Wang, Mei Hierarchical Porous Chitosan Sponges as Robust and Recyclable Adsorbents for Anionic Dye Adsorption. [electronic resource] - Scientific reports 12 2017 - 18054 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 2045-2322 Standard No.: 10.1038/s41598-017-18302-0 doi