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Issue 4, 2016
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A “copolymer-co-morphology” conception for shape-controlled synthesis of Prussian blue analogues and as-derived spinel oxides

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Abstract

The morphologically and compositionally controlled synthesis of coordination polymers and spinel oxides is highly desirable for realizing new advanced nanomaterial functionalities. Here we develop a novel and scalable strategy, containing a “copolymer-co-morphology” conception, to shape-controlled synthesis of various types of Prussian blue analogues (PBAs). Three series of PBAs MyFe1−y[Co(CN)6]0.67·nH2O (MyFe1−y–Co, M = Co, Mn and Zn) with well-controlled morphology have been successfully prepared through this strategy. Using MnyFe1−y–Co PBAs as the model, by increasing the relative content of Mn, flexible modulation of the morphology could be easily realized. In addition, a series of porous MnxFe1.8−xCo1.2O4 nano-dices with well-inherited morphologies and defined cation distribution could be obtained through a simple thermal treatment of the PBAs. All these results demonstrate the good universality of this novel strategy. When evaluated as an electrocatalyst, the octahedral-site MnIII/MnIV content in MnxFe1.8−xCo1.2O4, mainly determined by sensitive 57Fe Mössbauer in combination with X-ray photoelectron spectroscopic techniques, was discovered to be directly correlated with the oxygen reduction/evolution reaction (ORR/OER) activity.

Graphical abstract: A “copolymer-co-morphology” conception for shape-controlled synthesis of Prussian blue analogues and as-derived spinel oxides

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Supplementary files

Article information


Submitted
16 Oct 2015
Accepted
18 Dec 2015
First published
22 Dec 2015

Nanoscale, 2016,8, 2333-2342
Article type
Paper

A “copolymer-co-morphology” conception for shape-controlled synthesis of Prussian blue analogues and as-derived spinel oxides

X. Li, L. Yuan, J. Wang, L. Jiang, A. I. Rykov, D. L. Nagy, C. Bogdán, M. A. Ahmed, K. Zhu, G. Sun and W. Yang, Nanoscale, 2016, 8, 2333
DOI: 10.1039/C5NR07193C

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