文献类型：期刊文献

英文题名：Hydrothermal growth of facet-tunable fluoride perovskite crystals KMF3(M = Mg, Mn, Co, Ni and Zn)

作者：Yuan, Long[1]; Ge, Lei[2]; Sun, Xiaoli[3]; Zhang, Jiaqi[4]; Yu, Jie[5]; Zhang, Chenyang[5]; Li, Haibo[1]

第一作者：Yuan, Long

通讯作者：Yuan, Long

机构：[1] Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, College of Physics, Jilin Normal University, Changchun, 130103, China; [2] Jilin Province Product Quality Supervision and Inspection Institute, 2699 Yiju Road, Changchun, 130000, China; [3] State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, 130023, China; [4] State Key Laboratory of Automotive Simulation and Control, School of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Jilin University, 2699 Qianjin Street, Changchun, 130012, China; [5] College of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang, 453600, China

第一机构：Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, College of Physics, Jilin Normal University, Changchun, 130103, China

通讯机构：[1]Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, College of Physics, Jilin Normal University, Changchun, 130103, China

年份：2020

卷号：22

期号：37

起止页码：6216-6227

外文期刊名：CrystEngComm

收录：EI(收录号：20204109311096);Scopus(收录号：2-s2.0-85091962252)

语种：英文

外文关键词：Fluorine compounds - Nickel compounds - Crystals - Zinc compounds - Perovskite

摘要：Perovskite-structured ABX3halides are one of the most promising families of materials with many potential applications. However, the controllable growth methods of their crystal facets and the corresponding synthetic chemistry have not yet been resolved. In this paper, we report a ligand substitution strategy for the facet-tunable growth of perovskite structure KMF3(M = Mg, Mn, Co, Ni and Zn) fluorides under mild hydrothermal conditions. The competition of the strong ligand of NH3and weak ligand of F?in the octahedral crystal fields of M2+results in different facet evolution routes for KMF3samples with the M-site of empty-, partially- or fully-filled 3d orbitals. Although X-ray diffraction results indicated that all five KMF3compounds are crystalized into the same space group (Pm3m, no. 221), the crystal shape of KMF3with M = Mg, Mn, Co and Ni evolved from cubic shape to edge-truncated chamfer box shape, while KZnF3evolved from cubic shape to corner-truncated cubic shape under the same set of synthetic conditions. The cubic shape habitat morphology of KMF3crystals is enclosed by {100} facets, chamfer box {100} and {110} facets, and corner-truncated cube {100} and {111} facets. The crystal shape formation mechanism was analysed based on ligand field theory and the Bravais-Friedel-Donnay-Harker (BFDH) theory. We expect that the shape controllable synthetic method can benefit the growth of other halide material crystals, and the shape tunable crystals can find more important applications. ? The Royal Society of Chemistry 2020.