties exchange anisotropy surface effect

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Photo-enhanced rechargeable high-energy-density metal batteries for solar energy conversion and storage

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Nano Research Energy 2022年第1期1卷 22-42页

作者： Hairong Xue Hao Gong Yusuke Yamauchi takayoshi sasaki Renzhi Ma International Center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)1-1 NamikiTsukubaIbaraki 305-0044Japan Department of Chemistry and Materials Science College of ScienceNanjing Forestry UniversityNanjing 210037China Australian Institute for Bioengineering and Nanotechnology(AIBN)and School of Chemical Engineering The University of QueenslandBrisbaneQueensland 4072Australia JST-ERATO Yamauchi Materials Space-Tectonics Project National Institute for Materials Science(NIMS)1-1 NamikiTsukubaIbaraki 305-0044Japan

Solar energy is considered the most promising renewable energy *** cells can harvest and convert solar energy into electrical energy,which needs to be stored as chemical energy,thereby realizing a balanced supply and demand for *** energy storage devices for this purpose,newly developed photo-enhanced rechargeable metal batteries,through the internal integration of photovoltaic technology and high-energy-density metal batteries in a single device,can simplify device configuration,lower costs,and reduce external energy *** review focuses on recent progress regarding the working principles,device architectures,and performances of various closed-type and open-type photo-enhanced rechargeable devices based on metal batteries,including Li/Zn-ion,Li-S,and Li/Zn-I_(2),and Li/Zn-O_(2)/air,Li-CO_(2),and Na-O_(2) *** addition to provide a fundamental understanding of photo-enhanced rechargeable devices,key challenges and possible strategies are also ***,some perspectives are provided for further enhancing the overall performance of the proposed devices.

关键词： Solar energy photo-electrochemistry rechargeable batteries metal batteries energy conversion and storage high energy density

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Fabrication of initial trabecular bone-inspired three-dimensional structure with cell membrane nano fragments

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Regenerative Biomaterials 2023年第1期10卷 73-80页

作者： Koichi Kadoya Emilio Satoshi Hara Masahiro Okada Yu Yang Jiao takayoshi Nakano Akira sasaki Takuya Matsumoto Department of Biomaterials Okayama University Graduate School of MedicineDentistry and Pharmaceutical SciencesOkayama 700-8558Japan Department of Maxillofacial Surgery Okayama University Graduate School of MedicineDentistry and Pharmaceutical SciencesOkayama 700-8558Japan Division of Materials&Manufacturing Science Osaka UniversityOsaka 565-0871Japan

The extracellular matrix of trabecular bone has a large surface exposed to the bone marrow and plays important roles such as hematopoietic stem cell niche formation and *** vitro reproduction of trabecular bone microenvironment would be valuable not only for developing a functional scaffold for bone marrow tissue engineering but also for understanding its biological ***,we analyzed and reproduced the initial stages of trabecular bone formation in mouse femur *** identified that the trabecular bone formation progressed through the following steps:(i)partial rupture of hypertrophic chondrocytes;(ii)calcospherite formation on cell membrane nano fragments(CNFs)derived from the ruptured cells;and(iii)calcospherite growth and fusion to form the initial three-dimensional(3D)structure of trabecular *** reproducing the initial trabecular bone formation in vitro,we collected CNFs from cultured cells and used as nucleation sites for biomimetic calcospherite ***,almost the same 3D structure of the initial trabecular bone could be obtained in vitro by using additional CNFs as a binder to fuse biomimetic calcospherites.

关键词： trabecular bone calcospherites cell membrane nano fragments three dimensionalization bone tissue synthesis

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