Template-free fabrication of fractal porous Y2O3 monolithic foam and its functional modification by Ni-doping
Sign Up to like & getrecommendations! Published in 2020 at "Science China Materials"
DOI: 10.1007/s40843-020-1317-1
Abstract: 自相似的分形结构如云、树、雪花、闪电、人类循环系统 等广泛存在于自然界中, 然而自然界中自发形成的分形结构很难 用常规的实验室合成方法得到. 本文利用一种无模板的、基于金 属-小分子配位聚合作用的自组装方法, 制备了具有分形孔结构的 整体钇-氨基酸配合物材料, 并通过焙烧得到分形孔结构Y2O3. 材 料的孔尺度分布范围从微米到纳米尺度, 最为有趣的是, 这种孔结 构表现出自相似特征的结构, 即任意一级的大孔的孔壁都是由次 级尺度范围的二级小孔孔结构组成. 整体配合物由几十微米的微 米孔构筑而成, 微米孔的孔壁由尺度更小的次级微米孔组成, 次级 微米孔的孔壁继续由100 nm左右的纳米孔组成. 继续放大后可以 看到纳米孔的孔壁包含由纳米晶粒堆积而成的更小的介孔 (2–10 nm). 通过在合成中引入其他金属阳离子(Ni2+, Bi3+, Ce3+, Eu3+), 可以得到分形孔包裹镶嵌的掺杂型分形孔混合氧化物. 以 Ni2+为例, 分散的NiO纳米颗粒嵌入Y2O3泡沫分形孔结构中. 在乙… read more here.
Keywords: y2o3; free fabrication; porous y2o3; fractal porous ... See more keywords
Vacuum-free fabrication of organic solar cell on assembled glass substrates
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DOI: 10.1016/j.optmat.2020.110683
Abstract: Abstract Vacuum-free fabrication is essential to realize large-scale production of organic solar cells. Blade-coating and printing are important solution-processing techniques to realize this idea. Preparation devices on large substrates is important for mass production; however,… read more here.
Keywords: organic solar; vacuum free; free fabrication; assembled glass ... See more keywords
Calcination-Free Fabrication of Highly b-Oriented Silicalite-1 Zeolite Films by Secondary Growth in the Absence of Organic Structure-Directing Agents
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DOI: 10.1021/acs.iecr.1c01102
Abstract: Calcination-free fabrication of highly b-oriented silicalite-1 (S-1) zeolite films in the absence of organic structure-directing agents (OSDAs) is attractive but still challenging. Herein, for the ... read more here.
Keywords: fabrication highly; oriented silicalite; calcination free; free fabrication ... See more keywords