Preparation of reticulated MAX-phase support with morphology-controllable nanostructured ceria coating for gas exhaust catalyst devices

Authors

Ziqi Sun, Chinese Academy of SciencesFollow
Ying Liang
Meishuan Li
Yanchun Zhou

RIS ID

41955

Publication Details

Sun, Z., Liang, Y., Li, M. & Zhou, Y. (2010). Preparation of reticulated MAX-phase support with morphology-controllable nanostructured ceria coating for gas exhaust catalyst devices. Journal of the American Ceramic Society, 93 (9), 2591-2597.

Abstract

Reticulated porous Ti₃AlC₂ ceramic, a member of the MAX-phase family (M_n+1AX_n phases, where M is an early transition metal, A is an A-group element, and X is carbon and/or nitrogen), was prepared from the highly dispersed aqueous suspension by a replica template method. Through a cathodic electrogeneration method, nanocrystalline catalytic CeO₂ coatings were deposited on the conductive porous Ti₃AlC₂ supports. By adjusting the pH value and cathodic deposition current, coatings exhibiting nanocellar, nanosheets-like, or bubble-free morphologies can be obtained. This work expects to introduce a novel practically feasible material system and a catalytic coating preparation technique for gas exhaust catalyst devices.