Growth Mechanisms of Mesoscale Prussian Blue Analogue Particles in Modifier-free Synthesis,Crystal Growth & Design

当前位置： X-MOL 学术 › Cryst. Growth Des. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Growth Mechanisms of Mesoscale Prussian Blue Analogue Particles in Modifier-free Synthesis
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2020-03-10 , DOI: 10.1021/acs.cgd.0c00115
Jiamin Liang ₁ , Carissa H. Li ₁ , Daniel R. Talham ₁

Affiliation

The growth mechanism of mesoscale, 100–500 nm, Prussian blue analogue (PBA) particles synthesized via a modifier-free coprecipitation method was investigated. A series of Co²⁺ and Ni²⁺ analogues, Rb_jCo_k[M(CN)₆]_l·nH₂O (M = Cr, Fe, Co) and Rb_jNi_k[M(CN)₆]_l·nH₂O (M = Cr, Fe, Co) are compared, along with the parent Prussian blue and the Cu²⁺ analogue, rubidium copper hexacyanoferrate. The study finds that growth mechanisms differ among this closely related family of compounds. On the one hand, ex situ transmission electron microscopy and in situ ionic conductivity and DLS analyses indicate the Cu²⁺ and Ni²⁺ analogues grow by a traditional heterogeneous precipitation process, whereby nucleated particles grow by addition of ions from solution. On the other hand, the Co²⁺ analogues and the parent rubidium ferric ferrocyanide grow by aggregation of precursor particles followed by annealing into crystalline mesoscale particles. Understanding of the growth mechanisms is useful for designing routes to mesoscale coordination polymer structures and heterostructures.

中文翻译：

无修饰剂合成中尺度普鲁士蓝类似粒子的生长机理

研究了通过无修饰剂共沉淀法合成的中尺度100-500 nm普鲁士蓝类似物（PBA）粒子的生长机理。一系列Co ²⁺和Ni ²⁺类似物，Rb _j Co _k [M（CN）₆ ] _l · n H ₂ O（M = Cr，Fe，Co）和Rb _j Ni _k [M（CN）₆ ] _l · n H ₂ O（M = Cr，Fe，Co）与母体普鲁士蓝和Cu ^{2+进行比较}类似物，六氰合铁rub铜。研究发现，在这种密切相关的化合物家族中，生长机制有所不同。一方面，异位透射电子显微镜，原位离子电导率和DLS分析表明，Cu ²⁺和Ni ²⁺类似物通过传统的非均相沉淀过程生长，其中成核颗粒通过添加溶液中的离子而生长。另一方面，Co ²⁺类似物和母体rub化亚铁氰化物通过前体颗粒的聚集，然后退火为结晶中尺度颗粒而生长。了解生长机理有助于设计中尺度配位聚合物结构和异质结构的路线。

更新日期：2020-04-23

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11