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分级结构纳米氧化铝由于具有微-纳米尺度的协同和偶合效应近年来受到广泛关注。本文将不同形态的分级结构分为空心球状结构、核壳结构、簇状结构和阵列结构4种一般类型,并综述了其合成进展。简要评述了合成过程中的影响因素及分级结构形成的机理,并概述了其热稳定性的相关研究,还列举了其在光学与催化等领域的应用。最后,从分级结构的形态和性质的可控合成与实际应用相结合的角度展望了未来的研究方向。
The hierarchical structure of nano-alumina has attracted much attention in recent years due to the synergistic and coupling effects of micro-nano scale. In this paper, we divided the different types of hierarchical structures into four general types: hollow spherical structure, core-shell structure, cluster structure and array structure, and summarized their synthesis progress. A brief review of the influencing factors in the synthesis process and the mechanism of the formation of the hierarchical structure are presented. The related studies on the thermal stability are also summarized. The applications in the field of optics and catalysis are also listed. Finally, the future research directions are prospected from the perspective of the combination of the controllable synthesis and the practical application of the hierarchical structure.