Diatom Frustule Silica Exhibits Superhydrophilicity and Superhemophilicity. ACS Nano 2020 Apr 28;14(4):4755-4766
Date
03/26/2020Pubmed ID
32207961DOI
10.1021/acsnano.0c00621Scopus ID
2-s2.0-85084167447 (requires institutional sign-in at Scopus site) 51 CitationsAbstract
Special surface wettability attracts significant attention. In this study, dramatic differences in wettability are demonstrated for microparticles with the same chemical composition, SiO2. One is natural silica prepared from the diatom, Melosira nummuloides, and the other is synthetic silica. We found that surface properties of synthetic silica are hydro- and hemophobic. However, diatom frustule silica exhibits superhydrophilicity and even superhemophilicity. Interestingly, such superhydrophilicity of natural silica is not solely originated from nanoporous structures of diatoms but from the synergy of high-density silanol anions and the nanoarchitecture. Furthermore, the observation of superhemophilicity of natural silica is also an interesting finding, because not all superhydrophilic surfaces show superhemophilicity. We demonstrate that superhemowettability is a fundamental principle for developing micropowder-based hemostatic materials despite existing hemorrhaging studies using diatoms.
Author List
Lee J, Lee HA, Shin M, Juang LJ, Kastrup CJ, Go GM, Lee HAuthor
Christian Kastrup PhD Professor in the Surgery department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
DiatomsHemostatics
Nanostructures
Silicon Dioxide
Surface Properties
