锰氧化物的结构分析及其在能源与环境中的典型应用EI北大核心CSCD

锰氧化物作为最常见的过渡金属氧化物之一,是一种极具潜力的材料,可通过改变其晶型、形貌、比表面积和氧空位数量等调节催化活性、吸附能力、稳定性等性能。调控MnO_(X)的晶体结构及形貌以提高其性能,一直是国内外学者极为关注的问题。本文分析了不同晶型二氧化锰(α,β,γ,δ,λ)的结构特点及其与催化/吸附性能之间的构效关系,系统总结了不同形貌MnO_(X)(纳米棒、纳米片、纳米花、纳米球)的制备方法及结构特点,并介绍了锰氧化物近年来在能源(生物质催化转化、电化学)及环境治理(气体污染物分解、重金属吸附、有机污染物降解)中的典型应用。最后,对锰氧化物存在作用机制复杂、稳定性较差等问题进行了分析。尽管锰氧化物在研究过程中还存在问题,但其作为一种重要的金属氧化物,未来在环境、能源等领域中的应用前景十分广阔。

Structure analysis and typical applications of manganese oxides in energy and environment

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 MnO_X 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 MnO_X 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 MnO_X were analyzed.MnO_X still has great application potential in the fields of environment and energy in the future.