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Biomimetic Construction of the Enamel-like Hierarchical Structure

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Chemical Research in Chinese Universities 2023年第1期39卷 61-71页

作者： SONG Haoyue LIU Zhuanfei zou zhaoyong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070P.R.China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya572000P.R.China

Enamel,the hardest mineralized tissue of vertebrates,exhibits simultaneously high stiffness,hardness,and *** excellent mechanical properties of enamel originate from its high inorganic content and intricate hierarchical *** construction of the enamel-like hierarchical structure has attracted widespread interest during the past *** review summarizes recent advances in this area with a special focus on fabrication techniques across different levels of *** includes the synthesis of apatite nanorods or nanowires,the basic building block of enamel,the fabrication of oriented apatite nanorod arrays and the construction of the enamel-like multi-level hierarchical ***,possible directions of future research and development in this field are proposed.

关键词： Biomimetic Enamel Hierarchical Structure Apatite

Bioprocess-inspired preparation of silica with varied morphologies and potential in lithium storage

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Journal of Materials Science & Technology 2021年第13期72卷 61-68页

作者： Fuqiang Wan Wenxuan Wang zhaoyong zou Hao Xie Hang Ping Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China School of Chemistry Chemical Engineeringand Life ScienceWuhan University of TechnologyWuhan430070China

As one of the most delicate bioprocesses in nature,biosilicification is closely related to biosilica with various morphologies,and has provided abundant inspiration to materials *** the present study,to explore the biosilica formation process and fabricate silica with an exquisite microstructure for lithiumion battery(LIB)electrodes,a bacterial phage(M13)is used as a biotemplate to synthesize silica with diverse morphologies:cylinders,hexagonal prisms,assemblies of smaller cylinders and nanowires.A facile ethanol bath method is conducted to coat the nanowires with nitrogen-containing carbon and carbon-coated SiO_(2) nanowires with mesochannels(C@msSiO_(2) NWs)are first used as anode materials for *** to the uniform carbon coating and parallel mesochannel structure,the electronic conductivity and capacity to accommodate volume variations were significantly *** the electrochemical perfo rmance test,the composites calcined at 750℃(C@msSiO_(2) NWs-750)show an impressive capacity of 653 mA h g^(-1) at a current density of 500 mA g^(-1) and stability(1000 cycles).In view of the electrochemical test outcomes,the prepa ration of a sophisticated structure with an outstanding potential is easily achieved via a biomimetic strategy.

关键词： Biomimetic preparation Biosilicification M13 phage Silica nanowires Mesochannel

Nonclassical crystallization of zinc carbonate hydroxide hydrate nanofilm mediated by calcium ions

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Progress in Natural Science:Materials International 2022年第5期32卷 579-585页

作者： Qihang Wang Bicheng Yuan Wenduo Gao Huifeng Hu Meng Cai zhaoyong zou Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Longzhong Laboratory

To satisfy the demand of zinc oxide(ZnO) with advanced muti-functional properties, significant efforts have been made in synthesizing ZnO with various structure and morphology. In particular, hydrothermal method has attracted considerable attentions, in which Zn4CO3(OH)6·H2O(ZCHH) is commonly found as a metastable precursor. However, the formation and crystallization mechanisms of ZCHH are still lacking and urgently needed. In the present study, the crystallization pathway of ZCHH was systematically investigated, and the results demonstrate that the amorphous zinc carbonate(AZC) was an even more unstable precursor. AZC nanoparticles typically aggregated to form one-dimensional(1D) ZCHH nanorods, however, two-dimensional(2D) ZCHH nanofilms were obtained in the presence of a certain concentration of calcium ion. The results suggest that calcium ions could promote the partial dissolution of AZC and facilitate the aggregation of AZC nanoparticles to form crystalline nanofilm. Moreover, 2D ZnO nanofilms could be obtained by heat treatment of the ZCHH nanofilms. The calcium ion mediated nonclassical crystallization pathway provides inspiration for fabrication of ZnO with controlled morphology and offers new opportunities for inorganic regulated material synthesis.

