title: Monolithically integrated spinel M(x)Co(3-x)O(4) (M=Co, Ni, Zn) nanoarray catalysts: scalable synthesis and cation manipulation for tunable low-temperature CH(4) and CO oxidation.
abstract: A series of large scale Mx Co3-x O4 (M=Co, Ni, Zn) nanoarray catalysts have been cost-effectively integrated onto large commercial cordierite monolithic substrates to greatly enhance the catalyst utilization efficiency. The monolithically integrated spinel nanoarrays exhibit tunable catalytic performance (as revealed by spectroscopy characterization and parallel first-principles calculations) toward low-temperature CO and CH4 oxidation by selective cation occupancy and concentration, which lead to controlled adsorption-desorption behavior and surface defect population. This provides a feasible approach for scalable fabrication and rational manipulation of metal oxide nanoarray catalysts applicable at low temperatures for various catalytic reactions.
authors.affiliation: Department of Materials Science and Engineering & Institute of Materials Science, University of Connecticut, 97 N. Eagleville Road, Storrs, CT (USA).
authors.forename: Zheng
authors.initials: Z
authors.lastname: Ren
authors.forename: Venkatesh
authors.initials: V
authors.lastname: Botu
authors.forename: Sibo
authors.initials: S
authors.lastname: Wang
authors.forename: Yongtao
authors.initials: Y
authors.lastname: Meng
authors.forename: Wenqiao
authors.initials: W
authors.lastname: Song
authors.forename: Yanbing
authors.initials: Y
authors.lastname: Guo
authors.forename: Ramamurthy
authors.initials: R
authors.lastname: Ramprasad
authors.forename: Steven L
authors.initials: SL
authors.lastname: Suib
authors.forename: Pu-Xian
authors.initials: PX
authors.lastname: Gao
keywords: density functional calculations; heterogeneous catalysis; low-temperature oxidation; nanoarrays; scalable synthesis