Among the transition metal oxide catalysts, manganese oxides have great potential for formaldehyde (HCHO) oxidation at ambient temperature because of their high activity, nontoxicity, low cost, and polybasic morphologies. In this work, a MnO2-based catalyst (M-MnO2) with an interconnected network structure was successfully synthesized by a one-step hydrothermal method. The M-MnO2 catalyst was composed of the main catalytic agent, δ-MnO2 nanosheets, dispersed in a nonactive framework material of γ-MnOOH nanowires. The catalytic activity of M-MnO2 for HCHO oxidation at room temperature was much higher than that of the pure δ-MnO2 nanosheets. This is attributed to the special interconnected network structure. The special interconnected network structure has high dispersion and specific surface area, which can provide more surface active oxygen species and higher surface hydroxyl groups to realize rapid decomposition of HCHO.
The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-020-00321-2
Ying Tao
,
Rong Li
,
Ai-Bin Huang
,
Yi-Ning Ma
,
Shi-Dong Ji
,
Ping Jin
,
Hong-Jie Luo
. High catalytic activity for formaldehyde oxidation of an interconnected network structure composed of δ-MnO2 nanosheets and γ-MnOOH nanowires[J]. Advances in Manufacturing, 2020
, 8(4)
: 429
-439
.
DOI: 10.1007/s40436-020-00321-2
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