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Abstract:
The development of efficient and stable non-noble metalbased catalysts for low-temperature methane combustion is extremely important and still a profound challenge. Herein, high-performance Ni1-xZrxO2-delta solid solution nanocatalysts were prepared through a homogeneous co-precipitation strategy, where the hydrolysis of CO32- was controlled to facilitate the dispersion and interaction of Ni and Zr components. The structural and surface properties of nanocatalysts were facilely tuned by modulating the Zr doping content. An optimized incorporation of Zr into the NiO lattice endowed the Ni0.89Zr0.11O2-delta nanocatalyst with a small crystallite size, large specific surface area, and simultaneously increased surface acidic-basic sites. Moreover, abundant active Ni2+ and surface oxygen species were generated due to the promoted conversion of Ni3+ to Ni2+, which played pivotal roles in the adsorption/activation of methane and further oxidation of reaction intermediates to CO2. Consequently, Ni0.89Zr0.11O2-delta exhibited an excellent low-temperature activity, high CO2 selectivity, and superior catalytic stability under both dry and wet conditions.
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ACS APPLIED NANO MATERIALS
ISSN: 2574-0970
Year: 2021
Issue: 11
Volume: 4
Page: 11920-11930
6 . 1 4
JCR@2021
5 . 3 0 0
JCR@2023
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:142
JCR Journal Grade:2
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 19
SCOPUS Cited Count: 20
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 3