关键词： Zn 4 CO 3 (OH) 6 ·H 2 O Calcium ion Crystallization ZnO nanofilm

Bio-inspired high-efficiency photosystem by synergistic effects of core-shell structured Au@CdS nanoparticles and their engineered location on{001}facets of SrTiO_(3)nanocrystals

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Journal of Materials Science & Technology 2023年第5期136卷 159-168页

作者： Wenxuan Wang Wenhao Chi zhaoyong zou Pengchao Zhang Kun Wang Ji zou Hang Ping Jingjing Xie Weimin Wang Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Longzhong Laboratory Xiangyang 441000China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China

Natural photosynthesis,which provides a green and high-efficiency energy conversion path by spatial separation of photogenerated carriers through combined actions of molecules ingeniously arranged in an efficient solar nanospace,highlights the importance of rational nanostructure design to realize artificial high-efficiency *** by these unique features,we constructed a high-efficiency ternary photosystem by selectively decorating the{001}facets of 18-facet SrTiO_(3)with Au@CdS photosensitizers via a green photo-assisted *** from the dual-facilitated charge carriers transportation in core-shell structured Au@CdS heterojunction and well-faceted 18-facet SrTiO_(3)nanocrystal,such a photo-catalyst could realize the effective spatial separation of photogenerated electrons and *** expected,the 18-facet SrTiO_(3)/Au@CdS photocatalyst exhibits superior activity in visible-light-driven photocatalytic hydrogen evolution(4.61 mmol h^(−1)g^(−1)),166%improvement in comparison with randomly deposited Au@CdS(1.73 mmol h^(−1)g^(−1)).This work offers new insight into the development of green and high-efficiency photocatalytic systems based on the rational nanostructure design by crystal facet engineering.

关键词： Au@CdS composites Core-shell 18-facet SrTiO_(3) Photogenerated carrier separation Crystal facet engineering Hydrogen production

Bioprocess inspired formation of calcite mesocrystals by cation-mediated particle attachment mechanism

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National Science Review 2023年第4期10卷 159-168页

作者： Qihang Wang Bicheng Yuan Wenyang Huang Hang Ping Jingjing Xie Kun Wang Weimin Wang zhaoyong zou Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Longzhong Laboratory

Calcite mesocrystals were proposed, and have been widely reported, to form in the presence of polymer additives via oriented assembly of nanoparticles. However, the formation mechanism and the role of polymer additives remain elusive. Here, inspired by the biomineralization process of sea urchin spine comprising magnesium calcite mesocrystals, we show that calcite mesocrystals could also be obtained via atachment of amorphous calcium carbonate(ACC) nanoparticles in the presence of inorganic zinc ***, we demonstrate that zinc ions can induce the formation of temporarily stabilized amorphous nanoparticles of less than 20 nm at a significantly lower calcium carbonate concentration as compared to pure solution, which is energetically beneficial for the atachment and occlusion during calcite growth. The cation-mediated particle atachment crystallization significantly improves our understanding of mesocrystal formation mechanisms in biomineralization and offers new opportunities to bioprocess inspired inorganic ions regulated materials fabrication.

关键词： nonclassical crystallization mesocrystal calcium carbonate zinc ion particle attachment

钢-混凝土组合桥面单向板与双向板边长比界限研究

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建筑结构学报 2015年第S1期36卷 156-160页

作者：冯霞占玉林邹赵勇薛登宇李冲杰西南交通大学土木工程学院四川成都610031 西南交通大学陆地交通地质灾害防治技术国家工程实验室四川成都610031

为确定钢-混凝土组合桥面板在简化计算时单向板与双向板的界限值,采用有限元方法建立了基于弹性理论的分析模型。考虑钢-混凝土组合桥面板中的均布荷载作用效应,对不同边长比下的四边简支钢-混凝土组合桥面板进行研究。结果表明,随着边... 详细信息

为确定钢-混凝土组合桥面板在简化计算时单向板与双向板的界限值,采用有限元方法建立了基于弹性理论的分析模型。考虑钢-混凝土组合桥面板中的均布荷载作用效应,对不同边长比下的四边简支钢-混凝土组合桥面板进行研究。结果表明,随着边长比的增大,弯矩和反力沿短边传递的效应越明显;当边长比大于3时,钢-混凝土组合桥面板长边方向的荷载传递和弯矩分配效应均达到或超过总效应的85%;建议在进行弹性理论分析时,以边长比等于3作为四边简支钢-混凝土组合板单、双向的界限值。

