Multi-metallic Hydrate Hollow Structures in Cobalt Hydrate Based Systems

Abstract

The preparation and analysis of Ni doped Co1–x Ni x (OH)2 (x = 0.6–0.8) nanorings are reported as produced using core–shell structured Co0.9Ni0.1(OH)2 nanodiscs as a starting template material. The resulting structure and elemental distribution were analyzed to investigate the transformation from discs to rings. A representative example involving the doping of Cu in the Co–Cu hydrate system is also presented.

Unusual adsorption behaviours and responsive structural dynamics via selective gate effects of an hourglass porous metal–organic framework

“…Since interpenetration oen leads to a shrink of solvent accessible volume, [34][35][36] we pay more attention to the geometry rearrangement of the coordination environment and to the bond rotation of organic linkers. 20,[37][38][39][40][41] If the framework exibility and dynamics are generated by the bond rotation, it usually neither changes the topology of the whole framework nor dramatically reduces porosity. Moreover, it can temporarily open the narrow apertures of the coordination framework to facilitate kinetic diffusion of guest molecules and/or accept oversized guest molecules to give stepwise sorption behavior, [42][43][44] thus providing specic applications for gas separation, bio-chemical sensing, etc.…”