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A 'copolymer-co-morphology' conception for shape-controlled synthesis of Prussian blue analogues and as-derived spinel oxides
- Source :
- Nanoscale. 8(4)
- Publication Year :
- 2016
-
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 Mn(III)/Mn(IV) content in MnxFe1.8-xCo1.2O4, mainly determined by sensitive (57)Fe Mössbauer in combination with X-ray photoelectron spectroscopic techniques, was discovered to be directly correlated with the oxygen reduction/evolution reaction (ORR/OER) activity.
- Subjects :
- chemistry.chemical_classification
Prussian blue
Materials science
Spinel
Nanotechnology
02 engineering and technology
Polymer
Thermal treatment
engineering.material
010402 general chemistry
021001 nanoscience & nanotechnology
Electrocatalyst
01 natural sciences
0104 chemical sciences
Nanomaterials
chemistry.chemical_compound
Chemical engineering
chemistry
Mössbauer spectroscopy
Copolymer
engineering
General Materials Science
0210 nano-technology
Subjects
Details
- ISSN :
- 20403372
- Volume :
- 8
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Nanoscale
- Accession number :
- edsair.doi.dedup.....cccccc1fb09ad0193c1eff4c949677bf