Preparation of in-situ Pt nanoparticles into frameworks of mesoporous silica for improving thermal stability

Hyeong Seok Lee; Jung Whan Yoo

doi:10.1166/jnn.2011.4787

Preparation of in-situ Pt nanoparticles into frameworks of mesoporous silica for improving thermal stability

J Nanosci Nanotechnol. 2011 Aug;11(8):7365-8. doi: 10.1166/jnn.2011.4787.

Authors

Hyeong Seok Lee¹, Jung Whan Yoo

Affiliation

¹ Eco-Composite Materials Center Korea Institute of Ceramic Engineering and Technology, 233-5, Gasan-Dong, Geumcheon-Gu, Seoul, 153-801, Korea.

PMID: 22103197
DOI: 10.1166/jnn.2011.4787

Abstract

The Pt/sulfur-containing mesoporous silica (SMS) was obtained through in-situ co-condensation of TESPTS and TEOS in the presence of a triblock copolymer template. Strong interaction between the Pt NPs and S moieties of TESPTS in the SMS frameworks played an important role in the stabilization of Pt NPs against the sintering or coalescence problems. The Pt/SMS significantly improved the thermal stability at high temperature.