Nanorods of Various Oxides and Hierarchically Structured Mesoporous Silica by Sol-Gel Electrophoresis

Journal Article · Thu Jan 02 04:00:00 EST 2003 · Journal of Sol-Gel Science and Technology, 26(1-3):577-581

DOI:https://doi.org/10.1023/A:1020772020988· OSTI ID:15010182

Limmer, Steven J; Hubler, Timothy L; Cao, Guozhong

In this paper, we report the template-based growth of nanorods of oxides and hierarchically structured mesoporous silica, formed by means of a combination of sol-gel processing and elecrophoretic deposition. Both single metal oxides (TiO2) and complex oxides (Pb(Zr0.52Ti0.48)O3) have been grown by this method. This method has also been applied to the growth of nanorods of mesoporous silica having an ordered pore structure, where the pores are aligned parallel to the long axis of the nanorod. Uniformly sized nanorods of about 125-200 nm in diameter and 10 um in length were grown over large areas with near unidirectional alignment. Appropriate sol preparation yielded the desired stoichiometric chemical composition and crystal structure of the oxide nanorods, with a heat treatment (500-700 C for 15-30 min) for crystallization, densification and any necessary pyrolysis.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 15010182
• Report Number(s): PNNL-SA-38445
• Journal Information: Journal of Sol-Gel Science and Technology, 26(1-3):577-581, Journal Name: Journal of Sol-Gel Science and Technology, 26(1-3):577-581
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
complex oxides
electrophoresis
mesoporous silica
nanorods
sol-gel