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所属单位：航空学院

发表刊物：CRYSTENGCOMM

关键字：MOLTEN-SALT SYNTHESIS PIEZOELECTRIC PROPERTIES PHOTOCATALYTIC ACTIVITY GRAIN-SIZE NANBO3 PARTICLES MORPHOLOGY EVOLUTION CERAMICS GROWTH

摘要：In this study, ilmenite-type NaNbO3 microplates were prepared by a facile surfactant-free method, using NaAc and KOH as a sodium resource and as a mineralizer, respectively. The effects of each reactant were identified, and the formation process and crystallization pathway of ilmenite-type NaNbO3 microplates were explored based on the phase constitution, microstructure and chemical compositional analysis. The indispensable roles of K ions, which participated in the formation of layered KNN-hydrate intermediates, were revealed. Ilmenite-type NaNbO3 microplates were formed by the dissolution of these intermediates and subsequent recrystallization into K-containing NaNbO3, followed by the ion-exchange between K and Na ions. Meanwhile excess K ions would hinder the release of K ions associated with the dissolution of intermediates, thus preventing the formation of ilmenite-type NaNbO3. Moreover, the morphological evolution of ilmenite-type NaNbO3 microplates from platelets to octahedra was interpreted in terms of their intrinsic structure and KOH concentration.

ISSN号：1466-8033

是否译文：否

发表时间：2017-10-28

合写作者：Gu, Qilin,Lu, Wanheng,Sun, Qiaomei,王经文,Liu, Jinsong,Zhang, Jianhui,Zeng, Kaiyang,Wang, John

通讯作者：朱孔军,Zhang, Jianhui,朱孔军