Hierarchically-structured porous materials: from basic understanding to applications.

Abstract

The word ‘hierarchy’ goes back to the Greek word ‘ ierarw ia’ (hierarchia): ‘‘rule of a high priest’’, and at first it described the ranking of the sanctifications in churches. Thus, historically, the word hierarchy was not created with respect to materials or porous systems in particular. However, hierarchy or hierarchical systems are everywhere around us, with or even without our specific knowledge. Hierarchy is an organisational principle of nature. Indeed, one can find this principle everywhere, in natural, ecological, and even in social and technical systems. Thus, many materials derive their function through a hierarchical organisation of their structural elements. Self-organisation processes typically lead to these specific structures. Hierarchy is always related to properties such as strength, chemical composition, or transport related properties like flux, flow profiles etc. Thus, also the porosity of natural structures such as bones as well as the circulatory system and the anatomy of the a Erlangen Catalysis Resource Center, FriedrichAlexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91058 Erlangen, Germany. E-mail: martin.hartmann@ecrc.uni-erlangen.de; Fax: +49-9131-8567401; Tel: +49-9131-8528792 b Institute of Chemical Reaction Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91058 Erlangen, Germany. E-mail: wilhelm.schwieger@fau.de; Fax: +49-9131-8527421; Tel: +49-9131-8528910

DOI: 10.1039/c6cs90043g

Cite this paper

@article{Hartmann2016HierarchicallystructuredPM, title={Hierarchically-structured porous materials: from basic understanding to applications.}, author={Martin Hartmann and Wilhelm Schwieger}, journal={Chemical Society reviews}, year={2016}, volume={45 12}, pages={3311-2} }