Structure analysis and typical applications of manganese oxides in energy and environment
Siyu XU1, De LI1, Jialu LI1, Feng SHEN1,*(), Peng ZHENG2,*()
1 Agro-Environmental Protection Institute(Ministry of Agriculture and Rural Affairs), Tianjin 300191, China 2 College of Horticulture, South China Agricultural University, Guangzhou 510642, China
As one of the most common transition metal oxides, manganese oxides have many advantages and show great potential in many fields. Its catalytic activity, adsorption capacity, stability, and other properties of manganese oxides can be adjusted by changing its crystal, morphology, pore structure and oxygen vacancies. To improve the MnOX activity performance, various preparation methods have been developed to adjust its crystal structure and morphology structure. In this work, the relationship between the structure of different crystalline manganese dioxides (α, β, γ, δ, λ) and their catalytic activity/adsorption performance activity was studied. The preparation methods on the morphologies structure (nanorods, nanosheets, nanoflowers, nanospheres) of MnOX materials were comprehensively summarized. Then, the typical application performance of manganese oxides materials in the energy file (catalytic conversion of biomass, electrochemistry) and environment (decomposition of gas pollutants, adsorption of heavy metals, degradation of organic pollutants) were summarized. Finally, the problems such as complicated action mechanism and poor stability of MnOX were analyzed.MnOX still has great application potential in the fields of environment and energy in the future.
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