Pressure-driven fusion of amorphous particles into integrated monoliths

doi:10.1126/science.abg1915

GSTDTAP > 气候变化

DOI	10.1126/science.abg1915
	Pressure-driven fusion of amorphous particles into integrated monoliths
	Zhao Mu; Kangren Kong; Kai Jiang; Hongliang Dong; Xurong Xu; Zhaoming Liu; Ruikang Tang
	2021-06-25
发表期刊	Science
出版年	2021
英文摘要	Amorphous calcium carbonate is a hard material that is difficult to make into large, clear blocks. It is also sensitive to heating, and compacting the starting nanoparticles too much tends to lead to crystallization. Mu et al. determined the optimal amount of water in amorphous calcium carbonate to create clear, solid monoliths through compression. The key is to regulate the amount of diffusion in the system so that particle boundaries fuse without triggering sample-wide crystallization. This fusion strategy may also work for similar amorphous inorganic ionic compounds. Science , abg1915, this issue p. [1466][1] Biological organisms can use amorphous precursors to produce inorganic skeletons with continuous structures through complete particle fusion. Synthesizing monoliths is much more difficult because sintering techniques can destroy continuity and limit mechanical strength. We manufactured inorganic monoliths of amorphous calcium carbonate by the fusion of particles while regulating structurally bound water and external pressure. Our monoliths are transparent, owing to their structural continuity, with a mechanical strength approaching that of single-crystal calcite. Dynamic water channels within the amorphous bulk are synergistically controlled by water content and applied pressure and promote mass transportation for particle fusion. Our strategy provides an alternative to traditional sintering methods that should be attractive for constructing monoliths of temperature-sensitive biominerals and biomaterials. [1]: /lookup/doi/10.1126/science.abg1915
领域	气候变化 ; 资源环境
URL	查看原文
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/334150
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Zhao Mu,Kangren Kong,Kai Jiang,et al. Pressure-driven fusion of amorphous particles into integrated monoliths[J]. Science,2021.
APA	Zhao Mu.,Kangren Kong.,Kai Jiang.,Hongliang Dong.,Xurong Xu.,...&Ruikang Tang.(2021).Pressure-driven fusion of amorphous particles into integrated monoliths.Science.
MLA	Zhao Mu,et al."Pressure-driven fusion of amorphous particles into integrated monoliths".Science (2021).