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Bio-inspired clay nanosheets/polymer matrix/mineral nanofibers ternary composite films with optimal balance of strength and toughness

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Science China Materials 2017年第10期60卷 909-917页

作者： Shi-Kuo Li Li-Bo Mao Huai-Ling Gao Hong-Bin Yao Shu-Hong Yu Center of Chinese Academy of Sciences University of Science and Technology of China Hefei 230026 China

Although remarkable progress has been witnessed in mimicking the nacre-like architecture in laboratory,it remains a great challenge for understanding the unique balancing mechanism of toughness and strength in biological materials. Here,taking advantage of the synergistic effect of different dimensional nanoscale building blocks,we fabricate nacre-like films that reconcile high strength and *** obtained ternary lamellar composite films are constructed by one-dimensional xonotlite nanowires and two-dimensional montmorillonite nanosheets with the assistance of poly（vinyl alcohol）. The ternary composite films show high strength（（241.8±10.2）MPa） and toughness（（5.85±0.46） MJ m^-3）,both of which are higher than that of the single nanofibrillar xonotlite network films or the binary montmorillonite/poly（vinyl alcohol） composite films. The excellent mechanical properties of the nacre-like ternary composite films are aroused by the synergistic toughening mechanism of the different dimensional building blocks. This strategy provides a facile approach to integrate the nacre-like composite films with potential applications in tissue engineering scaffold,strong air barrier coatings,and fire-retardant packing materials.

关键词： artificial nacre mineral nanofibers ternary lamellar,mechanical properties vacuum filtration assembly

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Advances in microstructure of sepiolite mineral nanofibers

Advances in microstructure of sepiolite mineral nanofibers

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2012 China Functional Materials Technology and Industry Forum

作者： Fei Wang Lei Feng Mengran Tang Jiyuan Li Qingguo Tang Institute of Power Source & Ecomaterials Science Hebei University of Technology Hebei United University Qian'an College College of Engineering and Computing Florida International University School of Materials Science and Engineering Tianjin Institute of Urban Construction

Sepiolite mineral nanofibers are typical porous materials widely existing in nature and have many nanometer level micropore and mesopore,which could play an active role in many fields such as thermal insulation functional additive for composite *** on the above reason,this paper briefly summarized the research progress of microstructure of sepiolite mineral nanofibers,and research orientations related to microstructure of sepiolite mineral nanofibers were also proposed.

关键词： Sepiolite Microstructure mineral nanofibers Research progress

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Low-cost fabrication of highly dispersed atomically-thin MoS2 nanosheets with abundant active Mo-terminated edges

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Nano Materials Science 2021年第3期3卷 205-212页

作者： Fei Wang Ming Hao Wei Liu Penji Yan Baizeng Fang Sijia Li Jinsheng Liang Maomao Zhu Li Cui Key Laboratory of Special Functional Materials for Ecological Environment and Information(Hebei University of Technology) Ministry of EducationTianjin300130China Institute of Power Source and Ecomaterials Science Hebei University of TechnologyTianjin300130China Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China College of Chemistry and Chemical Engineering Key Laboratory of Hexi Corridor Resources Utilization of Gansu UniversitiesHexi UniversityZhangye734000China Department of Chemical&Biological Engineering University of British ColumbiaVancouverV6T 1Z3Canada

In this work,highly dispersed atomically-thin MoS2 nanosheets were fabricated at one thousandth of the commercial cost using sepiolite(SEP)mineral nanofibers as carriers via a microwave hydrothermal *** microscopy revealed the MoS2 nanosheets were only 1–4 atomic layers *** Mo atoms anchored on the mineral surface served as nucleation sites for the nanosheet *** MoS2 layers were in staggered stacking yielding abundant atomic steps at the nanosheets’edges,where catalytically active molybdenum terminations dominated instead of the inert sulfur atoms commonly *** calculations disclosed that the bonding of Mo(MoS2)and O(SEP)at the MoS2/sepiolite(MSEP)interface enabled SEP to be a unique support,superior to the other minerals for growing such highly-dispersed ultrathin MoS2 *** a typical photocatalyisis application,the MSEP demonstrated a significantly improved photocatalytic performance for RhB degradation compared with the MoS2 nanosheets assembled *** work provides an important new strategy for low-cost batch preparation of high quality 2D materials via assembly on mineral materials.

关键词： Molybdenum disulfide Nanosheets mineral nanofibers Microwave hydrothermal Molybdenum termination Density functional theory

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