A multi-stacked hyperporous silicon flake for highly active solar hydrogen production

Youn Jeong Jang; Jaegeon Ryu; Dongki Hong; Soojin Park; Jae Sung Lee

doi:10.1039/c6cc04775k

A multi-stacked hyperporous silicon flake for highly active solar hydrogen production

Chem Commun (Camb). 2016 Aug 11;52(67):10221-4. doi: 10.1039/c6cc04775k.

Authors

Youn Jeong Jang¹, Jaegeon Ryu², Dongki Hong², Soojin Park², Jae Sung Lee²

Affiliations

¹ Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea.
² Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea. spark@unist.ac.kr jlee1234@unist.ac.kr.

PMID: 27383444
DOI: 10.1039/c6cc04775k

Abstract

3D multi-stacked hyperporous silicon flakes (MHSFs) are prepared via a selective chemical reduction of natural clay minerals bearing MgO negative catalyst layers. The resultant MHSFs are used as a photocatalyst for solar-driven hydrogen evolution and exhibit the highest photocatalytic acitivty (1031 μmol H2 h(-1) g(-1) Si) coupled with a Pt cocatalyst.