关键词：钢-混凝土组合桥面板单向板双向板有限元分析区分界限值

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有机聚合物剪力键的破坏机理及承载能力研究

西南交通大学学报 2017年第3期52卷 524-531页

作者：占玉林李贵峰赵人达邹赵勇薛登宇西南交通大学土木工程学院四川成都610031 陆地交通地质灾害防治技术国家工程实验室四川成都610031 天津市市政工程设计研究院滨海分院天津300457

为了解决金属剪力键存在初始裂缝、焊接残余应力、剪应力传递不均匀等缺陷,进行了有机聚合物非金属剪力键代替传统金属剪力键的研究.采用推出试验方法,设计、制作并测试了8组试件(共24个试件),在考虑有机聚合物剪力键的粘结厚度、弹性... 详细信息

为了解决金属剪力键存在初始裂缝、焊接残余应力、剪应力传递不均匀等缺陷,进行了有机聚合物非金属剪力键代替传统金属剪力键的研究.采用推出试验方法,设计、制作并测试了8组试件(共24个试件),在考虑有机聚合物剪力键的粘结厚度、弹性模量及界面处理工艺等影响参数的基础上,研究了这类剪力键的破坏机理和极限承载能力,同时,提出了预测界面极限抗剪承载能力的计算公式.研究结果表明:有机聚合物与混凝土共同被剪坏是主要的破坏形式;非金属剪力键界面极限剪应力分布在1.10~2.47 MPa之间,非金属剪力键与金属剪力键具有同等能力的界面抗剪水平.

关键词：有机聚合物剪力键推出试验破坏形态极限承载力

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材料的的过程仿仿生制备技技术研究究进展

硅酸盐学报 2023年第2期51卷 303-317页

作者：王荣杰解晶晶平航邹朝勇王堃雷丽文傅正义武汉理工大学材料复合新技术国家重点实验室武汉430070 湖北隆中实验室湖北襄阳441000

“材料的过程仿生制备技术”是一种从自然物质精妙的结构形成过程中得到启示、找到灵感,发展材料的合成与制备新技术。本文结合近年来“材料的过程仿生制备技术”的发展现状,围绕自然制造过程及自然制造过程-生物结构的关系,从生物矿化... 详细信息

“材料的过程仿生制备技术”是一种从自然物质精妙的结构形成过程中得到启示、找到灵感,发展材料的合成与制备新技术。本文结合近年来“材料的过程仿生制备技术”的发展现状,围绕自然制造过程及自然制造过程-生物结构的关系,从生物矿化启示的合成与制备、光合作用启示的合成、光合作用和生物矿化相结合的合成与制备等方面综述了该方向现有的研究工作。最后,对“材料的过程仿生制备技术”的研究目标进行了总结,并对其发展趋势进行展望。

关键词：生物矿化光合作用过程仿生

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无定形碳酸钙的稳定性和结晶转化过程研究进展

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中国材料进展 2020年第4期39卷 261-268页

作者：解晶晶邹朝勇傅正义武汉理工大学材料复合新技术国家重点实验室湖北武汉430070

无定形碳酸钙在具有多级结构和优异力学性能的碳酸钙矿物的形成过程中起着至关重要的作用。生物体可以非常精确地调控无定形碳酸钙的结晶转化过程,而化学合成的无定形碳酸钙通常很不稳定。因此,从化学的角度研究无定形碳酸钙的稳定机理... 详细信息

无定形碳酸钙在具有多级结构和优异力学性能的碳酸钙矿物的形成过程中起着至关重要的作用。生物体可以非常精确地调控无定形碳酸钙的结晶转化过程,而化学合成的无定形碳酸钙通常很不稳定。因此,从化学的角度研究无定形碳酸钙的稳定机理以及无定形碳酸钙结晶转化过程,对于理解以无定形物相为前驱体的生物矿物形成过程具有非常重要的意义。综述了无定形碳酸钙的本征特性,以及环境因素和添加剂对其稳定性和结晶转化的影响,阐述了无定形碳酸钙在晶体生长过程中的作用,讨论了该领域对材料结构和特性调控方面的启示。

关键词：无定形碳酸钙生物矿化晶体生长稳定性